Distribution patterns of four Orthoptera species in relation to microhabitat heterogeneity in an ecotonal area |
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| Institution: | 1. Division of Neurosurgery, Department of Surgery, Royal University Hospital, Saskatoon, Saskatchewan, Canada;2. Department of Medical Imaging, Royal University Hospital, Saskatoon, Saskatchewan, Canada;3. College of Kinesiology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada;4. Department of Psychology, University of Saskatchewan, Saskatoon, Saskatchewan, Canada;1. College of Life Science, Northeast Agricultural University, Harbin 150030, China;2. Soil, Water and Environment Research Institute, Agricultural Research Center, Giza, Egypt;1. Biological Sciences, School of Science, University of Waikato, Private Bag 3105, Hamilton, New Zealand;2. Manaaki Whenua - Landcare Research, Private Bag 3127, Waikato Mail Centre, Hamilton 3240, New Zealand;3. Mathematics and Statistics Department, University of Waikato, Private Bage 3105, Hamilton, New Zealand;1. IFM Biology, Conservation Ecology Group, Linköping University, SE-581 83 Linköping, Sweden;2. Department of Crop Production Ecology, Swedish University of Agricultural Sciences, Box 7043, SE-750 07 Uppsala, Sweden;1. Department of Animal and Plant Sciences, University of Sheffield, Western Bank, Sheffield, S10 2TN, UK;2. Centre for Tropical Environmental and Sustainability Science (TESS) and School of Marine and Tropical Biology, James Cook University, Cairns, Smithfield, QLD 4878, Australia;3. Edward Grey Institute, Department of Zoology, Oxford University, OX1 3PS, UK;4. Department of Ecology and Natural Resource Management, Norwegian University of Life Sciences, NO-1432 Ås, Norway;5. School of Environment, Science and Engineering, Southern Cross University, Lismore, NSW, Australia;6. Center for International Forestry Research, Bogor, Indonesia;7. People and Nature Consulting International, Jakarta, Indonesia;8. Australian research Council (ARC) Centre of Excellence for Environmental Decisions, Centre for Biodiversity and Conservation Science, University of Queensland, Brisbane, Australia |
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| Abstract: | Microhabitat heterogeneity is considered to be one of the main factors affecting the structure and diversity of natural communities. This study evaluated: (i) whether it is possible to associate the distribution of four orthopteran species with small-scale spatial microhabitat heterogeneity based on floristic composition; and (ii) whether interspecific differences exist in microhabitat was among the different orthopteran species over a gradient of vegetation succession induced by abandonment of meadows. Orthoptera and plant species were sampled on 72 plots across an ecotonal area on Monte Bondone in the Southern Italian Alps. Microhabitats were identified based on grassland and undergrowth vegetation composition and by classifying sample plots using cluster analysis. Eight microhabitats were identified, each corresponding to a separate successional stage, and microhabitat use by each species was assessed. The distribution of orthopteran species revealed a different use of microhabitats. Species also had differing patterns of distribution, and a shift in distribution occurred following a change in microhabitat structure caused by mowing. The importance of the maintenance of a mosaic of microhabitats, with differently managed adjacent areas is discussed. |
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