Результаты поиска

1. By-catch in Australian fisheries in Divisions 58.5.2, 58.4.2 and 58.4.3 during the 2002/03 and 2003/04 fishing seasons

   Abstract:  This paper presents bycatch information for the Australian fisheries in Divisions ... 58.5.2, 58.4.2 and 58.4.3, with estimates of total removals by fishing ground for the 2002/2003 and 2003 ... /2004 seasons. Bycatch in the trawl fisheries was low, approximately 1 to 2% of the total catch (target ... plus bycatch). Bycatch in the longline fisheries was higher, ranging from 8% to 14% of the total catch ...

   Meeting Document : WG-FSA-04/68 : Автор(ы): E. van Wijk and R. Williams (Australia)

2. Summary of the seabird and marine mammal observations during observed toothfish (Dissostichus spp.) longline fishing operations in CCAMLR Subareas 88.1 and 88.2

   operations that targeted toothfish (Dissostichus spp.) in 2001–03 in Sub-areas 88.1 and 88.2. The ... distribution of fishing effort was dictated by the presence of sea ice and there are differences in the seabird ... composition reported each year because of variation in the spatial distribution of the seabirds. At-sea ... identification of some species is difficult and some of the species that were reported from outside their known ...

   Meeting Document : WG-FSA-04/42 : Автор(ы): S.J. Baird (New Zealand)

3. Seabird mortality in the Japanese tuna longline fishery around Australia, 1988–1995

   Abstract:  Large numbers of seabirds are killed each year within the Australian Fishing Zone (AFZ ... ) by Japanese longline vessels targeting tuna. In recent years the estimated rate of seabird bycatch in ... the AFZ has been in the order of 0.15 birds 1000 hooks, translating to mortalities of 1000-3500 birds ... observed hauled aboard the vessels. The observed seabird catch rate varies annually, seasonally and ...

   Meeting Document : WG-FSA-98/31 : Автор(ы): N. Brothers, R. Gales and T. Reid (Australia)

4. An acoustic survey of Antarctic krill on the South Georgia shelf, CCAMLR Subarea 48.3, in January 1992

   the opportunity was taken in 1992 to produce a krill biomass estimate as a by-product of a fish stock ... operating at 38 kHz and 120 kHz. The results have been analysed for all straight sections of track when the ... ship's speed exceeded 7 knots and when the ship was over the shelf around the main island of South ... Georgia. The appearances of echoes on echo charts were used to decide which echoes to include in krill ...

   Meeting Document : WG-EMM-96/42 : Автор(ы): Everson, I., Goss, C.

5. ANTARCTIC FUR SEAL PUP PRODUCTION AND POPULATION TRENDS IN THE SOUTH SHETLAND ISLANDS WITH SPECIAL REFERENCE TO SOURCES OF ERROR IN PUP PRODUCTION ESTIMATES

   Abstract:  This paper reports the results of a ground survey of fur seal colonies from in the ... confidence limits on pup production. Total pup production was 7,602 (±103) pups down 24.4% from the last ... census in 2001/02 (10,057 ±142 pups born). Dead pups accounted for 1.64% of the total. A comparison with ... previous censuses over a 20yr period (1987, 1992, 1994, and 1996) indicates the rate of increase in fur ...

   Meeting Document : WG-EMM-PSW-08/14 : Автор(ы): M.E. Goebel (USA), D.E. Torres C. (Chile), A. Miller, J. Santora, D. Costa (USA) and P. Diaz (Chile)

6. DEVELOPMENT OF A SPATIALLY EXPLICIT AGE-STRUCTURED STATISTICAL CATCH-AT-AGE POPULATION DYNAMICS MODEL FOR MODELLING MOVEMENT OF ANTARCTIC TOOTHFISH IN THE ROSS SEA

   a preliminary development version of this model to Antarctic toothfish in the Ross Sea as an age and ... -based population age structure in a spatially explicit manner. The model is parameterised by both ... population processes (i.e., ageing, recruitment, and mortality), as well as movement processes defined as the ... designed to be flexible, allow for the estimation of both population and movement parameters based on local ...

   Meeting Document : WG-SAM-08/14 : Автор(ы): A. Dunn and S. Rasmussen (New Zealand)

7. The biology and ecology of mackerel icefish, Champsocephalus gunnari – an Antarctic fish species that lack haemoglobin

   Abstract:  The mackerel icefish (Champsocephalus gunnari) is a prominent member of the coastal ... fish fauna of the Seasonal Pack-ice Zone and the islands north of it. Separated into a number of stocks ... , its distribution ranges from the Scotia Arc region, namely South Georgia, in the Atlantic Ocean sector ... to the Kerguelen-Heard Plateau in the Indian Ocean sector. Mackerel icefish have been heavily ...

   Meeting Document : WG-FSA-96/24 : Автор(ы): Everson, I., Kock, K.-H.

8. Ocean acidification and the Southern Ocean

   , including the Southern Ocean. The relative undersaturation of CaCO3 in the Southern Ocean suggests that ... organisms such as the pteropods that form the base of much of the Southern Ocean food chain. Orr et al (2005 ... ) predicted that under the Intergovernmental Panel on Climate Change (IPCC) IS92a warming scenario, which ... assumes “business as usual”- emissions leading to 778 ppm of CO2 in the atmosphere by 2100- aragonite will ...

   Meeting Document : CCAMLR-XXIX/BG/24 : Автор(ы): ASOC Observer

9. A feedback approach to Ecosystem Based Management: model predictive control of the Antarctic krill fishery

   Abstract:  The Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) aims ... to develop a feedback approach to aid Ecosystem Based Management (EBM) of the Antarctic krill fishery ... in the Southern Ocean. Feedback approaches in fisheries management usually include harvest control ... rules based on their predicted performance in a model of the controlled system. Here we use MPC to ...

   Meeting Document : WG-EMM-12/19 : Автор(ы): S. Hill and M. Cannon (United Kingdom)

10. Trophic interactions and population trends of killer whales (Orcinus orca) in the southern Ross Sea

    orca) are reported for the vicinity of Ross Island, Ross Sea, Antarctica, between 2002 and 2010 ... . Updating an earlier report, the frequency of sightings and the number of individuals per sighting of Ross ... coincident with a decrease in the number and size of an important prey: Antarctic toothfish (Dissostichus ... important to the whales, a relationship with potential parallels to that known between well-studied fish ...

    Meeting Document : WG-FSA-12/P03 : Автор(ы): D.G. Ainley and G. Ballard

Страницы