Considerations for Defining Reference Points for Atlantic Salmon that Conform to the Precautionary Approach PDF Download
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Author: Gérald J. Chaput
Publisher:
ISBN:
Category : Atlantic salmon fisheries
Languages : en
Pages : 44
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Book Description
Author: Gérald J. Chaput
Publisher:
ISBN:
Category : Atlantic salmon fisheries
Languages : en
Pages : 44
Get Book Here
Book Description
Author:
Publisher:
ISBN: 9780660441757
Category : Atlantic salmon
Languages : en
Pages : 0
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 20
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Book Description
"Fisheries and Oceans Canada (DFO) Ecosystems and Fisheries Management Branch asked DFO Science to develop reference points for Atlantic Salmon that conform to “A fishery decision-making framework incorporating the Precautionary Approach”. That request followed on an action item associated with the implementation of the Wild Atlantic Salmon Conservation Policy to review benchmarks / reference points for Atlantic Salmon which conform to the Precautionary Approach (PA). This Science Response Report results from the Science Response Process of February 8, 2018 on Limit Reference Points for Atlantic Salmon rivers in Salmon Fishing Areas 15 to 18, DFO Gulf Region. This is a step in the development of the PA framework. Further work is required to complete the PA framework including the definition of the Upper Stock Reference point(s), harvest strategies, and harvest decision rules”--Context, p. [1].
Author: Etienne Prévost
Publisher: Editions Quae
ISBN: 9782738009623
Category : Technology & Engineering
Languages : en
Pages : 234
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Book Description
This book collects the available knowledge about the ecology of Atlantic salmon and contemporary stock assessment methods supporting the specific task of establishing reference points. Bayesian approaches for incorporating uncertainty are front and centre in the book. Stock and recruitment analysis methods, transport of reference points, risk analysis and use of index measures of abundance are presented in a format which can be readily understood and applied by scientists, educators, professionals and undergraduate students.
Author: Gerald J. Chaput
Publisher:
ISBN:
Category : Fish stock assessment
Languages : en
Pages : 48
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Book Description
Semelparous species in Canada include the Pacific salmon species (Onchorynchus sp. 6 species) and the eulachon (Thaleichthys pacificus) in the Pacific, and the American eel (Anguilla rostrata) and the sea lamprey (Petromyzon marinus) on the east coast of Canada. Because of semelparity, spawing stock abundance is determined exclusively by the abundance of first time spawning individuals and as a result there is no opportunity for spawning stock to accumulate over years. This review of the present use of reference points in the assessment and management of semelparous species and anadromous salmonids was prepared in support of an advisory process meeting to produce a technical guidance document to assist science practitioners responsible for developing the science elements of the Precautionary Approach (PA) framework. This review is directed at considerations for setting reference points for semelparous species, with emphasis on anadromous salmonid species including iteroparous salmonids. This distinction from other aquatic organisms is the result of specific aspects of their life history and their use of distinct aquatic habitats.--Document.
Author: A. J. F Gibson
Publisher:
ISBN:
Category : Atlantic salmon
Languages : en
Pages : 21
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Book Description
The Department of Fisheries and Oceans (DFO) has adopted "A fishery decision-making framework incorporating the Precautionary Approach (PA)" that is to be used where decisions regarding commercial, recreational, or subsistence controls on harvest and all other removal are required. The primary components of the PA (DFO 2006a) are: Reference Points (RPs) and stock status zones (Healthy, Cautious and Critical); harvest strategies and harvest decision rules; the need to take into account uncertainty and risk when developing reference points and developing and implementing decision rules.--Document.
Author: National Research Council Canada
Publisher: NRC Research Press
ISBN: 9780660149561
Category : Nature
Languages : en
Pages : 456
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Book Description
Papers presented: 1) Reference points for fisheries management: the western Canadian experience; 2) Reference points for fisheries management: the eastern Canadian experience; 3) Reference points for fisheries management: the ICES experience; 4) Spawning stock biomass per recruit in fisheries management: foundation and current use; 5) The development of a management procedure for the South African anchovy resource; 6) How much spawning per recruit is enough?; 7) The behaviour of Flow, Fmed and Fhigh in response to variation in parameters used for their estimation; 8) The Barents Sea capelin stock collapse: a lesson to learn; 9) Variance estimates for fisheries assessment: their importance and how best to evaluate them; 10) Evaluating the accuracy of projected catch estimates from sequential population analysis and trawl survey abundance estimates; 11) Bootstrap estimates of ADAPT parameters, their projection in risk analysis and their retrospective patterns; 12) Analytical estimates of reliability for the projected yield from commercial fisheries; 13) Risk evaluation of the 10% harvest rate procedure for capelin in NAFO Division 3L; 14) Using jackknife and Monte Carlo simulation techniques to evaluate forecast models for Atlantic salmon; 15) Monte Carlo evaluation of risks for biological reference points used in New Zealand fishery assessments; 16) A comparison of event free risk analysis to Ricker spawner-recruit simulation: an example with Atlantic menhaden; 17) Choosing a management strategy for stock rebuilding when control is uncertain; 18) Risks and uncertainties in the management of a single-cohort squid fishery: the Falkland Islands Illex fishery as an example; 19) Risks of over- and under-fishing new resources; 20) Estimation of density-dependent natural mortality in British Columbia herring stocks through SSPA and its impact on sustainable harvesting strategies; 21) The comparative performance of production-model and ad hoc tuned VPA based feedback-control management procedures for the stock of Cape hake off the west coast of Africa; 22) A proposal for a threshold stock size and maximum fishing mortality rate; 23) Biological reference points for Canadian Atlantic gadoid stocks; 24) Stochastic locally-optimal harvesting; 25) ITQ based fisheries management; 26) Bioeconomic methods for determining TACs; 27) Management strategies: fixed or variable catch quotas; 28) Bioeconomic impacts of TAC adjustment strategies: a model applied to northern cod; 29) Experimental management programs for two rockfish stocks off British Columbia; 30)A brief overview of the experimental approach to reducing uncertainty in fisheries management; 31) Fisheries management organizations: a study of uncertainty.
Author: Jason Link
Publisher: Cambridge University Press
ISBN: 1139493027
Category : Nature
Languages : en
Pages :
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Book Description
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.
Author: Serge Garcia
Publisher:
ISBN:
Category : Fishery management
Languages : en
Pages : 0
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Book Description
"Rebuilding depleted stocks is a central part of the fisheries governance agenda. By analysing the available literature, Part 1 of "Rebuilding of marine fisheries" provides a global review of the emergence of the rebuilding paradigm, its key concepts, the trends in fishery resources, and the empirical evidence available on stocks depletion, collapse and rebuilding. It addresses the bio-ecological, economic, and human dimensions of rebuilding or restoration of stocks, multispecies assemblages and habitats/ecosystems and touches on the need for rebuilding at the whole sector level when depletion has become widespread and chronic. The human imensions of stocks and fisheries are given particular attention, looking at conflicting objectives, the bio-economy of rebuilding, its costs and benefits, and the distributional effects of the related reform among actors with their potential social consequences in the short and long terms. Governance is addressed in detail: legal and policy frameworks; rationale and objectives of a rebuilding regime; alternative rebuilding strategies; reference values and protocols; regulatory time-frames; risk management and harvest control rules; impacts of climatic oscillations; management tool-box; implementation guidance and performance evaluation. The document ends with a review of the determinants of success of a rebuilding programme."--Publisher's description for part 1.
Author: Daniel D. Hoggarth
Publisher: Food & Agriculture Org.
ISBN: 9789251055038
Category : Business & Economics
Languages : en
Pages : 284
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Book Description
This publication contains guidelines for fish stock assessment and fishery management using the software tools and other outputs developed by the UK Department for International Development's Fisheries Management Science Programme (FMSP) from 1992 to 2004. It includes a CD-ROM with the installation files for each of the four FMSP software tools: LFDA (Length Frequency Data Analysis), CEDA (Catch Effort Data Analysis), YIELD and ParFish (Participatory Fisheries Stock Assessment).
