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1. Selectivity and two biomass measures in an age-based assessment of Antarctic krill (Euphausia superba)

   Abstract:  An integrated, age-structured model was fitted to different combinations of survey data ... using two forms of selectivity (logistic or double-logistic) with time-constant or annually varying ... selectivity to investigate the population dynamics of Antarctic krill (Euphausia superba) near the Antarctic ... the South Shetland Islands from 1992 to 2011. Two indices of krill biomass based on (1) trawl-net ...

   Meeting Document : WG-EMM-15/P07 : Author(s): D. Kinzey, G.M. Watters and C.S. Reiss

2. Classification of Southern Ocean krill and icefish echoes using Random Forests

   Abstract:  Target identification remains a challenge for acoustic surveys of marine fauna ... . Antarctic krill, Euphausia superba, are typically identified through a combination of expert scrutiny of ... echograms and analysis of differences in mean volume backscattering strengths (S V; dB re 1 m-1) measured at ... icefish are currently surveyed using bottom-trawls, but the resultant estimates of abundance may be biased ...

   Meeting Document : WG-EMM-16/23 : Author(s): N. Fallon, S. Fielding and P. Fernandes

3. Peculiarities of icefish Champsocephalus gunnari (Channichthyidae) distribution in South Georgia area during the surveys made by STM Atlantida in 2000 and 2002

   Abstract:  Reasons of differences in icefish distribution and biomass assessment during two ... surveys made by STM “Atlantida” are revealed. Availability of large icefish concentrations in 2000 in the ... northwest shelf area in 10-100m layer resulted in formation of adult fish aggregations in water column. The ... the bottom even in dark hours of the day. During the two surveys, fry and immature fish occurred in ...

   Meeting Document : WG-FSA-03/55 : Author(s): Zh.A. Frolkina, S.M. Kasatkina and N.N. Zhigalova (Russia)

4. Population dynamics of wandering albatrosses Diomedea exulans at sub-Antarctic Marion Island: longline fishing and environmental influences

   Abstract:  The Prince Edward Islands support the largest breeding population of the vulnerable ... Wandering Albatross Diomedea exulans. The number of birds breeding in this population has fluctuated over ... the past three decades and appears to be the result of both real changes in the size of the population ... and changes in the proportion of the population that attempts to breed in a given year. We describe ...

   Meeting Document : WG-FSA-02/16 : Author(s): D.C. Nel, P.G. Ryan and J. Cooper (South Africa)

5. Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Signy Island, South Orkney Islands 1996/97

   Abstract:  The results of the first annual survey of entanglement of Antarctic fur seals at Signy ... Island, South Orkney Islands are reported for the 1996/97 season. Neck collars of man-made debris were ... seen on 12 seals, all of which were juvenile males. Five entangled seals were observed in an area ... around Signy Island Research Station where approximately 1.3% of the fur seal population come ashore. It ...

   Meeting Document : SC-CAMLR-XVI/BG/07 : Author(s): Delegation of the United Kingdom

6. Science supporting the joint New Zealand–United States proposal for the establishment of a marine protected area in the Ross Sea Region

   Region (RSR).  A substantial amount of material has already been presented to the Scientific Committee ... and its working groups, and here we provide an abridged and annotated summary of that material.  We ... organize our summary by linking spatial data to the specific protection and scientific objectives of the ... continental slope, the Balleny Islands and vicinity, and the northern RSR.  A set of maps (provided in an ...

   Meeting Document : SC-CAMLR-IM-I/08 : Author(s): Delegations of the USA and New Zealand

7. Otolith chemistry reveals local population structure of Antarctic toothfish (Dissostichus mawsoni) within the CCAMLR Subarea 48.6

   and economical value and that distributed in the high latitude of the Southern Ocean. The CCAMLR ... subarea 48.6 is one of an important fishing zone, however, the local population structure of D. mawsoni is ... unknown in this regions, which hampered the understanding on population dynamics of this species and the ... management of toothfish fishery. The chemistry in the otolith can often be used to distinguish population ...

   Meeting Document : WG-FSA-18/75 : Author(s): L. Wei, G.P. Zhu, S. Somhlaba, X.Y. Yu and M. Duan

8. Advances are urgently needed in providing regular estimates of krill stock status based on the available data

   measure (the trigger level) which was established in 1991 and is “not related to the status of the krill ... trigger level is not related to the status of the stock. The establishing terms of reference for WG-EMM ... include requests to “assess the status of krill” and “develop management advice … for management of krill ... fisheries”. Although WG-EMM is now a quarter century old, it rarely assesses the status of the krill stock ...

   Meeting Document : WG-EMM-2019/28 : Author(s): S. Hill, J. Hinke, N. Ratcliffe, P. Trathan and G. Watters

9. First increment validation of Patagonian toothfish (Dissostichus eleginoides) from Heard Island

   one opaque and one translucent increment is formed each year on the sectioned face of sagittal ... routinely ageing D. eleginoides, resulting in differences of ageing data presented. One area that was ... assumed to cause interpretation differences was the position of the first increment that corresponded with ... the end of the first year of growth. While there is a general consensus that the observed increments ...

   Meeting Document : WG-FSA-05/61 : Author(s): K. Krusic-Golub, C. Green and R. Williams (Australia)

10. Genetic variation among populations of the Antarctic toothfish: evolutionary insights and implications for conservation

    with over 70% of the world’s fish stocks being fully exploited and in many cases overexploited. On top ... of this, the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) has ... Southern Ocean. The primary target of these new commercial fishing ventures is the large pelagic ... available on the demography, genetics or life history of this large fish. Without such information we have ...

    Meeting Document : WG-FSA-01/69 : Author(s): R.W. Parker, K.N. Paige and A.L. DeVries (USA)

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