Resultados de la búsqueda
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Evaluation of some processing techniques applied to acoustic recordings from two krill fishing vessels
the automatic noise removal techniques we had at hand. We also evaluated the use of delineation and ... demonstrated through a CCAMLR proof of concept, but processing is in most cases essential before any use of the ... . Here we show examples of processing with a prerequisite that abundance and distribution of krill are ... our main interest, and that data of interest include both those collected during fishing operations ...
Meeting Document : SG-ASAM-17/03 : Autor(es): X. Wang, G. Skaret and O.R. Godø
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Improving CCAMLR’s monitoring and control of transhipments
monitoring and control of transshipments in 2014 [1], 2015 [2], and 2016 [3]. Despite robust consideration ... CCAMLR members with a strong resource to help address current gaps in the monitoring of transshipments ... . The United States looks forward to reviewing the report’s findings and, with due consideration of the ... ), working with other Members during the intersessional period on a proposal for consideration at CCAMLR ...
Meeting Document : CCAMLR-XXXVI/BG/17 : Autor(es): Delegation of the USA
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Progress towards a representative network of Southern Ocean protected areas
adoption of marine protected areas (MPAs) in national and international waters. While establishing MPAs in ... international waters has proven to be challenging in most of the world, national governments and the Commission ... for the Conservation of Marine Living Resources (CCAMLR) have succeeded in adopting multiple MPAs in ... the Southern Ocean. But are these MPAs representative of Southern Ocean biodiversity and ecosystems ...
Meeting Document : WS-SM-18/12 Rev. 1 : Autor(es): C. Brooks, S. Chown, L. Douglass and B. Raymond
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Global relationships amongst black-browed albatrosses: analysis of population structure using mtDNA and microsatellites
Abstract: The population structure of black-browed (Thalassarche melanophris and T. impavida) and ... five island groups in the Southern Ocean. High levels of sequence divergence were found in both taxa ... (T. impavida). T. melanophris from Campbell Island contain birds from each of the three groups ... , indicating high levels of mixture and hybridization. In contrast, grey-headed albatrosses form one globally ...
Meeting Document : WG-FSA-01/19 : Autor(es): T.M. Burg and J.P. Croxall (United Kingdom)
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A comparison of Antarctic krill (Euphausia superba Dana) caught by nets and taken by macaroni penguins (Eudyptes chrysolophus Brandt): evidence for selection?
) breeding at Bird Island, South Georgia and concurrent net samples caught within the penguin foraging range ... , we examined the potential selection of different length and maturity stages of Antarctic krill ... probability of obtaining length-frequency distributions of krill different from that obtained from the net ... distributions that were statistically different from the original distribution of krill caught in nets on 76 out ...
Meeting Document : WG-EMM-96/08 : Autor(es): Croxall, J.P., Hill, H.J., Trathan, P.N., Watkins, J.L.
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Age determination of the Antarctic fishes Champsocephalus gunnari and Notothenia rossii from South Georgia
Abstract: Foremost in the elucidation of accurate population dynamics parameters in fish is a ... necessity for an errorless estimation of age. Age determination can provide basic life history information ... used annual rhythmic deposition in calcified tissues as time marks but, due ts the lack of distinct ... periodicity in Antarctic hydrographic conditions, age determination of Antarctic fish has proven to be ...
Meeting Document : SC-CAMLR-VI/BG/43 : Autor(es): R. Radtke (USA)
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Updated impact assessment framework to estimate the cumulative footprint and impact on VME taxa of bottom longline fisheries in the CCAMLR Area
assessments for all gear types combined at the scale of entire fisheries. Both WG-SAM and WG-EMM gave specific ... estimate the likely impacts of bottom longline fishing on Vulnerable Marine Ecosystems (VMEs), as required ... by Conservation Measure 22-06. The most recent iteration of the impact assessment (Sharp 2010) was ... account of the specific recommendations of WG-SAM and WG-EMM 2010 and incorporating new information ...
Meeting Document : WG-FSA-10/31 : Autor(es): B.R. Sharp (New Zealand)
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Research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Division 58.4.1
procedure recommended at the WG-FSA in 2013 in order to maximize the expectation of tag-recapture to the ... Abstract: The current season (2014/15) is the final one of the first three-season research which ... by all effective vessels were analyzed for the improvement of stock assessment in the research blocks ... available, SSRU 58.4.1 C may be also one of the important spawning grounds for D. mawsoni from the degrees ...
Meeting Document : WG-SAM-15/05 : Autor(es): Delegation of Japan
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Demographic effects of extreme weather events: snow storms, breeding success, and population growth rate in a long-lived Antarctic seabird
heavy snow storms, and long term data on petrel productivity (i.e., number of chicks pro- duced) at the ... Abstract: Weather extremes are one important element of ongoing climate change, but their impacts ... are poorly understood because they are, by definition, rare events. If the frequency and severity of ... consequences of such events. In this study, we aimed to quantify the effects of snow storms on nest survival in ...
Meeting Document : WG-EMM-16/P13 : Autor(es): S. Descamps, A. Tarroux, Ø. Varpe, N.G. Yoccoz, T. Tveraa and S.-H. Lorentsen
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Report of the WG-FSA Intersessional Subgroup on Sampling Catches from Longlines
estimated sufficiently precisely at 25% coverage to be reasonably sure of detecting increases to ... ; 2) the allocation of observer effort within longline haul and between hauls; and 3) the allocation ... of observer effort directed toward fishery target species versus ecological interactions. Both ... activity by sampling every day of hauling. Both methods essentially follow a multi-stage cluster sampling ...
Meeting Document : WG-FSA-02/52