Resultados de la búsqueda
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European Union – Measurement of capacity in CCAMLR exploratory fisheries in Subareas 88.1 and 88.2
Abstract: The longline fishery for toothfish in the Ross Sea currently operates as an Olympic ... fishery. The number of vessels operating in the fishery has progressively increased in recent years yet ... overall catch limits have remained relatively stable and as a consequence the fishing opportunities for ... toothfish fishery with specific focus on capacity related issues using information derived from the CCAMLR ...
Meeting Document : WG-SAM-14/19 : Autor(es): Delegation of the European Union
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Beach debris survey – Main Bay, Bird Island, South Georgia, 2005/06
found, more than in any of the previous 9 years, suggesting that the ban on their use aboard fishing ... 101% more during summer, a mass increase of 1.19kg overall (29%). For the third consecutive year ... multifilament (multi-strand) gillnet were found on the survey beach this year (mainly in winter) compared to 11 ... , nylon line was absent from Bird Island, an encouraging result after the peak of 546 pieces in 1995/96 ...
Meeting Document : SC-CAMLR-XXVI/BG/16 : Autor(es): Delegation of the United Kingdom
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The CCAMLR-2000 Krill Synoptic Survey: a description of the rationale and design
krill which are used in models to estimate sustainable yield in Area 48. The survey design includes two ... boundaries is described. The methods used for selecting the location of each survey transect are explained ... and the planned cruise tracks for each of the four vessels participating in the survey are shown ... . Details are also described for adaptively modifying the survey during its execution. This includes ... adopted. Such an approach has been widely used in the past (for instance FIBEX - BIOMASS, 1980) and was ... criteria (for example, the Scotia Sea and Subarea 48.1); survey boundaries therefore had to be based on a ... the two- stage process, all primary sampling units had an equal probability of being sampled; this ... gave the necessary condition for the validity of the design- based variance estimators. An ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 1–23 : Autor(es): Trathan, P.N., J.L. Watkins, A.W.A. Murray, A.S. Brierley, I. Everson, C. Goss, J. Priddle, K. Reid, P. Ward, R. Hewitt, D. Demer, M. Naganobu, S. Kawaguchi, V. Sushin, S.M. Kasatkina, S. Hedley, S. Kim and T. Pauly
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Status and trends of Adelie penguin populations in the Ross Sea region
earlier counts. Populations at nearly all rookeries have increased in size over the last 10–20 years ... . Possible reasons for this, and for annual fluctuations in numbers breeding, include seasonal variations in ...
Meeting Document : WG-CEMP-92/23 : Autor(es): R.H. Taylor, P.R. Wilson and B.W. Thomas (New Zealand)
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CEMP cameras data validation experiment at the Galindez Island gentoo penguin (Pygoscelis papua) colonies
Abstract: The two seasons of the data validation experiment provided for pictures from time-lapse ... ) penguin colonies are discussed. During 2017/18 and 2018/19 seasons, biologists-winterers at Vernadsky ... -lapse camera data for both seasons. The standard deviation for each event varies from ±1 to ±3 days for ... responsibility for releasing documents: Ukraine ...
Meeting Document : WG-EMM-2019/59 : Autor(es): P. Khoetsky, A. Dzhulai, V. Smagol, G. Milinevsky, I. Dykyy, A. Simon, M. Telipska, E. Dykyi, I. Parnikoza and L.Pshenichnov
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Proposal to continue participation in the second year of the joint CCAMLR research survey to collect spatially stratified longline and bathymetric data in 88.2_A and 88.2_B in 2015/16
endorsed two years of spatially stratified longline surveys in the northern region of SSRUs 88.2A–B (SC ... successful completion of the first part of the two year survey, this paper presents the details of the vessel ... , but the stock structure and fish movement patterns are uncertain and more information is required for ... -CAMLR XXXII, paragraph 3.76 (iv-c)). A multi-year, multi-Member research program was therefore ...
Meeting Document : WG-SAM-15/32 : Autor(es): Delegation of the United Kingdom
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Draft: differences in the foraging strategies of male and female Adelie penguins
of breeding Adelie penguins were demonstrated at two widely separated locations over a number of ... years. Female penguins tended to make longer foraging trips than males, ranged greater distances more ... on fish throughout chick rearing. The importance of these results to monitoring programs such as the ...
Meeting Document : WG-EMM-95/46 : Autor(es): Franchi, E., Kerry, K., Clarke, J.
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Food and feeding of the mackerel icefish (Champsocephalus gunnari) around South Georgia in January/February 1991
stomachs and the feeding intensity were uncommonly low in a period when energy rich food is needed for the ... to 3 877) and an unrepresentative coverage of the shelf from year to year. However, two pairs of ... needed for the final maturation of the gonads. Resume La composition du regime alimentaire et ... years when krill is abundant it represents the staple food. Mackerel icefish then tend to aggregate in ... areas of krill concentrations. In years of low krill abundance it is replaced in the diet by the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 15–23 : Autor(es): Kock, K.-H., I. Everson, S. Campbell, G. Parkes, Z. Cielniaszek and J. Szlakowski
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Classification of Southern Ocean krill and icefish echoes using Random Forests
two or more echosounder frequencies. For commonly used frequencies, however, the differences for krill ... underestimated when those methods are used for target identification. Random forests are an objective means for ... Abstract: Target identification remains a challenge for acoustic surveys of marine fauna ... are similar to those for many co-occurring fish species that do not possess swim bladders. At South ...
Meeting Document : WG-EMM-16/23 : Autor(es): N. Fallon, S. Fielding and P. Fernandes
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IDENTIFYING PATTERNS IN DIET OF MACKEREL ICEFISH (CHAMPSOCEPHALUS GUNNARI) AT SOUTH GEORGIA USING BOOTSTRAPPED CONFIDENCE INTERVALS OF A DIETARY INDEX
confidence intervals for an index of relative importance (% IRIDC) of prey categories. Diet varied ... significantly between years and age classes but there was little regional difference in diet. In general diet ... ) fish tended to prey on a higher proportion of T. gaudichaudii and small euphausids such as Thysanoessa ... dependent than 1+ fish. Younger fish appear to have survived, leading to an increase in the estimated ...
Meeting Document : WG-FSA-08/29 : Autor(es): C.E. Main, M.A. Collins, R. Mitchell and M. Belchier (UK)