Northern Prairie Wildlife Research Center
Barinaga, M. 1990. Where have all the froggies gone? Science 247:1033-1034. Bishop, C. A., K. E. Pettit, M. E. Gartshore, and D. A. MacLeod. 1996. Extensive monitoring of anurans in Ontario, Canada (1992-1993). In D. M. Green, ed. Amphibians in decline: Reports from the Canadian Declining Amphibian Task Force. Herpetological Conservation 1. In press. Blaustein, A. R. 1994. Chicken Little or Nero's fiddle? A perspective on declining amphibian populations. Herpetologica 50:85-97. Blaustein, A. R. and D. B. Wake. 1990. Declining amphibian populations: a global phenomenon? Trends in Ecology and Evolution 5: 203-204. Bluemle, J. P. 1991. The face of North Dakota, revised edition. North Dakota Geological Series 21, Bismarck, ND. 177pp. Bowers, D. G., D. E. Andersen, and N. H. Euliss, Jr. 1997. Anurans as indicators of wetland condition in the Prairie Pothole Region of North Dakota: an Environmental Monitoring and Assessment Program pilot project. In M. J. Lannoo, ed. Status and Trends of Midwestern Amphibians. University of Iowa Press, Iowa City. In press. Conant, R., and J. T. Collins. 1991. A Field Guide to Reptiles and Amphibians: Eastern and Central North America. Third edition. Houghton Mifflin Company, Boston, MA. 450pp. Cowardin, L. M., D. S. Gilmer, and L. M. Mechlin. 1981. Characteristics of central North Dakota wetlands determined from sample aerial photographs and ground study. Wildlife Society Bulletin 9:280-288. Dahl, T. E. 1990. Wetlands losses in the United States 1780's to 1980's. U.S. Fish and Wildlife Service, Washington, D.C. 21pp. Gill, D. E. 1978. The metapopulation ecology of the red-spotted newt, Notophthalmus viridescens (Rafinesque). Ecological Monographs 48:145-166. Hayes, M. P., and M. R. Jennings. 1986. Decline of ranid frog species in western North America: are bullfrogs (Rana catesbeiana) responsible? Journal of Herpetology 20:490-509. Heyer, W. R., M. A. Donnelly, R. W. McDiarmid, L. C. Hayek, and M. S. Foster, eds. 1994. Measuring and monitoring biological diversity: standard methods for amphibians. Smithsonian Institution Press, Washington, DC. 364pp. Hoberg, T., and C. Gause. 1992. Reptiles & amphibians of North Dakota. North Dakota Outdoors 55(1):7-18. Johnson, D. H. 1996. Management of northern prairies and wetlands for the conservation of neotropical migratory birds. Pages 53-67 in F. R. Thompson, III, ed. Management of Midwestern Landscapes for the Conservation of Neotropical Migratory Birds. U.S.D.A. Forest Service General Technical Report NC-187. North Central Forest Experiment Station, St. Paul. 208pp. Johnson, D. H., and D. L. Larson. 1994. Amphibian declines: real or perceived? Proceedings of the North Dakota Academy of Science 48:15. Pechmann, J. H. K., D. E. Scott, R. D. Semlitsch, J. P. Caldwell, L. J. Vitt, and J. W. Gibbons. 1991. Declining amphibian populations: the problem of separating human impacts from natural fluctuations. Science 253:892-895. Pechmann, J. H. K., and H. M. Wilbur. 1994. Putting declining amphibian populations in perspective: natural fluctuations and human impacts. Herpetologica 50:65-84. Phillips, K. 1990. Where have all the frogs and toads gone? BioScience 40:422-424. Robbins, C. S., D. Bystrak, and P. H. Geissler. 1986. The Breeding Bird Survey: its first fifteen years, 1965-1979. U.S. Fish and Wildlife Service Resource Publication 157. 196pp. Shirose, L. J., C. A. Bishop, D. M. Green, C. J.MacDonald, R. J. Brooks, N. J. Helferty. Validation tests of an amphibian call count survey technique in Ontario, Canada. Journal of Herpetology. In press. Sjögren, P. 1991. Extinction and isolation gradients in metapopulations: the case of the pool frog (Rana lessonae). Pages 135-147 in M. Gilpin and I. Hanski, eds. Metapopulation dynamics: empirical and theoretical investigations. Academic Press, London. Stebbins, R. C., and N. W. Cohen. 1995. A Natural History of Amphibians. Princeton University Press, Princeton, NJ. 316pp. Wake, D. B. 1991. Declining amphibian populations. Science 253: 860. Wheeler, G. C., and J. Wheeler. 1966. The Amphibians and Reptiles of North Dakota. University of North Dakota Press, Grand Forks. 104pp. Wyman, R.L. 1990. What's happening to the amphibians? Conservation Biology 4: 350-352. Zimmerman, B. L. 1994. Audio strip transects. Pages 92-97 in W. R. Heyer, M. A. Donnelly, R. W. McDiarmid, L. C. Hayek, and M. S. Foster, eds. Measuring and monitoring biological diversity: standard methods for amphibians. Smithsonian Institution Press, Washington, DC.