Melinda G. Knutson,
William B. Richardson, David M. Reineke, Brian R. Gray, Jeffrey R. Parmelee,
and Shawn E. Weick. 2004. Agricultural ponds support amphibian populations.
Ecological Applications 14:669–684.
Appendix A. A figure showing
the amphibian species present in 40 ponds and four types of surrounding land uses,
based on amphibian egg mass and larval dipnet surveys, for agricultural ponds
in Houston and Winona Counties, Minnesota, 2000–2001. Pond types include
agricultural (AGRIC), grazed (GRAZE), non-grazed (NGRAZ), and natural (NATUR).
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