An Amphibian and Reptile Inventory of Isle Royale National Park

58 Pages·2008·4.35 MB·English

National Park Service
U.S. Department of the Interior

Natural Resource Program Center

An Amphibian and Reptile Inventory of Isle Royale
National Park

Natural Resource Technical Report NPS/GLKN/NRTR—2008/146
ON THE COVER
Eastern American toads, Daisy Farm Campground, Isle Royale, 2005.
Photo by G.S. Casper
An Amphibian and Reptile Inventory of Isle Royale
National Park

Natural Resource Technical Report NPS/GLKN/NRTR—2008/146

Gary S. Casper
Great Lakes Ecological Services, LLC
P.O. Box 375, Slinger, WI 53086

December 2008

U.S. Department of the Interior
National Park Service
Natural Resource Program Center
Fort Collins, Colorado
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Please cite this publication as:

Casper, G. S. 2008. An amphibian and reptile inventory of Isle Royale National Park. Natural
Resource Technical Report NPS/GLKN/NRTR—2008/146. National Park Service, Fort Collins,
Colorado.

NPS D-123, December 2008
ii
Contents
Page
Figures............................................................................................................................................v
Tables............................................................................................................................................vii
Abstract..........................................................................................................................................ix
Acknowledgments..........................................................................................................................xi
Introduction.....................................................................................................................................1
Methods..........................................................................................................................................3
Field Methods.............................................................................................................................3
Collection of Vouchers...............................................................................................................3
Review of Existing Data and Specimens....................................................................................3
Results and Discussion...................................................................................................................7
Confirmation of Species.............................................................................................................7
Species Inventory Results.........................................................................................................12
Salamanders..........................................................................................................................12
Frogs and Toads....................................................................................................................17
Turtles...................................................................................................................................24
Snakes...................................................................................................................................25
Species Inventory Discussion...................................................................................................29
Recommendations.........................................................................................................................31
Conservation and Management................................................................................................31
Inventory and Monitoring.........................................................................................................31
Literature Cited.............................................................................................................................33
Appendixes...................................................................................................................................39

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Figures
Page
Figure 1. Study area, Isle Royale National Park.............................................................................2
Figure 2. Blue-spotted salamander, Isle Royale, 2005.................................................................12
Figure 3. Blue-spotted salamander eggs, Isle Royale, 2005.........................................................13
Figure 4. Terrestrial adult newt, Isle Royale, 2005......................................................................15
Figure 5. Aquatic adult newt, Isle Royale, 2005..........................................................................15
Figure 6. Newt eft, Isle Royale, 2005...........................................................................................15
Figure 7. Toad hunting at night on Daisy Farm Trail, Isle Royale, 2005.....................................18
Figure 8. Basking painted turtle, Benson Creek, Isle Royale, 2005.............................................25
Figure 9. Color variation in Isle Royale gartersnakes (Daisy Farm Campground, 2005)............28

v

Tables
Page
Table 1. Sampling methods, Isle Royale National Park, 2004-2005..............................................4
Table 2. Museums canvassed for Isle Royale material (either individually or through
HerpNet).........................................................................................................................................5
Table 3. Comparison of common and scientific names for species that have been
reclassified (based on Crother 2008)..............................................................................................6
Table 4. Isle Royale National Park amphibian and reptile checklist..............................................8

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