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Author: Alan Longhurst
Publisher: Cambridge University Press
ISBN: 1139489658
Category : Science
Languages : en
Pages :
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Book Description
Longhurst examines the proposition, central to fisheries science, that a fishery creates its own natural resource by the compensatory growth it induces in the fish, and that this is sustainable. His novel analysis of the reproductive ecology of bony fish of cooler seas offers some support for this, but a review of fisheries past and present confirms that sustainability is rarely achieved. The relatively open structure and strong variability of marine ecosystems is discussed in relation to the reliability of resources used by the industrial-level fishing that became globalised during the 20th century. This was associated with an extraordinary lack of regulation in most seas, and a widespread avoidance of regulation where it did exist. Sustained fisheries can only be expected where social conditions permit strict regulation and where politicians have no personal interest in outcomes despite current enthusiasm for ecosystem-based approaches or for transferable property rights.
Author: Alan Longhurst
Publisher: Cambridge University Press
ISBN: 1139489658
Category : Science
Languages : en
Pages :
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Book Description
Longhurst examines the proposition, central to fisheries science, that a fishery creates its own natural resource by the compensatory growth it induces in the fish, and that this is sustainable. His novel analysis of the reproductive ecology of bony fish of cooler seas offers some support for this, but a review of fisheries past and present confirms that sustainability is rarely achieved. The relatively open structure and strong variability of marine ecosystems is discussed in relation to the reliability of resources used by the industrial-level fishing that became globalised during the 20th century. This was associated with an extraordinary lack of regulation in most seas, and a widespread avoidance of regulation where it did exist. Sustained fisheries can only be expected where social conditions permit strict regulation and where politicians have no personal interest in outcomes despite current enthusiasm for ecosystem-based approaches or for transferable property rights.
Author: Poul Holm
Publisher: Earthscan
ISBN: 184977210X
Category : Business & Economics
Languages : en
Pages : 250
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Book Description
�[A] fascinating volume, which establishes marine environmental history as a major new discipline for academics as well as an exciting way to bring history and the natural world alive for the public.�ANDREW A. ROSENBERG, UNIVERSITY OF NEW HAMPSHIRE�The HMAP project is to be congratulated on this book, which presents vivid, evidence-based reconstructions of historical fisheries and the prolific ecosystems in which they were embedded.�TONY J. PITCHER, UNIVERSITY OF BRITISH COLUMBIA�The ingenuity and scholarship of the authors allow us to see ... how human societies have depended on and influenced marine living resources from periwinkles to whales.�MIKE SINCLAIR, BEDFORD INSTITUTE OF OCEANOGRAPHY�This book exalts the surprisingly fruitful marriage of historians and marine scientists - a union that has proven to be one of the most exciting developments in ocean research in recent years.�KATHERINE RICHARDSON, UNIVERSITY OF COPENHAGENFor centuries the seas appeared to offer limitless supplies of food and other resources, their waters a cornucopia never to be exhausted. In more recent times, episodes such as the extreme exploitation and subsequent collapse of cod populations of the Grand Banks off Newfoundland have highlighted the fallaciousness of this view. Yet all too often the lessons from our historical interactions with marine animals are little known, let alone learned.Based on research for the History of Marine Animal Populations project, Oceans Past examines the complex relationship our forebears had with the sea and the animals that inhabit it. It presents eleven studies ranging from fisheries and invasive species to offshore technology and the study of marine environmental history, bringing together the perspectives of historians and marine scientists to enhance understanding of ocean management of the past, present and future. In doing so, it also highlights the influence that changes in marine ecosystems have upon the politics, welfare and culture of human societies.
Author: F. Wulff
Publisher: Springer Science & Business Media
ISBN: 3642750176
Category : Science
Languages : en
Pages : 287
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Book Description
This book arises from a workshop on the application of network analysis to ecological flow networks. The purpose is to develop a new tool for comparison of ecosystems, paying particular attention to marine ecosystems. After a review of the methods and theory, data from a variety of marine habitats are analyzed and compared. Readers are shown how to calculate such properties as cycling index, average path length, flow diversity, indices of ecosystem growth and development and the origins and fates of particular flows. This is a highly original contribution to the growing field of ecosystem theory, in which attention is paid to the properties of the total, functioning ecosystem, rather than to the properties of individual organisms. New insights are provided into the workings of marine systems.
Author:
Publisher:
ISBN:
Category : Electronic journals
Languages : en
Pages : 492
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Book Description
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Publisher:
ISBN:
Category : Fish trade
Languages : en
Pages : 1562
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Book Description
Author: K. H. Mann
Publisher: John Wiley & Sons
ISBN: 1118687914
Category : Science
Languages : en
Pages : 512
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Book Description
The new edition of this widely respected text providescomprehensive and up-to-date coverage of the effects ofbiological–physical interactions in the oceans from themicroscopic to the global scale. considers the influence of physical forcing on biologicalprocesses in a wide range of marine habitats including coastalestuaries, shelf-break fronts, major ocean gyres, coral reefs,coastal upwelling areas, and the equatorial upwelling system investigates recent significant developments in this rapidlyadvancing field includes new research suggesting that long-term variability inthe global atmospheric circulation affects the circulation of oceanbasins, which in turn brings about major changes in fish stocks.This discovery opens up the exciting possibility of being able topredict major changes in global fish stocks written in an accessible, lucid style, this textbook isessential reading for upper-level undergraduates and graduatestudents studying marine ecology and biological oceanography
Author: Paul Harrison
Publisher: Wiley-Blackwell
ISBN: 9780632055661
Category : Technology & Engineering
Languages : en
Pages : 360
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Book Description
Why are some marine fish super abundant, attracting the attention of commercial fisheries? The full answer to this question can only be found by looking not just at biological aspects, such as reproduction and population dynamics, but also at the surrounding oceanic conditions, by analysing physical, chemical, geomorphological and other data. The sciences of fisheries and oceanography have in the past followed separate developments, but with the advent of the new science of fisheries oceanography, oceanographic information is being used to solve ecological problems in fisheries. Fisheries Oceanography provides thorough coverage of the major aspects of this important subject. The editors of this text book have drawn together an impressive list of contributing authors who offer vital insights into early life history, migration, genetic variability, climate change effects, models and the use of satellites in fisheries oceanography. An important aspect of the book is the inclusion of chapter commentaries by leading world authorities. The book concludes with an overview of problems facing fisheries, and how fisheries oceanography can be utilized to resolve some of these problems in the future. Fisheries workers, oceanographers and marine scientists will find a great deal of current information vital to their work in Fisheries Oceanography. As a text book it will be of great use to all those studying and researching marine fisheries, including BSc, MSc and other postgraduate students particularly in fisheries, fish biology, marine biology, oceanography and ecology.
Author: Kenneth Lee
Publisher: Springer Science & Business Media
ISBN: 1461400465
Category : Technology & Engineering
Languages : en
Pages : 601
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Book Description
A state-of-the-art review of scientific knowledge on the environmental risk of ocean discharge of produced water and advances in mitigation technologies. In offshore oil and gas operations, produced water (the water produced with oil or gas from a well) accounts for the largest waste stream (in terms of volume discharged). Its discharge is continuous during oil and gas production and typically increases in volume over the lifetime of an offshore production platform. Produced water discharge as waste into the ocean has become an environmental concern because of its potential contaminant content. Environmental risk assessments of ocean discharge of produced water have yielded different results. For example, several laboratory and field studies have shown that significant acute toxic effects cannot be detected beyond the "point of discharge" due to rapid dilution in the receiving waters. However, there is some preliminary evidence of chronic sub-lethal impacts in biota associated with the discharge of produced water from oil and gas fields within the North Sea. As the composition and concentration of potential produced water contaminants may vary from one geologic formation to another, this conference also highlights the results of recent studies in Atlantic Canada.
Author:
Publisher: Natural Resources Canada
ISBN:
Category :
Languages : en
Pages : 269
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Book Description
Author:
Publisher: Natural Resources Canada
ISBN:
Category :
Languages : en
Pages : 607
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Book Description
