Body size inequality of carabids along an urbanisation gradient

T. Magura, B. Tóthmérész, Gábor L. Lövei

Research output: Contribution to journalArticle

57 Citations (Scopus)

Abstract

Analysis of size inequality can shed light on coexistence mechanisms and help to interpret patterns in assemblages. We tested several measures for their power to evaluate changes in carabid body size along an urbanisation gradient (city park-suburban area-rural), representing decreasing intensities of human disturbance. Carabids were collected by pitfall traps over two full activity periods in lowland oak forest patches in and near the city of Debrecen, Eastern Hungary. The average value of skewness was largest in the urban areas compared to the suburban and rural ones, indicating that small individuals were more prominent in the urban areas. The Gini coefficient also decreased from urban towards rural areas, suggesting that inequality in body size of the carabid assemblages decreased along the gradient. However, neither of these trends was significant. The Lorenz asymmetry coefficient was significantly higher in rural areas compared to suburban and urban areas indicating that there was a significant difference in inequality and/or asymmetry of body size across the gradient. This difference was primarily due to more individuals with larger body size in rural area. We suggest that the observed variation in carabid body size along the gradient is related to habitat alteration caused by urbanisation.

Original languageEnglish
Pages (from-to)472-482
Number of pages11
JournalBasic and Applied Ecology
Volume7
Issue number5
DOIs
Publication statusPublished - Sep 1 2006

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urbanization
body size
rural areas
urban areas
suburban areas
rural area
urban area
suburban area
asymmetry
pitfall trap
pitfall traps
skewness
Hungary
coexistence
lowlands
Quercus
disturbance
habitat
habitats
city

Keywords

  • Disturbance
  • Gini coefficient
  • Globenet project
  • Ground beetles
  • Lorenz asymmetry coefficient
  • Skewness

ASJC Scopus subject areas

  • Ecology

Cite this

Body size inequality of carabids along an urbanisation gradient. / Magura, T.; Tóthmérész, B.; Lövei, Gábor L.

In: Basic and Applied Ecology, Vol. 7, No. 5, 01.09.2006, p. 472-482.

Research output: Contribution to journalArticle

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