Результаты поиска

1. The recent decline in recruitment of Gobionotothen gibberifrons in the South Shetland Islands (CCAMLR Subarea 48.1)

   recruitment of G. gibberifrons was normal. Recruitment began to decline substantially at the turn to the 2000 ... Abstract:  Commercial exploitation of fish stocks around Elephant Island and the lower South ... Shetland Islands ceased after the 1989/90 season. One of the larger and most abundant species in the area ... perturbations on a fish stock by recruitment failure as one of them. Data from the 1980’s and 1990’s (1983, 1985 ...

   Meeting Document : WG-FSA-12/20 : Автор(ы): K.-H. Kock (Germany) and C.D. Jones (USA)

2. Stock structure of Antarctic toothfish in Statistical Area 88 and implications for assessment and management

   Abstract:  We review the stock structure of Antarctic toothfish in Statistical Area 88 with the ... aim of characterising the likely stock boundaries relative to stock assessments. We include ... biological stocks with limited mixing, especially at adult stages: a Ross Sea Region stock and an Amundsen ... complex of SSRU 88.2H. Key information needs to further understand stock structure include characterising ...

   Meeting Document : WG-SAM-14/26 : Автор(ы): S.J. Parker, S.M. Hanchet and P.L. Horn (New Zealand)

3. Satellite tracking of black-browed and light-mantled sooty albatrosses from Heard Island and potential interactions with fisheries

   Abstract:  The purpose of this document is to inform CCAMLR of the results of a satellite tracking ... program on black-browed albatrosses and light-mantled sooty albatrosses at Heard Island (Division 58.4.2 ... ). This was the first time the movements of either species from the island had been studied. Ten black ... foraged on the shelf break within 150 km of Heard Island, and focused 75% of their foraging time in waters ...

   Meeting Document : WG-FSA-05/14 : Автор(ы): K. Lawton, R. Kirkwood and G. Robertson (Australia)

4. An underwater setting method for surface longliners, to minimise the accidental/incidental capture of seabirds

   Abstract:  The accidental/incidental capture of seabirds by longline gear may be causing a ... significant decline in the numbers of some species (most notably albatross Diomedea sp) in the Southern Oceans ... . In response to the sea bird problem, the New Zealand Department of Conservation funded a programme in ... trials to the setting depth of 1.5 metres. A second trial was undertaken with the backward facing U tube ...

   Meeting Document : WG-FSA-97/53 : Автор(ы): Walshe, K.A.R., Parnes, P.

5. Spatial distribution and population structure of juvenile Antarctic toothfish (Dissostichus mawsoni) in the South Shetland Islands (Subarea 48.1)

   between 22 and 78 cm TL, equally distributed between sexes, most of them with gonads at immature stage of ... structure of juvenile D. mawsoni caught during bottom trawl survey on the shelves around the South Shetland ... abundant between 100 and 300 m depth. The sampled population was composed of 150 specimens measuring ... factor. Based on counts of annual growth increments from sagittal otolith sections, age estimates ranged ...

   Meeting Document : WG-FSA-18/45 : Автор(ы): M. La Mesa, E. Riginella and C.D. Jones

6. Analysis of the sea-ice concentration (SIC) in Subarea 48.6, research blocks 2, 3, 4 and 5 with sea-surface temperature (SST) and statistical models

   , where the limit of navigability for fishing vessels is set at 20 % SIC, was calculated. It should become ... Abstract:  An Analysis of the sea ice concentration (SIC) in research blocks 2,3,4, and 5 of ... 2019 was also as high as in 2016 but around the west of block 5 the SIC in 2019 was much lower than in ... and vice versa. The chart of the SIC as per HYCOM corresponds well to the SIC derived from data by the ...

   Meeting Document : WG-SAM-2019/15 : Автор(ы): T. Namba, R. Sarralde, H. Pehlke, K. Teschke, T. Brey, S. Hain, T. Ichii, T. Okuda, S. Somhlaba and J. Pompert

7. First Annual Report of the CCAMLR Otolith Network, 2002

   Abstract:  This report presents results from the first exchange of otoliths under the auspices of ... held at the Centre for Quantitative Fisheries Ecology (CQFE), Old Dominion University, United States ... , from 23 to 27 July 2001. The National Institute of Water and Atmospheric Research, Nelson, New Zealand ... ; Central Ageing Facility, Victoria Australia; and CQFE, each provided a sample of otoliths, processing and ...

   Meeting Document : WG-FSA-02/51

8. Estimation of the fishery–krill–predator overlap

   at nine levels of spatio-temporal resolution and using normal, exponential and uniform foraging ... Abstract:  Work undertaken during the intersessional period has enabled better use of the krill ... fishery data, and a comparison between the three existing indices of fishery-krill-predator overlap used ... the level of overlap in recent years (1995-98) than estimated with either the catch in the CPD or the ...

   Meeting Document : WG-EMM-99/11 : Автор(ы): Secretariat

9. A method to evaluate selection of Antarctic krill in towed fishing gears

   ) apply different trawl designs. Very little information exists on the size selectivity of E. superba ... . Size selectivity describes a given trawls designs ability to catch different sizes of a population and ... is valuable information for the management of harvested marine stocks. Size selectivity data is ... traditionally collected during timely and costly fishing experiments in the field where one design is tested at ...

   Meeting Document : WG-EMM-13/34 : Автор(ы): L.A. Krag, B. Herrmann (Denmark), S. Iversen, A. Engås, S. Nordrum and B.A. Krafft (Norway)

10. Using stationary acoustic platforms to assess precision and accuracy of acoustical krill surveys

    issues of krill migrating too close to the surface to be acoustically detected, as well as potential ... issues of diel changes in acoustic scattering strengths. However, due to logistic constraints, acoustic ... effects of krill vertical distribution on survey results. The Institute of Marine Research, Norway has on ... a regular basis deployed stationary platforms in the main area for commercial krill harvesting at ...

    Meeting Document : WG-EMM-2019/32 : Автор(ы): T. Klevjer, G. Skaret and B.A. Krafft

Страницы