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The relationship between local extinctions of grassland butterflies and increased soil nitrogen levels

E. Ockinger, Auteur ; O. Hammarstedt, Auteur ; S. G. Nilsson, Auteur ; H. G. Smith, Auteur

Dans Biological Conservation (128(4) APR 2006)

In contrast to many other western European countries, the knowledge about trends in the Swedish butter-fly fauna is poor. We studied the effects of habitat and species characteristics on species turnover in 13 grassland sites in southern Sweden [...]

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