, Volume 31, Issue 1, pp 125–134 | Cite as

Effects of Habitat Size, Vegetation Cover, and Surrounding Land Use on Diptera Diversity in Temperate Nearctic Bogs

  • Jade Savage
  • Terry A. Wheeler
  • Amy M. A. Moores
  • Amélie Grégoire Taillefer


Higher Diptera (Schizophora) are taxonomically and ecologically diverse, and include bog specialist and bog-associated species known to respond to peatland disturbance. We examined the effects of three factors (habitat size, vegetation cover and surrounding land use measured in concentric circles of 500, 1000, 1500, and 2000 m radii from the sampling location) on Schizophora species richness, diversity, and composition in six temperate eastern Nearctic bogs. A total of 381 species of Schizophora were collected with observed species richness among sites ranging from 96 to 182. Assemblages in apparently similar peatlands were highly variable, but characterized by a few highly dominant species, most of which are not peatland specialists. Bog size had no influence on species richness or diversity. Vegetation cover at the sampling sites and surrounding land use at the largest scales measured (1500 and 2000 m) both influenced species assemblages.


Community ecology Disturbance Fragmentation Landscape Peatland Species richness 



We thank Gilbert and Enid Elliot (Ogden, QC), Parc national de Frontenac, Lake Carmi State Park; Andrée Giroux (MDDEP), Ian Worley and Bill Gill (University of Vermont) and Eric Sorenson (Vermont Department of Fish and Wildlife) for information and access to bogs. Gabrielle Gagnon, Peter Kraska and James Kuchta assisted with field work. James O’Hara and Monty Wood (Canadian National Collection of Insects) identified Tachinidae and Marjolaine Giroux (McGill University) identified Sarcophagidae. Rosa Orlandini and Joanna Hobbins (Walter Hitschfeld Geographic Information Centre) advised on GIS analysis. Chris Buddle (McGill University) and Robert van Hulst (Bishop’s University) provided statistical advice and assistance. Financial support was provided by Natural Sciences and Engineering Research Council of Canada (NSERC) grants to JS and TAW, a Fonds québecois de la recherche sur la nature et les technologies (FQRNT) grant to JS and an NSERC Postgraduate Scholarship to AM.

Supplementary material

13157_2010_133_MOESM1_ESM.pdf (992 kb)
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Copyright information

© Society of Wetland Scientists 2011

Authors and Affiliations

  • Jade Savage
    • 1
  • Terry A. Wheeler
    • 2
  • Amy M. A. Moores
    • 2
  • Amélie Grégoire Taillefer
    • 2
  1. 1.Department of Biological SciencesBishop’s UniversitySherbrookeCanada
  2. 2.Department of Natural Resource SciencesMcGill UniversitySte-Anne-de-BellevueCanada

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