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Some thoughts on precautionary measures for the krill fishery
spawning biomass dropping below 20% of its pre-exploitation median level over a 20-year harvesting period ... is 10%; and the median krill escapement1 in the spawning biomass over a 20-year period is 75% of ... 66 64 62 60 58 56 54 52 "W 59 Figure 1: CCAMLR Statistical Subareas 48.1,48.2 and 48.3. Shaded ... survey. Document WG-Krill-92/4. CCAMLR, Hobart Australia. Croxall, J.P. 1984. Seabirds. In: Laws, R.M ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 1–11 : Autor(es): Everson, I. and W.K. de la Mare
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Seabird by-catch by autoline vessels: do line setters increase the sink rate of integrated weight longlines?
surface were evaluated to five target depths: 2, 3, 5, 10 and 20 m. Of these target depths, sink time to ... Setting direction Pair ‘A’ 4 3 2 1 4 3 2 1 111 ... . corresponding to a standard devia- tion in time to a given depth of approximately 4 s). None of the pair-level ... . Treatment Target depths (m) 0–2 0–3 0–5 0–10 0–20 With 7.9 12.1 20.4 38.6 76.9 Without 7.4 12.9 20.7 ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 107–114 : Autor(es): Robertson, G., J. Williamson, M. McNeill, S.G. Candy and N. Smith
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Krill biomass assessment in Statistical Area 48 from the RV AtlantNIRO data - Autumn 1989/90
600 S; 32° to 18°W) and southern (60° to 67°S; 20° to 18°W), was affected by different types of ... 60 miles by latitude and longitude and during the second survey it was 30 miles by latitude and 40 ... ::. ' .. 60 61 62 6"3 65 66 ..,."."'" S 67 i ~O 50 100 500 tOOO 5000 ·f ... from , the South Sandwich Island study area in March/April 1990. 119 49 47 AS 43 W 60 S 62 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 115–121 : Autor(es): Fedotov, A.C.
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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 ... -May) we have a total of l 063 uplinks from 11 birds (7 males, 4 females), tracked for a total of 91 ... . (1992). That is, about 40% of locations are accurate to within l km. The remaining 60% are of ... Figure 4. This fishery operates mainly over the edge of the continental shelf at depths of around 1 000 ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 101–110 : Autor(es): Croxall, J.P. and P.A. Prince
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Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)
detailed surveys, which was made from 4 to 13 February 1975, as an example (see below - Survey 2). The ... quantitative indices for the E. superba population are given in Table 1. Figures 1 to 4 show survey areas and ... swarms were distributed in the upper layer from 12 to 35 m. These differences were taken into ... edge of streams flowing together from opposite directions. Survey 2 (4 to 13 February 1975, RV ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Autor(es): Latogursky, V.I., R.R. Makarov and L.G. Maklygin
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Review of biological parameters for Ross Sea skates
is 14 years. However this may be a considerable underestimate, and true longevity may exceed 20 years ...
Meeting Document : WG-FSA-06/31 : Autor(es): M.P. Francis (New Zealand)
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Seabird avoidance measures for small Alaskan longline vessels
16.8 m and with infrastructure (a 45-m streamer line with a minimum aerial distance of 20 m) was ...
Meeting Document : WG-FSA-05/36 : Autor(es): E.F. Melvin and M. Wainstein (USA)
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Demography and population trends of the Atlantic yellow-nosed albatross
two study colonies on Gough Island and Tristan da Cunha for 20 years. Annual variation in the number ...
Meeting Document : WG-FSA-03/37 : Autor(es): R. Cuthbert (United Kingdom), P.G. Ryan, J. Cooper (South Africa) and G. Hilton (United Kingdom)
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Preliminary assessment of mackerel icefish, Champsocephalus gunnari, on the Heard Island Plateau (Division 58.5.2) based on a survey in April–May 2003
approximately 20% of the 2002 estimate. This decline in abundance is consistent with the passage of the strong ...
Meeting Document : WG-FSA-03/32 : Autor(es): A.J. Constable, C.R. Davies, R. Williams and T. Lamb (Australia)
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Krill population dynamics in the Scotia Sea: variability in growth and mortality within a single population
determined 20 by regional differences in growth and mortality. The majority of the commercial harvest of ...
Meeting Document : WG-EMM-02/16 : Autor(es): K. Reid, E.J. Murphy (United Kingdom), V. Loeb and R.P. Hewitt (USA)