Search results
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Uncertainty in standard sphere calibrations
Abstract: In fisheries acoustics, the standard sphere method of echosounder calibration is most ... method, a series of experiments were conducted in a deep tank (Demer and Hewitt, 1993). Results indicated ... that variations in pulse length (0.1 and 0.3 ms), water temperature (0.5 to 5.5 C), and choice of ... variations in the system gains of 0.3, 0.2 and 1.5 dB, respectively. Additionally, system gain values ...
Meeting Document : WG-EMM-95/70 : Author(s): Demer, D.A., Hewitt, R.P.
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Note sur l'étude d'évaluation de l'impact des pêcheries sur les populations de pétrels à menton blanc Procellaria aequinoctialis et de pétrels gris Procellaria cinerea aux îles Crozet et Kerguelen
Abstract: This study reviews the impact of longline fishing on populations of white-chinned ... shows that the population of white-chinned petrels at Possession Island (Crozet) decreased sharply ... decrease in the population was more marked as a result of previous levels of incidental mortality. At ... present, the level of mortality of white-chinned petrels in Subarea 58.6 has not reached the critical ...
Meeting Document : SC-CAMLR-XXVI/BG/22 : Author(s): Délégation française
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Beach debris survey Signy Island, South Orkney Islands, 1998/99
categories. A total of 83 items weighing 12.96 kg was collected. The number of items recovered was the ... highest since 1996/97 and showed an increase of 86% compared to the previous year. The total mass of items ... recovered was more than double the mass of items in 1997/98. Classifying the material by source revealed ... that 40% had come from ships or fishing vessels in the form of packaging bands, fishing net and foam ...
Meeting Document : CCAMLR-XVIII/BG/7 : Author(s): Delegation of the United Kingdom
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MULTIPLE INDICATORS SUGGEST A STRONG ECOSYSTEM ANOMALY AT SOUTH GEORGIA IN 2009
local oceanographic and atmospheric conditions. Much of the observed variability in various fitness ... metrics for birds, seals and fish seems to be connected with the availability of Antarctic krill ... marine ecosystem at South Georgia is the focus of a major research effort and consequently there are many ... sources of data available indicating its state. These include remotely-sensed satellite data, fishery data ...
Meeting Document : WG-EMM-09/23 : Author(s): S. Hill, M. Belchier, M. Collins, S. Fielding, E. Murphy, P. Trathan, H. Venables and C. Waluda (United Kingdom)
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RESEARCH PLAN FOR TOOTHFISH IN DIVISION 58.4.4a & b BY SHINSEI MARU NO. 3 IN 2009/10
Abstract: In order to clarify stock status and biological characteristics of Dissostichus spp. in ... Division 58.4.4 a & b, a total of 124 research hauls are allocated on 10-minute latitude x 20-minute ... longitude grid points (spaced approximately 10 nautical miles apart). Almost all of the research hauls are ... shallow points of < 500 m in SSRU A in order to avoid catching small fishes. A Trot line system will be ...
Meeting Document : WG-SAM-09/11 : Author(s): Delegation of Japan
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A proposal for a CCAMLR vessel monitoring system
Abstract: A draft configuration of the CCAMLR Vessel Monitoring System (VMS) was prepared using ... available expertise in the design and implementation of satellite-based vessel monitoring of several CCAMLR ... Members and of the Forum Fisheries Agency. Technical consultation on VMS development, set-up and operation ... , available onboard equipment and its use, and transmission and processing of position reports was provided by ...
Meeting Document : CCAMLR-XIV/14 : Author(s): Secretariat
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Domain 1 Marine Protected Area Preliminary Proposal PART A-1: Priority Areas for Conservation
Abstract: This document contributes to the planning process for the designation of a Domain 1 MPA ... display of a large amount of information, not only contributing to the best science available but also ... providing a platform for the sharing and visualization of information, highlighting the multinational ... approach in all stages of the decision making process. In particular, this paper describes the ...
Meeting Document : SC-CAMLR-XXXVI/17 : Author(s): Delegations of Argentina and Chile
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Implanted identification tags in penguins: implantation methods, tag reliability and long-term effects (draft version)
Abstract: Subcutaneously implanted passive transponder tags have proved to be a reliable way of ... identifying individual penguins by both manual and automated means. We have found the survival of tagged ... Ad61ie penguins (Pygoscelis adeliae) over five seasons to be consistently higher than that of birds ... problems associated with the use of implanted devices. The transponder removed from one bird had developed ...
Meeting Document : WG-EMM-Methods-96/08 : Author(s): Kerry, K., Clarke, J.
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Antarctic's pelagic ecosystem: how environmental change will affect Salpidae population structure
vulnerable region of Western Antarctic. The relatively simple food web of this area relies on krill ... - Euphausia superba. Presumably as a result of climatic fluctuations, a decrease in the numbers of this ... crustacean has been recorded, followed by an increase in the population of the gelatinous zooplankter Salpa ... the summer season of 2010. It has been found that the horizontal distribution of this gelatinous ...
Meeting Document : WG-EMM-15/P08 : Author(s): A.W. Słomska, A.A. Panasiuk-Chodnicka, M.I. Żmijewska and M.K. Mańko (Poland)
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Proposal for a Climate Change Response Work Program for CCAMLR
of Reference of the Intersessional Correspondence Group (ICG) to develop approaches for integrating ... considerations of the impacts of climate change into the work of CCAMLR (components of TORs 7 and 8). It aims to ... build on related work of the Commission, SC-CAMLR and its working groups, and to link with related work ... of a Climate Change Response Work Program is: To provide a mechanism for identifying and revising ...
Meeting Document : WG-FSA-17/01 : Author(s): Delegations of Australia and Norway on behalf the Climate Change Intersessional Correspondence Group