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The Colonization Mechanism Of Pink Salmon Populations In Glacier Bay Alaska Based On Genetic Data
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Book Synopsis The Colonization Mechanism of Pink Salmon Populations in Glacier Bay, Alaska, Based on Genetic Data by : Christine M. Kondzela
Download or read book The Colonization Mechanism of Pink Salmon Populations in Glacier Bay, Alaska, Based on Genetic Data written by Christine M. Kondzela and published by . This book was released on 2010 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Following retreat of the last glacial advance in the early 1700s, pink salmon Oncorhynchus gorbuscha colonized many watersheds in Glacier Bay, Alaska. Streams in the lower Bay were populated first, and colonization proceeded up the Bay during the last 200 years. The objective of this study was to use analyses of genetic data-microsatellite and allozyme loci, and mitochondrial DNA haplotypes--to elucidate the colonization mechanism. The even- and odd-year broodlines served as replicate experiments; the mechanisms of colonization for the two broodlines were similar in most respects. The population genetic structure, based on allele/haplotype frequencies and genetic diversity (FsT), suggested that in general, deglaciated streams were populated by colonists from nearby locations. The populations in lower Glacier Bay were likely established by colonists from populations outside Glacier Bay. In turn, the lower Bay populations contributed colonists to populations farther up the Bay, which subsequently provided colonists to the most recently deglaciated locations in the upper Bay, although in the even-year there appeared to be some contribution to the youngest populations from older Populations, outside of or in lower Glacier Bay. Few genetically divergent donor sources contributed colonists based on the limited linkage disequilibrium, higher relatedness, and lower allelic diversity within Glacier Bay populations. The number of fish involved in initial colonization was not large, based on slightly reduced genetic diversity within Glacier Bay, but minimal founder effect signals precluded very small numbers of fish as well. Most of the genetic variation appeared early in the formation of populations and effective population size estimates were >100 fish in every population. Some gene flow after initial colonization is supported by the increased allelic diversity and decline in relatedness with population age, but heterogeneity within Glacier Bay suggested that gene flow must be limited among some populations. Colonization of the youngest streams coincided with the historically high abundance of pink salmon in Southeast Alaska during the 1990s; I speculate that the rapid expansion in the size of these Populations subsequent to this study was the result of high survival rather than extensive gene flow"--Leaf iii.
Book Synopsis Environmental, Biological, and Genetic Factors Influencing Local Adaptation of Pink Salmon (Oncorhynchus Gorbuscha) in Auke Creek, Alaska by : Christopher V. Manhard
Download or read book Environmental, Biological, and Genetic Factors Influencing Local Adaptation of Pink Salmon (Oncorhynchus Gorbuscha) in Auke Creek, Alaska written by Christopher V. Manhard and published by . This book was released on 2016 with total page 137 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pacific salmon form distinct, locally adapted populations because of the spatial and temporal precision with which they home to their natal streams. Local adaptation is recognized as an important component underlying the productivity and sustainability of salmonid populations, yet there remains uncertainty of the scale at which it occurs. This uncertainty was addressed by analysis of demographic, genetic, and experimental data collected from seasonally structured brood lines of Pink Salmon that spawn in Auke Creek, Alaska. An extensive background of research on this system has indicated that the timing of the adult and juvenile migrations is closely aligned with fitness and productivity in this stream; this background provided a framework for synthesizing the results of the analyses to address these questions: (1) What ecological factors influence productivity of the freshwater and marine life history stages; (2) Do these factors suggest a mechanism for evolution of migration time; (3) What are the consequences of disrupting fine-scale local adaptation of migration time? Freshwater productivity appeared to be influenced primarily by competition for spawning habitat, rather than variability in environmental conditions. Marine productivity, conversely, was associated with physical processes that influence survival of juveniles in the nearshore environment. Consistent with these findings, genetic evolution of earlier migration time, which was observed in both adults and juveniles over two generations, appeared to be driven by earlier vernal warming of the nearshore environment. Despite these environmental changes and resulting selection against late migrating fish, recruitment to Auke Creek has remained stable, thereby indicating that seasonal structure of migration time has supported sustained productivity in a changing climate. Experimental relaxation of natural barriers to gene flow that maintain the seasonal structure resulted in intermediate adult migration times in two generations of hybrid fish. These patterns were consistent with an additive genetic basis for migration time and suggest that ecological outbreeding depression is a post-zygotic mechanism that maintains adaptive variation of migration time in Auke Creek. Collectively, these results provide evidence that fine-scale local adaptation can enhance productivity of salmonid populations while providing resilience to climate change.
Book Synopsis Preliminary Report on Genetic Diversity of Southern Southeast Alaska Pink Salmon Populations by : Anthony John Gharrett
Download or read book Preliminary Report on Genetic Diversity of Southern Southeast Alaska Pink Salmon Populations written by Anthony John Gharrett and published by . This book was released on 1990 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Genetic Characterization of Prince William Sound Pink Salmon Populations by : Jim Seeb
Download or read book Genetic Characterization of Prince William Sound Pink Salmon Populations written by Jim Seeb and published by . This book was released on 1977 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt: Electrophoretic examination of 37 groups of pink salmon sampled from 15 Prince William Sound streams revealed genetically distinguishable subpopulations isolated temporarily and spatially within streams.
Book Synopsis Microevolution Rate, Pattern, Process by : Andrew P. Hendry
Download or read book Microevolution Rate, Pattern, Process written by Andrew P. Hendry and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: From guppies to Galapagos finches and from adaptive landscapes to haldanes, this compilation of contributed works provides reviews, perspectives, theoretical models, statistical developments, and empirical demonstrations exploring the tempo and mode of microevolution on contemporary to geological time scales. New developments, and reviews, of classic and novel empirical systems demonstrate the strength and diversity of evolutionary processes producing biodiversity within species. Perspectives and theoretical insights expand these empirical observations to explore patterns and mechanisms of microevolution, methods for its quantification, and implications for the evolution of biodiversity on other scales. This diverse assemblage of manuscripts is aimed at professionals, graduate students, and advanced undergraduates who desire a timely synthesis of current knowledge, an illustration of exciting new directions, and a springboard for future investigations in the study of microevolution in the wild.
Book Synopsis Proceedings of the Second Glacier Bay Science Symposium by : Alexander M. Milner
Download or read book Proceedings of the Second Glacier Bay Science Symposium written by Alexander M. Milner and published by . This book was released on 1990 with total page 186 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nanutset Ch'u Q'udi Gu by : Karen K. Gaul
Download or read book Nanutset Ch'u Q'udi Gu written by Karen K. Gaul and published by . This book was released on 2007 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Climate Change and Indigenous Peoples in the United States by : Julie Koppel Maldonado
Download or read book Climate Change and Indigenous Peoples in the United States written by Julie Koppel Maldonado and published by Springer. This book was released on 2014-04-05 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: With a long history and deep connection to the Earth’s resources, indigenous peoples have an intimate understanding and ability to observe the impacts linked to climate change. Traditional ecological knowledge and tribal experience play a key role in developing future scientific solutions for adaptation to the impacts. The book explores climate-related issues for indigenous communities in the United States, including loss of traditional knowledge, forests and ecosystems, food security and traditional foods, as well as water, Arctic sea ice loss, permafrost thaw and relocation. The book also highlights how tribal communities and programs are responding to the changing environments. Fifty authors from tribal communities, academia, government agencies and NGOs contributed to the book. Previously published in Climatic Change, Volume 120, Issue 3, 2013.
Book Synopsis Fishes of the Salish Sea by : Theodore W. Pietsch
Download or read book Fishes of the Salish Sea written by Theodore W. Pietsch and published by . This book was released on 2019 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fishes of the Salish Sea is the definitive guide to the identification and history of the marine and anadromous fishes of Puget Sound and the Straits of Georgia and Juan de Fuca. This comprehensive three-volume set, featuring striking illustrations of the Salish Sea's 260 fish species by noted illustrator Joseph Tomelleri, details the ecology and life history of each species and recounts the region's rich heritage of marine research and exploration. Beginning with jawless hagfishes and lampreys and ending with the distinctive Ocean Sunfish, leading scientists Theodore Wells Pietsch and James Orr present the taxa in phylogenetic order, based on classifications that reflect the most current scientific knowledge. Illustrated taxonomic keys facilitate fast and accurate species identification. These in-depth, thoroughly documented, and yet accessible volumes will prove invaluable to marine biologists and ecologists, natural resource managers, anglers, divers, students, and all who want to learn about, marvel over, and preserve the vibrant diversity of Salish Sea marine life. Comprehensive accounts of 260 fish species Brilliant color plates of all treated species Illustrated taxonomic keys for easy species identification In-depth history of Salish Sea research and exploration
Book Synopsis A History of Sockeye Salmon Research, Karluk River System, Alaska, 1880-2010 by : Richard Gard
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:
Author :Food and Agriculture Organization of the United Nations Publisher :Food & Agriculture Org. ISBN 13 :9251306079 Total Pages :654 pages Book Rating :4.2/5 (513 download)
Book Synopsis Impacts of climate change on fisheries and aquaculture by : Food and Agriculture Organization of the United Nations
Download or read book Impacts of climate change on fisheries and aquaculture written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2019-01-06 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report indicates that climate change will significantly affect the availability and trade of fish products, especially for those countries most dependent on the sector, and calls for effective adaptation and mitigation actions encompassing food production.
Book Synopsis Geomorphic Processes and Riverine Habitat by : American Geophysical Union. Meeting
Download or read book Geomorphic Processes and Riverine Habitat written by American Geophysical Union. Meeting and published by American Geophysical Union. This book was released on 2001-01-09 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt: Published by the American Geophysical Union as part of the Water Science and Application Series, Volume 4. Declines in fish populations and the loss of riverine habitat from human demands on the environment intensify year by year. By considering why and how, and by proposing restoration methods and mitigation strategies, scientists respond forcefully to improve disturbed ecosystems. Geomorphic Processes and Riverine Habitat presents results from recent research in fluvial geomorphology related to the assessment and characterization of riverine and riparian habitat, and the response of biota to changes in their environment. As our understanding of formative processes and how humans occupy and shape the environment grows, we can minimize our impact while enhancing our ability to restore and rehabilitate degraded river systems. For scientists, researchers and students of riverine habitat.
Book Synopsis North American Rodents by : David J. Hafner
Download or read book North American Rodents written by David J. Hafner and published by IUCN. This book was released on 1998 with total page 188 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first comprehensive treatment of North American rodents of conservation concern. This action plan summarizes the rodent fauna of North America and provides available information on every rodent taxon that has been considered to be of conservation concern by state, provincial and private conservation agencies and regional experts. It is hoped that the survey provided in this action plan will serve as a common ground for all these parties in drawing up conservation strategies for rodents.
Book Synopsis Primates and Cetaceans by : Juichi Yamagiwa
Download or read book Primates and Cetaceans written by Juichi Yamagiwa and published by Springer Science & Business Media. This book was released on 2013-11-20 with total page 445 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, the editors present a view of the socioecology of primates and cetaceans in a comparative perspective to elucidate the social evolution of highly intellectual mammals in terrestrial and aquatic environments. Despite obvious differences in morphology and eco-physiology, there are many cases of comparable, sometimes strikingly similar patterns of sociobehavioral complexity. A number of long-term field studies have accumulated a substantial amount of data on the life history of various taxa, foraging ecology, social and sexual relationships, demography, and various patterns of behavior: from dynamic fission–fusion to long-term stable societies; from male-bonded to bisexually bonded to matrilineal groups. Primatologists and cetologists have come together to provide four evolutionary themes: (1) social complexity and behavioral plasticity, (2) life history strategies and social evolution, (3) the interface between behavior, demography, and conservation, and (4) selected topics in comparative behavior. These comparisons of taxa that are evolutionarily distant but live in comparable complex sociocognitive environments boost our appreciation of their sophisticated mammalian societies and can advance our understanding of the ecological factors that have shaped their social evolution. This knowledge also facilitates a better understanding of the day-to-day challenges these animals face in the human-dominated world and may improve the capacity and effectiveness of our conservation efforts.
Book Synopsis Knowing Yellowstone by : Jerry Johnson
Download or read book Knowing Yellowstone written by Jerry Johnson and published by Rowman & Littlefield. This book was released on 2010-06-16 with total page 185 pages. Available in PDF, EPUB and Kindle. Book excerpt: Visitors to Yellowstone National Park are drawn to the spectacular scenery, unique thermal features, and the large numbers of wild animals easily observed in their natural habitat. The thoughtful visitor to the park cannot help but be captivated by the unparalleled breadth of scientific knowledge needed to understand the intricate interrelationships that make up the yellowstone landscape. Knowing Yellowstone explores how scientists discover what they know about America's first national park and the surrounding lands. The chapter authors are scientists who represent the best of their fields of study. The science they describe is leading the way to our understanding of complex ecosystems worldwide.
Book Synopsis Salmon in California by : Joe Holmberg
Download or read book Salmon in California written by Joe Holmberg and published by . This book was released on 1972 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Katherine Johnson Ringsmuth Publisher :Department of Interior National Park Service ISBN 13 : Total Pages :368 pages Book Rating :4.3/5 (121 download)
Book Synopsis At the Heart of Katmai by : Katherine Johnson Ringsmuth
Download or read book At the Heart of Katmai written by Katherine Johnson Ringsmuth and published by Department of Interior National Park Service. This book was released on 2013 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt:
