Influence of observers and stream flow on northern two-lined salamander (Eurycea bislineata bislineata) relative abundance estimates in Acadia and Shenandoah National Parks, USA
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Abstract
We investigated effects of observers and stream flow on Northern Two-Lined Salamander (Eurycea bislineata bislineata) counts in streams in Acadia (ANP) and Shenandoah National Parks (SNP). We counted salamanders in 22 ANP streams during high flow (May to June 2002) and during low flow (July 2002). We also counted salamanders in SNP in nine streams during high flow (summer 2003) and 11 streams during low flow (summers 2001?02, 2004). In 2002, we used a modified cover-controlled active search method with a first and second observer. In succession, observers turned over 100 rocks along five 1-m belt transects across the streambed. The difference between observers in total salamander counts was not significant. We counted fewer E. b. bislineata during high flow conditions, confirming that detection of this species is reduced during high flow periods and that assessment of stream salamander relative abundance is likely more reliable during low or base flow conditions.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Influence of observers and stream flow on northern two-lined salamander (Eurycea bislineata bislineata) relative abundance estimates in Acadia and Shenandoah National Parks, USA |
| Series title | Journal of Herpetology |
| DOI | 10.1670/0022-1511(2007)41[325:IOOASF]2.0.CO;2 |
| Volume | 41 |
| Issue | 2 |
| Year Published | 2007 |
| Language | English |
| Publisher | Society for the Study of Amphibians and Reptiles |
| Contributing office(s) | Patuxent Wildlife Research Center, Virginia and West Virginia Water Science Center |
| Description | 5 p. |
| First page | 325 |
| Last page | 329 |
| Country | United States |
| State | Maine, Virginia |
| Other Geospatial | Acadia National Park, Shenandoah National Park |
| Google Analytic Metrics | Metrics page |