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Quantifying changes in abundance of food plants for butterfly larvae and farmland birds |
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| Authors: | S. M. Smart L. G. Firbank R. G. H. Bunce J. W. Watkins |
| Affiliation: | Institute of Terrestrial Ecology, Merlewood Research Station, Grange-over-Sands, Cumbria LA11 6JU, UK |
| Abstract: | |
| Keywords: | agro-ecosystems conservation countryside survey herbivory |