Advances in Marine Biology, Vol. 51 - download pdf or read online

By D.W. Sims, Alan J. Southward

ISBN-10: 0120261529

ISBN-13: 9780120261529

Advances in Marine Biology used to be first released in 1963. Now edited by way of A.J. Southward (Marine organic organization, UK), P.A. Tyler (Southampton Oceanography organization, UK), C.M. younger (Harbor department Oceanographic establishment, united states) and L.A. Fuiman (University of Texas, USA), the serial publishes in-depth and up to date reports on a variety of issues so as to attract postgraduates and researchers in marine biology, fisheries technological know-how, ecology, zoology, oceanography. Eclectic volumes within the sequence are supplemented through thematic volumes on such subject matters because the Biology of Calanoid Copepods. * comprises over 25 tables and 34 illustrations * Covers such themes as reef fishes, crustacea within the arctic and antarctic, fisheries within the Northeast Atlantic, and extra * four stories authored through specialists of their proper fields of research

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Extra info for Advances in Marine Biology, Vol. 51

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It is possible to have observers on board to close or divide the fishing area if a large proportion of scallops is under the minimal landing size. Areas can be closed regardless of length distribution if there are indications of drastic reductions in stock size. 2. Which scale is appropriate considering the size of the fishing area? There are two possibilities to choose the scale: using natural demarcations for management or dividing the beds into smaller units and managing them independently. This last option can be applied in the short or long term to ensure that the stock can recover after fishing, without overly aVecting the fleet.

Anonymous (1992). Haneskjell. Fisken og Havet. Ressursoversikt for 1992, 61. 48 ELENA GUIJARRO GARCIA Anonymous (1994). Ho¨rpudiskur. Hafrannso´knir 46, 31. Anonymous (1995). Haneskjell. Fisken og Havet. Ressuroversikt for 1995, 65–66. Anonymous (1996). Haneskjell. Fisken og Havet. Ressuroversikt for 1996, 92. Anonymous (1997). Haneskjell. Fisken og Havet. Ressuroversikt for 1997, 94. Anonymous (1998). ’’ Teknisk rapport nr 17. Grønlands Naturinstitut, Nuuk. Anonymous (1998b). Haneskjell. Fisken og Havet.

1993; Hall-Spencer and Moore, 2000; Murawski et al. 2000; Caddy and Defeo, 2003). , 1985). However, following the closures, harvestable scallop biomass had increased by a factor of 15 according to survey data from 1994 to 1998 (Murawski et al. 2000). Closures have shown to be eVective to increase yield per recruit and, what it is more important, to reduce the risk of recruitment and growth overfishing (Murawski et al. 2000; Hart, 2003), but they require a decrease of fishing eVort. Rotational closures distribute fishing eVort over the open areas, but at the same time, they are less restrictive for the fishery than permanent closures (Caddy and Defeo, 2003; Hart, 2003).

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Advances in Marine Biology, Vol. 51 by D.W. Sims, Alan J. Southward

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