Comparison of Visual Survey and Mark–Recapture Population Estimates of a Benthic Fish in Hawaii
| Autor: | Bradley A. Lamphere, Stacy A. C. Nelson, James F. Gilliam, Ernie F. Hain, Michael J. Blum, Peter B. McIntyre |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
biology Ecology 010604 marine biology & hydrobiology Awaous stamineus Sampling (statistics) Survey sampling Aquatic Science biology.organism_classification 010603 evolutionary biology 01 natural sciences Population density Mark and recapture Geography Benthic zone Statistics Fish Quadrat Ecology Evolution Behavior and Systematics |
| Zdroj: | Transactions of the American Fisheries Society. 145:878-887 |
| ISSN: | 1548-8659 0002-8487 |
| DOI: | 10.1080/00028487.2016.1159610 |
| Popis: | Visual surveys are conducted to rapidly estimate population densities of stream fishes, often without calibration against more established or more widely used methods to determine precision and accuracy or to correct for potential biases. We compared population density estimates from a visual survey (VS) point quadrat method widely used in Hawaii with estimates from “in hand” individual and batch mark–recapture (BMR) methods. Visual survey sampling and individual mark–recapture (IMR) sampling were conducted in three watersheds that represent gradients of land use and prevalence of nonnative poeciliid fishes on the Island of Hawaii. Focusing on adult O‘opu Nākea Awaous stamineus, VSs were conducted prior to IMR events to allow direct comparisons of results independent of location and time. Density estimates of O‘opu Nākea from VS and IMR samplings were strongly correlated, although VS estimates were generally higher and underrepresented exceptionally large fish. Batch mark–recapture estimates of O‘... |
| Databáze: | OpenAIRE |
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