Search results
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Baited Remote Underwater Video (BRUV) system to monitor Antarctic toothfish distribution and abundance: pilot study results and future design
relevant fish. Lacks of information on the species come from the traditional fishery-based methodology to ... collect samples, which does not cover all the areas of its distribution. Here we want to promote an ... alternative non-extractive methodology to expand the routine collection of data in areas not accessible by the ... of Baited Remote Underwater Video camera (BRUV). From the video they can be inferred information on ...
Meeting Document : WG-FSA-18/62 : Author(s): D. Di Blasi, S. Canese, E. Carlig, L. Ghigliotti, S.J. Parker and M. Vacchi
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CCAMLR MPAs and the global climate and biodiversity crisis
targets call for a global network of MPAs to curb biodiversity loss, and both the first and second CCAMLR ... work. Nearly two decades since MPA discussions began, there are significant gaps in the system of ... CCAMLR MPAs. This has implications not only for the conservation of marine life in the Convention Area ... bulk of a representative system of MPAs by 2020, specifically recommending that CCAMLR: Acknowledges ...
Meeting Document : CCAMLR-38/BG/44 : Author(s): Submitted by ASOC
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Stable isotope analysis reveals trophic variation in adult Antarctic krill (Euphausia superba) around the Antarctic Peninsula from austral fall to early winter
ecosystem and an important link in the food web of the Antarctic ecosystem. The trophic information for this ... of both spatial and temporal variables. We investigated the size dependence and monthly and regional ... variation in δ 13 C and δ 15 N values of adult krill in the Antarctic Peninsula, in the austral fall (April ... to May) and the early winter (June). We aimed to examine the trophic variations of krill occurred ...
Meeting Document : WG-EMM-2019/P03 : Author(s): H.T. Zhang, G.P. Zhu, Q. Song, S.Q. Wang, Y. Yang and Q.Y. Yang
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Biological parameters for icefish (Chionobathyscus dewitti) in the Ross Sea, Antarctica
, diet, and age estimation. All of the icefish sampled were identified as Chionobathyscus dewitti, and ... February, but this was limited, probably due to the short temporal distribution of the data. Length-at ... -maturity and age-at-maturity ogives indicated that 50% of the fish sampled were mature at about 340–360 mm ... (TL) and about 3–4 years of age and that 95% were mature at about 370–400 mm (TL) and 6–8 years of age ...
Meeting Document : WG-FSA-07/25 : Author(s): C.P. Sutton, M.J. Manning, D.W. Stevens, P.M. Marriott (New Zealand)
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Conflict or co-existence? Foraging distribution and competition for prey between Adélie and chinstrap penguins
Orkney Islands during the breeding seasons of 2000 and 2001. Satellite tracking data from of 19 Adélie ... penguins and 24 chinstrap penguins were used to compare foraging distributions. In both years the diet of ... both species was exclusively Antarctic krill (Euphausia superba) of the same size range. In a year of ... low prey availability (2000), there was a statistically significant segregation of foraging areas ...
Meeting Document : WG-EMM-02/15 : Author(s): A.S. Lynnes, K. Reid, J.P. Croxall and P.N. Trathan (United Kingdom)
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Research plan for toothfish in Division 58.4.4a & b by Shinsei Maru No. 3 in 2013/14
Abstract: We made stock status assessments of Dissostichus eleginoides in SSRUs C and D in ... stating that the sensitivity run of the CASAL model should be made by using levels of IUU ranging from ... CASAL_base model includes estimated variability of YCS for the period from 1989 to 2005, and assumed that a ... quarter of observed IUU fishing in the division had occurred in SSRU C. High estimated stock levels were ...
Meeting Document : WG-SAM-13/21 : Author(s): Delegation of Japan
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Key considerations for planning a large-scale krill survey
Abstract: Article II of the Convention requires the Commission to maintain harvested populations ... needs reliable indicators of krill stock size at appropriate spatial scales. It is likely that future ... ) might also play a role in the future management of the krill fishery. Such surveys provide an indication ... of krill biomass at the larger scale which is robust to uncertainties about krill flux. Current ...
Meeting Document : WG-EMM-15/27 : Author(s): S. Hill, J. Watkins (United Kingdom), O.R. Godø (Norway), S. Kawaguchi (Australia), D. Kinzey, C. Reiss (USA), V. Siegel (Germany), P. Trathan (United Kingdom) and G. Watters (USA)
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Revised assessment models for Patagonian toothfish in research block 58.4.4b_1 (SSRU 58.4.4bC) for the years 1990–2014
Abstract: We presented five sensitive runs of single-sex age-structured CASAL models for stock ... status assessments of Dissostichus eleginoides in the research block 58.4.4b_1 in the last WG-SAM meeting ... included all observations. The Working Group, however, requested the further examination of the sensitivity ... consequences of different harvest levels for the time to recovery to the target level. We revised to retain tag ...
Meeting Document : WG-FSA-15/23 : Author(s): K. Taki (Japan), S. Mormede (New Zealand) and T. Ichii (Japan)
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A feedback management strategy for the krill fishery in Subarea 48.1
Abstract: We present a Stage-2 strategy for in-season feedback management (FBM) of the krill ... fishery in Subarea 48.1. This strategy is a combination of two strategies that were separately proposed ... to the WG-EMM in 2015 and is based on a broad foundation of work undertaken to address a suite of ... action items specified by the WG-EMM. A decision rule to adjust catches in groups of SSMUs (gSSMUs) is ...
Meeting Document : WG-EMM-16/48 : Author(s): G.M. Watters, J.T. Hinke and C.S. Reiss
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Refinements to the strategy for managing depleted fish stocks based on CCAMLR objectives
Abstract: A method of calculating fishing mortalities which will allow depleted fish stock to ... illustrated. These fishing mortalities are based on probabilistic descriptions of the future states of a ... policy of F0.1 will not always lead to stock recovery in two to three decades, and hence that additional ... management policies are required for depleted stocks. The implications of these studies for defining the ...
Meeting Document : SC-CAMLR-IX/BG/14 : Author(s): Delegation of Australia