Search results
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Acoustic visualization of the three-dimensional prey field of foraging chinstrap penguins
presence of at least six, distinct krill aggregations and substantial vertical and horizontal patchiness at ... Abstract: Predator-prey interactions play an important role in determining the dynamics of ... ecosystems. Recently, concerns have arisen due to the commercial harvesting of Euphausia superba, the ... these concerns because of problems associated with determining the availability of krill to their ...
Meeting Document : WG-Joint-94/12 : Author(s): J.E. Zamon, C.H. Greene, E. Meir, D.A. Demer, R.P. Hewitt and S. Sexton (USA)
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Possible effects of different levels of fishing on krill on predators - some initial modelling attempts
Meeting of the CCAMLR's WG-Kril1 and WG-CEMP in 1992 to address this issue. First. estimates are made ... of the parameters of predator survival rates as functions of krill abundance, by considering a krill ... . Computations based on this model indicate that variability in the annual recruitment of krill results in ... . However, the analyses also raise a number of questions about the proper interpretation of the available ...
Meeting Document : WG-KRILL-93/43 : Author(s): D.S. Butterworth and R.B. Thomson (South Africa)
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Changes in the fish biomass around Elephant Island (Statistical Subarea 48.1) from 1976 to 1996
. gunnari remained at a low level. The status of N. rossii is still unclear, although some recovery was ... been exploited from 1978179 to 1988189 with most of the commercial harvesting taking place in the first ... two years of the fishery. Results of bottom trawl surveys conducted by Germany in the vicinity of ... Elephant Island in the 1980s showed that stocks of Champsocephalus gunnari, Notothenia rossii ...
Meeting Document : WG-FSA-97/27 : Author(s): Kock, K.-H.
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Preliminary results of stock estimation for D. mawsoni using CASAL in the research block 48.6_2
Abstract: A preliminal CASAL model was constructed for D. mawsoni at the research block 48.6_2 ... CPUE fit well. On the otherhands, fit of tag release are relatively low level, especiall in 2016. The ... . The MCMC estimates of B0 (18143.15t) and current biomass (17431.60 t) are much higher than the latest ... seems to converge well, We need futher discussion to improve the CASAL model for D. mawsoni at Subarea ...
Meeting Document : WG-FSA-18/72 : Author(s): T. Okuda
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Changes to the Statistical Bulletin
: (1) publication of data by CCAMLR season rather than by split-year (agreed at SC-CAMLR-XXI); and (2 ... ) a revision of the boundaries in Division 58.4.3 and adjacent areas (agreed at CCAMLR-XX). The ... Abstract: Two recent changes have impacted on the compilation of CCAMLR’s Statistical Bulletin ... necessitated some re-interpretation of existing STATLANT data. In most cases, change (1) was easily implemented ...
Meeting Document : SC-CAMLR-XXII/BG/07 : Author(s): Secretariat
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Using data recorded during commercial krill fishing in Feedback Management
) show the inherent variability of catch and acoustic data collected during fishing operation. At the ... there is an unknown impact/uncertainty of the effect of using data collected during aimed trawling at ... of extra effort. Traditional survey practice requires a pre determined survey design that support ... statistical handling of the collected data into stock abundance information. Godø et al. (2015) (WG-EMM-15/13 ...
Meeting Document : WG-EMM-16/74 : Author(s): O.R. Godø, G. Skaret and E. Niklitschek
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The Concept of Representativeness in MPA Design
Abstract: The purpose of this paper is to clarify the concept of “representativeness” in Marine ... Protected Areas (MPAs) design and to review discussions and agreements at CCAMLR meetings relating to its ... application to the designation of a representative system of MPAs in the Southern Ocean. In 2005, CCAMLR ... that would aim to provide a comprehensive, adequate and representative system of MPAs to contribute to ...
Meeting Document : CCAMLR-XXXII/BG/14 : Author(s): Submitted by ASOC
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EFFECT OF STERN-SETTING TUNNEL ON THE SINK RATE OF INTEGRATED WEIGHT LONGLINE (IWL)
the exit point at the water line on the vessel's transom. The exit point of the tube is ... Abstract: This paper describes a new vessel modification to allow setting of longlines via a ... rate of demersal integrated weight longline (IWL). The stern setting tunnel consists of an elongated ... line exits the baiting machine, which is positioned in the aft section of the stern setting deck, to ...
Meeting Document : WG-FSA-08/38 : Author(s): I. Hay and G. Robertson (Australia)
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WILL KRILL FARE WELL UNDER SOUTHERN OCEAN ACIDIFICATION?
of krill. No significant effects were detected on embryonic development or larval behaviour at 1000 μ ... atm pCO2; however, at 2000 μatm pCO2 development was disrupted before gastrulation in 90 per cent of ... and 2000 μatm pCO2 in order to assess the possible impact of ocean acidification on early development ... -response relationship for krill developmental and later stages, in order to predict the possible fate of ...
Meeting Document : WG-EMM-11/P6 : Author(s): S. Kawaguchi, H. Kurihara, R. King, L. Hale, T. Berli, J.P. Robinson, A. Ishida, M. Wakita, P. Virtue, S. Nicol and A. Ishimatsu
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Analisis de los censos de Arctocephalus gazella efectuados en el sitio de especial interes cientifico no. 32, Isla Livingston, Antarctica
Abstract: According to the suggestion made by the Working Group at the CEMP-CCAMLR Meeting held ... results show that the population size of this species, in the study area increased during 26 years, form ... that future censuses carry out in the Cape Shirreff also include the breeding colonies of San Telmo ... Island, because these animals are part of the same population. San Telmo Island is a part of the SSSI No ...
Meeting Document : WG-CEMP-93/24 : Author(s): A. Aquayo L. and D. Torres N. (Chile)