نتائج البحث

MBRLSearchResults

mbrl.module.common.modules.added.book.to.shelf
تم إضافة الكتاب إلى الرف الخاص بك!
عرض الكتب الموجودة على الرف الخاص بك .
وجه الفتاة! هناك خطأ ما.
وجه الفتاة! هناك خطأ ما.
أثناء محاولة إضافة العنوان إلى الرف ، حدث خطأ ما :( يرجى إعادة المحاولة لاحقًا!
هل أنت متأكد أنك تريد إزالة الكتاب من الرف؟
{{itemTitle}}
{{itemTitle}}
وجه الفتاة! هناك خطأ ما.
وجه الفتاة! هناك خطأ ما.
أثناء محاولة إزالة العنوان من الرف ، حدث خطأ ما :( يرجى إعادة المحاولة لاحقًا!
    منجز
    مرشحات
    إعادة تعيين
  • الضبط
      الضبط
      امسح الكل
      الضبط
  • مُحَكَّمة
      مُحَكَّمة
      امسح الكل
      مُحَكَّمة
  • السلسلة
      السلسلة
      امسح الكل
      السلسلة
  • مستوى القراءة
      مستوى القراءة
      امسح الكل
      مستوى القراءة
  • السنة
      السنة
      امسح الكل
      من:
      -
      إلى:
  • المزيد من المرشحات
      المزيد من المرشحات
      امسح الكل
      المزيد من المرشحات
      نوع المحتوى
    • نوع العنصر
    • لديه النص الكامل
    • الموضوع
    • الناشر
    • المصدر
    • المُهدي
    • اللغة
    • مكان النشر
    • المؤلفين
    • الموقع
83,657 نتائج ل "Fisheries management"
صنف حسب:
All the fish in the sea
Between 1949 and 1955, the State Department pushed for an international fisheries policy grounded in maximum sustainable yield (MSY). The concept is based on a confidence that scientists can predict, theoretically, the largest catch that can be taken from a species' stock over an indefinite period. And while it was modified in 1996 with passage of the Sustained Fisheries Act, MSY is still at the heart of modern American fisheries management. As fish populations continue to crash, however, it is clear that MSY is itself not sustainable. Indeed, the concept has been widely criticized by scientists for ignoring several key factors in fisheries management and has led to the devastating collapse of many fisheries.Carmel Finley reveals that the fallibility of MSY lies at its very inception—as a tool of government rather than science. The foundational doctrine of MSY emerged at a time when the US government was using science to promote and transfer Western knowledge and technology, and to ensure that American ships and planes would have free passage through the world's seas and skies. Finley charts the history of US fisheries science using MSY as her focus, and in particular its application to halibut, tuna, and salmon fisheries. Fish populations the world over are threatened, and All the Fish in the Sea helps to sound warnings of the effect of any management policies divested from science itself.
Beyond the tragedy in global fisheries
The oceans are heavily overfished, and the greatest challenges to effective fisheries management are not technical but political and economic. In this book, D. G. Webster describes how the political economy of fisheries has evolved and highlights patterns that are linked to sustainable transitions in specific fisheries. Grounded in the concept of responsive governance, Webster's interdisciplinary analysis goes beyond the conventional view of the \"tragedy of the commons.\" Using her Action Cycle/Structural Context framework, she maps long-running patterns that cycle between depletion and rebuilding in a process that she terms the management treadmill. Webster documents the management treadmill in settings that range from small coastal fishing communities to international fisheries that span entire oceans. She identifies the profit disconnect, in which economic incentives are out of sync with sustainable use, and the power disconnect, in which those who experience the costs of overexploitation are politically marginalized. She examines how these disconnects shaped the economics of expansion and documents how political systems failed to prevent related cycles of serial resource depletion. Webster also traces the increasing use of restrictive management in response to worsening fisheries crises and the emergence of new, noncommercial interests that demand greater management but also generate substantial conflict. She finds that the management treadmill is speeding up with population growth and economic development, and so concludes that sustainable fisheries can only exist within a sustainable global economic system.
Effective fisheries management instrumental in improving fish stock status
Marine fish stocks are an important part of the world food system and are particularly important for many of the poorest people of the world. Most existing analyses suggest overfishing is increasing, and there is widespread concern that fish stocks are decreasing throughout most of the world. We assembled trends in abundance and harvest rate of stocks that are scientifically assessed, constituting half of the reported global marine fish catch. For these stocks, on average, abundance is increasing and is at proposed target levels. Compared with regions that are intensively managed, regions with less-developed fisheries management have, on average, 3-fold greater harvest rates and half the abundance as assessed stocks. Available evidence suggests that the regions without assessments of abundance have little fisheries management, and stocks are in poor shape. Increased application of area-appropriate fisheries science recommendations and management tools are still needed for sustaining fisheries in places where they are lacking.
Saving global fisheries: reducing fishing capacity to promote sustainability
The Earth's oceans are overfished, despite more than fifty years of cooperation among the world's fishing nations. There are too many boats chasing too few fish. In Saving Global Fisheries, J. Samuel Barkin and Elizabeth DeSombre analyze the problem of overfishing and offer a provocative proposal for a global regulatory and policy approach.Existing patterns of international fisheries management try to limit the number of fish that can be caught while governments simultaneously subsidize increased fishing capacity, focusing on fisheries as an industry to be developed rather than on fish as a resource to be conserved. Regionally based international management means that protection in one area simply shifts fishing efforts to other species or regions. Barkin and DeSombre argue that global rather than regional regulation is necessary for successful fisheries management and emphasize the need to reduce subsidies. They propose an international system of individual transferable quotas that would give holders of permits an interest in the long-term health of fish stocks and help create a sustainable level of fishing capacity globally.
Ecosystem‐Based Fisheries Management for Social–Ecological Systems: Renewing the Focus in the United States with Next Generation Fishery Ecosystem Plans
Resource managers and policy makers have long recognized the importance of considering fisheries in the context of ecosystems; yet, movement towards widespread Ecosystem‐based Fisheries Management (EBFM) has been slow. A conceptual reframing of fisheries management is occurring globally, which envisions fisheries as systems with interacting biophysical and human subsystems. This broader view, along with a process for decision making, can facilitate implementation of EBFM. A pathway to achieve these broadened objectives of EBFM in the United States is a Fishery Ecosystem Plan (FEP). The first generation of FEPs was conceived in the late 1990s as voluntary guidance documents that Regional Fishery Management Councils could adopt to develop and guide their ecosystem‐based fisheries management decisions, but few of these FEPs took concrete steps to implement EBFM. Here, we emphasize the need for a new generation of FEPs that provide practical mechanisms for putting EBFM into practice in the United States. We argue that next‐generation FEPs can balance environmental, economic, and social objectives—the triple bottom line—to improve long‐term planning for fishery systems.
Marine resources, climate change and international management regimes
\"This book is available as open access through the Bloomsbury Open Access programme and is available on www.bloomsburycollections.com. When changes in the oceans impact fisheries, are states able to handle the management of these changes amongst themselves, or are they locked in patterns and mechanisms that prove inflexible and inefficient in dealing with rapid external environmental changes? This volume explores how international institutions and regimes set up to manage marine resources - predominantly fisheries - are adapting to the effects of climate change and the related consequences for the geographic distribution of these resources. In the Barents Sea, cod is expanding north-eastwards, while in the Norwegian Sea significant changes in abundance, distribution and migration patterns can be observed in pelagic species such as mackerel. In the Southern Ocean, the combined effect of increasing temperatures with associated declines in sea ice, ocean acidification and changes in circulation is likely to affect the geographical distribution of krill. These developments put established international management regimes under pressure. In this interdisciplinary research volume, world-leading marine biologists, international lawyers and political scientists join efforts to study the resilience of Arctic and Antarctic marine resource management institutions to large-scale shifts of major marine stocks\"-- Provided by publisher.
Evolving science of marine reserves: New developments and emerging research frontiers
The field of marine reserve science has matured greatly over the last decade, moving beyond studies of single reserves and beyond perspectives from single disciplines. This Special Feature exemplifies recent advances in marine reserve research, showing insights gained from synthetic studies of reserve networks, long-term changes within reserves, integration of social and ecological science research, and balance between reserve design for conservation as well as fishery and other commercial objectives. This rich body of research helps to inform conservation planning for marine ecosystems but also poses new challenges for further study, including how to best design integrated fisheries management and conservation systems, how to effectively evaluate the performance of entire reserve networks, and how to examine the complex coupling between ecological and socioeconomic responses to reserve networks.