Search results
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NET-BASED VERIFICATION OF ACOUSTIC TECHNIQUES USED TO IDENTIFY ANTARCTIC KRILL
model derived target id window only identified krill in 6 of the 16 nets correctly. The ‘2 freq 2-16 ... ’ algorithm attributed more than 90 % of the total backscatter to krill in all but 1 aggregation with the ‘2 ... krill in 12 out of the 16 nets. The ‘2 freq 2 – 12’ window only attributed more than 90 % of the total ... backscatter to krill in 6 nets while the ‘3 freq model’ attributed only just greater than 50 % of the ...
Meeting Document : WG-EMM-08/54 : Author(s): J. Watkins and S. Fielding (United Kingdom)
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Antarctic Climate Change and the Environment – 2019 Update
are available online as a wiki at http://acce.scar.org/wiki/Antarctic_Climate_Change_and_the ... are available online as a wiki at http://acce.scar.org/wiki/Antarctic_Climate_Change_and_the ...
Meeting Document : SC-CAMLR-38/BG/17 : Author(s): Submitted by SCAR
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Total mercury and methylmercury concentrations in Antarctic toothfish (Dissostichus mawsoni): Health risk assessment
Abstract: In the present study, the concentrations of total mercury in different organs of the ... concentrations of 0.165 ± 0.095 mg/kg (0.023–0.454 mg/kg) in the Antarctic toothfish. In fish muscle ... , methylmercury accounted for approximately 40% of the total mercury. In a comparison analysis, muscle and liver ... Division 58.4.1 off the coast of Antarctica were determined. The results revealed total mercury ...
Meeting Document : WG-FSA-17/P02 : Author(s): M. Yoon, M.-R. Jo, K.-T. Son, W.-S. Choi, S. I. Kang, S.-G. Choi, J. H. Lee and T. S. Lee
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WG-FSA-2019
Characterisation of the toothfish fishery in the Ross Sea region (Subarea 88.1 and SSRUs 88.2A–B) through 2018/19 J ... mawsoni) in the Ross Sea region to 2018/19 A. Dunn WG-FSA-2019/09 Stock Annex for the stock assessment of ... toothfish in the Ross Sea region (881 & 882AB) A. Dunn and S. Parker WG-FSA-2019/12 Summary of the ... . Okuda WG-FSA-2019/22 Annual report of research fishing operations at Subarea 48.6 in the 2018/19 fishing ...
Meeting
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POPULATION ASSESSMENTS OF GENTOO PENGUINS (PYGOSCELIS PAPUA) BREEDING AT AN IMPORTANT ANTARCTIC TOURIST SITE, GOUDIER ISLAND, PORT LOCKROY, PALMER ARCHIPELAGO, ANTARCTICA
Abstract: Goudier Island is located in the Palmer Archipelago, to the west of the Antarctic ... Peninsula; it is one of the most frequently visited tourist sites in Antarctica. A number of gentoo penguin ... six visited colonies, two showed an important and significant statistical decline in the number of ... (Pygoscelis papua) breeding colonies are located on the island and these have been the focus of one of the ...
Meeting Document : WG-EMM-09/P07 : Author(s): P.N. Trathan, J. Forcada, R. Atkinson, R.H. Downie and J.R. Shears
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Chinstrap penguins alter foraging and diving behaviour in response to krill size
dives were unexpectedly deep (up to 110m) and mean nighttime depths sometimes exceeded those from ... on fish, mean nighttime dive depths, and the proportion of foraging trips occurring overnight. Based ... unexpectedly deep (up to 110m) and mean nighttime depths sometimes exceeded those from the daytime. The average ... annual size of krill was negatively correlated to the number of penguins foraging on fish, mean nighttime ...
Meeting Document : WG-EMM-07/11 : Author(s): A.K. Miller and W.Z. Trivelpiece (USA)
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Monitoring a marine ecosystem using responses of upper trophic level predators
offspring growth tended to explain the greatest proportion of the variability in the CSI and this was ... 1977 and 1998. There was no trend in the CSI from variables representative of foraging conditions ... acute but transient variability that is amplified in the response of upper-trophic level predators ... . There is less certainty that trends in populations are a consequence of shifts in the degree to which ...
Meeting Document : WG-EMM-01/25 : Author(s): I.L. Boyd and A.W.A. Murray (United Kingdom)
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Marine debris: a persistent and emerging threat to antarctic ecosystems
, particularly microplastics, in Antarctic ecosystems is understudied. Combatting the problem of microplastics in ... outlines the significant gaps in knowledge of the spatial distribution of marine debris in the Antarctic ... needed, particularly to investigate the trend of heightened microplastic concentrations in areas of high ... human activity in the Antarctic. Understanding of the ecological impacts of this debris is also limited ...
Meeting Document : SC-CAMLR-XXXVI/BG/29 : Author(s): Submitted by ASOC
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Foraging trip duration in male and female macaroni penguins at Bouvetøya
-transmitters in the middle of the brooding period (chick age 12-18 days) and 17 females instrumented at the ... attendance periods in the colony where shorter (average 11.9 h) than those of males (average 21.4 h), and ... Abstract: The CEMP Standard Methods for monitoring foraging trip duration in Macaroni Penguins ... recommend using only males. However, males attend the chicks at the nest during most of the brooding period ...
Meeting Document : WG-EMM-98/28 : Author(s): F. Mehlum, K. Isaksen and V. Bakken (Norway)
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First increment validation of Patagonian toothfish (Dissostichus eleginoides) from Heard Island
represent annual events, no direct validation has been provided for the early growth of this species. In an ... attempt to determine the position of first increment formation daily increments in 7 sagittal otoliths ... the ventral side of the otolith section was 0.630mm. This is consistent with the measurements in ... one opaque and one translucent increment is formed each year on the sectioned face of sagittal ...
Meeting Document : WG-FSA-05/61 : Author(s): K. Krusic-Golub, C. Green and R. Williams (Australia)