Search results
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Selectivity-induced bias in growth parameter estimates
Abstract: A short simulation study has been carried out to investigate the size of the bias in ... estimates of growth parameters resulting from fish of different sizes having different probabilities of ... producing considerably lower estimates of L? and higher estimates of K than in the true population. The ...
Meeting Document : WG-FSA-SAM-05/19 : Author(s): G.P. Kirkwood (United Kingdom)
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Commercial krill fisheries in the Antarctic 1973–1988
Abstract: STATLANT data reported to the Commission for the Conservation of Antarctic Marine ... peak of some 500 000t in 1981/82 before droping to a low level in 1983/84 and stabilising at about 400 ... 000t thereafter. Indications are that in terms of both catch and effort the Soviet and Japanese ... fisheries in Statistical Sub-areas 48.1, 48.2 and 48.3 dominate exploitation of krill in the CCAMLR ...
Meeting Document : SC-CAMLR-VIII/BG/11 : Author(s): Delegation of South Africa
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The SCAR Antarctic digital topographic database
Abstract: The Antarctic digital topographic database is the outcome of a truly international ... collaborative project between 11 nations. Data capture was co-ordinated in the UK, under the auspices of the ... number of satellite images (mostly Landsat photographic products). Editing and harmonization of the data ... derived from the different sources has produced a seamless map of Antarctica which has the most up-to-date ...
Meeting Document : SC-CAMLR-XII/BG/16 : Author(s): Delegation of United Kingdom
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Finfish trawl fisheries data and cruise report forms
CCAMLR Scheme of International Scientific Observation (SISO) on board fishing vessels. The logbook for ... mortality of marine mammals and sea birds, by-catch, gear loss, biological information, processing methods ... and conversion factors, and any sightings of unknown vessels and gear. SISO observers are also ... required to complete a cruise report for their trip, detailing inter alia the type of scientific ...
Form
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Krill trawl fisheries data and cruise report forms
CCAMLR Scheme of International Scientific Observation (SISO) on board fishing vessels. The logbook for ... mortality of marine mammals and sea birds, by-catch, gear loss, biological information, processing methods ... and conversion factors, and any sightings of unknown vessels and gear. SISO observers are also ... required to complete a cruise report for their trip, detailing inter alia the type of scientific ...
Form
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Outline proposal for geographic information services for CCAMLR
-of-the-art capacity for managing spatial data for CCAMLR, particularly the types of information ... handling geographic information, and a phased handover of system development and maintenance to the ... Secretariat. BAS is well-placed to offer these geographic information services, with over 10 years of ... staged approach involving different levels of complexity and commitment. At this stage the document only ...
Meeting Document : WG-EMM-12/70 : Author(s): Submitted by the Secretariat on behalf of Adrian Fox, British Antarctic Survey (United Kingdom)
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Surface exchange between the Weddell and Scotia Seas
Abstract: Within Drake Passage, the southern flank of the Antarctic Circumpolar Current (ACC ... ) hosts the ventilation of deep water, the injection of Antarctic shelf waters and interactions between ... westward and eastward boundary cur rents. This exchange is explored through the trajectories of forty ... transport pathways between the eastern Antarctic Peninsula and sites of elevated chlorophyll in the Scotia ...
Meeting Document : WG-EMM-14/P03 : Author(s): A.F. Thompson and M.K. Youngs
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Fish by-catch in the krill fishery: 2018 update
) and CCAMLR SISO data (17 455 hauls) up to 20 Sept 2018 was used to examine the frequency of occurrence ... , length-frequency distribution and geographic provenance of the key fish taxa reported. There is an ... increase in the data quality from the observer scheme and an increase in the frequency of fish bycatch in ... the commercial krill fishery catch data. As in previous years there was a high degree of overlap in ...
Meeting Document : WG-FSA-18/10 : Author(s): CCAMLR Secretariat
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Habituation to an acoustic harassment device (AHD) by killer whales depredating demersal longlines
fisheries that suffer significant losses caused by odontocete depredation. However, the efficacy of AHDs to ... deter odontocetes from fishing gear remains poorly investigated. To determine the effectiveness of AHDs ... distances of 29 killer whales from the vessel (n = 1,812 records) were collected during 45 phases of AHD ... insignificant behavioural response to further activations of the AHD. When tested through Generalized Linear ...
Meeting Document : WG-FSA-14/P04 : Author(s): P. Tixier, N. Gasco, G. Duhamel and C. Guinet
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Revised research plan for the exploratory longline fishery for Dissostichus spp. in Division 58.4.2 in 2014/15
Abstract: Most things related to Dissostichus spp. in the eastern side of Antarctic has not been ... sizes were vulnerable with a big range of about 100-1,500 t per SSRU in 58.4.2. During the 2004-2014 ... get more recapture. The food-web of Dissostichus spp. has started to be studied in the southern Ross ... Sea and 58.4.1C. Some studies on biology of the fish have been evaluated, but those are not enough to ...
Meeting Document : WG-FSA-14/39 : Author(s): Delegation of the Republic of Korea