Resultados de la búsqueda
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Spatially explicit population dynamics models for Antarctic toothfish in the Ross Sea region
dynamics of spatial heterogeneity of the population along with age structure, movement and reproductive ... stage transition in a holistic framework. Using this software, three spatially explicit age-structured ... were consistent with the results of tagging studies and fits to the other observations (age ... 5 10 15 20 25 30 Age (years) 1.0 0.8 ... (years) 0 5 10 15 20 25 30 0 ... rate of 1 All age by one year (30+ remain 30+) 1 - - - Total 16 processes 34 Mormede et al ... al. 20 one or the other of these methods are available in various stock assessment modelling ...
Science Journal Paper : CCAMLR Science, Volume 21 (CCAMLR Science, Volume 21) : 19–37 : Autor(es): Mormede, S., A. Dunn, S. Hanchet and S. Parker
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Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea
been validated. The maximum estimated age was 14 years, but this should be regarded as a conservative ... ]), where L t is the pelvic length (PL) in centimetres at age t years. Applying this growth curve to the ... ages at maturity of 6–7 years for males and 8–11 years for females. These estimates are near the middle ... Paper Title: Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea Abstract ... determine Pelvic length (cm) 0 20 40 60 80 100 T ho rn le ng th ( m m ) 0 2 4 6 8 10 12 14 ... aged thorns, 14 (9%) were judged unreadable. The readability of most thorns (80%) was scored as 3 or ... the Ross Sea P el vi c le ng th (c m ) (c) (b) (a) 0 2 4 6 8 10 12 14 0 20 40 60 80 ... ( cm ) 0 20 40 60 80 Males (N = 58) With outliers Without outliers E ti t d 0 2 4 6 8 10 12 14 ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 183–194 : Autor(es): Francis, M.P. and C. Ó Maolagáin
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e-sc-xxiii.pdf
... . It was convened by Dr S. Hanchet (New Zealand). WG-FSA-SAM met from 5 to 9 July in Siena, Italy ... two years by observers on board krill trawlers operating in Subarea 48.3 (South Georgia) (Annex 4 ... in the manual’s revision. 2.14 Unlike previous years, this year WG-FSA has not comprehensively ... ...................................................................... 17 Future Work of WG-EMM ................................................................ 20
application/pdf attached to:SC-CAMLR-XXIIIMeeting Report : SC-CAMLR-XXIII
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e-sc-xx-a4.pdf
... operators (WG-EMM-01/39 and 01/ 44). Processed Product Yield (%) CF Whole 80–90 1.11–1.25 Peeled ... suggested and it was expected that a market price will be established in the next two years. 2.26 The ... rule (select colonies where data are available >80% of the years of the study) made greater use of ... fishing in certain areas or avoiding other areas. Earlier Years 2.9 In the 1999/2000 split-year
application/pdf attached to:WG-EMM-01Meeting Report : WG-EMM-01
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Length-age composition of the Patagonian toothfish, Dissostichus eleginoides, from the Kerguelen Island area
this period were located in the west shelf area (48°30’- 49°30’S and 66°50’- 67°20’E). Total catch was ... concentrated in the north shelf area (47°10’- 47°30’S and 66°50’- 67°20’E). Total catch was about 5.2 x 103 ... fluctuate considerably, mean fish length was 76.0- 86.6 cm. Fish of two to 14 years old age groups were most ... abundant in catches, mean age was 8.2- 9.8 years. In the 1991/92 season fishing for the species was ...
Meeting Document : WG-FSA-92/08 : Autor(es): V.G. Prutko and V.N. Chikov (Ukraine)
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Effect of orientation on broadband acoustic scattering of Antarctic krill Euphausia superba: implications for inverting zooplankton spectral acoustic signatures for angle of orientation
and video footage from several Antarctic krill were carried out to determine the effect of animal ... Classification (CMVC) approach, using generic and animal-specific theoretical and empirical model spaces. The ... animal-specific empirical model space was best able to invert for angle of orientation. The CMVC ... orientation based on broadband echoes from individual zooplankton in the field. Author(s): L.V. Martin ...
Meeting Document : WG-EMM-99/41 : Autor(es): L.V. Martin Traykovski (USA), R.L. O’Driscoll (New Zealand) and D.E. McGehee (USA)
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WG-EMM-09
T. Iida (Japan) WG-EMM-09/20 INTEGRATING COUNT EFFORT BY SEASONALLY CORRECTING ANIMAL POPULATION ... Full Name: Working Group on Ecosystem Monitoring and Management Location: Bergen, Norway Date(s ... BIODIVERSITY S. Grant (United Kingdom) WG-EMM-09/10 DEMOGRAPHIC STUDIES OF ANTARCTIC KRILL IN THE SOUTH ORKNEY ... EXPANSION OF THE KRILL FISHERY UP TO THE TRIGGER LEVEL G.M. Watters (USA), S. Hill (United Kingdom), J.T ...
Meeting
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e-sc-xii-a6.pdf
... two years). Variances were slightly lower for cross-sectional data. The differences between methods ... of two successive years for the same population. There was no evidence of either tag or band loss ... Antarctic. 4.33 The proposal in paragraph 4.31 raised two important issues. The first related to the ... “recruitment”. For krill, recruitment into the population refers to krill reaching one year of age
application/pdf attached to:WG-CEMP-93Meeting Report : WG-CEMP-93
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2002 winter and 2002/03 breeding season
years, most individuals observed entangled in debris were juveniles (88% of winter and 81% of summer ... observations), the reasons for this are discussed. Of the entanglements where the animal could be sexed, males ... the potential to entangle wildlife at sea. Author(s): Delegation of the United Kingdom Title ... reported here. The overall number of entanglements showed a decrease from last year of 55% in winter and 67 ...
Meeting Document : SC-CAMLR-XXII/BG/11 : Autor(es): Delegation of the United Kingdom
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A fine-scale model of the overlap between penguin foraging demands and the krill fishery in the South Shetland Islands and Antarctic Peninsula
has been developed. The new index reflects the functional interaction between these two utilisers of ... colonies out to 80, 60 and 20 km (Adklie penguins, chinstrap penguins and gentoo penguins respectively ... analysis, mean foraging distance for chinstrap penguins was increased by 50% (from 20 to 30 km), although ... functional interaction between these two utilisers of the krill resource and is based on a detailed model of ... alimentaires des manchots combinees avec la position des captures. L'analyse met en evidence le fait que le ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 99–110 : Autor(es): Agnew, D.J. and G. Phegan