Résultats de la recherche
-
Network characterisation of the food-web of the Ross Sea, Antarctica
Abstract: A balanced ecosystem model is used to explore the system-level characteristics of the ... , i.e. the whole Ross Sea shelf and slope area, averaged over a typical year, and in 35 trophic groups ... not resolved by this analysis. The Ross Sea food-web is a partially inverted biomass pyramid with a ... pronounced peak in biomass in the lower-middle part of the food-web, a result of high biomass of ...
Meeting Document : WG-EMM-12/53 : Auteur(s): M.H. Pinkerton and J.M. Bradford-Grieve (New Zealand)
-
Assessment models for Patagonian toothfish in Division 58.4.4, SRU C on Ob and Lena Banks for the years 1989/90 to 2012/13
eleginoides in SSRUs C in Division 58.4.4 a & b (WG-SAM-13/21) following several advices during the last ... /21), and a combined value of over-dispersions were used for all tag-release years (2008 and 2010‒12 ... -length using regression line between coefficient variances estimated by a bootstrap procedure and ... Japanese trotline system showed the captures of an adequate number of single-hooked fish in a state ...
Meeting Document : WG-FSA-13/35 : Auteur(s): K. Taki (Japan)
-
Aspects of the ecology of the bigeye grenadier at South Georgia
estimates suggest that M. holotrachys is a long lived and moderately slow growing species, reaching ages of ... , an average number for a macrourid of this size. A highly skewed sex ratio of 33:1 females: males was ... suggested that females are far more susceptible to longline capture than males. M. holotrachys is a bentho ... - pelagic predator/scavenger that feeds on a wide range of fish and invertebrates. Author(s): S.A. Morley ...
Meeting Document : WG-FSA-03/16 : Auteur(s): S.A. Morley, T. Mulvey, J. Dickson and M. Belchier (United Kingdom)
-
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 : Auteur(s): M. Azzali, J. Kalinowski, G. Lanciani, I. Leonori and A. Sala (Italy)
-
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 : Auteur(s): B.R. Sharp (New Zealand) and G.M. Watters (USA)
-
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 : Auteur(s): Marschoff, E., Madirolas, A., Balestrini, C., Tossonotto, G., Gonzalez, B., Calcagno, J.
-
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 : Auteur(s): D.A.J. Middleton (New Zealand)
-
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 : Auteur(s): Leathwick, J.R., Elith, J., Taylor, P., Francis, M.P., Hastie, T.
-
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 : Auteur(s): Rossi, S., Mintenbeck, K., Knust, R., Isla, E., Gerdes, D.
-
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 : Auteur(s): Parkes, G., Everson, I., Trathan, P.N., Murphy, E.J.