During 1997, collections of larval amphibians were made at 130 sites in Nebraska. Collections were made during 1 June - 16 July, so as to replicate earlier samples taken by John D. Lynch in 1971-75. The same sites that Lynch surveyed were sampled in the recent survey, unless they were no longer present or accessible, in which case a replacement site within 1.6 km was sought. The overall objective of the study is to test the hypothesis that amphibian populations have declined in Nebraska. Results reported here indicate the species found in each county where collections were made.

This study was supported in part by the Grasslands Ecosystem Initiative, Northern Prairie Wildlife Research Center, U.S. Geological Survey-Biological Resources Division, Jamestown, North Dakota.

Table of Contents

Survey Results by Species

Tiger salamander -- Ambystoma tigrinum

Plains spadefoot -- Spea bombifrons

Woodhouse's toad -- Bufo woodhousii

Blanchard's cricket frog -- Acris crepitans

Great Plains toad -- Bufo cognatus

Chorus frog -- Pseudacris triseriata

Plains leopard frog -- Rana blairi

Northern leopard frog -- Rana pipiens

Bullfrog -- Rana catesbieana

Gray treefrog -- Hyla crysoscelis

Survey Results by County

Click on a blue colored county on the map below or choose a county from the list under the map to view collection results by county.

Blaine | Boone | Cass | Deuel | Fillmore | Gage | Garfield | Grant | Greeley | Hooker | Jefferson | Johnson | Knox | Lancaster | Nemaha | Otoe | Pawnee | Richardson | Seward | Sherman | Thomas | Washington | Wheeler | York

U.S. Department of the Interior, U.S. Geological Survey 8711 37th Street SE, Jamestown, North Dakota 58401, USA URL: http://www.npwrc.usgs.gov Contact: npwrc@usgs.gov Site Last Updated: October 14, 2004 Privacy Statement | Disclaimer | FOIA | Accessibility