| Abstract: | We surveyed amphibians at 4 montane and 2 plains lentic sites in northern Colorado using 3 techniques: standardized call surveys, automated recording devices (frog-loggers), and intensive surveys included capture-recapture techniques. Amphibians were observed at 5 sites. Species richness varied from 0 to 4 species at each site. Richness course, the sums of species richness among sites, were similar among methods: 8 for call surveys, 10 for frog-loggers, and 11 for intensive surveys (9 if the non-vocal salamander Ambystoma tigrinum is excluded). The frog-logger at 1 site uncovered Spea bombifrons which was not active during the times when call and intensive surveys were conducted. Relative abundance scores from call surveys failed to reflect a relatively large population of Bufo woodhousii at 1 site and only weakly differentiated among different-sized populations of Pseudacris maculata at 3 other sites. For extensive applications, call surveys have the lowest costs and fewest requirements for highly trained personnel. However, for a variety of reason, call surveys cannot be used with equal effectiveness in all parts of North America. |
| Genre: | Article |
| ProdID: | 1015346 |
| Citation Author: | Corn, P.S.; Muths, E.; Iko, W.M. |
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| Citation End Page: | 30 |
| Citation Issue: | 1 |
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| Citation Language: | English |
| Citation Larger Work Title: | Northwestern Naturalist |
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| Citation Number Of Pages: | 9 |
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| Citation Phsyical Description: | p. 22-30 |
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| Citation Search Results Text: | A comparison in Colorado of three methods to monitor breeding amphibians; 2000; Article; Journal; Northwestern Naturalist; Corn, P.S.; Muths, E.; Iko, W.M. |
| Citation Start Page: | 22 |
| Citation Volume: | 81 |
| Citation Year: | 2000 |
| Type: | citation/reference |
| Text: | A comparison in Colorado of three methods to monitor breeding amphibians; 2000; Article; Journal; Northwestern Naturalist; Corn, P.S.; Muths, E.; Iko, W.M. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| URL (INDEX PAGE): | http://www.fort.usgs.gov/Products/Publications/pub_abstract.asp?PubID=3761 |
| Date Other: | Sat, 1 Jan 2000 00:00 -0600 |
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