Resultados de la búsqueda

1. Age–length composition of mackerel icefish (Champsocephalus gunnari, Perciformes, Notothenioidei, Channichthyidae) from different parts of the South Georgia shelf

   the age of 2-3 years. It has been found that, by number, recruits represent the largest part of the ... only observed in five out of 20 abundant year classes at South Georgia (1975,1981,1985,1986 and 1988 ... be attributed to a strong year class which remained abundant over the years (Frolkina, 1993). At ... up to 7 years old (Figures 3 and 4). As a rule, 3-year-old, and sometimes 4-year-old fish dominated ... sometimes observed to be completely absent for several years (e.g. 1982 year class) (Figure 4). A ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 133–146 : Autor(es): Frolkina, G.A

2. Low breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season

   fewer local trips and both sexes spent longer at sea than in years of higher breeding success. Meal ... seven days during mid-January each year at longitude 60°E. Chick Growth (CEMP A7) About 30 chicks ... trips and both sexes spent longer at sea than in years of higher breeding success. Meal masses brought ... Island has ranged from 0.05 to 1.06 chicks creched per nest over the nine years of the program. The ... years. Two other years, 1994/95 and 1995/96, also experienced low breeding success rates of 0.05 and ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 151–167 : Autor(es): Irvine, L.G., J.R. Clarke and K.R. Kerry

3. The foraging range of Adélie penguins at Béchervaise Island, Mac. Robertson Land, Antarctica, and its overlap with the krill fishery

   their major food sources. File:  20-Kerry-et-al.pdf ... Toyocom 2038 PTf set on a 50s repeat transmission cycle. These were packaged together with their ... , together with the position of the continental shelf break and the locations of previous krill fisheries ... in those years where ice conditions allow the fishing fleet to operate further south or in poor ... 1396B M 19 January 1992 1 5 275 none feeding growing chick only 1 to 5 km from colony 20 January 1992 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 337–344 : Autor(es): Kerry, K.R., J.R. Clarke and G.D. Else

4. A balanced model of the food web of the Ross Sea, Antarctica

   efficiency) and all groups together was 1.7%, and for diet fractions was 0.6%. Large but not implausible ... recent year (1990–2000). The focus of the model is on the role of Antarctic toothfish in the food web ... rate, growth efficiency) and all groups together was 1.7%, and for diet fractions was 0.6%. Large but ... bring together varied field data and literature information to give a self-consistent picture of the ... shallower than 500 m, 41% of the region has depths 500–1 000 m, and 30% is deeper than 1 000 m. This ... demersal fish) and sampling methodol- ogy (e.g. benthic organisms by size). Organisms grouped together ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 1–31 : Autor(es): Pinkerton, M.H., J.M. Bradford-Grieve and S.M. Hanchet

5. Composition and characteristics of ichthyofauna in pelagic waters of South Georgia (Subarea 48.3)

   and Shag Rocks over several years. This paper, together with summaries of results of bottom ... caught years from 1 to 20% (Figure 9, Table 4). diurnally in the 60 to 85-metre near-bottom layer ... Georgia 30 30 - 25 20 % Gij 25 n7kaL Gij 28 5 - 0 0 0 0 0 0 0 0 0 0 c ) o ~ T - ~ c ) o ~ T ... , 20 1 B Gii 30 Length (mm) Figure 11: Length composition of M. microps. Frolkina et al ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 125–164 : Autor(es): Frolkina, G.A., M.P. Konstantinova and I.A Trunov

6. Results of fish stock assessment survey, South Georgia region, November - December 1986

   /85 year classes. Coefficients of variation ranged from 67.9% (Notothenia squamifrons) to 12.6% (C ... ' 1"0/ ,9, o 10 20 30 40 LENGTH, CM 50 Figure 3. Length frequency distribution, li. rossii ... :::> 0 w ~ 20 u... 10 o ( ~, o 10 20 30 40 50 LENGTH, CM Figure 5. Length frequency distribution ... Z w :::> 0 w Cl::: ~ 50 o 'I' (,\ (I'Y'\(II'¥I' '\{'\ o 10 20 30 40 50 LENGTH, CM Figure ... w D- >- ~ / I-' 0'l U lJ1 Z w 50 :::::> 0 w 0:::: LL- 25 o , , , , o 10 20 30 40 50 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 143-183 : Autor(es): Gabriel, W.L.

7. Fitting Euphausia superba into Southern Ocean food-web models: a review of data sources and their limitations

   ) method has been in use for 20 years but there have been various attempts to use other analytical ... occurred year- round throughout Antarctica, and regularly with an estimated ~20% of the stock deeper than ... length) and relatively long lived (up to 7 years), can swim fast and maintain their position in the ... -frequency distribution reveal that there is widespread undersampling of juvenile krill ~20 mm long ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 219–245 : Autor(es): A. Atkinson, S. Nicol, S. Kawaguchi, E. Pakhomov, L. Quetin, R. Ross, S. Hill, C. Reiss, V. Siegel, G. Tarling (submitted to the 2008 Joint CCAMLR-IWC Workshop)

8. Potential interactions between wandering albatrosses and longline fisheries for Patagonian toothfish at South Georgia

   , satellite-tracking, South Georgia, wandering albatross INTRODUCTION Over the last 20 years wandering ... have used, with permission of the parties concerned, CCAMLR data for the years 1990/91 to 1993/94 ... Island for their assistance in the research on satellite tracking of D. exulans in recent years ... exulans at Bird Island, South Georgia. Journal of Animal Ecology, 59: 773-794. de la Mare, W.K. and ...

   Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 101–110 : Autor(es): Croxall, J.P. and P.A. Prince

9. The ecosystem approach to managing fisheries: achieving conservation objectives for predators of fished species

   20-30 years, wl~ich is the critical period over which the system should not be irreversibly changed ... zero after 20 years. Prey 2 is more abundant (-3x) than Prey 1 in the absence of fishing and then ... inainmals - M AG Americas, 2000) Age at maturity (years) Plus class Natural mortality (year-]) Body ... years (see text for details). Year Figure 7: Individual productivity for each predator in the trial ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 37–64 : Autor(es): Constable, A.J

10. Size and density of krill layers fished by a Japanese trawler in the waters north of Livingston Island in January 1988

    10 20 30 40 50 60 70 80 NET V 0 L U MED ENS IT Y ( g. m-3 ) Figure 3: Frequency distributions of ... -operative survey between RV Kaiyo Maru and a Japanese trawler was conducted from 17 to 20 January 1988 on ... the fishing ground north of Livingston Island (Figure 1). A total of 30 experiments on TS measurement ... including 30 co-operative experiments, was provided by the trawler. The number of krill aggregations per ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 339–345 : Autor(es): Endo, Y. and Y. Shimadzu

Páginas