Download or read book Forage Fishes in Marine Ecosystems written by Alaska Sea Grant College Program and published by Alaska Sea Grant College Program. This book was released on 1997 with total page 860 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forage fishes are of particular concern in Alaska because lack of these prey fishes is most likely the cause of a dramatic decline in Steller sea lions, fur seals, and seabirds in the past 20 years. This book, the proceedings of the 1996 International Symposium on the Role of Forage Fishes in Marine Ecosystems, is organized around several themes: Fish biology, their role as predators and prey, causes of population fluctuations, assessment methods, and management. Fifty-six research contributions are included. Selected as an outstanding publication by the Journal of Government Communication.
Download or read book Forage Fishes in Marine Ecosystems written by Brenda Baxter and published by . This book was released on 1996 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book International Symposium on the Role of Forage Fishes in Marine Ecosystems written by and published by . This book was released on 1996 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Contributions of Forage Fish Species to Marine Ecosystems and Anthropogenic Threats to Their Conservation written by Konstantine John Rountos and published by . This book was released on 2014 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Forage Fish written by Jacqueline Alder and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fisheries targeting small-to-medium pelagic, so-called forage fish, impact on human food security and marine ecosystems. Because their operations are shrouded by the myth that forage fish are unsuitable for human consumption, the role of these fisheries in intensive food production is not well understood or appreciated. Thus, although they account for over 30% of global landings of marine fish annually, our knowledge of how these levels of removal impact on marine ecosystems is limited. Nevertheless, there is considerable scope for policy makers to change the current management of these fisheries and to enhance their contribution to food security and economic development. Industry and consumers also have an important role in finding the balance between these fisheries contributing to human food security and poverty alleviation on the one hand, and sustaining intensive animal food production systems, especially aquaculture, on the other.
Download or read book Responsible Fisheries in the Marine Ecosystem written by Michael Sinclair and published by CABI. This book was released on 2014-05-28 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses ecological and environmental issues associated with responsible and sustainable marine fisheries. It includes 22 chapters and has been developed from the Conference on Responsible Fisheries in the Marine Ecosystem held in Iceland in October 2001. Contents include: a global overview of marine capture fisheries; legal protection for marine ecosystems; dynamics of marine ecosystems; the role of man in marine ecosystems; and incorporating ecosystem considerations in fisheries management. The book has a subject index.
Download or read book Ecosystem Based Fisheries Management written by Jason Link and published by Cambridge University Press. This book was released on 2010-10-07 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Responsible fisheries management is of increasing interest to the scientific community, resource managers, policy makers, stakeholders and the general public. Focusing solely on managing one species of fish stock at a time has become less of a viable option in addressing the problem. Incorporating more holistic considerations into fisheries management by addressing the trade-offs among the range of issues involved, such as ecological principles, legal mandates and the interests of stakeholders, will hopefully challenge and shift the perception that doing ecosystem-based fisheries management is unfeasible. Demonstrating that EBFM is in fact feasible will have widespread impact, both in US and international waters. Using case studies, underlying philosophies and analytical approaches, this book brings together a range of interdisciplinary topics surrounding EBFM and considers these simultaneously, with an aim to provide tools for successful implementation and to further the debate on EBFM, ultimately hoping to foster enhanced living marine resource management.
Download or read book Systematic Parasitology written by Dr. Sheila Willmott and published by Springer. This book was released on 1981-01-01 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Little Fish Big Impact written by Lenfest Forage Fish Task Force and published by . This book was released on 2012 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: With support from the Lenfest Ocean Program, the Institute for Ocean Conservation Science at Stony Brook University convened the Lenfest Forage Fish Task Force (Task Force), a panel of thirteen preeminent marine and fisheries scientists from around the world. The primary purpose of the Task Force was to provide practical, science-based advice for the management of species known as forage fish, because of their crucial role in marine ecosystems. Over the last three years, the Task Force undertook a comprehensive examination of the science and management of forage fish populations through workshops, site visits, case studies, and quantitative modeling of marine food webs. On April 3, 2012, the Task Force released their findings in the report, "Little Fish, Big Impact."--Publisher description.
Download or read book The Ecosystem Approach to Fisheries written by Gabriella Bianchi and published by CABI. This book was released on 2008 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Sustainable use of aquatic ecosystems is high on regional, national and international agendas and central to the implementation of international agreements on biological diversity, responsible fisheries and fish stock management. Since 2001, when political commitments were made to implement the ecosystem approach, countries have begun to incorporate ecosystem considerations into their fisheries management and have met with varied success." "The Ecosystem Approach to Fisheries covers both theoretical andapplied aspects of sustainable management, with a particular emphasis on reviewing concepts and addressing implementation issues in the form of case studies from around the world. Personal experiences are considered from diverse backgrounds and discuss the constraints encountered, strategies identified and best practices to facilitate further implementation."--BOOK JACKET.
Download or read book Conservation and Ecology of Marine Forage Fishes written by U.S. Department of the Interior and published by CreateSpace. This book was released on 2014-03-30 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Locally and globally, there is growing recognition of the critical roles that herring, smelt, sand lance, eulachon, and other forage fishes play in marine ecosystems. Scientific and resource management entities throughout the Salish Sea, agree that extensive information gaps exist, both in basic biological knowledge and parameters critical to fishery management. Communication and collaboration among researchers also is inadequate.
Download or read book Implications of Demographic Diversity for Forage Fish Their Fisheries and Ecosystems written by Margaret Clark Siple and published by . This book was released on 2017 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Forage fish play a key role in marine ecosystems and fisheries worldwide. They are highly productive, and undergo dramatic fluctuations in productivity, which interact with fishing pressure and spatial dynamics to generate population variability. The mechanisms and demographic processes behind this variability are poorly understood, creating a challenge for fishery managers. In this dissertation, I address the implications of demographic diversity for forage fish ecology and management. I investigate demographic diversity in space (Chapter 1) in space and time (Chapter 2), and among different forage species (Chapters 3 and 4). In the first chapter, I demonstrate that spatial diversity in a largely unfished forage fish population (Puget Sound Pacific herring; Clupea pallasii) can generate portfolio effects, which stabilize their availability as prey. In the second chapter, I build a hierarchical model to address the potential processes behind these portfolio effects, distinguishing temporal variation in mortality from spatial differences, and demonstrating that adult mortality has led to age truncation and recruitment-dominated dynamics. In the third chapter, I develop an age-structured population model and use a management strategy evaluation framework to show that demographic diversity among forage fish species (specifically, for sardine, anchovy, and menhaden-like forage species) affects management outcomes and tradeoffs. In the final chapter, I use a time series approach to investigate asynchronous dynamics in sardine (Sardinops spp.) and anchovy (Engraulis spp.), and show that although these two species are often viewed as alternating members of the forage fish guild, sardine and anchovy alone do not compose a forage portfolio that buffers fisheries and food webs from dramatic shifts in productivity. These results demonstrate the rarity of asynchronous dynamics and the importance of considering, but not relying upon, demographic diversity in forage fish populations.
Download or read book Whales Whaling and Ocean Ecosystems written by James A. Estes and published by Univ of California Press. This book was released on 2006 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A must read for anyone interested in the ecology of whales, this timely and creative volume is sure to stimulate new research for years to come."—Annalisa Berta, San Diego State University
Download or read book On the Multiple Uses of Forage Fish written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ecological Models and Data in R written by Benjamin M. Bolker and published by Princeton University Press. This book was released on 2008-07-21 with total page 408 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction and background; Exploratory data analysis and graphics; Deterministic functions for ecological modeling; Probability and stochastic distributions for ecological modeling; Stochatsic simulation and power analysis; Likelihood and all that; Optimization and all that; Likelihood examples; Standar statistics revisited; Modeling variance; Dynamic models.
Download or read book The Ecology of Marine Fishes written by Dr. Larry G. Allen and published by Univ of California Press. This book was released on 2006-02-15 with total page 1353 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine fishes have been intensively studied, and some of the fundamental ideas in the science of marine ecology have emerged from the body of knowledge derived from this diverse group of organisms. This unique, authoritative, and accessible reference, compiled by 35 luminary ecologists, evolutionary biologists, and ichthyologists, provides a synthesis and interpretation of the large, often daunting, body of information on the ecology of marine fishes. The focus is on the fauna of the eastern Pacific, especially the fishes of the California coast, a group among the most diverse and best studied of all marine ecosystems. A generously illustrated and comprehensive source of information, this volume will also be an important launching pad for future research and will shed new light on the study of marine fish ecology worldwide. The contributors touch on many fields in biology, including physiology, development, genetics, behavior, ecology, and evolution. The book includes sections on the history of research, both published and unpublished data, sections on collecting techniques, and references to important earlier studies.
Download or read book Environmental Drivers of the Abundance and Distribution of Forage Fishes on the Northeast US Shelf with a Particular Emphasis on Northern Sand Lance written by Justin Joseph Suca and published by . This book was released on 2021 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Small pelagic fishes, also termed forage fishes, represent a critical link between secondary production and myriad top predators in marine ecosystems, including the Northeast US shelf. In this dissertation, I analyze the drivers of forage fish distribution throughout the Northeast US shelf and the drivers of the abundance of the ecologically important northern sand lance. Chapter 2 examines the basic ecology of northern sand lance and uses these insights to identify mechanistic drivers of their abundance. I then explore different scenarios of these drivers to project sand lance abundance through the end of the 21st century, which appears precarious for adult sand lance unless current trajectories change. Chapter 3 analyzes the environmental drivers of the distribution of the six dominant, offshore forage fish species (northern sand lance, Atlantic herring, alewife, blueback herring, Atlantic mackerel, and Atlantic butterfish) on the Northeast US shelf to elucidate the role of environmental covariates in shelf occupancy by these taxa. The results of this chapter indicate shelf occupancy of butterfish and Atlantic mackerel are increasing through time while occupancy of sand lance is decreasing with time. The occurrence of most of these species is also moving deeper and northward with time. Chapter 4 assesses the source-sink dynamics of three sand lance hotspots through Lagrangian particle tracking models simulating larval sand lance transport. Connectivity varies among these hotspots with Georges Bank and Stellwagen Bank having notable retention while the Great South Channel relies on larvae from other hotspots. Retention on Stellwagen Bank and Georges Bank are linked to strong wind events during the larval period of sand lance. Collectively, this dissertation improves our understanding of the dynamics driving variability in the Northeast US shelf forage fish complex, particularly for northern sand lance.
