Electronic Tagging of Green Sturgeon Reveals Population Structure and Movement among Estuaries
| Autor: | Olaf P. Langness, Joseph C. Heublein, Dave Vogel, Barry W. McCovey, Daniel L. Erickson, Greg Williams, Mary L. Moser, John T. Kelly, A. Peter Klimley, William D. Pinnix, Michael Belchik, Steven T. Lindley |
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| Rok vydání: | 2011 |
| Předmět: |
education.field_of_study
geography.geographical_feature_category biology Ecology Population structure Estuary Aquatic Science biology.organism_classification Fishery Geography Habitat destruction Habitat Electronic tagging Green sturgeon Acipenser education Bay Ecology Evolution Behavior and Systematics |
| Zdroj: | Transactions of the American Fisheries Society. 140:108-122 |
| ISSN: | 1548-8659 0002-8487 |
| DOI: | 10.1080/00028487.2011.557017 |
| Popis: | Green sturgeon Acipenser medirostris spend much of their lives outside of their natal rivers, but the details of their migrations and habitat use are poorly known, which limits our understanding of how this species might be affected by human activities and habitat degradation. We tagged 355 green sturgeon with acoustic transmitters on their spawning grounds and in known nonspawning aggregation sites and examined their movement among these sites and other potentially important locations using automated data-logging hydrophones. We found that green sturgeon inhabit a number of estuarine and coastal sites over the summer, including the Columbia River estuary, Willapa Bay, Grays Harbor, and the estuaries of certain smaller rivers in Oregon, especially the Umpqua River estuary. Green sturgeon from different natal rivers exhibited different patterns of habitat use; most notably, San Francisco Bay was used only by Sacramento River fish, while the Umpqua River estuary was used mostly by fish from the Kla... |
| Databáze: | OpenAIRE |
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