Habitat Loss and Fragmentation
Habitat Loss and Fragmentation
This chapter discusses habitat loss and fragmentation on the Åland Islands in the Baltic Sea. It first provides a background on the Glanville fritillary research project and how it has evolved into a model system for metapopulation biology before discussing the impact of infectious diseases on the dynamics of butterflies and other animals and plants in fragmented landscapes such as Åland. In particular, he considers the concept and theory of the extinction threshold at the landscape level by drawing on evidence from the Glanville fritillary study. The chapter also comments on the debates about habitat fragmentation and its consequences for biodiversity, including that of forest-inhabiting species, and concludes with an analysis of the so-called third-of-third rule in habitat conservation.
Keywords: habitat loss, Åland Islands, infectious diseases, butterflies, fragmented landscapes, extinction threshold, habitat fragmentation, biodiversity, third-of-third rule, habitat conservation
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