REFERENCES
- John Heinz , H. III and Center for Science, Economics and the Environment . 2008 . The state of the nation's ecosystems 2008: highlights Washington , DC
- Jones , R. , Travers , C. , Rodgers , C. , Lazar , B. , English , E. , Lipton , J. , Vogel , J. , Strzepek , K. and Martinich , J. 2013 . Climate change impacts on freshwater recreational fishing in the United States . Mitigation & Adaptation Strategies for Global Change , 18 ( 6 ) : 731 – 758 .
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- U.S. Fish and Wildlife Service . 2013 . Environmental conservation online system Available: ecos.fws.gov/tess_public/SpeciesReport.do?groups=E&listingType=L&mapstatus=1. (October 2013)