Resultados de la búsqueda
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Benthos images for self training quiz
benthos/ascidiacea/0910 CAP 10 03 RBOC AN?MONE P_066 (1) 433.JPG benthos/ascidiacea/0910 CRX 10 04 FAUB ... (20).jpg benthos/crinoid/1011 ALB 10 09 THOM P_141463216657716461730 Comatule L141 (3).jpg benthos ... BEAF P_137414004286902470334 L137 (20).JPG benthos/gastropod/1314 CAP 13 11 GHOU P_022 GASTEROPODE ... /ophiuroids/0809 IDR 09 01 GASC (20).JPG benthos/ophiuroids/0809 IDR 09 01 GASC (23).JPG benthos ...
Document : Site Section: Science
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Estimating confidence intervals for fish stock abundance estimates from trawl surveys
Paper Title: Estimating confidence intervals for fish stock abundance estimates from trawl ... surveys Abstract / Description: A method is developed for calculating asymptotic confidence intervals for ... trawl surveys, and in particular, develops an improved method for the estimation of confidence ... net haul densities has to allow for an often substantial probability that a given haul will produce ... distribution with one degree of freedom, at the a probability level. An asymptotic confidence interval for ... biomass, given by: where bj is the biomass estimate for stratum j. In calculating an asymptotic ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 203–207 : Autor(es): de la Mare, W.K
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Reproductive performance of seabirds and seals at South Georgia and Signy Island, South Orkney Islands, 1976-1987: implications for Southern Ocean monitoring studies
, South Orkney Islands, 1976-1987: implications for Southern Ocean monitoring studies Abstract ... and for Adélie and chinstrap penguins at Signy Island, South Orkney Islands, are summarised and ... synchronised with those at South Georgia; they correlate best (especially for chinstraps, which suffered badly ... albatross, penguin and fur seal biology are reviewed in terms of their sensitivity and suitability for ... -1987 : IMPLICATIONS FOR SOUTHERN OCEAN MONITORING STUDIES* J.P. Croxall, T.S. McCann, P.A. Prince ... Antarctic FUr Seals, at Bird Island, South Georgia and for Adelie and Chinstrap Penguins at Signy Island ... correlate best (especially for Chinstraps, which suffered badly in 1980-81 and 1982-83) with the date of ... reviewed in terms of their sensitivity and suitability for detecting changes in the marine environment ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 445-447 : Autor(es): Croxall, J.P., T.S. McCann, P.A. Prince and P. Rothery
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A by-catch guide for commonly caught species in CCAMLR longline and trawl fisheries
to develop a bycatch guide for commonly caught fish and skate species in CCAMLR longline and trawl ... fisheries. The guide consists of comprehensive descriptions for 21 species, and two additional appendices ... which contain detailed descriptive keys for Macrourid (Grenadier) identification, and for juvenile fish ... caught in the CCAMLR krill fishery. The Secretariat thanks members for access to materials, and for ...
Meeting Document : WG-FSA-16/17 : Autor(es): CCAMLR Secretariat
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Estimating fishing gear selectivity for Patagonian toothfish (Dissostichus eleginoides) caught by trawlers on the Heard Island plateau region (Division 58.5.2) using trawl and longline length frequency data and forward-calculated continuation ratios
Abstract: Length-dependent fishing selectivity for trawlers fishing for the Patagonian toothfish ... selectivity and a plateau section in between for the length range where fish are assumed fully selected. Using ... random length frequency (LF) data collected from each of trawlers and longliners for fishing seasons 2003 ... -2005 the upper arm of the gear selectivity function for trawlers is estimated using a two-stage process ...
Meeting Document : WG-FSA-05/65 : Autor(es): S.G. Candy (Australia)
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Method for collecting of data on traumatic death of krill passed through the trawl meshes
Abstract: Fishing for krill Euphasia superba Dana has been conducting using midwater trawls of ... different constructions including beam-trawl for several last decades. Not all krill in harvesting zone of ... is applicable for rating of krill traumatic damage, received by it during trawling from cover of net ... bag, only for fishing with hauling of full net for catch extraction. The analogous rating for fishing ...
Meeting Document : WG-EMM-12/43 : Autor(es): V.V. Akishin, I.G. Istomin, V.A. Tatarnikov, A.F. Petrov and R.O. Lebedev (Russia)
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The random stratified trawl survey to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari in the waters of Heard Island (Division 58.5.2) for 2016
April, with the completion of 163 stations. The survey was conducted for the second year on the FV Atlas ... was half that of 2015 but similar to that of the long-term average for the survey. The C. gunnari ... density was five times that of 2015 and nearly three times the average. For the managed bycatch species ... catch rates were lower than the average for macrourids, close to average for C. rhinoceratus and only ...
Meeting Document : WG-FSA-16/23 : Autor(es): G.B. Nowara, T.D. Lamb and D.C. Welsford
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Maturity stages for skates (Rajiformes)
Abstract: Current CCAMLR maturity stages for skates (Rajiformes) use a three-stage key. As such ... manual could lead to some confusion between fish at stage 2 and stage 3 (mature). Suggestions for ... updating the descriptions of the maturity stages for skates are provided, as is a rationale for considering ... a four-stage key that allows for the collection of data for fish that are at active stages of the ...
Meeting Document : CCAMLR-XXXIII/03 : Autor(es): J. R. Ellis, S.R. McCully Phillips and V. Laptivovsky (United Kingdom)
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Maturity stages for skates (Rajiformes)
Abstract: Current CCAMLR maturity stages for skates (Rajiformes) use a three-stage key. As such ... manual could lead to some confusion between fish at stage 2 and stage 3 (mature). Suggestions for ... updating the descriptions of the maturity stages for skates are provided, as is a rationale for considering ... a four-stage key that allows for the collection of data for fish that are at active stages of the ...
Meeting Document : WG-FSA-14/33 : Autor(es): J.R. Ellis, S.R. McCully Phillips and V. Laptivovsky (United Kingdom)
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Update of analysis on sea-ice concentration of southern part of 48.6 and 58.4.2 for the new research block on expected spawning ground of TOA
the period (2002-2017 until April) for 48.6_4 and 48.6_5. In addition, we also analyze the ice ... concentration of 58.4.2 to examine accessibility there for fishing vessels as candidate for a new research block ... . This research block is hypothesized as one of spawning grounds for TOA by Taki (WG-FSA-16/32 Rev. 1 ... ) and hence it should be covered by research for stock assessment in the near future. Author(s): T ...
Meeting Document : WG-SAM-17/10 : Autor(es): T. Namba, T. Ichii and T. Okuda