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  • 1
    Online Resource
    Online Resource
    Dordrecht :Springer Netherlands,
    Keywords: Fish populations-Mathematical models. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (541 pages)
    Edition: 1st ed.
    ISBN: 9789401121064
    Series Statement: Fish and Fisheries Series ; v.11
    Language: English
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  • 2
    Type of Medium: Book
    Pages: 533 S , graph. Darst
    Edition: Facs. repr. [der Ausg.] 1957
    ISBN: 0412549603
    Series Statement: Chapman & Hall fish and fisheries series 11
    DDC: 639.2
    Language: English
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  • 3
    Book
    Book
    Caldwell, NJ : Blackburn Press
    Keywords: Fish populations Mathematical models ; Fisheries Mathematical models
    Type of Medium: Book
    Pages: XXIII, 533 S. , graph. Darst. , 27 cm
    Edition: Reprint of 1. ed.
    ISBN: 1930665946 , 9781930665941
    DDC: 597.1788
    Language: English
    Note: Reprint of 1st ed. c1957, 1993 Crown copyright; 2004 printing includes new foreword by Sidney Holt dated 5 May 2004 and an appendix of errata compiled by J.M. Hoenig et al , "The investigations described in this book were undertaken during the years 1947-1953 ..." , Includes bibliographical references and indexes , Hier auch später erschienene, unveränderte Nachdrucke
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  • 4
    Type of Medium: Book
    Pages: 49 S. ; 28 cm
    Series Statement: FAO fisheries technical paper / Food and Agriculture Organization of the United Nations 38
    Language: Undetermined
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  • 5
    Publication Date: 2019-02-01
    Description: In a recent publication (Froese et al., ICES Journal of Marine Science; doi:10.1093/icesjms/fsv122), we presented a critique of the balanced harvesting (BH) approach to fishing. A short section dealt with the size-spectrum models used to justify BH, wherein we pointed out the lack of realism of these models, which mostly represented ecosystems as consisting of a single cannibalistic species. Andersen et al. (ICES Journal of Marine Science; doi:10.1093/icesjms/fsv211) commented on our paper and suggested that we criticized size-spectrum models in general and that we supposedly made several erroneous statements. We stress that we only referred to the size-spectrum models that we cited, and we respond to each supposedly erroneous statement. We still believe that the size-spectrum models used to justify BH were highly unrealistic and not suitable for evaluating real-world fishing strategies. We agree with Andersen et al. that BH is unlikely to be a useful guiding principle for ecosystem-based fisheries management, for many reasons. The use of unrealistic models is one of them.
    Type: Article , PeerReviewed
    Format: text
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  • 6
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    Unknown
    Elsevier
    In:  Marine Policy, 69 . pp. 121-123.
    Publication Date: 2019-02-01
    Description: Balanced harvesting is the name of a newly proposed approach to fishing which promises the extraction of high and sustainable fisheries yields while maintaining the structure of the ecosystem from which those yields could be obtained. This is to be achieved through exposing all components of ecosystems (from zooplankton to top predators, including seals, sea birds and marine mammals) to a fishing mortality proportional to their size-specific productivity. This study briefly analyses the incompatibility between balanced harvesting (and its implications) and the stated missions of two major organizations, FAO (which stresses the need of selective fishing in its Code of Conduct for Sustainable Fisheries) and IUCN (which maintains the Red List of Threatened Species), but which have issued reports or organized conferences promoting balanced harvesting. The study also demonstrates the incompatibility of balanced harvesting with the recently reformed Common Fisheries Policy of the European Union. While balanced harvesting appears partly compatible with declared fisheries policies of a few countries, e.g. with regard to whaling, sealing, and indiscriminate biomass fishing, it is not only incompatible with the basic tenets of fisheries science, but also with the vision, gradually emerging globally, that marine organisms such as marine mammals, sea turtles, sea-birds and other fauna have an intrinsic value and right to life that should not be undermined by more of the indiscriminate fishing which currently shapes much of our interactions with the oceans.
    Type: Article , PeerReviewed
    Format: text
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  • 7
    Publication Date: 2019-09-23
    Description: The approach to fisheries termed “balanced harvesting” (BH) calls for fishing across the widest possible range of species, stocks, and sizes in an ecosystem, in proportion to their natural productivity, so that the relative size and species composition is maintained. Such fishing is proposed to result in higher catches with less negative impact on exploited populations and ecosystems. This study examines the models and the empirical evidence put forward in support of BH. It finds that the models used unrealistic settings with regard to life history (peak of cohort biomass at small sizes), response to fishing (strong compensation of fishing mortality by reduced natural mortality), and economics (uniform high cost of fishing and same ex-vessel price for all species and sizes), and that empirical evidence of BH is scarce and questionable. It concludes that evolutionary theory, population dynamics theory, ecosystem models with realistic assumptions and settings, and widespread empirical evidence do not support the BH proposal. Rather, this body of evidence suggests that BH will not help but will hinder the policy changes needed for the rebuilding of ecosystems, healthy fish populations, and sustainable fisheries.
    Type: Article , PeerReviewed
    Format: text
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  • 8
    Electronic Resource
    Electronic Resource
    [s.l.] : Macmillan Magazines Ltd.
    Nature 393 (1998), S. 206-206 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SirWhen asked what he thought of Western civilization, Mahatma Gandhi is said to have replied: “That would be a good idea”. Simmonds and Stroud ask the scientific community to support their call for a global sanctuary to protect whales from direct killing in all ...
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [s.l.] : Macmillan Magazines Ltd.
    Nature 398 (1999), S. 186-186 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SirI hold no brief for Greenpeace, but those of us who monitor these things know that, far from taking action against the stricken whaling ship, as Dan Goodman asserts, the Greenpeace vessel, which happened to be nearby, offered assistance — which was refused — by ...
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 361 (1993), S. 391-391 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR - Professor A. S. Blix is reported (Nature 360, 523; 1992) as saying that "any resource that can be harvested on a sustainable basis . . . should be harvested .... Not doing so is a waste of resources." Professor L. Wall0e expressed a similar view in a public debate with me recently in ...
    Type of Medium: Electronic Resource
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