Résultats de la recherche
-
An investigation of avoidance by Antarctic krill of RRS James Clark Ross using the Autosub-2 autonomous underwater vehicle
of RRS James Clark Ross in the northern Weddell Sea and in the Bransfield Strait to assess avoidance ... of the research vessel by Antarctic krill Euphausia superba. The AUV was equipped with the same type ... of scientific echosounder as the research vessel (Simrad EK500 operating at 38 kHz and 120 kHz) and ... measured the density of krill along transect acoustically (g m-2 wet mass) prior to the ship’s arrival. We ...
Meeting Document : WG-EMM-01/14 : Auteur(s): A.S. Brierley, P.G. Fernandes, M.A. Brandon, E. Armstrong, D.G. Bone and the Autosub Team (United Kingdom)
-
THE RISKS OF NOT DECIDING TO ALLOCATE THE PRECAUTIONARY KRILL CATCH LIMIT AMONG SSMUS AND ALLOWING UNCONTROLLED EXPANSION OF THE KRILL FISHERY UP TO THE TRIGGER LEVEL
risks associated with three options for a Stage-1 allocation of the precautionary krill catch limit ... among SSMUs in Subareas 48.1-48.3, it was suggested that a comprehensive assessment of the risks that ... might be incurred by not deciding on such an allocation (i.e., a risk assessment of status quo ... results provided from multiple parameterizations of the same model, and present such a risk assessment ...
Meeting Document : WG-EMM-09/12 : Auteur(s): G.M. Watters (USA), S. Hill (United Kingdom), J.T. Hinke (USA) and P. Trathan (United Kingdom)
-
Impacts of cetaceans on the structure of Southern Ocean food webs
structure and dynamics of the Southern Ocean food web. These should be considered in addition to several ... -predator removal are not a novel concept. While we acknowledge the correlative nature of our examples, we ... lend themselves to this technology. While much of what we relate cannot be easily resolved using remote ... of a broader scientific basis for management of Antarctic marine resources, which are increasingly ...
Meeting Document : WG-EMM-09/P04 : Auteur(s): D. Ainley, G. Ballard, L.K. Blight, S. Ackley, S.D. Emslie, A. Lescroël, S. Olmastroni, S.E. Townsend, C.T. Tynan, P. Wilson and E. Woehler
-
DEVELOPMENT OF RECOVERY PLANS FOR DEPLETED TOOTHFISH STOCKS IN THE INDIAN OCEAN SECTOR OF THE SOUTHERN OCEAN
Abstract: Stocks of Dissostichus mawsoni on BANZARE Bank (Division 58.4.3b) and D. eleginoides on ... Ob and Lena Banks (Divisions 58.4.4a and 58.4.4b) have been subjected to unsustainable levels of IUU ... fisheries. An updated assessment of that status the stock at BANZARE Bank using data from the recent seasons ... along with the estimated time series of historical catches are used to provide estimates of B0 for this ...
Meeting Document : WG-FSA-09/44 : Auteur(s): D.C. Welsford, A.J. Constable and J.P. McKinlay (Australia)
-
Models of Antarctic marine ecosystems in support of CCAMLR and IWC: background
Abstract: Ecosystem models are being developed to explore a range of issues globally. This paper ... to the use of ecosystem models in CCAMLR and the IWC and a history of the developmental work in those ... organisations. It also provides an outline of the nature of modelling for these purposes and the general issues ... CCAMLR and the IWC. Author(s): Constable, A. Title: Models of Antarctic marine ecosystems in support of ...
Meeting Document : CCAMLR-IWC-WS-08/03 : Auteur(s): Constable, A.
-
Statement on the commemoration of the Tenth Meeting of CCAMLR
Author(s): Head of Delegation of the Republic of Korea Title: Statement on the commemoration of ... the Tenth Meeting of CCAMLR Approval: Approved ...
Meeting Document : CCAMLR-X/BG/27 : Auteur(s): Head of Delegation of the Republic of Korea
-
Abundance, size and maturity of krill (Euphausia superba) in the krill fishing ground of Subarea 48.1 during 1990/91 austral summer
north of the South Shetland Islands from 18 January to 3 February 1991. Distinct offshore-inshore ... heterogeneities in abundance and maturity of krill were observed. The survey region was divided into four zones ... ; oceanic, slope frontal, neritic and nearshore zones. The mean density of krill was low in the oceanic zone ... (95% confidence limit), of which 1.22 ± 0.42 million t was concentrated in the fishing grounds (" ...
Meeting Document : WG-KRILL-92/26 : Auteur(s): T. Ichii, H. Ishii and M. Naganobu (Japan)
-
An automated weighing and recording system as an aid for the study of the foraging ecology of Adelie penguins (Pygoscelis adeliae)
Abstract: A System that automatically weighs, identifies and determines the direction of penguins ... colony (589 nests from which 412 chicks were fledged) and related to the foraging ecology of the Adélie ... /2 breeding season. The System logged more than 80,000 penguin crossings over a period of three ... of food to the chick per visit despite males being approximately 480g (11.5%) heavier when empty. A ...
Meeting Document : WG-CEMP-92/20 : Auteur(s): K. Kerry, J. Clarke and G. Else (Australia)
-
Survey estimates of recruitment of toothfish in Subarea 48.3
several unexplainable errors. A new, corrected, series of recruitment estimates was derived using new ... , the modal progression of peaks in the length densities corresponding to cohorts assessed by sequential ... surveys. Length based analysis of these confirms the growth rate expected from the CCAMLR growth equation ... for South Georgia. Although it is easy to spot cohorts, the size of individual cohorts can not be ...
Meeting Document : WG-FSA-SAM-04/16 : Auteur(s): Collins, M., Wakeford, R.C., Moir-Clark, J., Belchier, M., Agnew, D.J.
-
Annual changes in species composition and abundance of myctophid fish in the north of South Georgia (CCAMLR Subarea 48.3), Antarctica, during austral winter from 2002 to 2008
Abstract: Species composition and abundance of myctophid fish were analyzed using the fish ... area north and northwest of South Georgia, Antarctica during the austral winter from 2002 to 2008. A ... total of 9 myctophid species were identified in the by-catch samples, among which Krefftichthys ... anderssoni, Gymnoscopelus nicholsi and Protomyctophum choriodon were abundant. Different life stages of K ...
Meeting Document : WG-EMM-10/22 : Auteur(s): T. Iwami, M. Naganobu, K. Taki and M. Kiyota (Japan)