A brief introduction to kelp farming.

1. INTRO TO SEAWEEDS
Dr Sara Barrento
Picture by Dr Sara Barrento, Lombok

2. Large algae growing in
the sea or on rocks below
the high-water mark.

3. seaweed
farming

4. 4
14,000 year ago
in Southern Chile
When?
a long time ago
Seaweed
production

5. 5
What for?
Seaweed
production
Food
Fertilizers
Insulation
Medicine
Fodder

6. 6
​ Human consumption145
​Seaweed species numbers and its uses
​ Hydrocolloid production101
​ Farmed species34

7. 7
Laverbread Sushi Seasoning
Toothpaste Cosmetics Feed ingredient
Dairy food
Crisps
Icre cream Yogurt
Cheese Soups

8. 8
Laverbread Sushi Seasoning
Toothpaste Cosmetics Feed ingredient
Dairy food
Crisps
Icre cream Yogurt
Cheese Soups
Direct consumption with minimal processing
Seaweed producs/extracts

9. 9
Long chain polymers
(polysaccharides and proteins) can
form viscous dispersions and/or gels
when dispersed in water.
​ Hydrocolloid production
​ Agar
​ Alginate
​κ-Carrageenan &
ί- carrageenan
Red algae
Brown algae

10. 10
Seaweed production million tons (Mt)
1997
2014 24 Mt
7 Mt 96% of total world
production is farmed
Seaweed production
Harvesting or farming?

11. Farming of seaweeds
surpassed wild harvest in
tonnage about 40 years ago
East
FARMING

12. 12
Picture by Dr Sara Barrento, Nusa Lembongan

13. 13
Picture by Dr Sara Barrento, Nusa Lembongan

14. Farming of seaweeds
surpassed wild harvest in
tonnage about 40 years ago
East West
FARMING HARVESTING

15. East West
FARMING HARVESTINGCATCH UP
The drivers:
Biofuels
IMTA

16. 16
​Kelp farming in the West and in the UK
All kelps have a
heteromorphic life cycle, i.e.
2 part life cycle:
2. a microscopic stage
the gametophyte phase
1. a large visible stage
the sporophyte phase

17. 17
Picture by Dr Sara Barrento

18. 18
Picture by Dr Sara Barrento
Sorus

19. 19
In the lab:
induce
spore
release
light
temperature
nutrients
aeration

20. 20

21. 21
Picture by Dr Sara Barrento

22. 22
Picture by Dr Sara Barrento

23. 23

24. 24
Picture by Dr Sara Barrento

25. 25
Picture by Dr Sara Barrento