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Amphibian DeclinesThe Conservation Status of United States Species$
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Michael Lannoo

Print publication date: 2005

Print ISBN-13: 9780520235922

Published to California Scholarship Online: March 2012

DOI: 10.1525/california/9780520235922.001.0001

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(p.350) (p.351) Introduction
Amphibian Declines

Michael Lannoo

Alisa L. Gallant

Priya Nanjappa

Laura Blackburn

Russell Hendricks

University of California Press

Worldwide reports of amphibian population declines and malformations prompt concern about species protection. Amphibians occur in nearly all habitats, and they exhibit variations in life history and natural history features that enable them to accommodate a wide range of environmental conditions. This introductory chapter describes a toolbox for managers consisting of species accounts and a new digital database that links each species with geospatially referenced units. The toolbox is designed to map distribution patterns for individual species as well as for groups of species sharing common phylogenetic, life history, ecological, or behavioral traits. An ecoregion framework was employed to interpret these distribution patterns, relying not only on the mapped regional boundaries but also on an understanding of the environmental characteristics that define the ecoregions. The chapter concludes by demonstrating how to use the toolbox with an example of an application focused on conservation.

Keywords:   amphibians, population declines, conservation, life history, natural history, species accounts, distribution, ecoregions

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