Výsledky vyhledávání - "Olaf P. Langness"

EVALUATION OF TRAWL SAMPLING FOR THREATENED EULACHON (THALEICHTHYS PACIFICUS) IN THE LOWER COLUMBIA RIVER DURING JANUARY–MARCH 2013

Autor: Olaf P Langness, Paul J. Bentley, Jeannette E. Zamon, Susan A. Hinton

Publikováno v: Northwestern Naturalist. 102

The population of Eulachon (Thaleicthys pacificus) spawning in the Columbia River and its tributaries is thought to be the largest in the world. Eulachon historically supported indigenous, commercial, and sport harvests, but were listed as threatened

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3e56c8e9af77ec0cd66ccc150f93feef
https://doi.org/10.1898/1051-1733-102.3.179

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Changes in adult Chinook salmon (Oncorhynchus tshawytscha) survival within the lower Columbia River amid increasing pinniped abundance

Autor: Mark J. Henderson, Benjamin P. Sandford, A. Michelle Wargo Rub, David J. Teel, Olaf P Langness, Matthew J. Tennis, Bjorn K. van der Leeuw, Nicholas A. Som, Donald M. Van Doornik, David D. Huff

Publikováno v: Canadian Journal of Fisheries and Aquatic Sciences. 76:1862-1873

Considerable effort towards conservation has contributed to the recovery of historically depleted pinniped populations worldwide. However, in several locations where pinnipeds have increased, they have been blamed for preventing the recovery of comme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3c7d8fdde8671c44a9023c6a6fdc98f4
https://doi.org/10.1139/cjfas-2018-0290

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Organochlorine and Metal Contaminants in the Blood Plasma of Green Sturgeon Caught in Washington Coastal Estuaries

Autor: Julie A, Layshock, Molly A H, Webb, Olaf P, Langness, John Carlos, Garza, Laura B, Heironimus, Deke, Gundersen

Publikováno v: Archives of environmental contamination and toxicology. 82(1)

Non-invasive monitoring was used to evaluate the concentrations of 40 contaminants in the blood plasma of the North American Green Sturgeon Acipenser medirostris caught and released from three estuaries in Washington State. The highest contaminant co

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::ad0c90d2a98891f5e69d14cf05df16fc
https://pubmed.ncbi.nlm.nih.gov/34655301

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Further investigation of green sturgeon (Acipenser medirostris) distinct population segment composition in non-natal estuaries and preliminary evidence of Columbia River spawning

Autor: Erick S. Van Dyke, Andrea D. Schreier, Olaf P. Langness, Joshua A. Israel

Publikováno v: Environmental Biology of Fishes. 99:1021-1032

Green sturgeon (Acipenser medirostris) is a highly migratory, marine oriented species that congregates in non-natal estuaries during summer and early fall. Individuals from the threatened Southern Distinct Population Segment (SDPS) and non-listed Nor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bc0e2b6b79d261e9ca2e371fe02b092b
https://doi.org/10.1007/s10641-016-0538-1

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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

Publikováno v: Transactions of the American Fisheries Society. 140:108-122

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 activiti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d8dba0ed4cff5899e6212c0594c0e7e9
https://doi.org/10.1080/00028487.2011.557017

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Do sturgeon limit burrowing shrimp populations in Pacific Northwest Estuaries?

Autor: Brett R. Dumbauld, David L. Holden, Olaf P. Langness

Publikováno v: Environmental Biology of Fishes. 83:283-296

Green sturgeon, Acipenser medirostris, and white sturgeon, Acipenser transmontanus, are frequent inhabitants of coastal estuaries from northern California, USA to British Columbia, Canada. An analysis of stomach contents from 95 green sturgeon and si

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bddd915de44bd89728e2f8250054da74
https://doi.org/10.1007/s10641-008-9333-y

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Reply to Zabel and Williams' comments on 'Contrasting patterns of productivity and survival rates for stream-type chinook salmon (Oncorhynchus tshawytscha) populations of the Snake and Columbia rivers' by Schaller et al. (1999)

Autor: Howard A. Schaller, Charles E. Petrosky, Olaf P Langness

Publikováno v: Canadian Journal of Fisheries and Aquatic Sciences. 57:1742-1746

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f973572e2d0a0508cf8a6638870253f9
https://doi.org/10.1139/f00-100

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Contrasting patterns of productivity and survival rates for stream-type chinook salmon (Oncorhynchus tshawytscha) populations of the Snake and Columbia rivers

Autor: Howard A. Schaller, Charles E. Petrosky, Olaf P Langness

Publikováno v: Canadian Journal of Fisheries and Aquatic Sciences. 56:1031-1045

The effects of increasing hydropower development and operation appear extremely important in the decline and near extripation of stream-type chinook salmon (Oncorhynchus tshawytscha) stocks of the upper Columbia and Snake rivers. We evaluated tempora

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::83727445b156fec5c99ec6f74183675d
https://doi.org/10.1139/f99-037

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