Urbanization effects on Isopods in Denmark and Hungary

Abundance patterns of isopod assemblages under different urbanization stages in Hungary and Denmark Ferenc V ilisics 1 , E. Hornung 1 , Z. Elek 1,2 , G.L. Lövei 3 , T. Magura 4 & B. Tóthmérész 5 1 Szent István University (H); 2 CEMAGREF (F); 3 Aarhus University (DK); 4 Hortobágyi National Park (H); 5 Debrecen University (H)

Johannesburg, ZA Sao Paulo, BRA Kansas City, USA Kobe, JPN Key problem: Urbanization

[object Object],e.g. McKinney, ML (2006) Biol Cons FUNCTION industry, trade, education, culture etc. LAND MANAGEMENT habitat degradation, artificial surfaces, etc. STRUCTURE e.g. residential, industrial, commercial zones ENVIRONMENT e.g. heat island effect

Niemelä (1999) Urban Ecosyst ,[object Object],C I T I E S Densely built-in city core Suburban zone Rural area; woods

[object Object],[object Object],[object Object],[object Object],URBAN SOIL FAUNA Vilisics & Hornung (2009) Urban Ecosyst Szlávecz et al. 2008 URBIO Erfurt abstract Species introduction Biotic homogenization ,[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],METHODS

R U R A L ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],SUBURBAN U R B A N METHODS

[object Object],[object Object],[object Object],[object Object],LOCALITIES

Oak forest Suburban area Urban park ,[object Object]

Beech forest Suburb an area Urban park ,[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],HYPOTHESES

RESULTS ,[object Object],[object Object],[object Object],[object Object],Porcellio scaber

Sor ø : Armadillidium vulgare Porcellio scaber Trachelipus rathkii Ligidium hypnorum Oniscus asellus Philoscia muscorum ,[object Object],[object Object],[object Object],[object Object],[object Object],RESULTS Debrecen: Armadillidium vulgare Porcellio scaber Trachelipus rathkii Trachelipus ratzeburgii Porcellium collicola Cylisticus convexus

INDIVIDUALS / TRAP Egipigeic activity Debrecen , 2002 Sorø , 2004 Kruskal-Wallis test, p<0,01 Sorø (DK) Debrecen (H) No. of individuals/trap (+-SD) Rural Suburban Urban Rural Suburban Urban

ABUNDANCE OF SITES AND AREAS Nested ANOVA R = Rural , S = Suburb a n, U = Urb a n *<0,1 **<0,05 ***<0,001 ,[object Object],[object Object],[object Object], Df. F p Fisher LSD Debrecen Area 2 0,69 * R = S S < U R < U Site ( Within area ) 9 4,43 ** Sorø Area 2 8,63 *** R < S R < U R < U Site ( Within area ) 9 4,98 **

SIMILARITY OF SITES AND AREAS C l u ster anal ysi s, Bray-Curtis, Ward m ethod Sorø (DK) Rural Suburban Urban Debrecen (H)

Rural Suburban Urban Debrecen Sor ø SPECIES FREQUENCY IN AREAS Epigeic activity Epigeic activity Rural Suburban Urban

RANK-ABUNDANCE OF ASSEMBLAGES Rural Suburban Urban Debrecen Sorø

SUMMARY For both towns: 1. Species richness: no differences among areas rural, suburban, urban. 2. No introduced, exotic species captured by pitfall traps. 3. The differences among areas were indicated by abundance patterns of species. 4. Rank-abundance of assemblages show unevenness regardless to level of urbanization.

ACKNOWLEDGEMENTS We thank to all of those colleagues who helped in the field and the lab in Debrecen and Sorø. Grants: - Akademi Stilftelse & the Danish Institute for Agricultural Sciences - Hungarian National Research Fund (OTKA T 043508) - International School of Biodiversity Studies (ISOBIS) (Z. Elek) - Hungarian Scholarship Board (HSB, E ö tv ö s-grant, Z. Elek).

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],TERRESTRIAL ISOPODS (Crustacea, Isopoda, Oniscidea) Meinertz, T (1964) Vidensk Medd dansk Schmalfuss, H (2003) Stuttg Beitr Naturk Vilisics, F (2007) Folia Nat Hist Mus Matr ,[object Object],[object Object]

Urbanization effects on Isopods in Denmark and Hungary

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