Journal of Insect Conservation

, Volume 16, Issue 6, pp 883–897

Effects of habitat edges and trampling on the distribution of ground beetles (Coleoptera, Carabidae) in urban forests

  • D. Johan Kotze
  • Susanna Lehvävirta
  • Matti Koivula
  • Robert B. O’Hara
  • John R. Spence
ORIGINAL PAPER

DOI: 10.1007/s10841-012-9475-2

Cite this article as:
Kotze, D.J., Lehvävirta, S., Koivula, M. et al. J Insect Conserv (2012) 16: 883. doi:10.1007/s10841-012-9475-2

Abstract

Urban forest patches are generally small with highly contrasting edges bordering non-forest habitat, landscape features that increase with urbanisation. These forest patches are also subject to high human foot traffic resulting in trampling and other user disturbances that affect their quality as habitat for invertebrates. We studied the effects of these factors on carabid beetles in urban forests in the cities of Helsinki (Finland) and Edmonton (Canada). In both cities, the structure of carabid assemblages was affected by trampling intensity and distance to the forest edge. Moderate intensity of trail use was associated with increased beetle captures, especially in Edmonton. The effects on individual species were apparent in Edmonton but harder to demonstrate in Helsinki where forest specialist species may have been largely extirpated already. We suggest that these differences result because there has been a long history of fragmentation of urban forest patches in Helsinki, species loss from such patches is gradual, and understorey vegetation structure constrains human foot traffic in forest patches more in Edmonton than it does in Helsinki.

Keywords

City Fragmentation Recreational Urban woodlands Wear 

Supplementary material

10841_2012_9475_MOESM1_ESM.docx (14 kb)
Supplementary material 1 (DOCX 13 kb)
10841_2012_9475_MOESM2_ESM.pdf (151 kb)
Supplementary material 2 (PDF 150 kb)
10841_2012_9475_MOESM3_ESM.pdf (153 kb)
Supplementary material 3 (PDF 153 kb)
10841_2012_9475_MOESM4_ESM.pdf (35 kb)
Supplementary material 4 (PDF 35 kb)
10841_2012_9475_MOESM5_ESM.pdf (31 kb)
Supplementary material 5 (PDF 31 kb)

Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • D. Johan Kotze
    • 1
  • Susanna Lehvävirta
    • 1
    • 2
  • Matti Koivula
    • 3
  • Robert B. O’Hara
    • 4
    • 5
  • John R. Spence
    • 6
  1. 1.Department of Environmental SciencesUniversity of HelsinkiHelsinkiFinland
  2. 2.Botanic Garden, Finnish Museum of Natural HistoryUniversity of HelsinkiHelsinkiFinland
  3. 3.Finnish Forest Research InstituteVantaaFinland
  4. 4.Department of Mathematics and StatisticsUniversity of HelsinkiHelsinkiFinland
  5. 5.Biodiversity and Climate Research CentreFrankfurt am MainGermany
  6. 6.Department of Renewable ResourcesUniversity of AlbertaEdmontonCanada

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