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Comparison of trends in butterfly populations between monitoring schemes |
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| Authors: | D B Roy E F Ploquin Z Randle K Risely M S Botham I Middlebrook D Noble K Cruickshanks S N Freeman T M Brereton |
| Institution: | 1. NERC Centre for Ecology and Hydrology, Wallingford, UK 2. Butterfly Conservation, Wareham, UK 3. British Trust for Ornithology, Thetford, UK 4. Footprint Ecology, Wareham, UK |
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