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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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PRINTED FROM CALIFORNIA SCHOLARSHIP ONLINE (www.california.universitypressscholarship.com). (c) Copyright University of California Press, 2019. All Rights Reserved. An individual user may print out a PDF of a single chapter of a monograph in CALSO for personal use.date: 16 October 2019

Ultraviolet Radiation

Ultraviolet Radiation

Chapter:
(p.87) Fourteen Ultraviolet Radiation
Source:
Amphibian Declines
Author(s):

Andrew R. Blaustein

Lisa K. Belden

Publisher:
University of California Press
DOI:10.1525/california/9780520235922.003.0014

Global climate changes, including changes in atmospheric conditions, may be contributing to amphibian population declines. Studies of amphibians and ultraviolet radiation have concentrated on ultraviolet B (UV-B), the portion of the spectrum of most biological concern at the earth's surface. Higher wavelengths are less efficiently absorbed by critical biomolecules; lower wavelengths are absorbed by stratospheric ozone. UV-B radiation is known to induce the formation of photoproducts that can cause cell death or genetic mutations. Seasonal increases in UV-B irradiance linked to stratospheric ozone depletion are well documented at the poles, and there is evidence that UV-B radiation has increased in temperate latitudes. Laboratory studies show detrimental effects of UV-B radiation on amphibian growth, development, and behavior. Field studies demonstrate that ambient UV-B radiation adversely affects the developing embryos of some, but not all, species. Moreover, some recent studies have shown that ambient UV-B radiation may cause malformities. This chapter summarizes the methods, evidence, and implications of the effects of UV-B radiation on amphibians based on the results of field experiments.

Keywords:   ultraviolet radiation, amphibians, population declines, UV-B radiation, field experiments, climate changes, photoproducts, growth, malformities, development

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