Predicting the Stability of Endangered Stonecats in the LaPlatte River, Vermont
| Autor: | Therese M. Donovan, Elizabeth A. Puchala, Donna L. Parrish |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Hydrology education.field_of_study Maximum temperature biology Ecology 010604 marine biology & hydrobiology Noturus flavus Population Endangered species Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Stability (probability) Electrofishing Distribution pattern Environmental science Fish education Ecology Evolution Behavior and Systematics |
| Zdroj: | Transactions of the American Fisheries Society. 145:903-912 |
| ISSN: | 1548-8659 0002-8487 |
| DOI: | 10.1080/00028487.2016.1167779 |
| Popis: | Stonecats Noturus flavus in Vermont conform to a rare distribution pattern (as designated by Rabinowitz 1981) because their known distribution within the state is limited to the LaPlatte and Missisquoi rivers. We focused on Stonecats in the LaPlatte River to predict the stability of the population. During 2012–2014, we captured Stonecats via backpack electrofishing; fish were PIT-tagged (>90 mm TL) and marked with visible implant elastomer. Among the 1,671 Stonecats that were captured, 1,252 were PIT-tagged. Only 156 (12%) of the PIT-tagged fish were recaptured, and only 22 of those individuals were recaptured more than once. The Pradel model in Program MARK was used to estimate apparent survival (Φ) and seniority, which were used to derive the rate of population change (λ) for the Stonecat encounter histories we studied. We examined a total of 64 models in our candidate set, with the following covariates: TL at first capture, maximum temperature, season, maximum discharge, and area sampled. Survi... |
| Databáze: | OpenAIRE |
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