Resultados de la búsqueda
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Change in environmental conditions of the Southern Ocean observed by satellites and data-assimilating models between 1981 and 2019
Abstract: We provide a summary of environmental change in the Southern Ocean over the period of ... movement north of the Subantarctic Front; (3) increasing chl-a and NPP in the Subantarctic Front and around ... the southern limit of the ACC except in the Ross Sea region; (4) decreasing chl-a and NPP in the Ross ... Sea sector and on the Antarctic continental shelf; (5) gradual loss of sea-ice in the Amundsen Sea and ...
Meeting Document : WG-EMM-2019/39 : Autor(es): M. Pinkerton
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Killer whale Orcinus orca and sperm whale Physeter macrocephalus interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic
Living Resources) observers between 2000 and 2002 at South Georgia (Subarea 48.3) in the Southeast ... deployed in depths of 300 to 2000m, concentrated along the 1000m contour. Sperm whales were the most ... abundant marine mammals observed in the vicinity of vessels when lines were being hauled, occurring during ... were not often sighted. Interactions with killer whales were most often observed in the day, mostly in ...
Meeting Document : WG-FSA-03/27 : Autor(es): M.G. Purves (United Kingdom), D.J. Agnew (United Kingdom), E. Balguerías (Spain), C.A. Moreno (Chile) and B. Watkins (South Africa)
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Species variability and population structure of Euphausiacea in Admiralty Bay (King George Island; South Shetland Islands) during Antarctic summer
Abstract: The main component of zooplankton in Antarctic pelagic waters, apart from copepods or ... salps, are specimens representing euphausiids. In fjordic areas like Admiralty Bay, data concerning ... expedition to the H. Arctowski station in the Antarctic summer 2008-2009. Biological materials were collected ... in the central part of Admiralty Bay, in Ezcurra Inlet and in the smaller coves of the bay using the ...
Meeting Document : WG-EMM-14/60 : Autor(es): A. Panasiuk-Chodnicka, J. Wawrzynek and M. Iwona Żmijewska (Poland)
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Updated status of Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in inshore sites of the South Shetland Islands: results of a long-term monitoring program (1983–2016) at Potter Cove
, to achieve a 33-year record, 1983-2016, to monitor changes in the prevalence of three species of ... Abstract: Trammel net surveys were continued in Potter Cove, South Shetland Islands, Antarctica ... consistent with those achieved from the most recent offshore bottom trawl research cruises in 2007 and 2012 ... around the South Shetland Islands: 1) a continuous increase in the abundance of N. rossii; 2) further ...
Meeting Document : WG-FSA-16/02 : Autor(es): E. Barrera-Oro, E. Marschoff and D. Ainley
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Gonad analysis of Antarctic toothfish in Subareas 58.4 and 88.3
found to be 0.50, and displayed the tendency of increase with increase in the total length 140 cm. The ... -synchronous type. In the ovaries of growing stage, initial vitellogenic oocytes with approximately 150 ㎛ of ... existed in the cortical section of the cytoplasm. Histological testicular type of Antarctic toothfish was ... testicular lobule type, and the testicular lobule was composed of numerous testicular cysts. In the testis of ...
Meeting Document : WG-FSA-17/09 : Autor(es): J. Kim, S.-G. Choi, J. Lee, J. Lee and D. An
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Report on a random stratified trawl survey to estimate distribution and abundance of Dissostichus eleginoides and Champsocephalus gunnari conducted in the Heard Island region (Division 58.5.2), May–June 2007
Abstract: Since the commencement of commercial fishing in Australian waters on the Heard Island ... plateau in 1997 an annual random stratified trawl survey (RSTS) has been conducted to assess the stocks of ... on the Heard Island Plateau. The survey had the same design as the 2006 RSTS survey in the number of ... stations chosen for sampling in each stratum. This paper describes the conduct of the survey on the FV ...
Meeting Document : WG-FSA-07/46 : Autor(es): G.B. Nowara and T. Lamb (Australia)
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DISTRIBUTION OF KRILL AT THRESHOLD DENSITIES SUITABLE FOR FISHING IN THE ATLANTIC SECTOR: ANALYSIS OF THE 2000 SYNOPTIC SURVEY DATA
shelf SSMUs in terms of the frequency of 1nm integration units with krill densities above and below a ... range of threshold values. 2. In general pelagic SSMUs had markedly lower frequencies of fishable ... . This was also true with other threshold values in the range 25 to 200 gm2 although the difference was ... smaller for higher thresholds. 4. The contrasting probability of encountering fishable concentrations in ...
Meeting Document : WG-EMM-08/16 : Autor(es): S. Hill and D. Agnew (United Kingdom)
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Revised research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Division 58.4.1
began in 2013 in data-poor fisheries. In the present report, the next three-season (2016-18) research ... plan in Division 58.4.1 was revised using the updated CCAMLR C2 and Observer data. The stock sizes for ... management of Dissostichus spp. population(s) in data- poor exploratory fisheries. During the second three ... . To this end, we propose to follow the current research style in the current research blocks for the ...
Meeting Document : WG-FSA-15/17 : Autor(es): Delegation of Japan
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Revised research plan for the 2015/16 exploratory longline fishery of Dissostichus spp. in Division 58.4.2
began in 2013 in data-poor fisheries. In the present report, the next three-season (2016-18) research ... plan in Division 58.4.2 was revised using the updated CCAMLR C2 and Observer data. The stock sizes for ... / fisheries management of Dissostichus spp. population(s) in data- poor exploratory fisheries. During the ... fish. To this end, we propose to follow the current research style in the current research blocks for ...
Meeting Document : WG-FSA-15/18 : Autor(es): Delegation of Japan
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Using spatial population models to investigate the effects of a proposed Marine Protected Area on Antarctic toothfish in the Ross Sea region
model of Antarctic toothfish in the Ross Sea region to investigate the effects of a proposed MPA on the ... status of the toothfish population. This study indicates that the MPA design proposed in 2013 is likely ... to result in a small increase in the catch limit under existing harvest management rules, as well as ... a large increase in the area with little depletion of the population and no increase in the area ...
Meeting Document : WG-FSA-15/42 : Autor(es): S. Mormede, A. Dunn, S.J. Parker and S.M. Hanchet (New Zealand)