Search results
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Status of krill target strength
in single-animal measurements, namely thresholding. Theoretical estimates for the target strength ... of target strength on both animal size and transmit frequency, notwithstanding admitted shortcomings. Some ... recent single-animal measurements of target strength for live euphausiids and euphausiid-re1ated ... in single-animal measurements, namely thresholding. Theoretical estimates for the target strength ...
Meeting Document : WG-KRILL-92/11 : Author(s): K.G. Foote (Norway), D. Chu and T.K. Stanton (USA)
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Significant intra-annual variability in krill distribution and abundance at South Georgia revealed by multiple acoustic surveys during 2000/01
), and in March 2001 (late-season). The surveys were the first in a newly planned five-year series of observations ... surveys in one season would provide information on short-term variability that could be used to set data ... and southwest of the island. Together these surveys provided temporally and spatially extensive coverage around ... with observations from previous years, krill density in the western box in the mid-season survey was less than ... 95% confi dence limit fell below about 15 g m-2 in any year, that year could be considered one ... planned fi ve-year series of observations designed to complement and extend an existing time series ... 1980s). We hoped that conducting several surveys in one season would provide information on short-term ... , examined boxes to the north, northeast and southwest of the island. Together these surveys provided ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 71–82 : Author(s): Brierley, A.S., C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst
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A declining trend in the abundance of Notothenia rossii marmorata and Notothenia gibberifrons observed in fjords in two sites in the South Shetland Islands
gibberifrons observed in fjords in two sites in the South Shetland Islands Abstract / Description: A declining ... in two sites in the South Shetland Islands (Subarea 48.1), is analyzed by a nested ANOVA and demonstrated ... de Mayo I., over a period of eight years from 1983 to 1990 and in waters around Half-Moon I., Moon ... by this method did not utilize a consistent amount of effort between years, the analysis made use of standardized ... OF NOTOTHENIA ROSSII MARMORATA AND NOTOTHENIA GIBBERIFRONS OBSERVED IN FJORDS IN TWO SITES IN THE SOUTH ... of Notothenia rossii marmorata and Notothenia gibberifrons in fjords in two sites in the South Shetland ... of eight years from 1983 to 1990 and in waters around Half-Moon 1., Moon Bay, in 1989. The analysis ... a consistent amount of effort between years, the analysis made use of standardized catch data by expressing ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 263–274 : Author(s): Barrera-Oro, E. and E. Marschoff
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Long-term monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)
is confirmed by the present analysis. Results are compared for one- and two-year-old krill (R1 and R2 ... variability of krill recruitment is confirmed by the present analysis. Results are compared for one- and two ... for the Elephant Island area with regard to the representativeness of the study area (60°-62 o 30´S and 53 o-57 ... o 30´W) for proportional recruit and density indices. Proportional recruitment indices were re ... analysis. Results are compared for one- and two-year-old ]
30'm.ur. H 53"-57'30'3.n.) an2 sbrwcnewax HHaeKcoe nponopqMoHanbHoro ... the distributions of the two juvenile stocks and therefore data from south of 62'30's are not included ... . The R , recruitment value is the proportion of l-year-old animals in the population in that year. 111 a few cases ... Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 19–35 : Author(s): Siegel, V., W. de la Mare and V. Loeb
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Progress report of the CEMP Special Fund project to develop an image processing software tool for analysis of camera network monitoring data
community. We expect to complete a package of software and post-processing code by early 2018. Author ... user community. We expect to complete a package of software and post-processing code by early 2018. ...
Meeting Document : WG-EMM-17/10 : Author(s): C. Southwell, L. Emmerson, K. Newbery, J. Hinke, G. Watters, M. Santos, G. Milinevsky, M. Korczak-Abshire, N. Ratcliffe and P. Trathan
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Diets of sympatrically breeding Adélie, gentoo and chinstrap penguins from Admiralty Bay, South Shetland Islands, Antarctica, 1981 to 2000
during chick rearing over the 20-year period from 1981 to 2000. All three penguin species were largely ... the 20-year period from 1981 to 2000. All three penguin species were largely dependent on Antarctic krill ... , specifically the benthic Nototheniid species, while Adélie and chinstrap penguins largely ate two species ... among the three species in the years of high versus low food loads. Adélie and chinstrap penguin adults ...
Meeting Document : WG-EMM-03/29 : Author(s): W.Z. Trivelpiece (USA), K. Salwicka (Poland) and S.G. Trivelpiece (USA)
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KRILLBASE: a circumpolar database of Antarctic krill and salp numerical densities, 1926–2016
, together with environmental information, standardisation and metadata. The aim is to provide a temporal ... with salp abundance data. These data were collected by 10 nations and span 56 seasons in two epochs (1926 ... , KRILLBASE, together with environmental information, standardisation and metadata. The aim is to provide ... with salp abundance data. These data were collected by 10 nations and span 56 seasons in two epochs (1926 ...
Meeting Document : WG-EMM-17/P03 : Author(s): A. Atkinson, S.L. Hill, E.A. Pakhomov, V. Siegel, R. Anadon, S. Chiba, K.L. Daly, R. Downie, S. Fielding, P. Fretwell, L. Gerrish, G.W. Hosie, M.J. Jessopp, S. Kawaguchi, B.A. Krafft, V. Loeb, J. Nishikawa, H.J. Peat, C.S. Reiss, R.M. Ross, L.B. Quetin, K. Schmidt, D.K. Steinberg, R.C. Subramaniam, G.A. Tarling and P. Ward
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Selectivity and two biomass measures in an age-based assessment of Antarctic krill (Euphausia superba)
using two forms of selectivity (logistic or double-logistic) with time-constant or annually varying ... the South Shetland Islands from 1992 to 2011. Two indices of krill biomass based on (1) trawl-net samples ... different combinations of the two biomass surveys with the various options for modeling selectivities were ... to fit both sources of biomass data. The two-stage approach of first randomizing the phase order until ...
Meeting Document : WG-EMM-15/P07 : Author(s): D. Kinzey, G.M. Watters and C.S. Reiss
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Standardization of fishing effort for Champsocephalus gunnari in the South Georgia area (Subarea 48.3)
different classes (countries, types of vessel, fishing gear, months and years). Multiple regression is used ... . File: 20-Gasiukov.pdf ... of vessel, fishing gear, months and years). Multiple regression is used to solve the model and the resultant ... (1), if the respective indices are substituted. Having selected 'year of fishing' as a type of category, one may ... that for the first two years of this period, data on fishing effort were scanty. The whole of the commercial ... and years). Multiple regression is used to solve the model and the resultant yearly standardized CPUE ... Champsocephalus gunnari B lIo~patioHe 48.3 6bIJI nOJIYQeH nYTeM HCnOJIb30BaHH5.I MYJIbTHnJIHKaTHBHoti MO~eJIH ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 327–336 : Author(s): Gasiukov, P.S.
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Champsocephalus gunnari stock status in the South Georgia area
intensity was F 0.1. In the first two cases TAC=25-30 thousand tonnes and stock size does not change ... fishing intensity was F0.1. In the first two cases TAC=25-30 thousand tonnes and stock size does ... . The recruitment was taken at the lowest possible level for all these years (400 million specimens). Catch-per-unit ... . The recruitment was taken at the lowest possible level for all these years (400 million specimens). Catch-per-unit ... HCnOJIb30BaHHOH B nOCJIe,llHee BpeM51 BeJIH'-IHHe 3anaca H ,lla)l{e npH HaHHH3WHX YPOBH51X nOn ... . T H 6bICTPbIH POCT ,lI0 OKOJIO 220 TbIC. T B ce30H 1982/83 r. 3aTeM On5.lTb pe3Koe CHH)l{eHHe ,lI0 63 TbIC ... YCJIOBH5IX (HaHMeHhWa5I l.IHCJIeHHOCTh nOnOJIHeHH5I - 400 MJIH. 3K3.) H OllY=29,2 TbIC. T B ce30H 1988/89 ... 0,35 1,44 1,69 5,75 10,11 0,35 0,53 059 1,26 3,40 60.00 100.90 129.30. 67.20 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 1-18 : Author(s): Borodin, R. and P. Kochkin