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Seasonal relationships in biological parameters and in spatial distribution in the euphausiid populations sampled during the XIIIth and XVth expedition to the Ross Sea
Abstract: This report summarises the results of krill studies from a large-scale surveys of the ... . A midwater sampler-trawl (Hamburg Plankton Net) was used to collect zooplankton and fish larvae. Net ... samples data on Euphasiids were analysed at the aim of: 1) obtain a general picture of interannual and ... . crystallorophias had common spatial distribution. Juveniles of E. superba were concentrated in a delimited area in ...
Meeting Document : WG-EMM-01/62 : Autor(es): M. Azzali, J. Kalinowski, G. Lanciani, I. Leonori and A. Sala (Italy)
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Marine Protected Area planning by New Zealand and the United States in the Ross Sea region
achieve the aims of Article 2 of the Convention. CCAMLR has agreed a list of milestones for establishing ... a system of MPA in the Convention Area by 2012 (SC-CAMLR XXVIII, 3.28) and has encouraged Members to ... design and propose MPA scenarios on a regional basis. The 2011 CCAMLR MPA Workshop is intended to ... facilitate this process by reviewing MPA scenarios prepared and submitted by Members and providing a forum ...
Meeting Document : WS-MPA-11/25 : Autor(es): B.R. Sharp (New Zealand) and G.M. Watters (USA)
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Results of E.L. Holmberg 1995 fish survey in Subarea 48.3
aggregation of stations in a nested ANOVA model. An increase over last year's values was observed in the ... within the historical limits except for a the possible presence of a large eddy in the northern part of ... survey for krill which covered a total of 800 nautical miles in the South Georgia shelf has shown the ... ., Madirolas, A., Balestrini, C., Tossonotto, G., Gonzalez, B., Calcagno, J. Title: Results of E.L. Holmberg ...
Meeting Document : WG-FSA-95/35 : Autor(es): Marschoff, E., Madirolas, A., Balestrini, C., Tossonotto, G., Gonzalez, B., Calcagno, J.
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THE SELECTION OF TRIPS BASED ON DATA METRICS FOR THE ASSESSMENT OF ANTARCTIC TOOTHFISH IN THE ROSS SEA
Abstract: A dataset for the 2009 assessment of Antarctic toothfish (Dissostichus mawsoni) in the ... released tags, and/or where tags released on the trip were subsequently recaptured at a high rate. These ... trips were used to define a range for various data quality metrics considered to be informative with ... recovery or where released tags were recaptured at a high rate, the majority of the catches, tag releases ...
Meeting Document : WG-FSA-09/35 : Autor(es): D.A.J. Middleton (New Zealand)
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VARIATION IN DEMERSAL FISH SPECIES RICHNESS IN THE OCEANS SURROUNDING NEW ZEALAND: AN ANALYSIS USING BOOSTED REGRESSION TREES
species richness, with highest richness occurring at depths of 900 to 1000 m, and with a broad plateau of ... concentrations of chlorophyll a and in zones of mixing of water bodies of contrasting origins. Local variation in ... their depth. Variables describing trawl length, trawl speed, and cod-end mesh size made a substantial ... mesh size and increasing trawl speed, but increased with increasing trawl distance, reaching a plateau ...
Meeting Document : WS-VME-09/P04 : Autor(es): Leathwick, J.R., Elith, J., Taylor, P., Francis, M.P., Hastie, T.
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RESPONSE OF ANTARCTIC BENTHIC COMMUNITIES TO DISTURBANCE: WRST RESULTS FROM THE ARTIWCIAL BENTHIC DISTURBANCE EXPERIMENT ON THE EASTERN WEDDELL SEA SHELF, ANTARCTICA
this experimental field study. By means of 11 densely-placed hauls with a modified bottom trawl, a ... seabed area of approximately 100 x 1000 m was artificially scoured to inflict a similar damage to the ... benthic habitats as a grounding iceberg. Before the disturbance event and 11 days after it, the seafloor ... drastically reduced by a factor of 10, while mean abundances were only slightly reduced. Demersal fish biomass ...
Meeting Document : WS-VME-09/P05 : Autor(es): Rossi, S., Mintenbeck, K., Knust, R., Isla, E., Gerdes, D.
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Detailed distribution of krill fishing around South Georgia
1 ° longitude) recorded statistics. Earlier analyses of these data have shown this was a shelf-break ... fishery over much of the Scotia Sea. Although these statistics give a general idea of where the fishery ... a seasonal pattern. In 1994 the fishery was almost totally based over a large shallow bank area on ... operated further west on a range of banks associated with submarine canyons. The data for 1993 were only ...
Meeting Document : WG-EMM-96/64 : Autor(es): Parkes, G., Everson, I., Trathan, P.N., Murphy, E.J.
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Population dynamics of wandering albatross Diomedea exulans and Amsterdam albatross D. amsterdamensis in the Indian Ocean and their relationships with longline fisheries: conservation implications
amsterdamensis appears to have similarly recovered since 1985, but remains close to extinction. A demographic ... fishery and to a lesser extent the Patagonian tooth-fish fishery operating on the Kerguelen shelf ... : Decreased fishing effort and a concentration outside the central Indian Ocean by the Japanese fishery during ... recent years has probably resulted in the slow recovery of these albatross populations as a result of ...
Meeting Document : WG-FSA-96/09 : Autor(es): Jouventin, P., Brothers, N., Weimerskirch, H.
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Possible effects of different levels of fishing on krill on predators - some initial modelling attempts
of the parameters of predator survival rates as functions of krill abundance, by considering a krill ... breeding success patterns for certain krill predator species. A "one-way" interaction model is ... . However, the analyses also raise a number of questions about the proper interpretation of the available ... merit discussion at the forthcoming WG-Kril1 and WG-CEMP meetings. A formalism for a "two-way" ...
Meeting Document : WG-KRILL-93/43 : Autor(es): D.S. Butterworth and R.B. Thomson (South Africa)
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Preliminary analysis of toothfish catch, CPUE, size structure and mark-recapture data from SSRUs 486A and 486G, with comments on the sustainability of different harvest levels
in Subarea 48.6 north of 60°S (the combined SSRUs 48.6A and 48.6G). A preliminary assessment for D ... age-structured production model approach with a deterministic recruitment is applied. Age is linked ... to size via a simple von-Bertalanffy equation in which variance in catch-at-length for a given age is ... standardised using GLMs prior to their use in the assessments. A simple accounting equation is used to keep ...
Meeting Document : WG-FSA-12/31 : Autor(es): E. Thomson and M. Bergh (South Africa)