Download or read book Pacific Salmon Life Histories written by Cornelis Groot and published by UBC Press. This book was released on 1991 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pacific salmon are an important biological and economic resource of countries of the North Pacific rim. They are also a unique group of fish possessing unusually complex life histories. There are seven species of Pacific salmon, five occurring on both the North American and Asian continents (sockeye, pink, chum, chinook, and coho) and two (masu and amago) only in Asia. The life cycle of the Pacific salmon begins in the autumn when the adult female deposits eggs that are fertilized in gravel beds in rivers or lakes. The young emerge from the gravel the following spring and will either migrate immediately to salt water or spend one or more years in a river or lake before migrating. Migrations in the ocean are extensive during the feeding and growing phase, covering thousands of kilometres. After one or more years the maturing adults find their way back to their home river, returning to their ancestral breeding grounds to spawn. They die after spawning and the eggs in the gravel signify a new cycle. Upon this theme Pacific salmon have developed many variations, both between as well as within species. Pacific Salmon Life Histories provides detailed descriptions of the different life phases through which each of the seven species passes. Each chapter is written by a scientist who has spent years studying and observing a particular species of salmon. Some of the topics covered are geographic distribution, transplants, freshwater life, ocean life, development, growth, feeding, diet, migration, and spawning behaviour. The text is richly supplemented by numerous maps, illustrations, colour plates, and tables and there is a detailed general index, as well as a useful geographical index.
Download or read book A History of Sockeye Salmon Research Karluk River System Alaska 1880 2010 written by Richard Gard and published by . This book was released on 2014 with total page 411 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Adaptive Sampling written by Steven K. Thompson and published by Wiley-Interscience. This book was released on 1996-06-07 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt: Offering a viable solution to the long-standing problem of estimating the abundance of rare, clustered populations, adaptive sampling designs are rapidly gaining prominence in the natural and social sciences as well as in other fields with inherently difficult sampling situations. In marked contrast to conventional sampling designs, in which the entire sample of units to be observed is fixed prior to the survey, adaptive sampling strategies allow for increased sampling intensity depending upon observations made during the survey. For example, in a survey to assess the abundance of a rare animal species, neighboring sites may be added to the sample whenever the species is encountered during the survey. In an epidemiological survey of a contagious or genetically linked disease, sampling intensity may be increased whenever prevalence of the disease is encountered. Written by two acknowledged experts in this emerging field, this book offers researchers their first comprehensive introduction to adaptive sampling. An ideal reference for statisticians conducting research in survey designs and spatial statistics as well as researchers working in the environmental, ecological, public health, and biomedical sciences. Adaptive Sampling: Provides a comprehensive, fully integrated introduction to adaptive sampling theory and practice Describes recent research findings Introduces readers to a wide range of adaptive sampling strategies and techniques Includes numerous real-world examples from environmental pollution studies, surveys of rare animal and plant species, studies of contagious diseases, marketing surveys, mineral and fossil-fuel assessments, and more
Download or read book The Stikine River written by Alaska Geographic Society and published by Graphic Arts Books. This book was released on 1979-01-01 with total page 93 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alaska Geographic is an award-winning series that presents the people, places, and wonders of Alaska to the world. Over the past 30 years, Alaska Geographic has earned its reputation as the publication for those who love Alaska. The series boasts more than 100 books to date, featuring communities from Barrow to Ketchikan, animals from bears to dinosaurs, history from the Russian explorers to today, and natural phenomena from the aurora to glaciers. Written by leading experts in their fields, these books are illustrated throughout with world-class photography and include colorful maps for reference.
Download or read book The Firecracker Boys written by Dan O'Neill and published by Basic Books. This book was released on 2015-06-23 with total page 450 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1958, Edward Teller, father of the H-bomb, unveiled his plan to detonate six nuclear bombs off the Alaskan coast to create a new harbor. However, the plan was blocked by a handful of Eskimos and biologists who succeeded in preventing massive nuclear devastation potentially far greater than that of the Chernobyl blast. The Firecracker Boys is a story of the U.S. government's arrogance and deception, and the brave people who fought against it-launching America's environmental movement. As one of Alaska's most prominent authors, Dan O'Neill brings to these pages his love of Alaska's landscape, his skill as a nature and science writer, and his determination to expose one of the most shocking chapters of the Nuclear Age.
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 Arctic Voices written by Subhankar Banerjee and published by Seven Stories Press. This book was released on 2012-07-03 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: "One of the great strengths of Arctic Voices is that it shows how Alaska and the Arctic are tied to the places where most of us live. In this impassioned book, Banerjee shows a situation so serious that it has created a movement, where 'voices of resistance are gathering, are getting louder and louder.' May his heartfelt efforts magnify them. The climate changes that are coming have hit soon and hard in the Arctic, and their consequences may be starkest there."–Ian Frazier, The New York Review of Books A pristine environment of ecological richness and biodiversity. Home to generations of indigenous people for thousands of years. The location of vast quantities of oil, natural gas and coal. Largely uninhabited and long at the margins of global affairs, in the last decade Arctic Alaska has quickly become the most contested land in recent US history. World-renowned photographer, writer, and activist Subhankar Banerjee brings together first-person narratives from more than thirty prominent activists, writers, and researchers who address issues of climate change, resource war, and human rights with stunning urgency and groundbreaking research. From Gwich'in activist Sarah James's impassioned appeal, "We Are the Ones Who Have Everything to Lose," during the UN Climate Conference in Copenhagen in 2009 to an original piece by acclaimed historian Dan O'Neill about his recent trips to the Yukon Flats fish camps, Arctic Voices is a window into a remarkable region. Other contributors include Seth Kantner, Velma Wallis, Nick Jans, Debbie Miller, Andri Snaer Magnason, George Schaller, George Archibald, Cindy Shogan, and Peter Matthiessen.
Download or read book Demography of Grizzly Bears in Relation to Hunting and Mining Development in Northwestern Alaska written by and published by . This book was released on 1993 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Last Giant of Beringia written by Daniel T. O'Neill and published by Westview Press. This book was released on 2004-05-11 with total page 254 pages. Available in PDF, EPUB and Kindle. Book excerpt: Chronicles the work of geologist Dave Hopkins, whose research solved the mystery of the existence of Beringia, the Bering Land Bridge.
Download or read book Keeping it Living written by Douglas Deur and published by University of Washington Press. This book was released on 2005 with total page 417 pages. Available in PDF, EPUB and Kindle. Book excerpt: Keeping It Living brings together some of the world'smost prominent specialists on Northwest Coast cultures to examinetraditional cultivation practices from Oregon to Southeast Alaska. Itexplores tobacco gardens among the Haida and Tlingit, managed camasplots among the Coast Salish of Puget Sound and the Strait of Georgia,estuarine root gardens along the central coast of British Columbia,wapato maintenance on the Columbia and Fraser Rivers, and tended berryplots up and down the entire coast. With contributions from a host of experts, Native American scholarsand elders, Keeping It Living documents practices ofmanipulating plants and their environments in ways that enhancedculturally preferred plants and plant communities. It describes howindigenous peoples of this region used and cared for over 300 speciesof plants, from the lofty red cedar to diminutive plants of backwaterbogs.
Download or read book Time and Complexity in Historical Ecology written by William Balée and published by Columbia University Press. This book was released on 2006-06-22 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection of studies by anthropologists, botanists, ecologists, and biologists is an important contribution to the emerging field of historical ecology. The book combines cutting-edge research with new perspectives to emphasize the close relationship between humans and their natural environment. Contributors examine how alterations in the natural world mirror human cultures, societies, and languages. Treating the landscape like a text, these researchers decipher patterns and meaning in the Ecuadorian Andes, Amazonia, the desert coast of Peru, and other regions in the neotropics. They show how local peoples have changed the landscape over time to fit their needs by managing and modifying species diversity, enhancing landscape heterogeneity, and controlling ecological disturbance. In turn, the environment itself becomes a form of architecture rich with historical and archaeological significance. Time and Complexity in Historical Ecology explores thousands of years of ecological history while also addressing important contemporary issues, such as biodiversity and genetic variation and change. Engagingly written and expertly researched, this book introduces and exemplifies a unique method for better understanding the link between humans and the biosphere.
Download or read book Dear Chairwoman written by Syvliane Grant and published by . This book was released on 2021-04-09 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: DEDICATED TO THE NEXT GENERATION OF WOMEN BOARD LEADERSIn 2018, California passed a senate bill (SB 826) to require publicly held companies headquartered in CA to have at least one woman on their board by 2020. In 2020, Nasdaq proposed a mandate that would require listed companies to have at least two diverse board members with one member who identifies as female. Initiatives like these are helping advance gender parity on boards in many regions, not just the U.S. In late 2020, women held 22.6% of the board seats on the Russell 3000 for the first time, a 6.5 point jump over the past 4 years.Zooming out to the global scale, the picture is similarly improving. In 2020, about 23% of board seats globally were held by women, compared to 20% in 2018. Yet...at the time of this writing, 10% of large global companies do not have a single woman on their board. And the percent of women who chair boards is dramatically smaller. Among the largest 500 public U.S. companies by revenue the share of women who chaired boards remained stagnant at 7.4%. Notably, of those women who chair boards, few of them use the term Chairwoman in their bios or LinkedIn profiles-opting for monikers Chairman, or Board Chair, or occasionally Chairperson. This book features the extraordinary voices and stories of women leaders from around the world who have trailblazed to the board room, as letters to the next generation of women in business and government. With the salutation "Dear Chairwoman," these letters are infused with the energy to inspire young women to both pursue board governance early, and to claim the 'Chairwoman' title in taking the senior-most seat in the Board Room.
Download or read book Developing a Research and Restoration Plan for Arctic Yukon Kuskokwim Western Alaska Salmon written by National Research Council and published by National Academies Press. This book was released on 2005-07-06 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: Recent declines in the abundance of salmon in the Arctic-Yukon-Kuskokwim (AYK) region of western Alaska have created hardships for the people and communities who depend on this resource. In 2002, the AYK Sustainable Salmon Initiative (SSI) was created to undertake research to understand the reasons for this decline and to help support sustainable management in the region. This report makes recommendations for developing the research that the AYK SSI science plan should be based on, and relates the development of a restoration plan to the results of that research.
Download or read book Investigation of the Salmon Fisheries of the Yukon River written by Charles Henry Gilbert and published by . This book was released on 1921 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fall Chinook Oncorhynchus Tshawytscha written by Jim Waldvogel and published by . This book was released on 2006 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Age analysis for 22 years (1980 excluded) showed that the overall percentages for female spawners was 53% (4-year olds), 38% (3-year olds), and 9% (5-year olds). The age composition of male spawners showed a high degree of variability throughout the study. Male chinook of age 2, 3 and 4 were dominant annually, but 5- and 6- year old fish were present in most spawning seasons. All chinook carcasses from which scales were collected were also measured for length (over 120 samples in 22 years). Decreases in mean length were documented for all age classes for each of the El Nino episodes that occurred during the study (1982-1984; 1992-1993; 1997-1998). The decreases in mean length appeared to carry forward for each cohort's age class. The total number of chinook redds was tabulated by counting "fresh" redds during weekly spawning surveys. The mean number of redds was 117 for the 23-year period with a mean of 0.9 redds per adult salmon or 1.8 redds per female.
Download or read book Review of the Draft Research and Restoration Plan for Arctic Yukon Kuskokwim Western Alaska Salmon written by National Research Council and published by National Academies Press. This book was released on 2006-02-27 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: Declines in the abundance of salmon in the Arctic-Yukon-Kuskokwim (AYK) region of western Alaska in the late 1990s and early 2000s created hardships for the people and communities who depend on this resource. Based on recommendations from a 2004 National Academies report, the AYK Sustainable Salmon Initiative (SSI) developed a research and restoration plan to help understand the reasons for this decline and to help support sustainable management in the region. This report reviews the draft plan, recommending some clarification, shortening, and other improvements, with a better focus on the relationship between the underlying intellectual model and the research questions, and a clearer discussion of local and traditional knowledge and capacity building.
Download or read book Preliminary Forecasts and Projections for 1990 Alaska Salmon Fisheries written by Harold J. Geiger and published by . This book was released on 1990 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
