Zobrazeno 1 - 10 of 11 pro vyhledávání: '"Richard L. Merrick"'
1
Mechanisms for science to shape US living marine resource conservation policy
Autor: Richard L. Merrick
Publikováno v: ICES Journal of Marine Science. 75:2319-2324
National Oceanic and Atmospheric Administration Fisheries are responsible for the stewardship of the US living marine resources and their habitat and for providing productive and sustainable fisheries, safe sources of seafood, the recovery and conser
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::49c75251dafd5cfbd41097b101acc8eb
https://doi.org/10.1093/icesjms/fsx228
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2
Managing U.S. Atlantic large whale entanglements: Four guiding principles
Autor: Mary A. Colligan, Glenn Salvador, Michael J. Asaro, Richard L. Merrick, Kathryn S. Swails, John Higgins, David M. Gouveia, Diane Borggaard, John Kenney
Publikováno v: Marine Policy. 84:202-212
Fatal entanglements in fishing gear threaten marine mammal populations worldwide. The management of entanglements of large whales, such as the North Atlantic right whale ( Eubalaena glacialis ), with commercial fisheries, is a challenge given the spe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0afb853529bb045ed2a7ce0a2a615e3c
https://doi.org/10.1016/j.marpol.2017.06.027
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4
Testing Decision Rules for Categorizing Species’ Extinction Risk to Help Develop Quantitative Listing Criteria for the U.S. Endangered Species Act
Autor: Katherine Ralls, Barbara L. Taylor, Michael C. Runge, Richard L. Merrick, Jean Fitts Cochrane, Tracey J. Regan, Grant G. Thompson
Publikováno v: Conservation Biology. 27:821-831
Lack of guidance for interpreting the definitions of endangered and threatened in the U.S. Endangered Species Act (ESA) has resulted in case-by-case decision making leaving the process vulnerable to being considered arbitrary or capricious. Adopting
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8d9fffc684b45acddb09635ac1a2c9f1
https://doi.org/10.1111/cobi.12055
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5
SPATIAL AND TEMPORAL VARIATION IN THE TIMING OF BIRTHS OF STELLER SEA LIONS
Autor: Vladimir N. Burkanov, Evgeny G. Mamaev, Donald G. Calkins, Richard L. Merrick, Grey W. Pendleton, Burney J. Le Boeuf, Kenneth W. Pitcher
Publikováno v: Journal of Mammalogy. 82:1047-1053
Throughout the range of the Steller sea lion (Eumetopias jubatus), nearly all births of full-term pups observed from 1968 to 1998 occurred between 15 May and 15 July. We found significant differences in timing of births between rookeries with the ear
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::359d863f16163f246cea181e74de4ff6
https://doi.org/10.1644/1545-1542(2001)082<1047:satvit>2.0.co
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6
Diet diversity of Steller sea lions (Eumetopias jubatus) and their population decline in Alaska: a potential relationship
Autor: G Vernon Byrd, Richard L Merrick, M Kathryn Chumbley
Publikováno v: Canadian Journal of Fisheries and Aquatic Sciences. 54:1342-1348
We examined the diet of Steller sea lions (Eumetopias jubatus) during June-August 1990-1993 from six areas in the Aleutian Islands and Gulf of Alaska and related these diets to sea lion population changes that occurred during the period. Seven genera
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c9e356ab4e03f6bc2f34cbfc53b0dda6
https://doi.org/10.1139/f97-037
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7
Foraging behavior of adult female and young-of-the-year Steller sea lions in Alaskan waters
Autor: Thomas R. Loughlin, Richard L. Merrick
Publikováno v: Canadian Journal of Zoology. 75:776-786
One explanation for recent declines in the Alaskan Steller sea lion (Eumetopias jubatus) population is that the availability of preferred prey has changed. Part of our evaluation of this hypothesis involved the use of conventional radio and satellite
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::51c6066423c5ed99b965bc8dd94d4442
https://doi.org/10.1139/z97-099
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8
INVESTIGATING TROPHIC RELATIONSHIPS OF PINNIPEDS IN ALASKA AND WASHINGTON USING STABLE ISOTOPE RATIOS OF NITROGEN AND CARBON
Autor: Keith A. Hobson, John L. Sease, Richard L. Merrick, John F. Piatt
Publikováno v: Marine Mammal Science. 13:114-132
We measured stable-nitrogen (δ15N) and stable-carbon (δ13C) isotope ratios in muscle and hair from 7 northern fur seals (Callorhinus ursinus) from the Pribilof Islands, Alaska, and 27 Steller sea lions (Eumetopias jubatus), and 14 harbor seals (Pho
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::40bd180900284a22512174b96c3b38a9
https://doi.org/10.1111/j.1748-7692.1997.tb00615.x
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10
Characteristics of feeding trips of female northern fur seals
Autor: Thomas R. Loughlin, John L. Bengtson, Richard L. Merrick
Publikováno v: Canadian Journal of Zoology. 65:2079-2084
Female northern fur seals (Callorhinus ursinus) from St. Paul Island, Alaska, were equipped with head-mounted radio transmitters and located at sea to determine their movements and feeding locations during July and August. In 1984, we followed 4 fur
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::685f1821fe2ee8c7b3b8a617616ea7e0
https://doi.org/10.1139/z87-318
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