Search results
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Otolith elemental signatures reveal habitat shift of Electrona carlsbergi
which circumpolar distributed between the warm waters of the subtropical confluence zone and the ... Southern Ocean. The distribution, life history and migration pattern of this species were examined using ... the biological data in 1990s, however, the habitat shift of this species was still unclear. The ... validated the habitat shift of this species using otolith elemental signature analysis. Otolith samples were ...
Meeting Document : WG-FSA-17/65 : Author(s): L. Wei and G.P. Zhu
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Zooplankton target strength: volumetric or areal dependence?
MHz and the dependence of these data on animal volume versus cross-sectional area was explored The 420 ... kHz and I MHz data were collected with a dual-beam sonar system and the 200 kHz data with a split-beam ... seawater. The data were compared to both empirical and theoretical models of reduced target strength (TS ... normalized by the square of the animal length) versus ka (the product of wave number and equivalent ...
Meeting Document : WG-Krill-94/13 : Author(s): D.A. Demer and L.V. Martin (USA)
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Antarctic seafloor geomorphology as a guide to benthic bioregionalisation
features of the Antarctic continental margin and adjoining ocean basins at scales of 1:1-5 million. The ... regimes. Where more detailed data are available, shelf geomorphology provides a guide to the distribution ... of the shelf benthic communities recognised by a number of authors. For areas off the shelf, the ... relationships between physical environmental parameters and the benthic biota are more poorly known however ...
Meeting Document : SC-CAMLR-XXVI/BG/27 : Author(s): Delegation of Australia
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Population assessment of Patagonian toothfish in Subarea 48.4 – 2011 update
Abstract: In this paper we update the assessment of D. eleginoides in the northern half of ... Subarea 48.4 presented in 2010. The CASAL model is improved through the incorporation catch at age data ... , as an alternative to the catch at length data that were the only such data available in 2010. The ... catch at age model generates a yield of 52 tonnes based on CCAMLR decision rules. In 2006 the northern ...
Meeting Document : WG-FSA-11/38 : Author(s): J. Roberts, R. Mitchell and R. Wakeford (United Kingdom)
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Demonstrating global leadership in marine spatial protection
Abstract: The CCAMLR Commission and its Scientific Committee have some significant opportunities ... as they convene for their 30th annual meeting. One of the most important is fulfilling their ... commitment to meet the World Summit on Sustainable Development (WSSD) goal of designating a representative ... system of marine protected areas (MPAs) and Marine Reserves by 2012.1 The recent Workshop on Marine ...
Meeting Document : CCAMLR-XXX/BG/20 : Author(s): Submitted by ASOC
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Demersal finfish distribution, abundance and their biological characteristics in Statistical Subareas 48.1 (northern part) and 48.2 (2018–2020)
Abstract: The Republic of Chile completely revised its initial plan for a three-year project to ... study the distribution, abundance and biological characteristics of Antarctic demersal fish communities ... after the first survey had been undertaken in 2016. The revised proposal is planned to run from 2018 to ... 2020. Based on the experience gained in the first phase of research and recommendations made by WG-SAM ...
Meeting Document : WG-SAM-17/18 : Author(s): Delegation of Chile
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Demersal finfish distribution, abundance and their biological characteristics in Statistical Subareas 48.1 (northern part) and 48.2 (2018–2020)
Abstract: The Republic of Chile completely revised its initial plan for a three-year project to ... study the distribution, abundance and biological characteristics of Antarctic demersal fish communities ... after the first survey had been undertaken in 2016. The revised proposal is planned to run from 2018 to ... 2020. Based on the experience gained in the first phase of research and recommendations made by WG-SAM ...
Meeting Document : WG-FSA-17/28 : Author(s): Delegation of Chile
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Interannual variability in Antarctic krill (Euphausia superba) density at South Georgia, Southern Ocean: 1997 – 2013
estimates for a 17 year time series of acoustic surveys of the Western Core Box at South Georgia. Krill ... targets were identified in acoustic data using the approved CCAMLR protocol, that is using a multi ... -frequency identification window and converted to krill density using the Stochastic Distorted-Wave Born ... g m-2) and its distribution was highly skewed with many zero observations. Within each survey the ...
Meeting Document : WG-EMM-14/P04 : Author(s): S. Fielding, J. Watkins, P. Trathan et al.
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Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longline
combination of socio-economical, ecological and conservation issues. However, estimating the amount of ... depredated resource can be especially challenging when depredation occurs on fish in the marine environment ... . This is the case for killer whales (Orcinus orca) and sperm whales (Physeter macrocephalus) depredation ... on the demersal Patagonian toothfish (Dissostichus eleginoides) longline fishery operating within the ...
Meeting Document : WG-FSA-14/10 : Author(s): N. Gasco, P. Tixier, G. Duhamel and C. Guinet (France)
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Investigating emigration in stock assessment models of Antarctic toothfish (Dissostichus mawsoni) in Subarea 88.2 SSRUs 88.2C–H
Abstract: In 2013, the Scientific Committee of CCAMLR could not achieve consensus on a stock ... work. This was presented to WG-SAM in 2014, and found that the models were unable to fit patterns in ... the recaptures of tagged fish seen in the SSRU 88.2H fishery. The patterns showed a sharp decay rate ... of the decay rate over time, and a trend for increasing proportions of tagged fish caught over time ...
Meeting Document : WG-FSA-14/56 : Author(s): S. Mormede, A. Dunn and S.M. Hanchet (New Zealand)