Resultados de la búsqueda
-
The krill maturity cycle: a conceptual description of the seasonal cycle in Antarctic krill
Abstract: A long term study on the maturity cycle of Antarctic krill was conducted in a research ... temperature and food conditions, and the succession of female maturity stages and intermoult periods were ... observed. In all cases regression and re-maturation of external sexual characteristics were observed, but ... there were differences in length of the cycle and intermoult periods between the experimental conditions ...
Meeting Document : WG-EMM-06/23 : Autor(es): S. Kawaguchi, T. Yoshida, L. Finley, P. Cramp and S. Nicol (Australia)
-
Preliminary assessment of mackerel icefish (Champsocephalus gunnari) for the Heard Island Plateau region (Division 58.5.2) based on a survey in June 2005
Abstract: A survey of Mackerel Icefish, Champsocephalus gunnari,was undertaken in Division 58.5.2 ... in the vicinity of Heard Island in June 2005 to provide the information for an assessment of short ... -term annual yield in the 2005/2006 CCAMLR season. This paper provides a preliminary assessment of yield ... using the assessment methods of CCAMLR. It is proposed that a one-year projection be used in the ...
Meeting Document : WG-FSA-05/39 : Autor(es): A.J. Constable, T. Lamb and R. Williams (Australia)
-
Review of research into seabird–fishery interactions
(post 1990), and in relation to direct effects of fishing through fisheries mortalities was considered ... . The research was divided into five main groupings: a) estimation of bycatch; b) population estimation ... allow an assessment of the utility, current methodologies, and constraints of research into seabird ... biology and fishery interactions. Following from the findings of the review, recommendations were ...
Meeting Document : WG-FSA-05/42 : Autor(es): R. Alderman (New Zealand)
-
On experimental approach to extend boundaries of exploratory fishery on Antarctic toothfish (D. mawsoni) in the Ross Sea (Subareas 88.1 and 88.2) in the meso- and bathypelagial layers
Abstract: Based on the analysis of data on the searching fishery on Antarctic toothfish (D ... . mawsoni) by the Russian fishing vessels "Yantar" and "Volna" in the seasons of 2002/03 ... -2003/04 it has been obtained that the long-line catchability and size composition of fish depended on ... the areas and depth of Antarctic toothfish concentration the need for extension of searching fishery ...
Meeting Document : SC-CAMLR-XXIII/BG/19 : Autor(es): Delegation of Russia
-
Reduced bait loss and bycatch of seabirds in longlining by using a seabird scarer
Abstract: Although longlining is regarded as a highly conservation oriented method of fishing ... , bycatch of seabirds on longlines is a problem in certain seasons and areas. Birds feeding on the bait ... during setting of the gear might cause considerable bait loss and occasional hooking of birds might ... eventually give high mortalities considering the large amounts of hooks used. Both from a fishery and bird ...
Meeting Document : WG-IMALF-94/09 : Autor(es): S. Løkkeborg and Å. Bjordal (Norway)
-
On the estimation of some demographic parameters for Adelie penguins
Abstract: A population dynamics model for Adelie penguins is developed which takes account of the ... factors of lower adult survival rates in the year of first breeding, and the possibility that such ... breeding may be deferred one year if conditions are poor. A Bayesian approach for estimation of the model ... for illustrative purposes. The results for this case would likely be improved by the provision of more ...
Meeting Document : WG-EMM-95/42 : Autor(es): Thomson, R.B., Butterworth, D.S.
-
Climate change and the role of CCAMLR
Abstract: Abstract Fishing magnifies the sensitivity of ecosystems to the effects of climate ... adapting fishing strategies. ASOC advocates that the role of CCAMLR in the climate change context continues ... change, including monitoring efforts, data collection and area protection; 2) extending the use of Marine ... Protected Area (MPAs) networks; 3) extending the application of the Precautionary Approach to include the ...
Meeting Document : CCAMLR-XXIX/BG/19 : Autor(es): ASOC Observer
-
A feedback approach to Ecosystem Based Management: model predictive control of the Antarctic krill fishery
Abstract: The Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) aims ... to develop a feedback approach to aid Ecosystem Based Management (EBM) of the Antarctic krill fishery ... rules based on their predicted performance in a model of the controlled system. Here we use MPC to ... develop a robust control strategy for a simulation model of a spatially resolved predator-prey system. We ...
Meeting Document : WG-EMM-12/19 : Autor(es): S. Hill and M. Cannon (United Kingdom)
-
Results of the Spanish exploratory longline fishery for Dissostichus spp. in Divisions 58.4.1 and 58.4.2 in the two previous seasons
Abstract: We addressed the revisions requested by the WG-SAM-14 regarding the results of the ... second year of Spanish research experience and ongoing research plan presented in WG-SAM- 14/12 and WG ... -SAM-14/09. A summary of the results of the Spanish research that took place in the 58.4.1 division ... during the last two fishing seasons is presented. A prospective estimation of the local biomass (B LOC ...
Meeting Document : WG-FSA-14/35 : Autor(es): R. Sarralde, L.J. López-Abellán and S. Barreiro (Spain)
-
A small unmanned aerial system for estimating abundance and size of Antarctic predators
Abstract: Quantifying the distribution and abundance of predators is integral to many ecological ... studies, but can be difficult in remote settings such as Antarctica. Recent advances in the development of ... new tool for studying the distribution and abundance of predator populations. We detail our experience ... from the first use of VTOLs for estimating abundance, colony area, and density of krilldependent ...
Meeting Document : WG-EMM-15/P06 : Autor(es): M.E. Goebel, W.L. Perryman, J.T. Hinke, D.J. Krause, N.A. Hann, S. Gardner and D.J. LeRoi