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Messages from IslandsA Global Biodiversity Tour$
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Ilkka Hanski

Print publication date: 2016

Print ISBN-13: 9780226406305

Published to Chicago Scholarship Online: September 2017

DOI: 10.7208/chicago/9780226406589.001.0001

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PRINTED FROM CHICAGO SCHOLARSHIP ONLINE (www.chicago.universitypressscholarship.com). (c) Copyright University of Chicago Press, 2021. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in CHSO for personal use.date: 24 September 2021

Habitat Loss and Fragmentation

Habitat Loss and Fragmentation

Chapter:
(p.146) 5 Habitat Loss and Fragmentation (p.147)
Source:
Messages from Islands
Author(s):

Ilkka Hanski

Publisher:
University of Chicago Press
DOI:10.7208/chicago/9780226406589.003.0005

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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