Resultados de la búsqueda
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Integrating Count Effort by Seasonally Correcting Animal Population Estimates (ICESCAPE): a method for estimating abundance and its uncertainty from count data using Adélie penguins as a case study
Paper Title: Integrating Count Effort by Seasonally Correcting Animal Population Estimates ... animal count data to a common reference point of breeding chronology for species with a complex temporal ... function of sampling availability. ICESCAPE (Integrating Count Effort by Seasonally Correcting Animal ... IntegratIng Count effort by SeaSonally CorreCtIng anImal PoPulatIon eStImateS (ICeSCaPe): a method for ... animal count data to a common reference point of breeding chronology for species with a complex temporal ... function of sampling availability. ICESCAPE (Integrating Count Effort by Seasonally Correcting Animal ... for estimating abundance and its uncertainty from count data Introduction Counts of animal ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 213–227 : Autor(es): McKinlay, J., C. Southwell and R. Trebilco
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Demographic characteristics of the Adélie penguin population on Béchervaise Island after 12 years of study
after 12 years of study Abstract / Description: Demographic parameters (age-specific survival rates ... eastern Antarctica after 12 years of monitoring under the CCAMLR Ecosystem Monitoring Program (CEMP). A ... extended to include ages up to 19 years since Adélie penguins elsewhere have been shown to live up to 20 ... . An expected value for mean penguin breeding success over 20 years was also calculated. This value ... gg ed (m in im um a ge 4 y ea rs ) 76 54 59 30 20 28 10 25 17 30 (a ) N um be rs ... at year 0, x is years and r is the annual rate of population increase (Figure 1). In terms of ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 53–74 : Autor(es): Clarke, J., L.M. Emmerson, A. Townsend and K.R. Kerry
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Fishing ground selection in the Antarctic krill fishery: trends in patterns across years, seasons and nations
years, seasons and nations Abstract / Description: Patterns of fishing ground selection were ... remained relatively constant in Subareas 48.2 (March–May) and 48.3 (June–August). In 25 years of krill ... seasons and calendar years: CCAMLR fishing seasons start on 1 December and end on 30 November. For ... 1995/96. If the years are simply expressed as a single year, e.g. 1996, then these refer to calendar ... Science, 3: 13–30. Hewitt, R.P., D.A. Demer and J.H. Emery. 2003. An eight-year cycle in krill biomass ... Fishing ground selection in the AntArctic krill Fishery: trends in pAtterns Across yeArs, seAsons And ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 117–141 : Autor(es): Kawaguchi, S., S. Nicol, K. Taki and M. Naganobu
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Catch per unit effort (CPUE) data from the early years of commercail krill fishing operations in the Atlantic sector of the Antarctic
Paper Title: Catch per unit effort (CPUE) data from the early years of commercail krill fishing ... the period 1975/76 to 1987/88. Comparisons are carried out between subareas in single years, between ... years on a subarea and area basis, and between oceanic and shelf regions. Results show that the CPUE may ... differ between subareas, years and shelf/oceanic regions. Obviously, a consistent pattern of CPUE values ... and for different years (a to g). (e) Season 1984185 12 10 15 20 25 30 35 40 45 50 55 60 65 ... et al. 10 20 30 40 50 60 70 Total length (mm) 10 20 30 40 50 60 70 Total length (mm) Figure ... Total length (mm) (f) Season 1985186 10 15 20 25 30 35 40 45 50 55 60 65 Total length (mm) (g ... ) Season 1987188 l 1 I 10 15 20 25 30 35 40 45 50 55 60 65 Total length (mm) Figure 6 (continued ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 31–50 : Autor(es): Siegel, V., V. Sushin and U. Damm
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Target strengths of krill at 136 and 20 kHz
Paper Title: Target strengths of krill at 136 and 20 kHz Abstract / Description: Estimation of ... the mean single-krill target strengths range from-71 to-77 dB at 20 kHz. Trawl hydroacoustic method ... -75.7 53.7 4.9 1.1 16:20 1.3 -74.3 -75.4 53.9 3.9 1.19 20:30 0.14 -77.5 -69.0 54.2 5.7 1.23 Maude ... ) 0.72 Method 150 % 24 21 18 15 I2 . 9 6 3 0 10 20 30 40- 50 Figure 1 ... composition. Elephant Island area. January, 1985. 151 30 20 10 o % MM \. i ,~, Figure 3 ... . Krilllength composition. Bouvet Island area. December, 1979. 30 % 20 10 o 30 34 33 42 46 50 Figure ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 141–157 : Autor(es): Kasatkina, S.M.
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A first attempt at an assessment of the Patagonian toothfish (Dissostichus eleginoides) resource in the Prince Edward Islands EEZ
sensitivity tests are shown in Table 5, together with those for projections to 2010 and to 2020 under a ... d 24 2 97 (2 0 20 1; 3 4 54 3) 30 0 79 -2 .9 36 84 8 0. 39 2 0. 02 2 0 ... biomass projections for Division 58.5.2 biological parameters 40 000 30 000 20 000 10 000 0 20 000 ... 15 000 10 000 5 000 0 25 000 20 000 15 000 10 000 5 000 0 40 000 30 000 20 000 10 000 0 ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 11–32 : Autor(es): Brandão, A., D.S. Butterworth, B.P. Watkins and D.G.M. Miller
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Precautionary spatial protection to facilitate the scientific study of habitats and communities under ice shelves in the context of recent, rapid, regional climate change
highlights how: CCAMLR Science, Vol. 20 (2013): 139–151 139 PRECAUTIONARY SPATIAL PROTECTION TO ... mass loss is iceberg calving. Typically, a shelf front will extend forward and it may be years or ... of the George VI ice shelf (67.840°W 71.692°S) which lost ~993 km2 over a number of years between ... volume of deep water in Pine Island Bay has increased in recent years. Faster basal melting under the ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 139–151 : Autor(es): Trathan, P.N., S.M. Grant, V. Siegel and K.-H. Kock
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Management and assessment options for the crab fishery around South Georgia
together with the requirements of Article I1 of the CCAMLR Convention. The objectives in sub-paragraph 3 ... Article I1 of the CCAMLR Convention. In the final section, we consider the assessment methodologies and ... exploitable part of the stock. The target for the Alaskan king crab is between 20 and 60% depending on ... of Article I1 may be paraphrased as follows: (i) to prevent a decrease in the abundance of the ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 193–202 : Autor(es): Basson, M. and D.D. Hoggarth
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Target strengths of Antarctic krill (Euphausia superba)
kHz TS (dB} at 120 kHz Event Mean no. - no. 1 7 1 9 20 26 28 30 36 37 43 47 50 52 54 ... SC-CAMLR-VII/BG/30 TARGET STRENGTHS OF ANTARCTIC KRILL ... crustaceans convinced the authors of the need to perform all measurements on the animal of interest, E ... object animal by laboratory measurements of density and longitudinal sound speed, among others, 266 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 265–279 : Autor(es): Everson, I., D.G. Bone, J.L. Watkins and K.G. Foote
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Status of krill target strength
aggregations of live euphausiids and should not be affected by a frequent cause of bias in single-animal ... on both animal size and transmit frequency, notwithstanding admitted shortcomings. Some recent single ... -animal measurements of target strength for live euphausiids and euphausiid-related species, made under ... number density were performed at 30 and 20 kHz. Measurements at 30 kHz were performed near Bouvet Island ... effects discussed earlier in this article and differences in animal type), the structure exhibited in the ... should not be affected by a frequent cause of bias in single-animal measurements, namely thresholding ... . The theoretical estimates show a non-monotonic dependence of target strength on both animal size and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 101–126 : Autor(es): Foote, K.G., D. Chu and T.K. Stanton