Search results
-
Comparison of NASC values calculated by swarm-based and grid-based acoustic data processing methods for Antarctic krill density estimation
-ASAM-2017 except that the dB difference window of Sv 120 kHz-Sv 38kHz is set 0 to 20 dB. And the two ... that the dB difference window of Sv120 kHz-Sv38kHz is set 0 to 20 dB. And the two groups of results were ... Abstract: The one nautical mile integrated Nautical Area Scattering Coefficient (NASC) values ... The one nautical mile integrated Nautical Area Scattering Coefficient (NASC) values of four surveys ...
Meeting Document : SG-ASAM-18/04 Rev. 1 : Author(s): X. Yu, X. Wang and X. Zhao
-
EXPLORATORY ASSESSMENT METHODS FOR EXPLORATORY FISHERIES: AN EXAMPLE CASE USING CATCH, IUU CATCH AND TAGGING DATA FOR DIVISION 58.4.3A
limits for this stock, based on these results. Author(s): R.M Hillary (UK) Title: EXPLORATORY ... ASSESSMENT METHODS FOR EXPLORATORY FISHERIES: AN EXAMPLE CASE USING CATCH, IUU CATCH AND TAGGING DATA FOR ... Abstract: This paper details a potential methodology for performing initial stock assessments for ... detailed data, specifically age or length structured data on catches or surveys, is either missing or ...
Meeting Document : WG-SAM-08/05 : Author(s): R.M Hillary (UK)
-
Krill distribution related to water structure and dynamics on the South Georgia shelf in January 2000 (AtlantNIRO-BAS Core Programme 1999/2000)
and distribution were carried out in two standard boxes on the shelf and slope northwest and northeast of South ... • Juvenile krill of 30-36 mm length were observed in the shelf zone and larger specimens, including spawning ... carried out in two standard boxes on the shelf and slope northwest and northeast of South Georgia. Eight ... krill density was nearly 0.2 glm3 and in the eastern box was 1.8 - 4.7 glm3 • Juvenile krill of 30-36 mm ...
Meeting Document : WG-EMM-00/51 : Author(s): V.A. Sushin (Russia), P.P. Chernyshkov (Russia), F.F. Litvinov (Russia), J.L. Watkins (United Kingdom) and A.S. Brierley (United Kingdom)
-
A simulation study of krill fishing by an individual JAPANESE trawler
in the model. Two ad hoc model modifications are introduced to eliminate this inconsistency: artificially ... elongating krill swarms, and allowing hauls to continue through more than one swarm. Twenty four candidate ... is found: haul times are a factor of 4-5 times greater in reality than in the model. Two ad hoc model ... hauls to continue through more than one swarm. Twenty four candidate abundance indices (generally ...
Meeting Document : SC-CAMLR-VII/BG/37 : Author(s): D.S. Butterworth (Invited Expert)
-
Long-term observations from Antarctica demonstrate that mismatched scales of fisheries management and predator–prey interaction lead to erroneous conclusions about precaution
observed to affect krill-dependent predators, like penguins. Using a hierarchical model and 30+ years ... previously observed to affect krill-dependent predators, like penguins. Using a hierarchical model and 30 ... + years of monitoring data, we show that expected penguin performance was reduced when local harvest rates ...
Meeting Document : WG-EMM-2019/11 : Author(s): G.M. Watters, J.T. Hinke and C.S. Reiss
-
A description of current metrics and methods used in providing advice to the Scientific Committee on setting catch limits and assessing research plans in research blocks in exploratory fisheries and closed areas
Abstract: In recent years there have been a number of changes in the criteria, metrics ... In recent years there have been a number of changes in the criteria, metrics and application ...
Meeting Document : WG-SAM-16/18 Rev. 1 : Author(s): CCAMLR Secretariat
-
Growth of mackerel icefish (Champsocephalus gunnari) and age-size composition of populations in subarea of South Georgia
of two contiguous age groups. It was shown that in the 1980s during a number of years the catches were ... based on fish of two contiguous year classes, strong 1984 year class and middle 1983 year class ... from the catches, was rather low. Possibly, the abundance of one or another icefish year class ... of two contiguous year classes, strong 1984 year class and middle 1983 year class. These year classes ...
Meeting Document : WG-EMM-03/60 : Author(s): K.V. Shust and E.N. Kuznetsova (Russia)
-
Growth of mackerel icefish (Champsocephalus gunnari) and age-size composition of population in subarea of the South Georgia
of two contiguous age groups. It was shown that in the 1980s during a number of years the catches were ... based on fish of two contiguous year classes, strong 1984 year class and middle 1983 year class ... from the catches, was rather low. Possibly, the abundance of one or another icefish year class ... of two contiguous year classes, strong 1984 year class and middle 1983 year class. These year classes ...
Meeting Document : WG-FSA-SAM 03/7 : Author(s): K.V. Shust and E.N. Kuznetsova (Russia)
-
Review of CCAMLR activities on monitoring marine debris in the Convention Area
George Island for the fourth consecutive year. There are now 4 sites that have data for more than ... 3 consecutive years, these are: Cape Shirreff, (Livingston Island, South Shetland Islands); Bird Island, (South ... Island for the fourth consecutive year. There are now 4 sites that have data for more than 3 consecutive ... years, these are: Cape Shirreff, (Livingston Island, South Shetland Islands); Bird Island, (South ...
Meeting Document : SC-CAMLR-XXIII/BG/11 : Author(s): Secretariat
-
Revised progress report for the fourth year of the research fishery for Dissostichus spp. in Subarea 48.6 being jointly undertaken by Japan and South Africa
Abstract: A multi-year research plan as outlined in CM 41-04 (2012, 2013, 2014) was initiated ... in Statistical Subarea 48.6 by Japan and South Africa during the 2012/13 fishing season. Two vessels participated ... in the research project in each of the three fishing seasons and the progress achieved during the first 3.5 years ... report for the fourth year of the research fishery for Dissostichus spp. in Subarea 48.6 being jointly ...
Meeting Document : WG-FSA-16/56 : Author(s): S. Somhlaba, R. Leslie, K. Taki, T. Ichii and T. Namba