This presentation opens with global warnings, gives you a survey of earth's main biodiversity hotspots and offers some solutions to the ecological multitask challenge - Download as PDF to use the links in the table of contents, share if you like or just enjoy
2. 5 Impact of overpopulation
6 2020: for each inhabitant in the industrialized countries, there will be five in the developing countries
7 Global poverty
8 - 9 Nuclear risks
10 26/04/86: reason for a separate case study
11 Nuclear heritage
12 Natural and anthropogenic greenhouse effect
13 Greenhouse gases
14 Origin greenhouse gases and their impact
15 Global desertification happens mainly at the peripheries
16 Calamity of heating out of control
17 Feedback in the carbon cycle
18 Siberian roulette
19 The arctic region contains 500 billion tons of carbon
20 Methane bubbles faster up out of the tundra as expected
21 Future choices?
22 Anomaly surface temperature
23 Oil pollution
24 Deepwater Horizon, Gulf of Mexico, April 2010
25 Nature reserves in Louisiana mutilated
26 Bon Secour Refuge, Alabama threatened (3,5 103 ha)
27 Lepidochelys kempii, ‘arribada’
28 Human and ecological risks – pesticides
29 Reduction PCBs (35% since ’85) ensured seals of reproductive successes
30 Bhopal shows extra risks pesticides
31 01/11/’86 the Rhine (almost) died
32 - 33 Acid rain
34 Consequences of acid rain
35 SO2 -pollution and bio-indicators
36 Eutrophication and consequences
37 Terrestrial eutrophication
38 Eutrophication and solutions
39 The O3 layer: a protective shield for all life on earth
40 Destruction of the ozone layer
41 First observation in 1970 …
42 First observation in 1970 … images 1995 – 2004
43 Ozone depletion over the Arctic in 2011
44 ‘World avoided’ without ban CFCs
45 Pollution of oceans by plastic and trash
Global
warningsGlobal warnings
3. 46 Harmful invasive species
47 Black lists
48 Examples of harmful exotic species A1- Ludwigia grandiflora
49 Original distribution of Ludwigia grandiflora
50 Situation in France in 2009
51 Examples of harmful introduced species A1 – Rana catesbeiana
52 A2 - Introduced species: e.g. black cherry (Prunus serotina)
53 A2 - Introduced species: e.g. giant hogweed (Heracleum mantegazzianum)
54 A2 - Introduced species: e.g. Egyptian goose (Alopochen aegyptiacus)
55 A2 –Introduced species: e.g. harlequin ladybird (Harmonia axyridis)
56 – 59 Introduced species and evolution
60 Zebra spider (Salticus scenicus)
61 IUCN Red List of Threatened Species 2003
62 – 67 Threatened taxa: breeding birds in Belgium and the Netherlands
68 – 76 Other threatened taxa in Belgium and the Netherlands
77 Bee population density levels are dangerously low
78 Severe infection can cause the death of the entire hive between August and October
79 Will global warming bring about a “beepocalypse”?
80 Global threats to taxa
81 Corals, a specialized form of mutualism between algae en corallites
82 Florida Keys reefs: a degraded biodiversity hotspot
83 Reasons for the endangerment of taxa
84 - 85 Example of endangerment through deforestation
86 Loss of habitat and populations
87 Genetic erosion
88 – 92 Removal of keystone species drastically alters communities
93 Eschrichtius robostus
94 – 99 When a species becomes extinct, it’s gone for good
98 Brown-headed cowbirds following grazing bisons
100, 102 Predicted to become extinct?...
101 Hibiscadelphus woodii in bloom
103 Lost?....
104 – 108 Biodiversity in danger during the past
109 Narrow habitats, extensive specialization and limited dispersal may put species at risk
110 The critical predicament of biodiversity is epitomized by Banara vanderbiltii
111 Fungi in the midst of a mass extinction
Trojan
horses
Local flora &
fauna under
assault
Biodiversity
threatened
Trojan horses
Local flora & fauna under assault
Biodiversity threatened
4. 112 - 113 Rifle shots and holocausts
114 – 115 Ecosystems deserving immediate attention
116 San Bruno Mountain, California
117 – 118 Oases of the Dead Sea Depression, Israel and Jordan
119 California floristic province
120 – 122 Slash & burn in Madagascar
123 Grandidier's Baobab (Adansonia grandidieri)
124 The fossa (Cryptoprocta ferox) is the island's largest surviving endemic terrestrial mammal
125 – 126 Lower slopes of the Himalayas
127 – 129 Western Ghats, India
130 – 132 Central Chile
133 – 135 The Colombian Chocó
136 – 138 Western Ecuador
139 – 144 Uplands of western Amazonia
145 – 147 Atlantic coast of Brazil
148 – 149 Southwestern Ivory Coast
150 – 152 Fynbos, South Africa
153 – 155 Sri Lanka
156 – 159 Peninsular Malaysia
160 – 162 Borneo
163 – 166 The Philippines
167 – 171 New Caledonia
172 – 174 Southwestern Australia
175 – 177 The Mediterranean Basin
178 Survey of the most important biodiversity hotspots
179 - 182 The list is not closed…
183 – 185 Lake Baikal
186 – 187 Regeneration of tropical rain forest may take centuries
188 – 189 Queimadas or burnings in the Amazon
190 Deforestation and ecological holocaust by genetic engineering
191 Eco-battalions and eco-soldiers
192 – 205 Unmined riches of biodiversity
206 Sustainable use of rain forests as extractive reserves
207 - 208 Reforestation projects
209 – 230 Resolution
231 – 253 Credits, aknowledgments
Main
biodiversity
hotspots
Aware of
our riches
Resolution
Main biodiversity hotspots
Aware of our riches
Comprehensive solution to the ecological multitask challenge
6. For each inhabitant in the industrialized countries, there
will be five in the developing countries by 2020
Previous: banana plantations in
Nicaragua
Primary production rain forest is
consumed by ‘slash & burn’
plantations
The human population puts a huge
tax on earth’s resources
One on five lives in extreme
poverty
Species are at an accelerating pace
threatened with extinction
Since 1950 1/5 of the top layer of
the earth's surface has been lost
6Global
warnings
7. Global poverty
Deforestation, erosion and
spoiling of cyanide and mercury in
the Napo river in Ecuador as
consequences of gold mining
Cities in developing countries
particularly face an enormous
growth of massive country flight
Water, food, smog problems, ...
are inevitable
Overexploitation of rain forests
threaten all species, a lot of
which are never investigated
and live in undisturbed forests
Problems of endangered species
are inherent to poverty and
malnutrition
7Global
warnings
8. Nuclear risks
The Chernobyl motor, with graphite
moderator and water cooling,
exploded after a test
The test investigated if there could be
enough energy for water cooling after
a complete stop until diesel
production gets going
Emergency cooling was stopped so
the test wouldn’t be interrupted
Power reduction to 30 MW instead of
1 000 MW as a consequence of
unforeseen development of steam in
the cooling
For this reason workers removed
control rods, deadly in combination
with shortage of cooling water
8Global
warnings
9. Nuclear risks
The cooling lessened and lessened,
by delay of pump operation,
powered by the turbines
The problem with this kind of
reactor is the tremendous power it
develops at low capacity
Uncontrollable generation of steam
was the consequence
Fuel elements got broken and came
in contact with water
A steam explosion attacked the
heart of the engine
The shutter of the engine let air in:
½ C + O2 → CO: highly combustible
Eight tons of Pu-fuel, Cs & I set fire
and ascended in the atmosphere
9Global
warnings
10. 26/04/86: reason for a separate case study
Four km2 pine forest adjacent
to the engine coloured ginger
brown and died ‘Red Forest’
Slow recovery with distorted
and delayed trees
Human death toll through influence of
radiation valued at 100 000
Research of the ecological impact:
genetic damage for more than 20 sp.
E.g. horses on the island six km
further died of a desintegration of the
thyroid gland
Research is more difficult because
mutant animal is eaten quickly or dies
2 500 km2 exclusion zone show
numerous rare species e.g. eagle-owls
(Bubo bubo), great egrets (Egretta
alba), white-tailed eagles (Haliaeetus
albicilla), black storks (Ciconia nigra),
river otters (Lutra canadensis),
populations of wolves,…
Positive ecological impact of
evacuation exceeds radiation costs
10Global
warnings
11. Nuclear heritage
Research on swallows
(Hirundo sp.) shows that
migratory birds are very
radiation-sensitive
Migration trenches on reserves
of antioxidants
Depression of antioxidants is
linked to mutations: partial
albinism and sperm mutations
Homeless and migrating species
accumulate less radiation than these
with fixed habitat
Mutations as a result of radiation
have not been bound to one place
Migrating species are susceptible to
generative heritage or to spread the
mutations on to adjacent unpolluted
populations
Nests, eggs found in sarcophagus
Heavily contaminated rodents show
few deviations
Cleaning up by burning with
electricity generation from the
nucleotides is not an option
Mobilization of nucleotides is
extremely harmful
Vibrating ecosystem has been
destroyed 11Global
warnings
12. Natural and anthropogenic greenhouse effect
30% of the solar radiation is
reflected by earth (atmosphere,
clouds and surface)
70% is absorbed: 16% (e.g. UV) by
atmosphere, 3% by clouds, 51% by
earth
Stefan-Boltzmann: longwave IR
radiation is transmitted by earth (10
µm)
Atmosphere, transparent to visible
light, behaves like a black body for
IR
Only albedo- and black-body-
properties took in consideration,
earth’s surface temperature would
be 33º lower
Without convection temperature on
earth would be 72
12Global
warnings
13. Greenhouse gases
By car emissions, burning of fossil raw
materials, deforestation: CO2-record of
387 ppm
Greenhouse gases absorb IR-radiation:
tri- (or more) atomic molecules
Natural greenhouse effect: 60% H2O,
26% CO2, CH4, N2O, O3, CFCs (life span
up to 50 000 years)
H2O in large quantity, but is passive
with regard to climate by short yielding
life span in the atmosphere
As positive feedback with regard to
other gases, as clouds or rain
CO2, CH4 have a life span of hundreds of
years in atmosphere
[CFC], [CO2] previous century
13Global
warnings
14. Origin greenhouse gases and their impact
Desertification: interaction of
climate, overexploitation of
lands, erosion, industry,
deforestation, poverty, mine
construction,…
For fragile ecosystems
degradation of flora, fauna,
soil and water sources is
irreversible
CH4- increase is similar to that of CO2
Livestock, enlarging populations of
termites, deforestation, rice
plantations and fossil fuels are main
emitting factors of methane
N2O coming from chemical industry
and artificial manure
CFCs as refrigerants
Global warming:
Longer growing season plants: earlier
in spring, later in autumn
Increase [CO2]: C3-plants
Warming: thermophilic C4-plants
Glaciers melting and higher chances of
mud flows
Melting of all the ice would cause sea
level to rise 150 m
Currently with a rate of 1,8 mm/year
during the last 100 years
14Global
warnings
15. Global desertification happens
mainly at the peripheries
Between 1882 and 1952, the proportion of the earth’s
land surface classified as desert rose from 9,4 to 23,3%
15Global
warnings
16. Calamity of heating out of control
El Nino ensures periodically dryness in
Indonesia, Australia and the Amazon
In ’97 and ’98 el Nino was enormously
strong
Model studies predict that El Niño events
will become more frequent and severe as
earth’s climate warms
Research has recently found that over half
the Amazon rainforest is at risk of burning
during extreme droughts, like the one that
struck from July—November in 2005
In Indonesia and Malaysia rain forest is
growing on wet peat layers
2 billion barrel CO2 disappeared from
smouldering peat during the ‘90’s Nino’s
Some fires were switched on by owners of
palm oil companies which set up plantations
for extraction of bio-ethanol 16Global
warnings
17. Feedback in the carbon cycle
Few ° of temperature rise: 30% less
rainfall, arrival of a dry season
instead of daily rain
Massive wildfires lead to
desertification
90% of the Amazon rain forest could
possibly disappear with a rise of 2°
in the 21st century
Warming causes soil bacteria
to work and propagate faster
Warmer seas absorb less CO2
By means of loss of foliage
plants and trees grow less
Also if deforestation stops,
bunches of the Amazon
disappear as heating reaches
more than 2°
Forest ecosystems of the
Amazon have no defense
against fire
17Global
warnings
19. The arctic region contains 500 billion
tons of carbon
Cities such as Yakutsk, Vorkuta
and Noril'sk will realize they are
built on quicksand
At dry conditions bacteria will
oxidize it to CO2
If the soil is wet, anaerobic
bacteria will converse it into CH4,
20 times more powerful as a
greenhouse gas compared to CO2
The permafrost under the East
Siberian Arctic Shelf—long thought
to be an impermeable barrier
sealing in methane—is instead
perforated and leaking large
amounts of CH4 into the
atmosphere
The amount of CH4 currently
coming out of the swallow East
Siberian Arctic Shelf is comparable
to the amount coming out of the
entire world’s oceans19Global
warnings
21. Future choices?
Trade in emission rights
Withdraw the status symbol
from cars
Apply efficient energy use in
construction
Minimum 2 million windmills of
1 MW
(= 50x the amount in the
year ’09)
Solar panels on roofs, solar
mirrors in deserts
Pay to stop deforestation
Certainly no bio-ethanol
400 ppm CO2-equivalent =
2° warming
Flemish metropolitan dream:
21Global
warnings
23. Oil pollution
Oil is bottled up in a barrier of
rubbers
Boats ' skim ' oil of the sea
Bioremediation: use of manure
to promote oil-degrading
bacteria
Soapy oil-solvents, burnings
Absorption by e.g. straw, talc
Many times in history crude oil came
into the sea or rivers e.g.
Amodo Cadiz (1978) – Brittany: 230
000 tons, thousands of seabirds †
Exxon-Valdez (1989) hits a reef in
Alaska: 45 000 tons, many seabirds,
otters, seals †
Captain J. Hazelwood was drunk
Sea-Empress (1996) – Wales: 147 000
tons, 25 000 seabirds †
Since accident Erika at the Breton
coast (1999): EU applies stricter
conditions on oil transport
Prestige (2002), Galician coast
170 000 tons of heavy oil from Tricolor
(2002) pollutes the Zwin
Each year up to 500 000 tons of oil are
leaked into the Russian Ob and Yenisei
river basins with TNK-BP being the
biggest offender 23Global
warnings
24. Deepwater Horizon, Gulf of
Mexico, April 2010
Oil spill 24/05/2010, view by
Nasa’s Terra
Total crude oil pollution was
almost 0,95 109 l.
Exceeding Exxon-Valdez with a
factor 20
In 1979, platform Ixtoc I
caused a spill of 1,1 107 litres in
the Gulf of Mexico
The 2nd of May 2010 the
government closed the fishery
between the estuary and the
Pensacola Bay or 225 103 km2,
36% of the federal Waters of
the Gulf
24Global
warnings
25. Nature reserves in Louisiana
mutilated
The Breton and Chandeleur Islands
host habitats of dozens of bird
species e.g. the brown pelican
(Pelecanus occidentalis)
The quantity of oil drained is
enough to destroy the complete
marine life in the Gulf and the
coasts
Moreover, methane chokes and
benzene poisons
The heavier oil components
disturb life on the sea floor
Cloggy messes reached the
National Wildlife Refuge and the
Breton National Wildlife Refuge,
Louisiana
25Global
warnings
26. Bon Secour Refuge, Alabama
threatened (3,5 103 ha)
The Refuge is home to the Alabama
beach mouse (Peromyscus
polionotus ammobates), which is
associated with the sand dunes and
sea oats – IUCN 2006: Endangered
Crucial for the health of the entire
Refuge ecosystem
The Refuge beaches serve as
nesting sites for Kemp’s ridley
sea turtles (Lepidochelys
kempii), smallest but most
threatened marine turtle
Grasses of the marsh areas in
Louisiana die of oil
The vegetation of grasses is
exactly what keeps the small
islands together
The loss of these ‘wetlands’ may
enormously reinforce the impact
of hurricanes such as Katrina
(2005)
26Global
warnings
27. Lepidochelys kempii, ‘arribada’
Kemp’s ridley sea turtle, measuring 65 cm,
is strongly migratory and travels hundreds of km
to the nesting site where once it saw its life light
IUCN 2011: Critically Endangered 27Global
warnings
28. Human and ecological risks - pesticides
Dichlorodifenyltrichloroethane or DDT, fast
killer of aphids, mosquitoes, Colorado
potato beetles,… was used massively in
1943-1972, [DDT] in the soil: ½-time of
15 years
1967 was a year of success: many
countries were freed of malaria, relieving
the poverty
Abuse led to resistance
Facts that caused the ban:
Carsons ‘Silent spring’ (1962)
Organochlorines (DDT, PCB, dioxins,…)
accumulated in fatty tissues lift the risk on
breast cancer and endocrine diseases
Eggshell thinning as a reason of the
decline of birds of prey, pelicans,...
DDT is toxic for aquatic life and
neurologically toxic in general
28Global
warnings
29. Reduction PCBs (35% since ’85) ensured
seals of reproductive successes
PCBs are used as coolants,
insulating fluids and in pesticides
In 1968 in Japan, 400 000 birds
died after eating poultry feed
that was contaminated with PCBs
In 1999, the dioxin affair caused
serious trouble for the Belgian
government, when PCBs were found
in chickens and eggs
PCBs are neurologically toxic
pesticides with biomagnification
Immune system is affected,
teratogenic effects are multiple
Remote dispersal of PCBs by air and
ocean currents
The problem is international
Whales and polar bears found with
high [PCBs]
Spitsbergen: polar bears with male
and female properties
Eskimos subsisting primarily on
ocean resources are faced with
alarming concentrations29Global
warnings
30. Bhopal shows extra risks pesticides
HCl bottles in the former lab of
the abandoned factory show
the toxicity of the surrounding
Kali grounds
The local population has put up
a fight of many years against
Dow and Union Carbide
Because of receding profits, security
costs at Union Carbide India Limited
were scaled back
Bhopal (800 000 inhabitants) was
buried with 27 tons toxic methyl
isocyanate gases, 03/12/1984
Escaping people lost their intestines,
women aborted on the spot, many
suffered enormous asthma attacks
22 149 directly related deadly
victims
More than 1 000 people a year died
prematurely of chronic exposure to
the poison
One mass grave for 1000s of animals
– vegetation was evenly damaged
Families continued drinking polluted
water
30Global
warnings
31. 01/11/’86 the Rhine (almost) died
A catastrophic fire at a chemicals
factory near Basel sends tons of
toxic chemicals, pesticides and Hg
into the river
The neighbourhood smelled the
fetidness of rotten eggs and burned
rubber
For hundreds of km dead fish
surfaced
500 000 fish died, some species
were completely lost
Plants died as well
An investigation six months later
revealed that aquatic invertebrates
and plants survived the disaster
Setback of 10 years of rehabilitating
the ecosystem of the Rhine, severely
polluted by the industrial expansion
in Germany, France and Switzerland
31Global
warnings
32. Acid rain
Precipitation is slightly acid: pH = 5,6
H2O + CO2 → H2CO3
NOx > traffic, nitrifying bacteria
SO2 > burning of coal, melting of
metal sulfides and volcano eruptions
NH3 > manure, reacts with H+ to
NH4
+, oxidized by nitrifying bacteria
to NO3
-
pH < 5: acid rain
East US with a record pH of 2,6
Direct dry deposition of gases have a
negative influence on water retention
of plants facing stress (E.g. Pinus sp.
at cold conditions)
NOx and SO2 reacting with H2O
produce acid compounds
Naturpark Erzgebirge (Germany),
close to the Czech border32Global
warnings
33. Acid rain
Acid deposition of NOx and SO2 also
occurs via dry deposition in the
absence of precipitation
This dry deposition dissolving in
water leads to sulfuric and nitric
acid
Wet deposition of acids occurs
when any form of precipitation
removes acids from the
atmosphere and delivers it to the
earth's surface
Leaching away of metal ions out of
rocks, e.g. Al3+, Hg2+, Cd2+ (toxic)…
…leads to a lessened uptake of N,
P, K, Mg by the vegetation
33Global
warnings
34. Consequences of acid rain
Areas affected (bottom), are not areas
that produce (SO2)
Both the lower pH and higher Al3+-
concentrations in surface water cause
damage to fish and other aquatic animals
The lakes in Scandinavia and North-America
suffered a big loss of fish since the 1920s
pH precipitation Hawaii 5,3; peak of 3,8
Since natural gas is desulfurized SO2-
emissions dropped
Young fish (trout, salmon) and diatoms die
at pH < 5
HNO3-precipitation > N-saturation of soils
Mycorrhiza are very sensitive to dissolved
heavy metals
Growth is delayed, mycorrhiza species die
Buffer capacity calcareous soil is affected
Acidic soil (peat, taiga) is more sensitive
SO2, NOx can lead to respiratory problems
34Global
warnings
35. SO2 -pollution and bio-indicators
SO2 is harmful for the respiratory
organs of animals and humans
SO2 penetrates plants via stomata,
chlorophyll is degraded, leading to
chlorosis under influence of a low pH
Fir, Scots pine, spinach, cucumber,
oats,... are sensitive
Corn, celery, citrus,… are more resistent
More SO2 in winter: be cautious with
evergreen species
‘Jardins du Luxembourg’ – Nylander
(1886): changing lichen vegetation
Biomonitors: lichens and Usnea sp. are
very sensitive to SO2
Beard lichen (Usnea sp.) in an
unpolluted environment, growing on a
Siberian larch (Larix sibirica)
35Global
warnings
36. Eutrophication and consequences
Algal blooms (Australia) of a.o.
aggregates of cyanobacterial
Microcystis aeruginosa
Toxic for man and animal in
hot summers
N-fixation benefits green algae
with N-limitation in eutrophic
conditions
Eutrophication: excess of nutrients in
aquatic and terrestrial ecosystems
[N], [P] too high
Causes are point and diffuse (industry
and household) sources of pollution
P is a limiting factor for algal growth
In very polluted waters dominance of
cyanobacteria with reduction of [light,
O2] can prevail
Stench, fish mortality, deterioration of
aquatic plants, increase of plankton-
eaters as common bream,…
Too many fish without predators
reduce zooplankton and enhance algal
growth
Charales (Chara sp.), spiny naiads
(Najas major),… disappear in favour
of waterweeds (Elodea sp.)
36Global
warnings
37. Terrestrial eutrophication
Eutrophication will favour sand
sedge (Carex arenaria), a
colonizer of dunes
Open pastures, heathland, dunes,
oligotroph pine forests and
deciduous forests, thickets,… run
wild with a decrease of diversity
Wet pastures may dry up by acid
deposition or by decrease of alkali
ground water
Sodding is a solution
Deciduous forests may encounter
a shortage of Mg
Forests will know an accelerated
succession and an increase of
nitrophilous plants
Some species will dominate, while
others will vanish by competition
37Global
warnings
38. Eutrophication and solutions
Surface-flow wetlands, Friesland
Mozaic of aerobic and anaerobic
patches
Extensive root systems and air
filled nerves conduct O2 …
…as a crucial property on
anaerobic soils
Surface-flow wetlands supported
by a wide variety of soil types, can
be used for N- and P-removal
Reedbeds can be a palette of reeds
(Phragmites sp.), sedges e.g. tule
(Schoenoplectus acutus), cattails
(Typha ssp.),…
Ammonification in the aerobic and
anaerobic layers converses organic
N to NH4
+…
…which oxidizing bacteria transform
to NO3
-
Denitrification in anaerobic layers
produces N2O and N2 from NO3
-
PO4
3- collides with clay particles or
metals (Al3+, Fe3+,…)
Sedimentation and removal of
biomass reduces N and P in the
environment 38Global
warnings
39. The O3 layer: a protective shield for all life on earth
Reduction O3 to O2 is a chain
reaction of Cl
Optimal at -80 , in the polar
stratosphere during Antarctic winter
UV mainly damages amino acids
3% less O3 > 20% more chance of
skin cancer
Sources of depletion:
CFCs (life span of more than
100 y), since 1930 frequently
used in air conditioning,
refrigerators
CCl4, CH3CCl3, halocarbons, NOx
High concentrations of H2S, CH4
Montreal (1987): 85%
reduction CFCs by 2007
Lowest amounts of ozone found
over the Antarctic during
southern spring in October
Marine life, birds, algae and
plankton show a decline of
growth in the Antarctic zone
Some alarming holes in the
Arctic layer were observed
39Global
warnings
43. Ozone depletion over the Arctic in 2011
The ‘Dobson unit’ is a convenient
measure of the columnar density of
ozone overhead
One Dobson unit refers to a layer of
ozone that would be 10 µm thick
under standard temperature and
pressure
300 DU of ozone brought down to the
surface of the earth would occupy a
layer only 3 mm thick
The extent of ozone depletion in the
early spring 2011 was comparable to
that in the Antarctic ozone hole
Ozone depleted skies covered
Scandinavia and the northern Russia,
resulting in increased levels of
ultraviolet radiation
43Global
warnings
44. ‘World avoided’ without ban CFCs
Left: ozone layer in 2009
Right: the ozone layer without ban
Note: red indicates high concentration O3,
blue indicates low concentrations
44Global
warnings
45. Pollution of oceans by plastic and trash
Fish, turtles, marine mammals and about 44%
of all seabirds e.g. royal terns (Sterna
maxima), northern fulmars (Fulmarus
glacialis),… mistake plastic for food or get
entangled in it
Plastic-derived chemicals can cause cancer in
humans and simpler life-forms may be more
susceptible than we are
Plastic debris - most of it smaller five mm -
are dispersed over millions of square miles of
ocean and miles deep in the water column
Solutions include improving the public’s
awareness, reducing the use of plastics and
enforcing laws to punish habitual litterers
The graph shows the average number of
trash items counted for several years along a
popular 7-mile stretch of Mustang Island Gulf
Beach, Texas 45Global
warnings
46. Harmful invasive species
If funds are limited, control of A1
species is the main priority
Eradication is only possible in
starting populations with habitats
not fully colonized
Management A2 species:
prevention of further distribution,
particularly in nature reserves
Invasive species have a
negative impact on biodiversity,
economy or health
Damage is correlated to the
integration and ecological
impact
Distribution and invasion of
black list species must be
checked at an early stage
If a species is too harmful,
eradication is appropriate
E.g. brown rats (Rattus
norvegicus) and common carps
(Cyprinus carpio)
46Trojan
horses
47. Black lists
A1-species: e.g. the red-eared
slider (Trachemys scripta
elegans), is omnivorous and an
ardent predator
Considered less harmful as
originally thought
Reproduction is not possible in
Western Europe, because the
embryo doesn’t survive cold
winters
Reproducing populations in
southern Europe
Prohibition of 1997 was evaded
by import of the cumberland
slider (Trachemys scripta
troosti)
47Trojan
horses
48. Examples of harmful exotic species
A1- Ludwigia grandiflora
Water primrose (Ludwigia grandiflora)
Invasive neophyte
Kleine Nete Retie,
Kasterlee, Herentals,
Grobbendonk (Belgium)
Escaped from garden ponds
The water primrose is being
controlled, but mechanical
removal is an awkward
manoeuvre
Vegetative reproduction
from parts of a plant makes
eradication a titanic job
48Trojan
horses
49. Original distribution of the water primrose
This species has a disjunct distribution with a 1st
area ranging from Pennsylvania to Texas, a 2nd in
California and Oregon and a 3rd in Brazil,
Argentina, Chili, Uruguay and Paraguay 49Trojan
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51. Examples of harmful introduced
species A1 – Rana catesbeiana
The bullfrog is native to
North-America
Introduced for the rear legs or
as inhabitant of garden ponds
The bullfrog, able to catch birds
and mammals as prey, is
enormously harmful to the
native fauna
Ecosystems near the German
Rhine has to cope with
reproductive populations
In spite of a prohibition on
import, trade lingers on
51Trojan
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52. A2 - Introduced species: e.g. black
cherry (Prunus serotina)
Alder buckthorn (Frangula alnus)
host to the caterpillar of the
brimstone (Gonopteryx rhamni),
the holly blue (Celastrina argiolus)
and the brown hairstreak (Thecla
betulae)
Asian knotweed (Fallopia japonica),
another example of an A2-species,
is one of earth’s most invasive
plants
Introduced from America in Europe
in the 19th century for timber
In the 20th century applied as a
soil improver under pine trees
Invasive in forests, especially on
acid and sandy soils
Pollination by different species of
Diptera, Hymenoptera, Coleoptera
Strongly competitive through
tolerance of shade and
maintenance of saplings
Colonizing by fast fruiting and
crowding out of Frangula alnus,
Prunus padus, Quercus robur,…
Leaves are toxic to cattle
Control by pathogenic fungus
Chondrostereum purpureum
52Trojan
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53. A2 - Introduced species: e.g. giant
hogweed (Heracleum mantegazzianum)
Mass vegetation of giant
hogweed, Boxmeer, Netherlands
By forming dense stands they can
displace native plants and reduce
wildlife interests
Giant hogweed, native to Central
Asia and much appreciated by
beekeepers, was introduced into
Europe and North-America
Being a threat to natural
ecosystems, this plant is also
dangerous to human health
Contact with the toxic giant
hogweed sap leads to severe burns
Each plant produces between 30
000 and 50 000 winged seeds
Its regenerative capability means
that even an isolated plant is
capable of founding a new colony,
especially in presence of
waterways, wind or human activity
53Trojan
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54. A2 - Introduced species: e.g. Egyptian
goose (Alopochen aegyptiacus)
Egyptian goose (Alopochen
aegyptiacus) in a typical
menacing flight
Shelduck (Tadorninae), related to
the common shelduck
They are found mostly in the Nile
Valley and south of the Sahara
In 1967 some individuals escaped in
the Netherlands and Belgium and
the species is nowadays commonly
observed
Stabilization, within the recent years
there has been a further growth of
the population
Not harmed by cold winters
‘Trade mark’: aggression
Squatting the nest of other
waterfowls, hawks and buzzards
54Trojan
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55. A2 –Introduced species: e.g. harlequin
ladybird (Harmonia axyridis)
Harlequin ladybirds, easily
recognizable by the white
markings on their pronotum
("M"- or "W"-shaped black
area)
Harlequin ladybird (Harmonia
axyridis)
Introduced as herbivore of mildew
and as predator of aphids in
greenhouses
Reproduces freely in the
ecosystems of Western Europe
Ecological consequences are
considerable: as generalist species
and super predator it chases away
and predates on indigenous species
Wintering behaviour inside buildings
55Trojan
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56. Introduced species and evolution
In the African Great Lakes, the tribe of
Haplochromini (Cichlidae) have radiated
to fill almost all major niches, mostly
because of different food habits and
courtship
More than 300 adaptive types in Lake
Victoria alone
Paralabidochromis chilotes: with
thickened lips, preys on insects
Haplochromis obliquidens: grazes on
algae
They are being extinguished by the
giant Nile perch (Lates niloticus)
Introduced as a game fish by Ugandan
officials in the 1920s
Being a fat fish, a lot of wood is
required to get it done, promoting
deforestation and erosion
Local fishermen were being deprived of
their income
56Trojan
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57. Introduced species and evolution
R. pomonella on hawthorn
Both races of the maggots
are still resigned to the same
taxon
4 – 6% hybridisation between
the races
The apple maggot (Rhagoletis
pomonella) infects apple trees,
introduced into North America from
Europe around 1800
Before the arrival of apples from
Europe, it was mainly found in
hawthorns (Crataegus sp.)
The apple feeding race does not feed
on hawthorns and vice versa
This is an example of an early step in
the evolution of new species by means
of an extra choice of a new foodplant,
a case of sympatric evolution
The possible emergence of a new
species of Rhagoletis also appears to
drive the speciation among its
parasites
57Trojan
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58. Introduced species and evolution
The graph shows the temporal gap between the
two races of Rhagoletis pomonella (Bush 1969)
The imago appears before the trees set fruit
Parasitoid ichneumon wasps can be launched in
case of a plague
The ‘apple race’, with 70% less parasitoid
infection, is better protected against the wasps,
seen that the larvae live deeper inside the fruit
as the female wasps can drill their ovipositors
58Trojan
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59. Introduced species and evolution
Rhagoletis pomonella with Batesian
mimicry: the markings on the wings closely
resemble the forelegs and pedipalps of
jumping spiders (Salticidae), this way
avoiding predation by them
59Trojan
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61. IUCN Red List of Threatened Species 2008
61Local flora &
fauna under
assault
62. Threatened taxa: breeding birds in
Belgium and the Netherlands
Common cuckoo (Cuculus canorus)
Declining populations in all countries
of Western and Central Europe
More than 20 000 (1987), less than
10 000 (2009) breeding pairs in the
Netherlands
Use of insecticides affects the
cuckoos, who are dependent on insect
eating hosts
Climate change causes some hosts to
breed earlier (e.g. the robin), in
disfavour of the young cuckoo who
hatches best first…
… to eject the other eggs
Mimic cuckoo eggs in a nest of a
great reed warbler (Acrocephalus
arundinaceus)
62Local flora &
fauna under
assault
63. Threatened taxa: breeding birds in
Belgium and the Netherlands
Barn swallow (Hirundo rustica)
The most widespread species of
swallow in the world is not
endangered, but local populations
decline due to specific threats such
as the destruction of a reed bed with
three million birds for the
construction of an airport in Durban
In the 70s more than 200 000
breeding pairs shift to less than
30 000 in 2009 in Belgium
Habitat reduction by replacement of
old barns by more modern ones …
...of which owners keep out nests
for (supposed) hygienic reasons
High pressure cleaning and
whitewashing chase the birds away
For humans they are attractive birds
feeding on insects and therefore
they have been tolerated
63Local flora &
fauna under
assault
64. Threatened taxa: breeding birds in
Belgium and the Netherlands
House sparrow
(Passer domesticus)
Cities and villages nowadays have a
shortage of available nesting sites
In Western Europe and in the
Netherlands pre-eminantly, where it is
considered an endangered species,
numbers have dropped
Replacement of horses by combustion
engines, air pollution, use of toxics
against insects and plants are
contributing factors
The house sparrow is a seed eater
The hatchlings need insects for
fledging
Invasive in North America and
Australia since the 19th century
64Local flora &
fauna under
assault
65. Threatened taxa: breeding birds in
Belgium and the Netherlands
Nightingale
(Luscinia megarhynchos)
Dutch and Flemish red lists label the
nightingale as vulnerable: 7 500
breeding pairs
Reason of decline: biotope of marsh
forests and pastures disappear more and
more by depletion of groundwater
Drought during roosting in the south of
the African continent provides fewer
insects
Loud songs with an impressive variation
of whistles, are particularly noticeable at
night because few other birds are
singing
Nightingales sing even louder in urban
environments, in order to overcome the
background noise 65Local flora &
fauna under
assault
66. Threatened taxa: breeding birds in
Belgium and the Netherlands
Ficedula hypoleuca nests in
holes and can be helped by
supplying nesting-boxes
It has a preference for oak trees
The pied flycatcher is a victim of
global warming
Being migratory over long
distances, this bird is being
confronted with an earlier spring in
the temperate zones
A prerequisite to breed is an
abundance of insects
The pied flycatcher hastened its
breeding season by 10 days, by
which less recuperation is granted
The UK population has declined by
43% in the past decade,
decreasing breeding performance
being a major factor
As breeding performance is
declining, breeding-based
strategies such as habitat
management remain useful
conservation tools 66Local flora &
fauna under
assault
67. Threatened taxa: breeding birds in
Belgium and the Netherlands
A corn bunting (Miliaria calandra)
and a European bee-eater
(Merops apiaster) sharing private
business
Former has declined in northwest
Europe due to intensive agricultural
practices depriving it of its food
supply of weed seeds and insects
The corn bunting has recently
become extinct in Ireland where
it was once common
The Flemish population declines
by 5% every year, in 2005 it fell
to 150 breeding pairs
Referring to Flanders, the
fieldfare (Turdus pilaris), the
Montagu’s harrier (Circus
pygargus), the wheatear
(Oenanthe oenanthe), the golden
oriole (Oriolus oriolus), the
bullfinch (Pyrrhula pyrrhula), the
great grey shrike (Lanius
excubitor) a.o. illustrate this
negative trend
67Local flora &
fauna under
assault
68. Other threatened taxa in Belgium and the
Netherlands
The brown long-eared bat
(Plecotus auritus), endangered in
Belgium and the Netherlands
Roost sites in tree holes or buildings
are often thought of as ‘untidy’
Pesticide use has devastating effects,
causing severe decline in insect prey
abundance, and contaminating food
with potentially fatal toxins
Insecticides applied to timber inside
buildings where roosts occur are a
particular danger
An agreement on the Conservation of
Bats in Europe under the auspices of
the Bonn Convention, also known as
the Convention on Migratory species
(CMS) is in force, and all European
bats are listed under Appendix II of
the CMS
68Local flora &
fauna under
assault
69. Other threatened taxa in Belgium and the
Netherlands
Common midwife toad
(Alytes obstetricans)
Males carrying with them the eggs from
March until August
The common midwife toad
is a pioneer species,
preferring a habitat with
pools, hiding places and
lots of sunlight
Overgrowth of its habitat by
succession makes
populations decline
The tadpoles can linger in
chalk quarries and
holloways with waters
considered ecologically
‘bad’
69Local flora &
fauna under
assault
70. Other threatened taxa in Belgium and the
Netherlands
Yellow-bellied toad
(Bombina variegata)
Critically endangered in Belgium
Biotope: small-scale and
extensively managed hills and
loamy soils e.g. marl quarries
Habitat: marshes, rivers with
natural inundations and
continuous displacing waters
Undeep waters with a minimum of
vegetation and lots of sunlight,
where high temperatures may be
achieved without competition of
other amphibians
Tractor tracks as temporarily
reproduction pools are ideal
70Local flora &
fauna under
assault
71. Other threatened taxa in Belgium and the
Netherlands
European tree frog (Hyla arborea)
Main threats include draining &
pollution of wetlands, acidification and
habitat fragmentation
Beside these, use of fertilizers and
pesticides, and introduction of trout in
ponds account for the decline
Habitat: sunlit vegetations,
wooded banks, cattle ponds
and forest edges, preferring
the transition between water
and shrubs
They tend to avoid dark or
thick forests, eggs need a
minimum of 15° to hatch
As opposed to other frogs,
they don’t jump away in case
of mowing: they confide on
their camouflage
71Local flora &
fauna under
assault
72. Other threatened taxa in Belgium and the
Netherlands
Pine martens (Martes martes)
can reduce the population of
grey squirrels…
…stimulating the population of
native red squirrels who are
better camouflaged and move
less on the ground
Pine martens have a broad diet
consisting of small rodents, birds,
beetles, carrion, eggs and berries
They prefer well-wooded areas
In the Netherlands they were
heavily persecuted in the past
Current threats include human
disturbance, illegal poisoning
intended to kill foxes and crows and
fur trade
Wildlife corridors and eco-
engineering made numbers in
Flevoland increase
The Netherlands have a population
of 350 adult animals
After an absence of decades in
Flanders, an injured animal was
spotted in the center of Kalmthout
in ’07, in September ‘11 a pine
marten was seen in De Panne72Local flora &
fauna under
assault
73. Other threatened taxa in Belgium and the
Netherlands
The hazel dormouse (Muscardinus
avellanarius), a member of the Gliridae
family, is a rare sight in Belgium
On loess covered hillsides, on
riverbanks, in oak forests rich in food
providing trees (nuts, berries, bark, ...)
Tree or shrub dweller, rarely seen on
ground level, nocturnal
It has low mobility, but can colonize
new territory via hedgerows
Hibernates, torpor during the summer
months in case of food shortage
The hazel dormouse has limited
distribution and is endangered, has
disappeared from the wild in the
Netherlands
73Local flora &
fauna under
assault
74. Other threatened taxa in Belgium and the
Netherlands
The burbot (Lota lota) is the
only cod-like fresh water fish
Top predator preferring clear
streaming water or clean, deep lakes
The burbot spawns early, larvae die in
temperatures over 6°C
Dependant on flooding of river valleys
Considered extinct in Belgium since
1970
In 1999, the Flemish government
developed a reintroduction program
Primary threats are declining quality
of water and destruction of spawning
beds
Endangered but not legally protected
in the Netherlands, legal protection
does exist in Belgium
74Local flora &
fauna under
assault
75. Other threatened taxa in Belgium and
the Netherlands
The last known European crayfish (Astacus astacus) in Flanders
was caught in Lanaken in 1945
In the Netherlands the species has been introduced in some small
lakes of the Veluwe
Once abundant throughout Europe, it is listed as Vulnerable (IUCN
‘11) due to the crayfish plague carried by the invasive American
species signal crayfish (Pacifastacus leniusculus)
75Local flora &
fauna under
assault
76. Other threatened taxa in Belgium and
the Netherlands
The large blue (Maculinea
arion) caterpillar transforms
into the butterfly adult inside
Myrmica sabuleti ants’ nest
The large blue became extinct in the
United Kingdom in 1979 due to the
loss of the short turf habitat when
rabbits died out during the
myxomatosis crisis
One out of ten species of butterflies in
Europe are threatened with extinction
In Flanders, the situation is even more
severe: out of 64 native species 18 are
lost and 2/3 is threatened or on the
verge of extinction
Intensive farming, global warming and
tourism led to this disastrous result
76Local flora &
fauna under
assault
77. Bee population density levels are
dangerously low
Removing the sealed off drone
breeding cells from the hive 2
to 3 times in May and June can
reduce the infection by half
The Varroa mite is a parasite that
targets honey bees exclusively, first
found in the Netherlands in 1983
A fertilized Varroa jacobsoni female is
brought into the nest by a bee
The female infects the breeding cells
before they are sealed off with wax
Bee larvae deform because of the
presence of the mite, the drones are
mainly affected
The adult mite feeds on the bee’s
hemolymph
Creates deformities, affects vitality,
introduces infectious pathogens
Import of bees is prohibited,
transportation can be limited77Local flora &
fauna under
assault
78. Severe infection can cause the death of the
entire hive between August and October
Graph: Dietzen Hermann (1988)
Without prevention, the beekeeper will be
confronted with wax moths attacking the hive,
surrounded by dead bees
78Local flora &
fauna under
assault
79. Will global warming bring about a
“beepocalypse”?
Nosema ceranae and N. apis affect the
bees intestinal tract
While cleaning the cells, the bee picks up
a spore
N. apis shows accelerated germination in
CO2-heavy conditions
Bt-pesticides, used for maize
monocultures, act synergistically with the
fungal parasite
Fumagilline may be effective, but the
development of resistance cannot be
ruled out
Hive hygiene is of primary importance
Use of Imidacloprid, a highly toxic
insecticide to bees enhancing colony
collapse disorder, should be forbidden
79Local flora &
fauna under
assault
80. Global threats to taxa
Wellington’s solitary coral
(Rhizopsammia wellingtoni )
1 of the 3 endangered
Galapagos corals
Corals appear on the IUCN list for the
first time (2007)
Charles Darwin Research Station
(Galapagos): 3 types of coral Critically
Endangered
74 Galapagos sea weeds appear on
IUCN
Overfishing increases barnacle
population, which grazes on sea weeds
Marine ecosystems are under global
threat because of rising temperatures
Regional decline because of warmer sea
water, brought about by El Niño (mass
destruction in Costa Rica, Panama,
Ecuador and Colombia in 1982-1983)
Localized decline caused by overfishing
80Biodiversity
threatened
81. 81
Corals, a specialized form of mutualism
between algae en corallites
Porites sp., skeleton
producing coral, can live for
up to a 1 000 years
Scleractinia (Anthozoa) are polyp-like
corallites with a hardened skeleton,
which creates the reef
Algae (Zooxanthellae) convert sunlight
to sugars, corals produce nitrogen
compounds
This symbiosis –and therefore reefs -
can only exist in shallow, clear water
Rising sea levels is a threat to coral
reefs
Increasing levels of CO2 acidifies
oceans, reducing the coral’s ability to
take up calcium and slowing their
growth
Eutrophication (induced by fertilizers)
reduces O2 levels and suffocates algae
Biodiversity
threatened
82. Florida Keys reefs: a degraded
biodiversity hotspot
Elkhorn coral (Acropora palmata),
2006 status: Critically Endangered
Molasses reef reduced by 96%
between 1981 and 1986, in part
caused by a 1986 Panama oil spill
A survey of 105 reefs shows a
decline by 44% between 1996
and 2005
The archipelago –the only tropical
reef belt off the North American
coast- is the 3rd largest with a
diversity of 6 000 species
520 species of fish, 128 species of
starfish, 63 species of stony coral
Reefs become engorged with oil,
lose mucus and become more
susceptible to infections
Solvents used by BP were more
toxic than the oil itself
82Biodiversity
threatened
83. Reasons for the endangerment of taxa
Primary cause: loss of habitat
Deforestation for the benefit of the
wood industry or cattle
WWF focuses on ‘flagship species’ or
‘keystone species’: used as ‘umbrella
species’; what is beneficial to them, is
beneficial to the entire habitat
Lemurs on Madagascar
Mountain gorillas in East Africa
Jaguars in Neotropis
Orang-utans on Borneo,...
Other causes: poaching, introduction of
new species, climate change
Coquerel’s sifaka (Propithecus
verreauxi coquereli)
Below: destruction of rainforest on
Madagascar for wood and livestock
83Biodiversity
threatened
84. Example of endangerment through
deforestation
The aye-aye (Daubentonia madagscariensis)
lives in the rainforests of Madagascar, but
also in the drier northwest and on the islands
Aye-aye, Nosy and Mangabe
Occupies the same niche as the woodpecker
Taps the bark of trees with its elongated
middle finger and listens for edible larvae
Large, overlapping territories of up to 1 km2
Male ranges overlap between 40 and 75%,
and these shared spaces may be occupied by
numerous individuals simultaneously
The rapid loss of their natural habitat due to
encroachment by humans is the main threat
to this species
Hunted because of their habit of eating in
coconut or lychee plantations or out of
superstition 84Biodiversity
threatened
85. Example of endangerment through
deforestation
Daubentonia robusta, which was
three to five times the aye-aye’s
weight, once lived in the dry
southwest, but has become extinct
less than 1 000 years ago
Identical adaptation to a diet of
insects; remarkable because
normally, only small mammals can
live exclusively on insects
Halfway through the 20th century,
people thought the aye-aye had
become extinct, but it was
rediscovered in 1961
Distribution: broad but sparse
85Biodiversity
threatened
86. Loss of habitat and populations
Bighorn sheep (Ovis canadensis) –
Bovidae, southwest USA
Rams have large, curved horns
Canyons, cliffs and deserts, where
water is a prerequisite for survival
Around 1900, total population imploded
to less than 1 000; preservation
restored population size
Main predator is the mountain lion
Populations of less than 100 tend to die
out rapidly
Once population becomes too small,
inbreeding starts to occur
To sustain a population of 1 000, large
carnivores need a territory of 106 ha
86Biodiversity
threatened
87. Genetic erosion
Cheetah (Acinonyx jubatus):
low genetic variation
Population susceptible to
diseases, weakened physical
fitness and a low fertility rate
Wildt (1992) discovered a
deformation of sperm cells for
more than ½ of the cheetahs
20 000 cheetahs on earth are
almost genetically similar
Habitat fragmentation diminishes the
gene pool of endangered low populations
of wild plant and animal species,
affecting their immune system and
viability
Populations of endangered species tend
to be small, with inbreeding, genetic drift
and a loss of heterozygosity as a
consequence
Nevertheless the existence of modern
but expensive techniques, the best way
to prevent genetic erosion is to protect
their habitat and to let them live in it
naturally
Wildlife sanctuaries and corridors to
enable endangered species to travel,
meet and breed can be integrated with
reintroduction and ex situ conservation
87Biodiversity
threatened
88. Removal of keystone species drastically
alters communities
The sea otter (Enhydra lutris) once thrived among the
kelp beds close to shore from Alaska to California
It was hunted by European settlers for its fur, so by the
end of the 19th century it was close to extinction
In places where sea otters disappeared completely, an
unexpected sequence of events unfolded
88Biodiversity
threatened
89. Removal of keystone species drastically
alters communities
Distribution Enhydra lutris
Population worldwide is estimated to be 108 000
IUCN 2000: Endangered
Remaining populations are small and widely
dispersed, causing low genetic diversity
89Biodiversity
threatened
90. Removal of keystone species drastically
alters communities
Sea otters feed mainly on crustaceans, including sea
urchins (Echinoidea)
The disappearance of the sea otter caused a population
explosion for the sea urchin, and because sea weed is
the urchin’s staple food, it turned the seabed that once
housed forests of kelp into a desolate waste
90Biodiversity
threatened
91. Removal of keystone species drastically
alters communities
Above: seabed with kelp forest
Below: seabed from which the sea
otter is absent
Small populations survived near the
Aleutian Islands (chain of islands
between the US and Russia)
Part of this population was moved to
the coasts of Canada and the US to
restore their presence there
As the sea otter population grew, the
number of sea urchins decreased and
kelp forests once again flourished
The gray whale (Eschrichtius robostus)
migrated closer to shore to protect its
young from sharks and to feed on
zooplankton 91Biodiversity
threatened
92. Removal of keystone species drastically
alters communities
Distribution Eschrichtius robostus, ca. 20 000 individuals, 2
populations
IUCN 2008: Critically Endangered in the northwest Pacific
Sea otter population is under threat from overfishing, oil
pollution and predation by Orcinus orca
92Biodiversity
threatened
94. When a species becomes extinct,
it’s gone for good
1 – A species is endangered when it has a
large area of distribution, but is sparsely
dispersed
Bachman’s warbler (Verminora
bachmanii) is the rarest bird indigenous to
the US (Alabama, South-Carolina)
It winters on Cuba and occasionally on Isla
de la Juventud
Area suited for wintering becomes scarce
due to deforestation in favour of sugar
cane plantations and, upon its return, the
male risks not being noticed by females
Habitat: forested swamp valleys, preferably
rich in river cane (Arundinaria gigantea)
94Biodiversity
threatened
95. When a species becomes extinct,
it’s gone for good
River cane also known as ‘switch
cane’, at one time covered an area
from Virginia to Florida and western
Texas
Canebrakes were once a common
feature of the landscape in the
southeastern United States, but today
it is an endangered ecosystem
The cutting down of its habitat and
the draining of swamps are the mean
threats facing the Bachman’s warbler
Last sightings: South-Carolina (1988),
Cuba (2002)
Below: Congaree National Park
(South-Carolina), possibly one of the
last place of refuge for this species
95Biodiversity
threatened
96. When a species becomes extinct,
it’s gone for good
2 – A species is endangered when it consist of a few dense populations,
living in a small area of distribution
Kirtland’s warbler (Dendroica kirtlandii), southern Michigan peninsula,
requires large areas, densely forested with young Pinus banksiana
Between 1961 and 1971, the population fell to 400 birds, in part due to
brood parasitism by the brown-headed cowbird (Molothrus ater)
96Biodiversity
threatened
97. When a species becomes extinct,
it’s gone for good
Research suggests the cowbird exhibits
mobster-like behaviour
They will monitor the nest and destroy it
if their egg is not present
This makes warblers less inclined to
remove the egg, an action for which they
are physically underequipped to begin
with
Originally, the species followed the trek
of the bison, but contrary to the bison,
the bird adapted successfully to life in
open spaces, after the forests east of the
prairie had been cut down
Their reproductive niche complements
their nomadic lifestyle
97Biodiversity
threatened
99. When a species becomes extinct,
it’s gone for good
3 – A species is endangered when it
exists in large populations, distributed
over large areas, but has become highly
specialized to occupy a rare niche
The red-cockaded woodpecker
(Picoides borealis) can only claim 1% of
its original territory, which consists of
pine forests that are at least 80 years
old
To nest, they hollow out cavities in
living, mature longleaf pines (Pinus
palustris)
Offspring aids the breeding pair in
protecting their young, creating a group
that requires an area of ca. 86 ha
99Biodiversity
threatened
100. Predicted to become extinct?...
Hibiscadelphus distans is an
endemic of Kaua’i, Hawaii
In the Lower Koai’e Canyon rest two
existing populations of 20 wild and
150 introduced trees
Despite the extreme rarity of
H. distans, it is the biggest
population of the genus, of which
four of the six species are extinct or
are extinct in nature
H. woodii e.g. with four trees
observed on Kaua’i is even closer to
elemination
100Biodiversity
threatened
102. Predicted to become extinct?...
The Socorro sowbug (Thermosphaeroma thermophilum) is an
aquatic crustacean that has lost its natural habitat and survives in
an abandoned bathhouse in New Mexico
The relict population took this refugium after the well where the
sowbugs lived was shut down in 1970
Genetic and physiologic divergention demonstrates apart from the
possible speed of evolution an extra threat if the species has to
survive in the wild again
102Biodiversity
threatened
103. Lost?....
Spix’s macaw (Cyanopsitta spixii) is
limited to palm groves and river-edge
woodland across southern Pará, Brazil
Poaching by bird fanciers, paying up to 40
000 $ for a single bird, has driven the
Spix’s macaw to a population of four birds
left in the wild
The decline was hastened by imported
Africanized bees, whose colonies occupy
the tree holes favored by the macaw
By late ‘90 only one single male was left in
the wild, according Tony Juniper of the
International Council for Bird Preservation,
‘being desperate to breed’
103Biodiversity
threatened
104. Biodiversity in danger during the past
Moa-nalo is a general term for all
extinct flightless goose-like ducks
The proof of their existence is
hidden in the sinkholes of the
Ewa Plain caves, where they were
imprisoned and died
Polynesians colonized the Pacific
islands from Tonga to Hawaii from
8000 BC on
They subsisted on crops and
domestic animals carried in their
canoes
To complete their diet, the
voyagers ate their way through the
endemic fauna
When European settlers arrived
after Captain Cook’s visit in 1778,
there were 50 native species of
landbirds in Hawaii
Bone deposits show that another
35 species had already been
extinguished by the native
Hawaiians 104Biodiversity
threatened
105. Biodiversity in danger during the past
Simulation of the hunting for
Dinornis giganteus
Before the Maoris arrived in New
Zealand around 1300, it was home to
11 species of moas (Emeidae and
Dinornithidae), the largest weighing
230 kg
In a period of ± 150 years all of them
have become extinct
They had undergone a radiation filling
many niches, seen the lack of
moderate and big mammals
On South Island, the deposits are piled
with moa bones dating from 1100 to
1300
105Biodiversity
threatened
106. Biodiversity in danger during the past
Haast’s eagle (Harpagornis moorei), twice as large as a
golden eagle, was the only natural enemy of the moas
The largest eagle known to have ever existed became
extinct in ± 1400 when its major food sources, the moas,
were hunted to extinction by humans and much of its
dense forest habitat was cleared
106Biodiversity
threatened
107. Biodiversity in danger during the past
Fully isolated for 70 million years, Madagascar was the theater
for a biological tragedy like New Zealand’s
The Indonesian Malagache pioneers, extinguished from 500 to
1000 the seven species of elephant birds (Aepyornithidae),
including A. maximus, the world’s largest bird
Also erased were seven of the seventeen genera of lemurs
107Biodiversity
threatened
108. Biodiversity in danger during the past
Quaternary (2,6 million year BC- 0)
extinctions, beside being caused by the ice
ages, appear to have occurred where naive
animals encountered humans
Paleo-Indians throughout America, Dutch
sailors on Mauritius –to meet and extirpate
the dodo -, Polynesians across the Pacific
were constrained by neither knowledge of
endemicity nor any ethic of conservation
The hunters were selective in their choice of
taxa, with a concentration on large
mammals and flightless birds
They ignored other species e.g. small
rodents
‘Human hunters help no species’ Edward O.
Wilson in ‘The Diversity Of Life’, 1992
108Biodiversity
threatened
109. Narrow habitats, extensive specialization and
limited dispersal may put species at risk
Freshwater and land molluscs are
vulnerable to extirpation because they are
specialized for life in narrow habitats
As a result of a miniature adaptive
radiation, the fungus grazing tree snail
genus Achatinella is endangered by
introduction of the carnivorous Euglandina
sp.,…
… loss of habitat, predation by rats and
through human collection
Moorean endemic tree snail species are
exterminated since 1987, on Tahiti the
same sequence is now unfolding
Achatinella sowerbyana, Euglandina
rosea
109Biodiversity
threatened
110. The critical predicament of biodiversity is
epitomized by Banara vanderbiltii
250 of the 20 000 plant species
known in the US are extinct, another
680 are in danger of extinction
(2000)
About ¾ of these occur in only five
places: California, Florida, Hawaii,
Puerto Rico and Texas
In 1986 the population of Banara
vanderbiltii was down to two plants
growing on a farm near Bayamon
(Puerto Rico)
Cuttings were obtained and are now
successfully growing in the Fairchild
Tropical Garden, Miami
110Biodiversity
threatened
111. Fungi in the midst of a mass extinction
Inventarisations in Germany, Austria and the Netherlands have
revealed a 40 to 50% loss in species during the past 60 years
The main cause of this decline appears to be air pollution
Many of the vanished species are mycorrhizal fungi, enhancing
absorption of nutrients by the roots of plants
Ecologists wonder what would happen to land ecosystems without
fungi, and we will soon find out
Russula rubra, extinct in Belgium in 1949
111Biodiversity
threatened
112. Rifle shots and holocausts
Large, conspicuous organisms receive the greater part of man’s
malign attention rather than sowbugs and spiders
Conservationists now recognize the difference between rifle shots
or the extinction of one species and holocausts, the destruction of
the entire ecosystem
The Javan rhinoceros (Rhinoceros sondaicus) cannot be saved if
the remnant woodland in which they live is cleared
The biggest players in a community are the ‘keystonespecies’,
serving as umbrellas for all life around them 112Main
biodiversity
hotspots
113. Rifle shots and holocausts
Even the most optimistic estimate suggests there are approximately
40 Javan rhinos in the wild on Java
Deforestation, Agent Orange and particularly the trade in horns for
traditional Chinese medicine, fetching a price 30 000 $/kg, brought
the population on the brink of extinction
Once widespread from Java and Sumatra to China and India
The Javan rhinoceros’ range has been shrinking for at least three
millennia to an area of 300 km2, insufficient to restrict inbreeding
113Main
biodiversity
hotspots
114. Ecosystems deserving immediate
attention
Usambara Mountain forests, Tanzania
Birds include the green headed oriole
(Oriolus chlorocephalus), one of the
species of the Amani Forest Nature
Reserve
The total area is about 836 km2, of
which 450 km2 is covered with forest
With more than 2000 plant species of
which about 25% are endemic and with
140 endemic tree species, Amani has
been declared as one of the 25
biodiversity hotspots
Overpopulation, poverty, invasive
vegetation, deforestation and soil
erosion are the main threats
114Main
biodiversity
hotspots
115. Ecosystems deserving immediate
attention
The long-billed forest warbler (Orthotomus
moreaui), is an endemic songbird living in the
Amani Forest Nature Reserve
Endangered, threatened by loss of montane
forests 115Main
biodiversity
hotspots
116. San Bruno Mountain, California
Scientists said San Francisco is notorious in
international lepidopterist circles for its long
list of disappearing butterflies
Of the 54 species that lived in San
Francisco around 1900, only 34 remain
The San Bruno elfin butterfly (Callophrys
mossii bayensis) with its typical lycaenid
interaction with ants, is restricted to a few
small populations
Host plant: Sedum spathulifolium
Native fauna and flora is diminished by off-
road vehicles, quarrying and invasive
Eucalyptus species, gorse (Ulex
europaeus),…
116Main
biodiversity
hotspots
117. Oases of the Dead Sea Depression,
Israel and Jordan
These humid refuges in a desert area, called ghors, are isolated
tropical ecosystems sustained by freshwater springs
True pockets of an ancient flora and fauna restricted to the vicinity of
ghors or even to a single spring, are joined by species that flourish
thousands of kilometers to the south
The springs are populated with endemic Cichlidae, the banks with e.g.
weaver ants (Oecophylla sp.) and the surrounding rocks with a.o. the
Nubian ibex (Capra nubiana), from which the wild population is
estimated at ± 1 200 animals (IUCN 2008) 117Main
biodiversity
hotspots
118. Oases of the Dead Sea Depression,
Israel and Jordan
The Nubian nightjar (Caprimulgus nubicus), found from Kenya to
Oman, has places for brooding in the oases
The oases are threatened by overgrazing, expansion of a quarry
and commercial development
118Main
biodiversity
hotspots
119. California floristic province
This Mediterranean-climate domain, stretching from Oregon to Baja
California and recognized by botanists as a separate evolutionary
center, contains ¼ of all plant species of the US
The hotspot is home to the giant sequoia (Sequoiadendron giganteum)
and holds some of the last individuals of the Critically Endangered
California condor (Gymnogyps californianus), here with common
raven escort
Wilderness destruction is caused by commercial farming, pollution and
road construction 119Main
biodiversity
hotspots
120. Slash & burn in Madagascar
The most basic need for the Malagasy - putting food on the table -
far exceeds that of biodiversity and forest conservation
One has only to fly over the coast or sail along the shore to see how
the red soil of Madagascar is washing into the sea
30 primates, all lemurs; reptiles and frogs (as sole amphibians) that
are 90% endemic illustrate the unique richness of nature
2/3 of all chameleons of the world live on the island
120Main
biodiversity
hotspots
121. Slash & burn in Madagascar
80% of the 10 000 plant species is endemic
Since the military coup by the current leader Rajoelina (2009),
forest conservation efforts in Madagascar have been reversed
and illegal logging has grown into a major revenue
Former President Ravalomanana protected forests and
promoted sustainable agriculture
Brookesia minima, world’s smallest chameleon
121Main
biodiversity
hotspots
122. Slash & burn in Madagascar
Adansonia is a genus of eight
species of trees, six native to
Madagascar, one native to mainland
Africa and one to Australia
The six Malagasy species are on the
IUCN Red List of Threatened Species
Adansonia madagascariensis -
Madagascar baobab
They are pollinated by a diverse
fauna of lemurs, moths, bats and in
Africa by e.g. galagos species
(Galagidae)
The fruits contain more vitamin C
than oranges
122Main
biodiversity
hotspots
124. The fossa (Cryptoprocta ferox) is the island's
largest surviving endemic terrestrial mammal
Fossas are particularly vulnerable to extinction by forest
fragmentation, dwindling lemur populations and the persecution
by farmers to protect their poultry
IUCN 2008: Vulnerable, over the course of the last 21 years, there
has been a population reduction exceeding 30%, with a current
population size of less than 2 500 animals (Hawkins and Racey 2005)
and ±400 breeding adults 124Main
biodiversity
hotspots
125. Lower slopes of the Himalayas
Lush mountain forests encircle the southern and eastern edges of the
Himalayas
The fauna and flora is a complex mixture of tropical species of
southern origin and temperate species from the north
The succession of deep valleys and sharp ridges divides the fauna and
flora into large local assemblages, displaying for example 9 000 plant
species of which 40% are limited to the region
Red panda (Ailurus fulgens), Vulnerable, less than 10 000 individuals
face the risk of inbreeding (Nepal to China) 125Main
biodiversity
hotspots
126. Lower slopes of the Himalayas
Snow leopards (Uncia uncia) occupy
alpine and subalpine areas generally
3 350 and 6 700 meters above sea
level in Central Asia
Snow leopards have stocky bodies,
long thick fur, small and rounded ears
as adaptations to cold mountainous
environments
Considerable predation of domestic
livestock occurs which brings this
opportunist, first described in 1775
into direct conflict with humans
Home range varies with density of
prey (12 – 1000 km2)
Wild population maximum 6 500
Densely populated regions put
pressure on the virgin woods, down by
2/3 through logging,… 126Main
biodiversity
hotspots
127. Western Ghats, India
These moist, deciduous forests and
montane rain forests have a unique
floral composition
Former is the habitat of teak (Tectona
grandis), a lot of which were illegally
and extensively cut in the 20th century
The latter are dominated by evergreen
forests characterized by trees of the
Lauraceae a.o. Litsea oleoides
(Kerala, Tamil Nadu)
18 endemic species of this genus thrive
in the Ghats, of which three have a very
limited range
The family, with many relic species, has
its origin in the coastal laurel forests of
Gondwana
127Main
biodiversity
hotspots
128. Western Ghats, India
The potential for dam
developments to inundate vast
areas of its habitat also means
that the status of the purple
frog is extremely precarious
The purple frog (Nasikabatrachus
sahyadrensis) is the sole
representative of an ancient lineage
of frogs that has been evolving
independently for over 130 million
years after the break up of Gondwana
The purple frog is described as a
‘living fossil,’ closest relatives being
four tiny frog species found in the
Seychelles in the Sooglossidae family
Formally discovered in 2003, the
purple frog spends most of the year
underground, surfacing only to mate
during the monsoon
The purple frog is thought to be a rare
species, although it is hard to find
Known from only 135 individuals, of
which only three are female128Main
biodiversity
hotspots
129. Western Ghats, India
The Nilgiri Biosphere Reserve is home to the biggest population of
the Asian elephant (Elephas maximus)
It is also an important refuge for tigers
More than 6 000 Asian elephants roam in the Western Ghats of
Karnataka (2004)
About a third of the cover of the Ghats is gone already, the
remainder is disappearing by 2-3% a year, fragmented due to clear
felling for coffee, tea, teak, cardamom and ginger
129Main
biodiversity
hotspots
130. Central Chile
This Mediterranean vegetation is
characterized by a high degree of
endemism through its geographic
isolation
Chile is separated from the rest of the
continent by the high mountain range of
the Andes along its length, dry deserts
in the north and frozen ice-fields in the
Patagonian south
The flora of Central Chile contains 3
000 plant species, half of the entire
Chilean flora, crowded into 6% of the
national territory
The surviving cover is only 1/3 of the
original and is located in the most
densely populated part
Puya alpestris, Bromeliaceae
130Main
biodiversity
hotspots
131. Central Chile
In earlier times the Chilean palm (Jubaea chilensis) was to be
found throughout Central Chile, but it is almost extinct due to the
destructive extraction process of its sap
The sap from the trunk produces a fermented beverage, collecting it
requires felling the tree, restricting this forest type to some valleys
in La Campana and Las Palmas de Cocalan
131Main
biodiversity
hotspots
132. Central Chile
The high mountain lizard (Phymaturus palluma) inhabits montane
grasslands with elevations up to 3 000 m and exhibits a
thermoregulation of darkening to absorb more heat
Central Chile and West Argentina, herbivorous, viviparous
132Main
biodiversity
hotspots
133. The Colombian Chocó
In the core of the Chocó the Pangan
Nature Reserve encompasses 12 000
acres of super-wet tropical rain forest
Unexplored for the most part, as many
as 10 000 plant species grow here, of
which ¼ are estimated to be endemic
Keystone species include the spectacled
bear (Tremarctos ornatus), the only bear
species native to South America, the
threatened banded ground cuckoo
(Neomorphus radiolosus) and baudó
guan (Penelope ortoni)
Populations of baudó guan are extremely
sensitive to selective logging, hunting for
gold, oil palm and illegal coca plantations
133Main
biodiversity
hotspots
134. The Colombian Chocó
Baudó guan, blue poison dart frog
(Dendrobates azureus), the latter
found only in the Pangan Nature
Reserve, as example of an organism
with aposematic coloration to warn
predators for its toxic alkaloid
secretions
Since the early ’70s, the Chocó has
been relentlessly invaded by timber
companies and, to a lesser extent, by
poor Colombians searching for land
The forests are already down to ¾ of
their original cover and are still being
destroyed at an accelerating rate
134Main
biodiversity
hotspots
136. Western Ecuador
Wilson, The Diversity Of Life, 1992
In 1978 Gentry & Dodson documented 90
plant species unique to the Centinela ridge in
Ecuador
The cloud forests in which they grow are
ecological islands surrounded by lowland rain
forests and closed off by the treeless paramos
Among the plants, mainly epiphytes and
orchids, were 38 endemic species, many of
which were unusually dark-leafed
By 1986, the botanical oasis was cleared: 96%
of the forests on the Pacific side have made
space for agriculture
A few of the endemic plants have persisted in
the shade of cacao trees
Wilson refers to similar extinctions around the
world as ‘centinelan extinctions’, Janzen
speaks of ‘living dead’
136Main
biodiversity
hotspots
137. Western Ecuador
South of Centinela, the Rio Palenque Science
Center a.o. collaborates in protection and
research of less than one km2 forest remnants
There are 1 200 plant species in this area, ¼
of them endemic to western Ecuador
In 1993, Dodson & Gentry identified 650 bird
species, by which the degree of endemism is
among the highest in the world
The Global Trees Campaign is working on
reforesting 40 hectares of the Awacachi
Corridor with native trees and raising
awareness in local communities to conserve
the area
Planting the endemic Carapa megistocarpa
(Endangered IUCN 2011)
137Main
biodiversity
hotspots
138. Western Ecuador
The harpy eagle (Harpia harpyja), a former inhabitant of
the canopy layer of the Centinela ridge and Rio Palenque
Americas most powerful raptor can be seen in lowland rain
forests, but is rare throughout its range
138Main
biodiversity
hotspots
139. Uplands of western Amazonia
Tertiary alluvial uplands of evergreen rain
forests engirdle the Putamayo (Colombia,
Peru), the Caquetá (Colombia), the Amazone
and the Napo river (Peru)
Common tree species of the upper canopy
are the kapok tree (Ceiba pentandra),
Terminalia amazonia, Cedrelinga
catenaeformis, Carapa guianensis and the
rubber tree (Hevea guianensis), forming the
scenery of primates e.g. the equatorial saki
(Pithecia aequatorialis), marmosets
(Callithrix sp.), jaguars, bats e.g. the
southern little yellow-eared bat (Vampyressa
pusilla), three species of anteaters, manatees
(Trichechus sp.) and tapirs (Tapirus
terrestris) nearby or in the rivers
139Main
biodiversity
hotspots
140. Uplands of western Amazonia
Tapirus terrestris, Vampyressa pusilla
500 species of birds populate the
Amacayacu National Park e.g. the pavovine
quetzal (Pharomachrus pavoninus), the
golden-winged tody-flycatcher
(Todirostrum calopterum) and the endemic
ochre-striped antpitta (Grallaria
dignissima)
Reptiles are represented by e.g. the
Arrau turtle (Podocnemis expansa)- the
largest fresh water turtle-, the spectacled
caiman (Caiman crocodylus) and the green
anaconda (Eunectes murinus)
The Tarapoto’s lake is renowned for its
pink dolphin’s community (Inia geoffrensis)
140Main
biodiversity
hotspots
141. Uplands of western Amazonia
Pavovine quetzal (Pharomachrus pavoninus)
Melanine organized in platelets renders the males a striking
iridescent coloration
141Main
biodiversity
hotspots
142. Uplands of western Amazonia
The diminutive pygmy marmoset (Callithrix pygmaea) is
the smallest monkey in the world, weighing only 120 g
Female pygmy marmosets are slightly heavier than males
They can produce a variety of vocalisations, including a sharp
warning whistle and a clicking sound to indicate threat
142Main
biodiversity
hotspots
143. Uplands of western Amazonia
Inia geoffrensis
The Amazon Pink river dolphin is on the verge of
extinction in the Amazon river basin
Pollution from agriculture, heavy metals from industry
and mining, as well as hydroelectric dams are to blame
143Main
biodiversity
hotspots
144. Uplands of western Amazonia
A large part of the ecoregion is intact, but still
vulnerable to advancing palm oil and coca
plantations, logging, mining and cattle-raising
1/3 is under jurisdiction of indigenous communities,
mainly between the Putamayo and Caquetá basins
Settlement of Yagua, northeast Peru
144Main
biodiversity
hotspots
145. Atlantic coast of Brazil
A unique rain forest once reaching
from Recife to Florianópolis has been
reduced to less than 5% during the
20th century
NGOs are huge benefactors in Brazil, a
strategy being implemented to
maintain biodiversity is creating
wildlife corridors
The tropical forest, tropical savanna
and mangrove are blessed with high
endemism: 40% of the vascular plants,
60% of the vertebrates are found
nowhere else in the world
Over 11 000 species of plants and
animals are threatened, new species
are continuously being found
145Main
biodiversity
hotspots
146. Atlantic coast of Brazil
In 1990 researchers discovered
a new tamarin, the black-faced
lion tamarin (Leontopithecus
caissara)
In 2006, a new species of blond
capucin (Cebus queirozi), was
discovered in norteastern Brazil
Dwindling Bahia coastal forests
threaten another species namely
the maned sloth (Bradypus
torquatus)
Almost 88% of the original forest
habitat has been lost and is
replaced by pastures, croplands and
urban areas serving a population of
130 million people
Human activity makes the Atlantic
forest more susceptible to fires, to
which it is not accustomed
146Main
biodiversity
hotspots
147. Atlantic coast of Brazil
Maned sloth, endemic to the Bahia coastal forests
Maned sloths are folivores, and feed exclusively on
tree and liana leaves, especially Cecropia sp.
147Main
biodiversity
hotspots
148. Southwestern Ivory Coast
Ivory Coast has the highest level of
biodiversity in West Africa, with over 1200
animal and 4700 plant species
Most of this diversity occurs in the rugged
interior region
Like the rest of West Africa, Ivory Coast
has suffered severe deforestation, with less
than 2% of primary forest remaining in ‘05
Prior to the outbreak of war, 17% of the
country was set aside in protected areas
and measures were taken against illegal
logging, poaching, and settler encroachment
Zebra duiker (Cephalophus zebra),
Population estimated at 28 000, ‘99
Common chimpanzee (Pan troglodytes)
Population ± 50 000 Nigeria to Guinea
148Main
biodiversity
hotspots
149. Southwestern Ivory Coast
Limba, Afara or Korina (Terminalia
superba), emergent tree in mature
tropical forest, deciduous during a short
dry period
The bark is used by the Kroumen for
the treatment of malaria
Taï National Park (4 520 km2) is Ivory
Coast’s last tropical evergreen forest
once roaming 160 000 km2 and a
natural reservoir of Ebola
The traditional knowledge of indigenous
communities (Bakoué, Kroumen) is an
attic of genetic potential not yet
explored by natural science and
medicine
149Main
biodiversity
hotspots
150. Fynbos, South Africa
Fynbos is the smallest but
richest per area unit of the
world’s six floral kingdoms
Known for its exceptional
degree of biodiversity, 8 600
plant species can be found of
which 6 200 are endemic
The flora is composed of
evergreen sclerophyllous plants
including Ericaceae, Proteaceae
and Restionaceae
30% of plants in the Fynbos
produce seeds with an
elaiosome which attract ants
carrying the seeds into their
burrows and protecting them
from common fires
150
Namaqua rock rat (Aethomys
namaquensis) pollinating patentleaf
sugarbush (Protea humiflora)
Southern double-collared sunbird
(Cinnyris chalybeus), Kniphofia
uvariaMain
biodiversity
hotspots
151. Fynbos, South Africa
Threats to the 71 000 km2 fynbos are the
spread of alien species e.g. Acacia sp.,
agriculture and global warming
A 51% to 65% loss of the area extent of
the fynbos is predicted, depending on the
climate scenario used
Fynbos cannot support herds of large
mammals since the nutrient poor soils on
which it grows do not provide enough
nitrogen for the protein that large
mammals require
Smaller mammals common to fynbos are
chacma baboons (Papio ursinis),
supporting diversity by seed dispersal, and
dassies (Procavia capensis)
Mountain pride (Aeropetes tulbaghia)
passionate for red visits Disa uniflora
151Main
biodiversity
hotspots
152. Fynbos, South Africa
Chacma baboons (Wildcliff Nature Reserve) utilize
visual signals - such as staring as threat behaviour,
canine tooth display and lip smacking -, gestures,
vocalizations and tactile communication
152
Main
biodiversity
hotspots
153. Sri Lanka
The forest cover has been reduced to slightly less than 10% of its
original area, much of the primary forest is being limited to a 56 km2
tract within the Sinhajara Forest
Sri Lankan elephants (Elephas maximus maximus), - population
2 000 - and Sri Lankan leopards (Panthera pardus kotiya), both listed
as Endangered by IUCN, once enjoyed a distribution from sea level to
the highest mountain ranges
153Main
biodiversity
hotspots
154. Sri Lanka
The Sinharaja Forest, a 112 km2
remnant of primary forest has been
designated as Biosphere Reserve and
World Heritage Site (1989)
Of Sri Lanka's 26 endemic birds, the
20 rain forest species all occur here,
e.g. the elusive red-faced malkoha
(Phaenicophaeus pyrrhocephalus),
Cuculidae (VU, IUCN ‘07)
Unusual among agamid lizards, the
rarely observed whistling lizard
(Calotes liolepis) utters a high-pitched
whistle when alarmed
The endemic Shorea trapezifolia,
Critically Endangered (IUCN 2011), is
one of most dominant canopy trees in
the protected area at Sinharaja
154Main
biodiversity
hotspots
155. Sri Lanka
As many Dipterocarpaceae, Shorea trapezifolia is a large forest
emergent species, found in fragments of lowland and sometimes
highland wet evergreen forest, usually on deep soils
Most of the habitat has been converted into plantations
Sri Lanka has a diversity of 257 endemic dipterocarps
155Main
biodiversity
hotspots
156. Peninsular Malaysia
The Peninsular Malaysian Rain Forests
ecoregion is the biggest in the Indo-
Pacific, behind the Borneo Lowland Rain
Forests
These majestic forests are dominated
by dipterocarps, with wide-ranging top
carnivores e.g. Malayan tigers (Felis
tigris jacksoni), herbivores e.g.
Sumatran rhinoceros (Didermocerus
sumatrensis),…
Less than 300 Sumatran rhinos and 500
Malayan tigers remain in the wild
Giant honey bees (Apis dorsata), never
domesticated, protect 90m reaching
Tualang trees (Koompassia excelsa)
from loggers, since the value of honey
is greater than that of the timber
156Main
biodiversity
hotspots
157. Peninsular Malaysia
Colony of the giant honey bee, aggressive when
disturbed, in a Tualang tree
These 30 000 bees provide 450 kg honey a year,
granting the tree a taboo against felling
157Main
biodiversity
hotspots
158. Peninsular Malaysia
The Sumatran rhinoceros is the smallest of all rhinos
Around 75 may live in Peninsular Malaysia, the community of Taman
Negara (2 770 km2) being the largest
The Kerinci Seblat National Park, Sumatras largest, was estimated
to contain a population of around 500 rhinos in the 80s, but due to
poaching this population is now considered extinct
Production of palm oil is the chief cause of logging lowland forests
158Main
biodiversity
hotspots
159. Peninsular Malaysia
The sun beer (Ursus malayanus), generally nocturnal, but also seen
during the day is the smallest of the eight living bear species
Its fondness for honey gives rise to its alternative name ‘honey bear’
Much of the sun bear's food must be detected using its keen sense of
smell, as its sight is poor
VU IUCN ’07, poached for their bile used in Chinese medicine
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160. Borneo
The world’s oldest rain forest in
northwestern Borneo is under constant
threat from unsustainable logging
practices
The seven ecoregions have a diversity
of about 15 000 plant species and are
an important refuge for many endemic
species as Orangutans (Pongo sp.)
eating fruits in dipterocarp trees, the
Sunda clouded leopard (Neofelis
diardi), the rare bay cat (Pardofelis
badia – IUCN ‘11 EN), Elephas
maximus borneensis,…
Trees comprise 267 species of
dipterocarps, holding the greatest
insect diversity on Borneo - as many as
1 000 species have been found in just
one tree 160Main
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161. Borneo
A projection towards 2020 reveals
that 2/3 of the pristine forests
which inspired famous scientists as
Wallace will be under constant
threat from palm oil plantations and
tropical timber acquisition
The rain forest was greatly
destroyed from the fires of 1997 to
1998, which were started by the
locals to clear the forests for crops
and perpetuated by an exceptionally
dry El Niño season during that
period
Borneo pygmy elephant (Elephas
maximus borneensis)
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162. Borneo
Thick smoke covering southern Borneo in ‘09, image Nasa Terra
The destruction of rain forest and peatlands during the 1997-1998
El Niño released more than 2 billion tons of CO2 in the atmosphere
In ‘09 Indonesia revealed plans to convert millions of hectares of
peatland across Kalimantan, Sumatra and Papua, despite warnings
from environmentalists 162Main
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163. The Philippines
The Philippine Biodiversity Expedition 2011 studied Luzon island for
42 days and discovered 300 new species in reefs and tropical forests
2 517 out of 8 613 species assessed by IUCN and 17 291 species in
Southeast Asia alone, are on the edge of extinction if no action is
taken to combat biodiversity loss
Fragmented into 7 100 islands in a pattern that promotes speciation,
the Philippines have evolved an immense endemic flora and fauna
The tamaraw (Bubalus mindorensis) IUCN ‘11 Critically Endangered
‘We are at the center of biodiversity loss’ ACB (ASEAN Center for
Biodiversity) Executive Director Rodrigo Fuentes 2010 163Main
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164. The Philippines
In the past 50 years, 2/3 of the forest has been cleared, including all
but 8 000 km2 of the original lowland cover
Rafflesia lobata, belonging to the genus of which the dramatic
flowers are the largest single flowers in the world (Ø = 20 - 90 cm),
can be found in the country's mountainous regions
Rafflesia is a parasite, host plants are vines of Tetrastigma spp.
Discovered in the Central Panay mountain range in ‘06, Rafflesia
lobata is inherently rare because of a double habitat specialization
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165. The Philippines
Philippine flying lemur (Cynocephalus volans), is one
of two species of flying lemurs
The membrane between tail and forelimbs helps this
arboreal lemur to glide distances of 100 meters or more
Despite the destruction of lowland forests and hunting,
IUCN downlisted it to Least Concern in 2008
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166. The Philippines
The primary prey for the Philippine eagles (Pithecophaga jefferyi)
are monkeys, birds, flying foxes and Philippine flying lemurs
In 2010, the IUCN listed this species as Critically Endangered, less
than 500 birds survive in the Philippines, exposure to pesticides
that affect breeding being a major threat
In recent years protected lands have been established specifically for
this species 166Main
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hotspots
167. New Caledonia
Tropical melting pot of species, e.g. the kagu (Rhynochetos jubatus),
endemic to forests and shrubland of New Caledonia
Introduction of dogs, … reduced the population of this flightless bird to
less than 1 000 in 2009
New Caledonia lacked mammals prior to the arrival of humans, except
for Chiroptera (bats)
The loss of much of New Caledonia's native forests and the settlement
of Europeans who brought with them cats, dogs, rats and pigs are the
two major causes of decline 167Main
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168. New Caledonia
Cyathea intermedia in habitat, the tallest endemic fern-tree in
New Caledonia
The forests of New Caledonia hold 1 575 species of plants, of which
an astonishing 89 % are endemic
The ecoregion covers an area of 14 600 km2
Less than 1 500 km2 or 9% of undisturbed forests survive
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169. New Caledonia
The coral reef araucaria (Araucaria columnaris) is an
endemic conifer, showing maximum growth and abundance in
its native habitat at the edge of the sea, forming dense
populations on cliffs and reefs exposed to the prevailing wind
169Main
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170. New Caledonia
The gargoyle gecko (Rhacodactylus
auriculatus), appraised as a pet, is a
nocturnal and mainly arboreal animal with
long limbs and toes with well-developed
lamellae, assisting in climbing
Gargoyle geckos are considered medium
to large sized geckos reaching an average
size of 40 cm
The goliath imperial pigeon (Ducula
goliath), another colorful inhabitant
dwelling in the undisturbed New
Caledonian rain forests, is one of the
many endemic pigeons and also the
largest – see next slide
IUCN 2008 Near Threatened owing to
increased hunting
170Main
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171. New Caledonia
171
The goliath imperial pigeon hunted as a game
bird by most of the tribes during traditional feasts
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172. Southwestern Australia
The Nullarbor Plains xeric shrubland is one of the ecoregions where
WWF pursues ecoregion conservation, a broad-scale approach to
implement a comprehensive strategy conserving species, habitats and
ecological processes
It is the world's largest single piece of limestone (200 000 km2),
characterized by a flora of e.g. marble gum (Eucaluptus gongylocarpa)
in the north, western myall (Acacia papyrocarpa) and saltbush
(Atriplex sp.) in the south
Woma python (Aspidites ramsayi), classified as Endangered (IUCN
2011), found in northern South Australia 172Main
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173. Southwestern Australia
Marble Gum with Spinifex grasses as the understory
Frequent wildfires, mining operations, feral predators and herbivores
and widespread expansion of the Mediterranean Ward’s weed
(Carrichtera annua) after an accidental introduction have substantially
modified habitats over extensive areas of both subregions and caused
numerous extinctions of indigenous mammals
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174. Southwestern Australia
Male southern hairy-nosed
wombats (Lasiorhinus latifrons) mark
their grazing area and warren refuges
with scent secretions
Rabbits compete with wombats for
forage, stimulating annual grass
species becoming the dominant
species, which are insufficient for the
wombat’s metabolic needs
On the Nullarbor Plain it is abundant,
but drought may affect the young in
this harsh environment
The largest population lives nearby
hole n°4 of the Nullarbor Links,
world's longest golf course
174Main
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175. The Mediterranean Basin
The sclerophyllus shrublands, stretching west to east from Portugal to
Jordan and north to south from Italy to Morocco, support 22 500
endemic plant species, 4 times the number found elsewhere in Europe
Being a tourist destination, populations of threatened species are
increasingly fragmented; hardly 100 000 km2 of vegetation out of
2 000 000 km2 hotspot extent is untouched
The largest population of the Iberian lynx (Lynx pardinus) is
estimated at 60 to 110 adults in the Sierra Morena
175Main
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176. The Mediterranean Basin
Distribution Lynx pardinus, 1990 and
2003
The Iberian lynx prefers environments of
open grassland with juniper (Juniperus sp.),
mastic (Pistacia lentiscus) and relict
populations of strawberry trees (Arbutus
unedo)
Its habitat loss is due mainly to infrastructure
improvement, urban and resort development
and tree monoculture (Pinus sp., Eucalyptus
sp., Pseudotsuga sp.)
In addition, the lynx’s prey population of
rabbits is declining due to diseases such as
myxomatosis and hemorrhagic pneumonia
If the Iberian lynx were to become extinct, it
would be the first big cat species to do so
since Smilodon populator 10 000 years ago
176Main
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177. The Mediterranean Basin
Strawberry trees have a preference for lime soils
Widespread in the Mediterranean region, image: Jordan
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178. Survey of the most important
biodiversity hotspots
These vulnerable ecosystems of great value have lost at least 70% of
their primary vegetation
This, and containing at least 0.5% or 1 500 species of endemic
vascular plants, is next to one of the criteria also a topic of critique
On the other hand, regions that are relatively intact (e.g. the Amazon
Basin) have experienced relatively little land loss, but are currently
losing habitat at a tremendous rate 178Main
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179. The list is not closed…
The rain forests of Mexico, Central America, the Caribbean, Liberia,
Queensland, Hawaii, the Great Lakes of East Africa, lake Baikal and
virtually every drainage system in the world near heavily populated
regions (Ganges, Tennessee, Amazone,…) can be added to this list
The keel-billed toucan (Ramphastos sulfuratus), Belize’s national
bird, uses holes that woodpeckers have made and tree hollows in
tropical forests from South-Mexico to Venezuela
In ’98 -a strong el Niño year- fires destroyed over 1,5 million acres,
while every year in Mexico close to a million acres of rain forests
disappear for fuel wood collection, agriculture and Chiapas conflicts
179
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180. The list is not closed…
The Xingu River will be forever changed by the
construction of a monster dam, the Belo Monte
Up to 80% of the Xingu River will be diverted
from its original course, causing a permanent
drought on the river's 100 kilometer long ‘Big
Bend’ if the scenario is not reviewed
The area either dried out or drowned by the
dam spans the entire known world distribution
of a number of species e.g. the plant-eating
piranha (Ossubtus xinguense) and the Xingu
poison dart frog (Allobates crombiei)
During its first 10 years, the Belo Monte-dam
complex would emit 11,2 million metric tons of
CO2 and surplus amounts of CH4, due to
decomposing vegetation and anaerobic decay
The project will trigger an increase in
population, uncontrolled land occupation, illegal
logging and cattle ranching 180Main
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181. The list is not closed…
Kayapó warriors performing a traditional fishing practice
During the 6-month-long low-waterseason on the Xingu, the costly
dam would generate as little as 1 000 MW of electricity
In all probability, the rain forests in this region would not survive, 400
km2 will be flooded and ± 50 000 people would be forcibly displaced
181Main
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182. The list is not closed
The dams would flood 14 000
acres, disfiguring the otter’s
and the South Huemul deer’s
(Hippocamelus bisulcus) habitat
Fewer than 1 000 of the
diminutive animals are believed
to exist, IUCN ‘11 Endangered
In Chilean Patagonia, the construction
of dams on the Pascua River and on
the Baker River would flood rare forest
ecosystems and some of the most
productive agricultural land in the area
More than 2 000 km of transmission
lines would require one of the world's
longest clear-cuts through untouched
temperate rain forests
Supporters say the economic benefits
of the dam project justify carving
roads through the heart of Chile's
remaining wilderness
Investment in more efficient use of
electricity, together with renewable
sources such as solar, geothermal and
wind, would ensure a sustainable
energy future for Chile 182Main
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hotspots
183. Lake Baikal
Lake Baikal is the world’s oldest lake, containing roughly 20% of
the world's unfrozen surface fresh water
Lake Baikal, at least 25 million years old, was formed as an
ancient rift valley, displaying the typical elongated crescent shape
Phoca sibirica or Nerpa, the only exclusively freshwater pinniped
species, arrived at Lake Baikal when a sea-passage linked the
lake with the Arctic Ocean
Excessive hunting for its pelt, as well as poaching and pollution,
may be reducing the population
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