Download or read book Spatial and Temporal Distribution of Larval Fish in the Western Gulf of Alaska with Emphasis on the Period of Peak Abundance of Walleye Pollock Ther written by Alaska Fisheries Science Center Nationa and published by BiblioGov. This book was released on 2013-06 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the 1970's the National Oceanic and Atmospheric Administration (NOAA) was made to manage our oceanic and atmospheric resources. The Alaska Fisheries Science Center is the research branch for marine life and coastal oceans off parts of the U.S. west coast and Alaska. This includes the Eastern Bering Sea where some the worlds most important commercial fishing takes place. Their mission is to develop and maintain scientific exploration to help understand and manage that region's environment. Over the years there have been many reports published which discuss their findings; this is one of them.
Download or read book Spatial and Temporal Distribution of Larval Fish in the Western Gulf of Alaska written by William C. Rugen and published by . This book was released on 1990 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Atlas of Abundance and Distribution Patterns of Ichthyoplankton from the Northeast Pacific Ocean and Bering Sea Ecosystems Based on Research Conducted by the Alaska Fisheries Science Center 1972 1996 written by and published by . This book was released on 2003 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fishery Bulletin written by and published by . This book was released on 2001 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Climate Change and Northern Fish Populations written by National Research Council Canada and published by NRC Research Press. This book was released on 1995 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt: These documents summarize some of the recent studies of the relationships among climate, the aquatic environment, and the dynamics of fish populations. The studies are mostly from the North Pacific ocean, but there are reports of investigations from the North Atlatic Ocean and from fresh water. Various papers include numerous examples of the relationships between fish abundance trends and the environment.
Download or read book The Global Coastal Ocean written by Allan R. Robinson and published by Harvard University Press. This book was released on 2005 with total page 1080 pages. Available in PDF, EPUB and Kindle. Book excerpt: In multidisciplinary efforts to understand and manage our planet, contemporary ocean science plays an essential role. Volumes 13 and 14 of The Sea focus on two of the most important components in the field of ocean science today--the coastal ocean and its interactions with the deep sea, and coupled physical-biogeochemical and ecosystem dynamics.
Download or read book Steller Sea Lion Protection Measures written by and published by . This book was released on 2001 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution and Abundance Patterns of Eggs and Larvae of Walleye Pollock Theragra Chalcogramma in the Western Gulf of Alaska written by Jean R. Dunn and published by . This book was released on 1984 with total page 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Sea Ideas and Observations on Progress in the Study of the Seas written by Kenneth H. Brink and published by . This book was released on 1962 with total page 1070 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology and Energetics of Early Life Stages of Walleye Pollock in the Eastern Bering Sea written by Elizabeth Calvert Siddon and published by . This book was released on 2013 with total page 360 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding mechanisms behind variability in early life survival of marine fishes can improve predictive capabilities for recruitment success under changing climate conditions. Ecosystem changes in response to climate variability in the eastern Bering Sea affect commercial species including walleye pollock (Theragra chalcogramma), which represent an ecologically important component of the ecosystem and support the largest commercial fishery in the United States. The goal of my dissertation was to better understand spatial and temporal dynamics in the ecology of early life stages of walleye pollock in the eastern Bering Sea through: (1) an examination of shifts in larval fish community composition in response to environmental variability across both warm and cold conditions; (2) a quantification of the seasonal progression in energy content of age-0 walleye pollock which provides critical information for predicting overwinter survival and recruitment to age-1 because age-0 walleye pollock rely on sufficient energy reserves to survive their first winter; and (3) a modeling approach to better understand the role of prey quality, prey composition, and water temperature on spatial and temporal patterns of juvenile walleye pollock growth with implications for year-class survival and recruitment success. In the community analysis, I identified a strong cross-shelf gradient delineating slope and shelf assemblages, an influence of water masses from the Gulf of Alaska on species composition, and the importance of nearshore areas for larval fish. Species assemblages differed between warm and cold periods, and larval abundances, including that of walleye pollock, were generally greater in warm years. I identified different energy allocation strategies indicating that distinct ontogenetic stages face different survival constraints. Larval walleye pollock favored allocation to somatic growth, presumably to escape size-dependent predation, while juveniles allocated energy to lipid storage in late summer. Finally, I provide evidence that a spatial mismatch between juvenile walleye pollock and growth 'hot spots' in 2005 contributed to poor recruitment while a higher degree of overlap in 2010 resulted in improved recruitment. I highlight the importance of climate-driven spatial patterns in community structure, prey dynamics, and environmental conditions that influence the growth and survival of an important gadoid population in a sub-arctic marine ecosystem.
Download or read book Collected Reprints written by Southwest Fisheries Center (U.S.) and published by . This book was released on 1987 with total page 674 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Collected Reprints written by and published by . This book was released on 1992 with total page 672 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Oceanic Abstracts written by and published by . This book was released on 1996 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Bering Sea Ecosystem written by National Research Council and published by National Academies Press. This book was released on 1996-05-08 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Bering Sea, which lies between the United States and Russia, is one of the most productive ecosystems in the world and has prolific fishing grounds. Yet there have been significant unexplained population fluctuations in marine mammals and birds in the region. The book examines the Bering Sea ecosystem's dynamics and the relationship between man and the ecosystem, in order to identify potential reasons for the population fluctuations as well as identify ways the Sea's living resources can be better managed by government.
Download or read book Feeding Behavior of Larval Walleye Pollock Theragra Chalcogramma Pallas and Food Availability to Larval Pollock in the Southeastern Bering Sea written by Marjory Elizabeth Clarke and published by . This book was released on 1984 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Results of Cooperative Research Acoustic Surveys of Walleye Pollock Theragra Chalcogramma in the Western Gulf of Alaska from September 2007 to September 2011 written by Suzanne M. Romain and published by . This book was released on 2012 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecology Abstracts written by and published by . This book was released on 1996 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coverage: 1982- current; updated: monthly. This database covers current ecology research across a wide range of disciplines, reflecting recent advances in light of growing evidence regarding global environmental change and destruction. Major ares of subject coverage include: Algae/lichens, Animals, Annelids, Aquatic ecosystems, Arachnids, Arid zones, Birds, Brackish water, Bryophytes/pteridophytes, Coastal ecosystems, Conifers, Conservation, Control, Crustaceans, Ecosyst em studies, Fungi, Grasses, Grasslands, High altitude environments, Human ecology, Insects, Legumes, Mammals, Management, Microorganisms, Molluscs, Nematodes, Paleo-ecology, Plants, Pollution studies, Reptiles, River basins, Soil, TAiga/tundra, Terrestrial ecosystems, Vertebrates, Wetlands, Woodlands.
