Resultados de la búsqueda
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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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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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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)
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Recent trends in numbers of four species of penguins at the Prince Edward Islands
pairs of king penguins were incubating eggs at Marion Island, the larger of the two islands in the group ... considerable fluctuation in chick production in the 1990s. It was roughly estimated that on average 88% of king ... numbers of macaroni and southern rockhopper penguins at Marion Island decreased by about 30% and 70 ... %, respectively. In 2008/09, some 290 000 pairs of macaroni penguins bred at this island, mostly in two large ...
Meeting Document : WG-EMM-10/P01 : Autor(es): R.J.M. Crawford, P.A. Whittington, L. Upfold, P.G. Ryan, S.L. Petersen, B.M. Dyer and J. Cooper
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MODELLING ANTARCTIC KRILL: SCALE, MOVEMENT AND AGE‐STRUCTURE
‐year data on size compositions from net tows and total biomass from hydroacoustics or net tows are ... Abstract: The organization, example outputs, and future objectives of an integrated, age ... 's capabilities are illustrated using 19 years of survey data collected by the U.S. AMLR Program ... available. The model estimates population parameters from data based on a joint likelihood function and is ...
Meeting Document : WG-EMM-11/43 Rev. 1 : Autor(es): D. Kinzey, G. Watters and C. Reiss (USA)
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Preliminary assessment models of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea including data from the 2005/06 season
Abstract: We provide an update of the Bayesian sex and age structured population stock assessment ... model for Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea (Subareas 88.1 and SSRUs 88.2A–B ... ), by including tag-recapture data for 2005–06 from New Zealand vessels. The updated assessment resulted ... previous years. Model sensitivities using tag-recapture data from all vessels, revised biological ...
Meeting Document : WG-FSA-SAM-06/11 : Autor(es): Dunn, A. & Hanchet, S.M.