Effects of landscape complexity on farmland birds in the Baltic States |
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| Institution: | 1. Department of Applied Biology, P.O. Box 27 (Latakartanonkaari 5), University of Helsinki, FIN-00014, Finland;2. Department of Mathematics and Statistics, P.O. Box 4 (Yliopistonkatu 5), University of Helsinki, FIN-00014, Finland;1. Observatoire des Sciences de l’Univers de Rennes, UMR CNRS 6553 ECOBIO, Université de Rennes 1-UEB, Avenue du général Leclerc, Rennes Cedex 35042, France;2. CEMFOR – CTFC, InForest Joint Research Unit, Solsona 25280, Spain;3. CREAF, Cerdanyola del Vallés 08193, Spain;4. CSIC, Cerdanyola del Vallés 08193, Spain;1. Centre for the Humanities, Hungarian Academy of Sciences, Országház u. 30., 1014 Budapest, Hungary;2. Centre for Ecology, Hungarian Academy of Sciences, Alkotmány u. 2-4., 2063 Vácrátót, Hungary;1. School of Environmental Sciences, Szent István University, Páter Károly u. 1, H-2100 Gödöll?, Hungary;2. MTA ÖK Lendület Ecosystem Services Research Group, Alkotmány u. 2-4, H-2163 Vácrátót, Hungary;3. Institute of Ecology and Botany, MTA Centre for Ecological Research, Alkotmány u. 2-4, H-2163 Vácrátót, Hungary;4. Department of Forest Protection, Forest Research Institute, Hegyalja u. 18, H-3232 Mátrafüred, Hungary;5. Department of Plant Systematics, Ecology and Theoretical Biology, Loránd Eötvös University, Pázmány Péter sétány 1/C, H-1117 Budapest, Hungary;1. Ecology Department, University of Szeged, H-6726, Közép fasor 52, Szeged, Hungary;2. BirdLife Hungary, Költö u. 21, 1121 Budapest, Hungary;3. MTA-DE Biodiversity and Ecosystem Services Research Group, Egyetem tér 1, 4032 Debrecen, Hungary;4. MTA-ELTE-MTM Ecology Research Group, Hungarian Academy of Sciences, c/o Biological Institute, Eötvös Lóránd University, Pázmány Péter sétány 1/C, H-1117 Budapest, Hungary and Hungarian Natural History Museum, Baross u. 13, H-1088 Budapest, Hungary;1. Swedish University of Agricultural Sciences, Swedish Biodiversity Centre, Box 7007, SE 750 07 Uppsala, Sweden;2. Swedish University of Agricultural Sciences, Department of Ecology, Box 7044, SE 750 07 Uppsala, Sweden |
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| Abstract: | Data on birds occurring in farmland in the Baltic States of Estonia, Latvia and Lithuania were related to the spatial organisation of farmed habitats in three different agricultural landscape types. Species richness, abundance, and diversity of farmland bird communities, as well as abundance of the most frequently observed species were positively related to the number of residual non-cropped elements within farmland, the local mixture of annual crop and grass fields, and the variety of field types. The positive association of the species richness and abundance of the farmland bird community with richness in residual habitats and crops was most prominent in open landscapes. The results suggest that, by simplifying farmland structure and making it more homogenous, EU agricultural policies will have a detrimental effect on farmland bird populations in Eastern Europe. Ways of better targeting of the agri-environment schemes are suggested. |
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