Resultados de la búsqueda
-
KRILL FISHERY BEHAVIOUR IN THE SOUTHWEST ATLANTIC
mean travel distances are longer after the least catch levels, and the travel distances decreases as ... through the analysis was 15-30 tonnes/haul, which is higher than the 1980s information (5-10 tonne/haul ... close even after considerable number of hauls. The scales of distance after 50 tows from the original ... tows were 10-15 nm, which is the scale of a single concentration. However, there was considerable year ...
Meeting Document : WG-EMM-08/39 : Autor(es): S. Kawaguchi (Australia)
-
Incorporation of a model of krill recruitment into the Butterworth et al. Stochastic krill dynamics model (SKDM)
Abstract: The method of simulating recruitment variability using observed ratios of 0 year krill ... to the total population is validated and tested. The method also links natural mortality to krill ... recruitment. Incorporation into the SKDM increases the variability of the krill population dynamics predicted ... by the model, although median escapement is similar to the previous formulation of the model. Author ...
Meeting Document : WG-Krill-94/05 : Autor(es): D.J. Agnew (Secretariat)
-
THE STRUCTURE AND FUNCTIONING OF MARINE ECOSYSTEM IN ARGENTINE ISLANDS WATERS
Abstract: The long-term environmental monitoring has been provided the insight into the integral ... structure of marine ecosystem in a poorly investigated coastal area of Argentine Island Archipelago The ... structure and functioning of the local biota has a specific response of environmentally different involved ... toxic heavy metals. The pollution inhibits normal reproduction of Antarctic krill, the population ...
Meeting Document : WG-EMM-11/P5 : Autor(es): E.Z. Samyshev
-
Risk assessment framework for subdividing the krill catch trigger level, including relevant background data and information
CM 51-07, which is due to lapse at the end of the 2015/16 fishing season, and presented its ... undertaken to further develop a risk assessment approach to spatially subdivide the trigger level for krill ... pass these with a commentary on to the Scientific Committee to support its review and advice on CM 51 ... -07 to the Commission. This risk assessment framework aims to minimise the risk to predator ...
Meeting Document : SC-CAMLR-XXXV/BG/37
-
Abundance and trends of Type B killer whales (Orcinus orca) around the western Antarctic Peninsula
Abstract: The western Antarctic Peninsula (WAP) is warming rapidly and we need to understand the ... impact of these physical changes on the marine ecosystem. The WAP is surrounded by a complex marine food ... required to understand these trophic dynamics. The apex predator inWAP coastal waters is the killer whale ... ecotypes (Types B1, B2 and A). Here we report on the movement patterns and abundance of both forms of Type ...
Meeting Document : WG-EMM-18/16 : Autor(es): H. Fearnbach, J.W. Durban, D.K. Ellifrit and R.L. Pitman
-
Results of the mark–recapture experiment in Subarea 48.3, 2005
Abstract: The mark-recapture experiment continued at South Georgia in 2005. In total some 8000 ... – distributed over the whole of the fishable grounds in 48.3 this year. The Petersen mark-recapture estimator ... regimes: the historically used Kirkwood shallow selectivity, the single- and double- fleet selectivities ... estimates by CASAL (see WG-FSA-05/16), and a selectivity estimated directly from the tagging data. Estimates ...
Meeting Document : WG-FSA-05/17 : Autor(es): D.J. Agnew and A. Payne (United Kingdom)
-
Ecological games in space and time: the distribution and abundance of Antarctic krill and penguins
Abstract: The distribution and abundance of organisms are affected by behaviors, such as habitat ... , environmental conditions, and the biology of the species involved. Although extensive theoretical work has ... explored predator–prey dynamics, these models have not considered the impact of behavioral plasticity and ... life-history trade-offs on predicted patterns. We apply a modeling method that allows the consideration ...
Meeting Document : WG-EMM-03/33 : Autor(es): S.H. Alonzo, P.V. Switzer and M. Mangel (USA)
-
A revised estimate of short-term yield for the mackerel icefish (Champsocephalus gunnari) off Heard Island based on a trawl survey in 1998
Shell Bank) in the vicinity of Heard Island enabled a revised estimate of yield for the coming 2 seasons ... in 1999 and 2000. While the abundances of icefish are lower in 1998 than in 1997, the Age 3 and Age 4 ... cohorts are still sufficiently strong to provide for a yield greater than estimates of the long term ... precautionary yield. Estimates of yield for the Heard Island Plateau population are 732 tonnes for 1999 and 518 ...
Meeting Document : WG-FSA-98/54 : Autor(es): A. Constable and D. Williams (Australia)
-
Review of activities in monitoring marine debris in the CAMLR Convention Area
entanglements and hydrocarbon soilings were received from South Africa, the United Kingdom, and Uruguay. Non ... -fishing items such as packaging and wood remain the most common type of debris items found in beach ... surveys. The fishing items found were mostly from longline origin. Plastic packaging bands continue to be ... Conservation Measure 26-01 requiring packaging bands to be cut up into 30 cm pieces. The amount of debris in ...
Meeting Document : WG-IMAF-11/04 Rev. 1 : Autor(es): Secretariat
-
The fish diet of black-browed albatross Diomedea melanophrys and grey-headed albatross D. chrysostoma at South Georgia
Abstract: The fish component of the diet of black-browed and grey-headed albatrosses at South ... 1986 and 1994. Fish represented 30% and 72% by mass of the diet of black-browed albatrosses and 14% and ... 60% by mass of the diet of grey-headed albatrosses in 1986 and 1994 respectively. We determined the ... identity and quantified the contribution (by numbers, size and mass) of fish species mainly by using ...
Meeting Document : WG-EMM-96/11 : Autor(es): Reid, K., Prince, P.A., Croxall, J.P.