Search results
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Performance assessment of underwater setting chutes, side setting and blue-dyed bait to minimize seabird mortality in hawaii longline tuna and swordfish fisheries – Final Report August 2003
Abstract: Mortality in longline fisheries is a critical global threat to some seabird species ... and effectively, will help resolve this global problem. Cooperative research and a commercial ... , commercial viability, and practicality in the Hawaii pelagic longline fisheries. A seabird avoidance method ... capture rates of treatments tested. Because side setting promises to provide a large operational benefit ...
Meeting Document : WG-FSA-03/36 : Author(s): E. Gilman (USA), N. Brothers (Australia), D. Kobayashi, S. Martin, J. Cook, J. Ray, G. Ching and B. Woods (USA)
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Estimating food consumption of marine predators: Antarctic fur seals and macaroni penguins
examples to test the algorithm. A sensitivity analysis showed that estimates of prey consumed were most ... offspring production. Uncertainty in the measurement of metabolic rate led to a positive bias in the mean ... consumed. 3. Assuming a diet mainly of krill Euphausia superba, annual food consumption by Antarctic fur ... ?11] and 8?08 (CV = 0•23) million tonnes, respectively. This was equivalent to a total annual carbon ...
Meeting Document : WG-EMM-02/23 : Author(s): I.L. Boyd (United Kingdom)
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INTERACTIONS OF PATAGONIAN TOOTHFISH FISHERIES WITH KILLER AND SPERM WHALES IN CROZET EXCLUSIVE ECONOMIC ZONE: AN ASSESSMENT OF DEPREDATION LEVELS AND INSIGHTS ON POSSIBLE MITIGATION SOLUTIONS
study (i) provides estimations of annual depredation levels on a 5-years period (2003-2008), (ii ... year period we estimated a total loss of 1200 tons of Patagonian toothfish due to depredation which ... represents a financial loss of approximately 10 millions €. Killer whales were found to be responsible for ... the largest part of this loss (70%) while sperm whales had a lower impact (30%). Photo-identification ...
Meeting Document : WG-IMAF-09/12 : Author(s): P. Tixier, N. Gasco, G. Duhamel and C. Guinet (France)
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PRELIMINARY REPORT OF THE NEW ZEALAND RV TANGAROA IPY-CAML SURVEY OF THE ROSS SEA REGION, ANTARCTICA IN FEBRUARY-MARCH 2008
Abstract: During February and March 2008 New Zealand carried out a major research voyage into the ... trawls, seabed cameras, sleds, and corers were deployed in each habitat to obtain samples for a broad ... 30 years, a total of 282 gear deployments were made at 39 sites covering a wide range of habitats ... were brought back for identification and further study. A total of 55 hours of seabed video and 12,500 ...
Meeting Document : WG-EMM-08/18 : Author(s): S.M. Hanchet, J. Mitchell, D. Bowden, M. Clark, J. Hall, R. O’Driscoll, M. Pinkerton and D. Robertson (New Zealand)
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Longliners, black-browed albatross mortality and bait scavenging in the Falkland Islands: what is the relationship?
-system (demersal) longline setting operations, and a range of environmental and operational variables ... . Logistic regression highlighted that a complex range of environmental and operational variables and black ... , examined over a relatively short time period with minimal environmental variation, the rate of black-browed ... a range of variables influence mortality, until targeted experimental studies are conducted, we ...
Meeting Document : WG-FSA-03/92 : Author(s): T.A. Reid and B.J. Sullivan (United Kingdom)
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PROGRESS REPORT (2008-2009) ON THE ACTION PLAN AIMED AT REDUCING SEABIRD BY-CATCH IN THE FRENCH EEZs IN STATISTICAL DIVISION 58.5.1 AND SUBAREA 58.6
bird mortality. The aim of this paper is to provide a progress report on the resources employed by ... France since the initiation of the plan to limit bird mortality, and to present a brief report on by ... a recommendation made to France during CCAMLR-XXVII to “urgently submit a strategic plan to ...
Meeting Document : SC-CAMLR-XXVIII/11 : Author(s): Delegation of France
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Albatross mortality and associated bait loss in the Japanese longline fishery in the Southern Ocean
Abstract: A conservative calculation of the number of albatrosses killed annually on Japanese ... fishery alone exceeding $A 7 million. If all fish species and the total longlining effort were considered ... , it would be many millions of dollars greater. Apart from a concern for albatrosses, Japan's ... longline fishermen would also benefit by using the solutions offered. It is suggested that a 70% reduction ...
Meeting Document : WG-IMALF-94/06 : Author(s): Brothers, N. 1991. Biol. Conservation, 55: 255-268.
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Peak mortality of krill, fished with midwater trawls and feasible criteria of krill trawls ecological safety
Abstract: The mathematical model of a fishery object contact against a mesh, while escaping ... through a trawl chafer, is presented. Based on it t the equations are provided to calculate the object ... fleet group. Mathematical model is illustrated by a numeric example from the krill fishery. Thus, the ...
Meeting Document : WG-KRILL-93/34 : Author(s): Yu. V. Kadilnikov (Russia)
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Variants of the ASPM assessment of the toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands vicinity which attempt to reconcile CPUE and catch-at-length data
availability as resource abundance drops. The other permits annual fluctuations about a deterministic stock ... -recruitment relationship. A fit of the first variant yields the biologically implausible result of a decrease ... the resource. Author(s): Brandão, A., Butterworth, D.S. Title: Variants of the ASPM assessment of ...
Meeting Document : WG-FSA-SAM-04/12 : Author(s): Brandão, A., Butterworth, D.S.
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Abundance, distribution, energy density and trophic position of euphausiids during winter 2012: preliminary results from the first US AMLR Winter Survey
Abstract: The US AMLR Program has established a 5 year winter oceanographic and biological ... euphausiids in a changing ecosystem. Oceanographic sampling includes hydrographic measurements as well as ... zooplankton taxa are also collected. Here we present preliminary results of a first 8 day shakedown cruise ... water column properties. Future years will include more detailed sampling using a multi-net tucker trawl ...
Meeting Document : WG-EMM-13/40 : Author(s): C. Reiss and C. Jones (USA)