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FACTORS AFFECTING SPECIES' RISK OF EXTINCTION: AN EMPIRICAL ANALYSIS OF ESA AND NATURESERVE LISTINGS
Author(s) -
LABAND DAVID N.,
NIESWIADOMY MICHAEL
Publication year - 2006
Publication title -
contemporary economic policy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.454
H-Index - 49
eISSN - 1465-7287
pISSN - 1074-3529
DOI - 10.1093/cep/byj015
Subject(s) - endangered species , wildlife , extinction (optical mineralogy) , geography , wildlife trade , ecology , population , economics , environmental protection , biology , demography , habitat , sociology , paleontology
The authors examine the impact of environmental and political variables on two measures of species imperilment across 49 U.S. states: the fraction of all species in a state identified by NatureServe as being “at‐risk” of extinction, and the fraction of species in a state listed under the U.S. Fish & Wildlife Service's (FWS) Endangered Species Act (ESA). A highly significant determinant of both measures is the fraction of species endemic to the state. Population growth increases the at‐risk measure, but not the ESA listings. There is a significant concern for plant imperilment by NatureServe, but not by the FWS.