Connectivity compensates for low habitat quality and small patch size in the butterfly Cupido minimus

Birgit Binzenhöfer, Robert Biedermann, Josef Settele, Boris Schröder

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

25 Zitate (Scopus)

Abstract

Habitat size, habitat isolation and habitat quality are regarded as the main determinants of butterfly occurrence in fragmented landscapes. To analyze the relationship between the occurrence of the butterfly Cupido minimus and these factors, patch occupancy of the immature stages in patches of its host plant Anthyllis vulneraria was studied in the nature reserve Hohe Wann in Bavaria (Germany). In 2001 and 2002, 82 A. vulneraria patches were surveyed for the presence of C. minimus larvae. The occurrence was largely affected by the size of the food plant patches. In a habitat model that uses multiple logistic regression, the type of management and habitat connectivity are further determinants of species distribution. Internal and temporal validation demonstrate the stability and robustness of the developed habitat models. Additionally, it was proved that the colonization rate of C. minimus was significantly influenced by the distance to the next occupied Anthyllis patch. Concerning long-term survival of (meta-) populations in fragmented landscapes, the results show that lower habitat quality may be compensated by higher connectivity between host plant patches.

OriginalspracheEnglisch
Seiten (von - bis)259-269
Seitenumfang11
FachzeitschriftEcological Research
Jahrgang23
Ausgabenummer2
DOIs
PublikationsstatusVeröffentlicht - März 2008
Extern publiziertJa

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