Resultados de la búsqueda
-
Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longlines
aimed at providing two indirect methods of assessment of depredated biomass over an 11-year period (2003 ... Paper Title: Comparison of two methods to assess fish losses due to depredation by killer whales ... interaction over access to resources, which often includes a combination of socio-economic, ecological and ... conservation issues. However, estimating the amount of resource depredated can be especially challenging when ... (southern Indian Ocean). This study aimed at providing two indirect methods of assessment of depredated ... 0.2° cells, including only cells with at least four longlines and a proportion of grena- diers ... much as in early years, and thus the number of vessels operating at the same time lowered. This means ... (a) and correlation coefficient (R2) are provided at the top left. The size of circles indicates the ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 1–14 : Autor(es): Gasco, N., P. Tixier, G. Duhamel and C. Guinet
-
Distribution of the Soviet krill fishing fleet in the South Orkneys area (Subarea 48.2) during 1989/90
aggregations. A maximum CPUE (3.8 tonnes/hour) was recorded at the beginning of the period, with a subsequent ... Paper Title: Distribution of the Soviet krill fishing fleet in the South Orkneys area (Subarea ... 48.2) during 1989/90 Abstract / Description: The results of an analysis of haul-by-haul catch ... statistics from the Soviet krill fishing fleet during the 1989/90 season (sample of 3 614 hauls for the ... area, including haul-by-haul data (i.e. the date, coordinates at trawling start, time of trawling ... vessels) aimed at finding and determining the location and depth of krill swarms. After completing an ... fishing fleet (Figure la). Such a situation is characteristic of other seasons, and at a coarse scale ... location near the northern tip of Coronation Island. At the beginning of November catches were ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 51–62 : Autor(es): Sushin, V.A
-
Age and growth of Antarctic euphausiacea (crustacea) under natural conditions
Paper Title: Age and growth of Antarctic euphausiacea (crustacea) under natural conditions ... Abstract / Description: Five species of Antarctic euphausiid crustaceans were studied from the Antarctic ... regressions. No difference in growth of krill was observed between the Antarctic Peninsula area and the ... shorter life span than females, while their growth rate is similar. A short description of the life cycle ... generation time of each species is given. In general, Antarctic euphausiids seem to remature and spawn at ... - 369 - SC-CAMLR-VI/BG/24 AGE AND GRcwrH OF ANTARCTIC ... EUPHAUSIACEA (CRUSTACEA) UNDER NATURAL CONDITIONS* V. siegel1 (Federal Republic of Germany) Abstract ... Five species of Antarctic euphausiid crustaceans were studied from the Antarctic Peninsula and the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 369-370 : Autor(es): Siegel, V.
-
Geographical variation in the diet of the Antarctic fur seal Arctocephalus gazella
investigated at different localities of the Antarctic Peninsula (Cierva Point and Hope Bay), South Shetland ... that most contributed to the diet of the Antarctic fur seals at the Antarctic Peninsula whereas ... Abstract: The diet of non-breeding male Antarctic fur seals Arctocephalus gazella was ... (Deception Island and Potter Peninsula) and South Orkney (Laurie Island) islands, by the analysis of 438 ...
Meeting Document : WG-EMM-02/10 : Autor(es): R. Casaux, A. Baroni, F. Arrighetti, A. Ramón and A. Carlini (Argentina)
-
A methodology for estimating total finfish by-catch of the Area 48 krill fishery
. Estimates of bycatch rates per tonne of catch were made at a family level for Channichthyidae, Nototheniidae ... and Notothenia rossii were used to convert total bycatch numbers to biomass at age of 50% maturity ... species respectively. Family specific biomass estimates at age of 50% maturity were then compared to ... available abundance estimates of Channichthyidae and Nototheniidae species at a family level, and at a ...
Meeting Document : WG-EMM-12/29 : Autor(es): T. Peatman, S.M. Martin (United Kingdom), O.R. Godø (Norway) and R.C. Wakeford (United Kingdom)
-
Accumulation of fishing debris, plastic litter and other artefacts on Heard Island and Macquarie Island, Southern Ocean
summer 1987-88, and 1989 respectively. These surveys were carried out at the same sites of previous ... surveys in 1986-87 at Heard Island, and 1988 at Macquarie Island. The minimum rate of artefact ... catchment area. Plastic litter was a major component of the debris at both islands. Fisheries related debris ... at Macquarie Island. Author(s): D.J. Slip and H.R. Burton (Australia) Title: Accumulation of ...
Meeting Document : CCAMLR-VIII/BG/11 : Autor(es): D.J. Slip and H.R. Burton (Australia)
-
Community structure of epipelagic macrozooplankton in the Ross Sea
located at 78°S, 175°E. Total of 13 taxa occurred at all stations and mean of 7.4 taxa were occurred in ... each sample. There was no marked difference in numbers of taxa occurred at each station and layer ... except at 0 ~ 50 m of 72°S, 175°E, where euphausiids only occurred. Copepods and chaetognaths dominated ... along 175°E. Pteropods comprised high percentage of total abundance at the southernmost stations along ...
Meeting Document : WG-EMM-07/34 Rev. 1 : Autor(es): Y. Watanabe, S. Sawamoto, T. Ishimaru and M. Naganobu (Japan)
-
Review of CCAMLR activities on monitoring marine debris in the Convention Area
. The number of debris items has increased at Bird Island in 2006 and Signy Island in 2007, but ... decreased at King George Island in 2007. The majority of items reported were packaging materials, fishing ... gear and wood. Packaging items make up the majority of debris items reported from all three seasons at ... at Bird Island increased dramatically in 2007 with 58 reports of Antarctic fur seal entanglements ...
Meeting Document : SC-CAMLR-XXVI/BG/10 : Autor(es): Secretariat
-
Do fish prey size affect the foraging patterns and breeding output of the Antarctic shag Phalacrocorax bransfieldensis?
number of specimens of the smallest fish species, Harpagifer antarcticus, consumed at that colony ... spent significantly more time in foraging activities. Although at the beginning of the study the number ... of chicks per nest was similar in the three colonies, the breeding output at Py Point was markedly ... Abstract: Concurrent information on diet composition, foraging patterns and breeding output of ...
Meeting Document : WG-EMM-02/4 : Autor(es): R. Casaux and A. Baroni (Argentina)
-
Depth distribution and spawning pattern of Dissostichus eleginoides over the winter period in Subarea 48.3
statistically significant pattern of changing mean length at depth with month was found in both 1997 and 1998 ... seasons, suggesting movement of animals both up and down slope at particular times of year. Months with a ... Abstract: Trends in mean length and maturity stage of toothfish were examined using observer data ... high mean length at depth are May and August, and with a low mean length at depth are April and July ...
Meeting Document : WG-FSA-98/58 : Autor(es): D.J. Agnew, K. Kerkieta, L. Heaps, C. Jones, J. Pearce and A. Watson (United Kingdom)