Search results
-
Results on by-catch of fish during Ukrainian, Polish and Japanese krill fishery in the South Orkney Islands, South Georgia and Shetland Islands areas
Abstract: Observations on abundance of by-catch fishes were made during fishing operations for ... krill Euphausia superba Dana conducted by the Ukrainian trawler Grigory Kovtun in the vicinity of South ... Georgia (May to July, 1992), the Polish trawler Lepus on the fishing grounds of South Orkney Islands and ... South Georgia area (July to August, 1992) and Niitaka Maru to the north of the South Shetland Islands ...
Meeting Document : WG-FSA-96/19 : Author(s): Cielniaszek, Z., Pakhomov, E.A., Iwami, T.
-
Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longline
combination of socio-economical, ecological and conservation issues. However, estimating the amount of ... whether they depredate longline hooks separately or simultaneously, this study aimed at providing two ... indirect methods of assessment of depredated biomass over a 11-year period (from 2003 to 2013), both ... accounting for spatial variations of depredation levels. In the first method, we used fishing data from 6 525 ...
Meeting Document : WG-FSA-14/10 : Author(s): N. Gasco, P. Tixier, G. Duhamel and C. Guinet (France)
-
Results of the groundfish survey carried out in CCAMLR Subarea 48.3 in January 2010
2003/04 of a recent recruitment of evident at Shag Rocks, with presence of putative age 2+ fish (29 ... vessel. Catch-weighted length frequencies of mackerel icefish indicated that although 3+ sized fish ... mean biomass of 52,329 tonnes was estimated for mackerel icefish, with a lower 1-sided 95% CL of 24,334 ... and low availability of krill to mackerel icefish in the area (evidenced by dietary analysis) in 2009 ...
Meeting Document : WG-FSA-10/38 : Author(s): R.E. Mitchell, M. Belchier, S. Gregory, L. Kenny, J. Nelson, J. Brown and L. Feathersone (UK)
-
Revised assessment models for Patagonian toothfish in research block C of Division 58.4.4, Ob & Lena Banks for the years 1989/1990 to 2012/13
Abstract: I made five sensitive runs of CASAL models for stock status assessments of Dissostichus ... eleginoides in research block C in Division 58.4.4 b on the assumption of constant year class strength and no ... IUU fishing occurrence in the block. The five models are as follows: 1) catch at length model as ... addition, proportion mature for ages was calculated on the assumption of logistic curve fitting for the ...
Meeting Document : WG-SAM-14/15 : Author(s): K. Taki (Japan)
-
Estimating food consumption of marine predators: Antarctic fur seals and macaroni penguins
seals and macaroni penguins at the island of South Georgia was 3•84 [coefficient of variation (CV) = 0 ... Abstract: 1. Estimating food consumption is central to defining the ecological role of marine ... , growth, diet, life history and the activity budgets of marine predators to estimate population energy ... requirements and food consumption. 2. Two species of marine predators (Antarctic fur seal Arctocephalus gazella ...
Meeting Document : WG-EMM-02/23 : Author(s): I.L. Boyd (United Kingdom)
-
Glider-based estimates of Antarctic krill in Bransfield Strait, and the West shelf off Livingston Island, Antarctica
(AMLR) Program at several temporal and spatial scales to explore the feasibility of using gliders to ... Research), equipped with a suite of oceanographic sensors (CTD, fluorometers, and oxygen) and a three ... biomass assessments of Antarctic krill (Euphausia superba) in the Bransfield Strait and the west shelf of ... from 350 glider profiles was 25.0 g m-2, compared with the mean biomass density of 28 g m-2 collected ...
Meeting Document : WG-EMM-2019/13 : Author(s): C. Reiss, A. Cossio, G. Cutter, J. Walsh and G. Watters
-
BIOLOGICAL PROSPECTING IN THE SOUTHERN OCEAN, A ROLE FOR CCAMLR
fish and other vertebrates come in second at 10%. Of those records, the majority relate to fish, with ... Abstract: The issue of bioprospecting has been a constant item on the agenda of ATCM since 2003 ... established to examine the issue of Biological Prospecting in the Antarctic Treaty Area. Although increasingly ... is not defined in any international convention or agreement. Indeed, there remains a range of views ...
Meeting Document : CCAMLR-XXVII/BG/36 : Author(s): Submitted by IUCN
-
Revised reports on abundance and biological information on toothfish in Division 58.4.4 a and b by Shinsei Maru No. 3 in 2010/11 season
）were observed at the 35 hauls. Most of whales observed and the predatory damaged toothfish occurred in ... the survey in two SSRUs (B & C) of Ob Lena Bank. Total catch (excluding fish released alive) of ... . eleginoides showed the highest catch of 35.4 tonnes, contributing 93.6 % to the total catch. Mean CPUEs of D ... %; 15.3 indiv. / 1,000 hooks) in terms of number and 62.3 kg / km (CV = 76.0%; 111.2 kg / 1,000 hooks) in ...
Meeting Document : WG-FSA-11/14 : Author(s): K. Taki, T. Iwami and M. Kiyota (Japan)
-
Estimating fishing gear selectivity for Patagonian toothfish (Dissostichus eleginoides) caught by trawlers on the Heard Island plateau region (Division 58.5.2) using trawl and longline length frequency data and forward-calculated continuation ratios
selectivity begins from near 800 mm and declines from a selectivity of 1 to 0 at 1731 mm length. Adjusting for ... random length frequency (LF) data collected from each of trawlers and longliners for fishing seasons 2003 ... -2005 the upper arm of the gear selectivity function for trawlers is estimated using a two-stage process ... . In the first stage I estimate a parameter for each 40 mm wide length bin from the fit of a binomial ...
Meeting Document : WG-FSA-05/65 : Author(s): S.G. Candy (Australia)
-
DEVELOPMENT OF EFFECTIVE MITIGATION TO REDUCE SEABIRD MORTALITY IN THE ICEFISH (CHAMPSOCEPHALUS GUNNARI) TRAWL FISHERY IN SUBAREA 48.3
Subarea 48.3 became a concern in the late 1990s. At this time there was little knowledge on how to ... measures to reduce seabird bycatch levels. This resulted in the development and operational trialing of ... International) Title: DEVELOPMENT OF EFFECTIVE MITIGATION TO REDUCE SEABIRD MORTALITY IN THE ICEFISH ...
Meeting Document : WG-IMAF-09/15 : Author(s): B. Sullivan (BirdLife International), J. Clark (United Kingdom), K. Reid (Secretariat) and E. Reid (BirdLife International)