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001-es BibID:	BIBFORM016184
Első szerző:	Magura Tibor (ökológus)
Cím:	Does urbanization decrease diversity in ground beetle (Carabidae) assemblages? / Tibor Magura, Gábor L. Lövei, Béla Tóthmérész
Dátum:	2010
Megjegyzések:	Aim We wanted to test whether urbanization has similar effects on biodiversity indifferent locations, comparing the responses of ground beetle (Coleoptera, Carabidae)assemblages with an urbanization gradient.We also wanted to see if urbanizationhad a homogenizing effect on ground beetle assemblages.Locations Nine forested temperate locations in Europe, Canada and Japan.Methods Published results of the Globenet Project were used. At all locations,three stages were identified: (1) a forested (rural) area, (2) a suburban area wherethe original forest was fragmented and isolated, and (3) remnants of the originalforest in urban parks. These habitats formed an urbanization series. Study arrangements(number and operation of traps) and methods (pitfall trapping) were identical,conforming to the Globenet protocol. Assemblage composition and diversitypatterns were evaluated.Diversity relationships were analysed by the Rényi diversityordering method considering all ground beetles and ? separately ? the forest specialistspecies. Taxonomic homogenization was examined by multivariate methodsusing assemblage similarities.Results Overall biodiversity (compared by species richness and diversity ordering)showed inconsistent trends by either urbanization intensity or by geographicposition.However, when only forest species were compared, diversity was higher inthe original rural (forested) areas than in urban forest fragments.Within-countrysimilarities of carabid assemblages were always higher than within-urbanizationstage similarities.Main conclusions Urbanization does not appear to cause a decrease in groundbeetle diversity per se. Forest species decline as urbanization intensifies but thistrend is masked by an influx of non-forest species. The rural faunas were moresimilar to the urban ones within the same location than similar urbanization stageswere to each other, indicating that urbanization did not homogenize the taxonomiccomposition of ground beetle faunas across the studied locations.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban Biotic homogenization disturbance diversity fragmentation Globenet Project scalable diversity comparison urbanization
Megjelenés:	Global Ecology and Biogeography. - 19 : 1 (2010), p. 16-26. -
További szerzők:	Lövei Gábor L. (1954-) (Ökológus) Tóthmérész Béla (1960-) (ökológus)
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat DOI
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