Search results
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Estimating toothfish biomass in Subarea 48.3 using local depletions
Abstract: We investigated local depletions of toothfish under concentrated fishing effort as a ... means of estimating toothfish density at South Georgia. Over the four years 2000-2003, we found 25 areas ... of 12’ by 12’ where there had been forty or more hauls in any particular year. There were 62 ... individual vessel fishing events in these areas over this period, 40 of which appeared to be depletions ...
Meeting Document : WG-FSA-SAM-04/18 : Author(s): Pearce, J., Agnew, D.
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Krill consumption by Adélie penguins in CCAMLR Divisions 58.4.1 and 58.4.2
Abstract: We estimate the total abundance of Adélie penguins foraging in Divisions 58.4.1 and ... 58.4.2 and provide preliminary estimates of krill consumed by breeding Adélie penguins in these Divisions ... using a newly developed bio-energetics model. Our estimate of ~6 million Adélie penguins substantially ... breeding population than was evident from previous work. The population of breeding Adélie penguins was ...
Meeting Document : WG-EMM-16/65 : Author(s): C. Southwell and L. Emmerson
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The Chinese national scientific observer program for the krill fishery in the Convention Areas from fishing season 2009/10 to 2014/15
krill fishing activities. The Bureau of Fisheries (BoF), Ministry of Agriculture (MOA) of P. R. China ... vessels/seasons out of the total 23 vessels/seasons in the fishery; the annual vessel coverage ranged from ... 66%-100%, with a six year mean of 82%. Scientific observer logbooks and cruise reports were submitted ... to the CCAMLR secretariat. Author(s): Delegation of the People’s Republic of China Title: The ...
Meeting Document : SC-CAMLR-XXXIV/BG/28 : Author(s): Delegation of the People’s Republic of China
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Different CPUE types in Soviet krill fishery statistics in 1977–1992
values of CFD and CEFD, and CFD and CH. Instead, correlation between daily values is rather low, due to ... high fluctuations in hauls duration caused by fishery strategy directed to different final product of ... , number of hauls per day ranged from 1 to 15, mainly 2-4, hauls lasted from 0,1 to 16 hours, mainly 3-8 ... higher number of hauls per day. The histograms of distribution of various CPUE, hauls duration, number of ...
Meeting Document : WG-EMM-03/35 : Author(s): F.F. Litvinov, A.Z. Sundakov and V. Arkhipov (Russia)
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Climate change and precautionary spatial protection: ice shelves
, particularly in the Antarctic Peninsula region. One of the most evident signs of climate change has been ice ... shelf collapse; overall, 87% of the Peninsula’s glaciers have retreated in recent decades. Ice shelf ... collapse will lead to new marine habitats and to biological colonisation. Colonisation of these habitats ... potentially removes physiological barriers that have previously led to the isolation of the Antarctic benthos ...
Meeting Document : WS-MPA-11/17 : Author(s): P.N. Trathan and S.M. Grant (UK)
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Risk maps for Antarctic krill under projected Southern Ocean acidification
Abstract: The embryonic development of Antarctic krill (Euphausia superba) is sensitive to ... . Exposure to elevated CO 2 during the first 3 days of embryonic development significantly retards subsequent ... development even if the embryos are transferred to seawater with current levels of CO 2. Krill embryos appear ... Southern Ocean are predicted by models to rise to above 1500 μatm in some parts of krill’s depth range by ...
Meeting Document : WG-EMM-14/P06 : Author(s): S. Kawaguchi, A. Ishida, R. King, B. Raymond, N. Waller, A. Constable, S. Nicol, M. Wakit and A. Ishimatsu
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Proposal for an experimental crab fishery in Subarea 48.3
population dynamics of P. spinosissima, and consists of three phases to be conducted over a period of two ... years/fishing seasons. Phase 1 occurs at the start of the first fishing season and is a "survey ... beginning of the second fishing season and is a series of three depletion experiments conducted in local ... areas. After Phase 2 normal fishing operations are conducted until CCAMLR initiates closure of the ...
Meeting Document : WG-FSA-93/22 : Author(s): George Watters (USA)
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2019 Ross Sea shelf survey results and notification for research in 2020
Abstract: The time series of relative abundance and age structure from the Ross Sea shelf survey ... 2012, with a revised proposal presented in 2017 for five years (2018–2022). The objectives of the ... survey included monitoring the abundance and age structure of sub-adult (≤ 110 cm TL) toothfish in the ... south of SSRUs 881.J and 881.L in the southern Ross Sea (Strata A–C) using standardised gear in a ...
Meeting Document : WG-SAM-2019/03 : Author(s): S. Parker and C. Jones
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Adélie penguins foraging behaviour and krill abundance along the Wilkes and Adélie Land coasts, Antarctica
Abstract: The foraging behaviour of Adélie Penguins Pygoscelis adeliae was studied simultaneously ... CCAMLR Division 58.4.1 (south of 55 °S, 80- 150 ° E) to determine the extent of overlap between penguin ... over the continental shelf and not in oceanic waters. The percentage distribution of dive depths were ... similar at both colonies; nearly 70 % of all dives were to Author(s): Kerry, K., Rodary, D., Bost, C ...
Meeting Document : WG-EMM-97/64 : Author(s): Kerry, K., Rodary, D., Bost, C., Lemaho, Y., Wienecke, B.C., Thomson, R., Lawless, R., Pauly, T., Robertson, G.
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OCEAN-BOTTOM KRILL SEX
Abstract: For the first time the entire sequence of the mating behaviour of Antarctic krill ... mating can take place near the seafloor at depths of 400–700 m. This observation challenges the generally ... accepted concept of the pelagic lifestyle of krill. The mating behaviour observed most closely resembles ... the mating behaviour reported for a decapod shrimp (Penaeus). The implications of the new observation ...
Meeting Document : WG-EMM-11/P7 : Author(s): S. Kawaguchi, R. Kilpatrick, L. Roberts, R.A. King and S. Nicol