Search results
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Problems of population age structure determination of Euphausia superba Dana using an example from the Antarctic Peninsula area and adjacent waters
Paper Title: Problems of population age structure determination of Euphausia superba Dana using ... to age groups. It is shown that the size groups of krill are not a seasonal phenomenon, but correspond ... . Hypotheses are formulated regarding the age and growth of E. superba; in addition, data are cited ... factors. Possibilities are outlined for the elucidation of the problem of the age and size structure ... - 227 - SC-CAMLR-V/BG/39 PROBLEMS OF POPULATION AGE ... . The paper addresses the question of whether size groups of E. superba correspond to age groups. It is shown ... regarding the age and growth of E. superba; in addition, data are cited on the growth rates of krill ... are outlined for the elucidation of the problem of the age and size structure of E. superba through the study ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 227-270 : Author(s): Spiridonov, V.A.
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Demography of Antarctic krill in the Elephant Island area (Antarctic Peninsula) during austral summer 2001
, and the absolute index was RI1 = 131.4 * 1000 m-3, which is among the highest values for the past 20 years ... index was RI1 = 131.4 * 1000 m-3 , which is among the highest values for the past 20 years. The high ... of small size classes, one year old juvenile krill was found. Krill density was significantly higher than ... during the past years (between 198 and 230 krill 1000 m-3, i.e. between 40 and 46 m-2 or 11.3 ...
Meeting Document : WG-EMM-01/10 : Author(s): V. Siegel (Germany), B. Bergström (Sweden), U. Mühlenhardt-Siegel (Germany) and M. Thomasson (Sweden)
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Analysis of potential threats from fishing to the objectives of a proposed Ross Sea region MPA
. Ecosystem threats from fishing potentially undermine the requirements of Article II(3) paragraphs ... several years; in this paper we make the underlying logic more explicit, drawing upon new and previously ... threats from fishing potentially undermine the requirements of Article II(3) paragraphs b and c. ... and the USA over several years; in this paper we make the underlying logic more explicit, drawing upon new ...
Meeting Document : SC-CAMLR-IM-I/09 : Author(s): Delegations of New Zealand and the USA
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Preliminary report on biological observations and exploratory fishing data collected in the South Georgia area during the 1985/86 cruise of MT Carina
, Notothenia gibberifrons and N. rossii marmorata. Scales and otoliths were also collected for age ... georgianus, Notothenia gibberifrons and N. rossii marmorata. Scales and otoliths were also collected for age ... was represented by three length groups: 20–24, 32–41 and 42–56 cm. N. gibberifrons was also represented by three ... . P. georgianus was represented by three length groups : 20–24, 32–41 and 42–56 cm ... 0 ___ I I i I I I i i I '/9f£J/86 (XII-!) n-687 2 4 6 8 Age grcups (years) 200 O~~~I~~~I~~~I==~~I==~~ 20 3J 40 50 ... 8 20 30 40 ~ Total length (cm) Length and age frequency distribution of Pseudochaenichthys ... 19f!5/86 (XII-I) n-300 2 4 6 8 10+ Age groups (years) O~~==~,==~==~,===;~~,==~==~,==~~ Figure ... Age groups {years) 0 I I I I I I 3) ~ &) 8) 70 00 Total length (cm) Figure 10 Length and age ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 65-97 : Author(s): Kreft, K. and J. Szynaka
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Proposed initiative to contribute to Ross Sea region MPA research and monitoring activities using pop-up satellite tags and otolith chemistry on Dissostichus mawsoni
is to deploy a total 20 pop-off satellite tags (PSAT) on juvenile toothfish within the General Protection Zone ... of Antarctic toothfish in the southern Ross Sea in 2018/19 (Stevens et al., 2018), and a winter longline survey ... of Antarctic toothfish in the northern region of Subareas 88.1 and 88.2 (Delegation of New Zealand, 2018 ... a total 20 pop-off satellite tags (PSAT) on juvenile toothfish within the General Protection Zone (GPZ ...
Meeting Document : WS-SM-18/16 : Author(s): C.D. Jones
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Fishery Report: Exploratory fishery for Dissostichus spp. in Division 58.4.3b
. Constable. 2003. Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch ... 159 17 50 3 1267 20 1 2007/08 80 7 50 1 157 20 2 2008/09 80 4 50 1 102 80 <1 2009/10 80 2 50 <1 22 ... as exploratory in 2000. That year, the Commission agreed on four exploratory fisheries for Dissostichus spp ... eleginoides ranged from 50 to 180 cm in length, with a broad mode at approximately 80–130 cm (Figure ...
Document : Site Section: Publications
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Notes on the use of virtual population analysis for stock assessment of the mackerel icefish, Champsocephalus gunnari (Lönnberg, 1906) in Subarea 48.3 for the 1990/91 and 1991/92 seasons
techniques, from 1991 back to 1977. The predicted age structure, dominated in recent years by the 1987 year ... back to 1977. The predicted age structure, dominated in recent years by the 1987 year-class (1 year ... -class (1 year olds in 1988), was quite robust, despite the use of various combinations of survey ... proportion of 5 year olds, which was not observed during the survey on Falklands Protector in January 1992 ... . The predicted age structure, dominated in recent years by the 1987 year-class (1 year olds in 1988), was quite ... in the region of 40 to 50% of the fishable biomass (age 2+*) would be composed of 5 year olds. Accordingly, TAC ... index was simply derived as follows: For years y and ages a with both survey indices lay and CPUE ... r U 2 a a (4) where la is the mean survey index at age a over all years and U a is the mean CPUE index at age a over ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 49–79 : Author(s): Parkes, G.
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The YugNIRO expedition in the Indian Ocean sector of the Antarctic and in Lazarev Sea in the summer season of 1989–90: preliminary findings of the oceanographic research
Abstract: In reference to the YugNIRO antarctic expedition in the season of 1989/90, information ... in the marginal /epicontinental/ Antarctic seas were most favourable in Cooperation Sea (long. 55-80° East ... Ocean sector of the Antarctic and in Lazarev Sea in the summer season of 1989–90: preliminary findings ... In reference to the YugNIRO antarctic expedition in the season of 1989/90, information on the areas ...
Meeting Document : WG-FSA-90/40 : Author(s): V.A. Bibik, A.V. Dulnev, A.V. Klausov, A.S. Pelevin, E.G. Ryabchikov and V.N. Yakovlev (YugNIRO, USSR)
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Revised proposal for a CCAMLR sponsored research survey to monitor abundance of pre-recruit Antarctic toothfish in the southern Ross Sea
fish age and length classes to be monitored, appropriate survey strata size and location, the number ... , the target fish age and length classes to be monitored, appropriate survey strata size and location ... . As a result of this review, we propose that the first survey be a pilot, with two main objectives ... . As a result of this review, we propose that the first survey be a pilot, with two main objectives: ...
Meeting Document : WG-FSA-11/47 : Author(s): S.M. Hanchet, S. Mormede, S.J. Parker and A. Dunn (New Zealand)
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Adélie penguin colony size predicts south polar skua abundance on Ross Island, Antarctica
, and carrion. We estimated skua abundance at Adélie penguin colonies on Ross Island in two consecutive years ... occupied. Applying our regression model to published mean Adélie penguin colony sizes at 23 locations ... skua abundance at Adélie penguin colonies on Ross Island in two consecutive years and tested ... regression model to published mean Adélie penguin colony sizes at 23 locations predicted 18 000 skuas ...
Meeting Document : WG-EMM-14/55 : Author(s): D.J. Wilson, P.O’B. Lyver (New Zealand), A.L. Whitehead (Australia), T.C. Greene (New Zealand), K. Dugger (USA), B.J. Karl, J.R.F. Barringer, R. McGarry (New Zealand), A.M. Pollard and D.G. Ainley (USA)