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Vertebrate Conservation and Biodiversity

  • Book
  • © 2007

Overview

  • Draws together a wide range of peer-reviewed primary research papers from biodiversity researchers around the world
  • Provides examples from a wide spectrum of issues representing the current state-of-the art in arthropods
  • Provides examples of recent work, usable as case studies for courses in ecology, restoration, biodiversity, conservation
  • Enables specialist researchers to see primary research papers tackling problems in arthropods

Part of the book series: Topics in Biodiversity and Conservation (TOBC, volume 5)

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Table of contents (31 chapters)

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About this book

The structure and function of grasslands worldwide have been disrupted by habitat fragmentation, the removal of native grazers and altered ?re frequency (Samson and Knopf 1994). Such changes threaten the integrity of native grassland communities of plants and animals in many ways and at many levels (Janzen 1983; Collins 2000; Cully and Michaels 2000). Habitat fragmentation alters size, spacing and context of habitat patches, which can result in an increase in the local rate of extinction of plant and animal species by reducing fecundity, population size and colonization of species from similar habitats (Noss and Csuti 1992). Compounding the effects of fragm- tation, extirpation of ?re and loss of populations of native grazers can lead to encroachment of woody vegetation and loss of grassland (Leach and Givnish 1996; Collins et al. 1998). In addition to effects on plant communities, the use of prescribed ?re to enhance grasslands is of increasing relevance as regional losses, isolation and fragmentation of grasslands have led to corresponding declines in local population densities of many species of grassland-dependent birds (Askins 1993; Vickery et al. 1994). Ar- sensitive species in grasslands are especially vulnerable to these effects (Herkert 1994a, b) which can create speci?c physical, environmental and ecological changes (Yahner 1988) that lower habitat quality for area-sensitive species that have been historical specialists of grassland habitats.

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