Search results
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Killer whale (Orcinus orca) and sperm whale (Physeter macrocephalus) interactions with longline vessels in the Patagonian toothfish fishery at South Georgia, South Atlantic
whale pods were generally small (2–8 animals), while solitary animals and larger pods (>15 animals ... , although smaller groups (2–3 animals) were also relatively common. Interactions with killer whales were ... . Killer whale pods were generally small (2–8 animals), while solitary animals and larger pods (> ... ;15 animals) occurred less frequently. Sperm whales were most often solitary when interacting ... 78 24.5 20 6.3 J 712 30 4.2 119 16.7 14 2 K 346 12 3.5 18 5.2 7 2 L 238 8 3.4 167 70.2 2 0.8 ... %) or three (18%) animals together were also relatively common, but seven or more animals were only observed ... 6–10 7 0.8 11–15 21 11.3 >10 1 0.1 16–20 12 6.5 21–30 2 1.1 Table 4: The times at which ... the hauling site. Observers reported that when vessels steamed away for between 20 and 30 n miles, killer ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 111–126 : Author(s): Purves, M.G., D.J. Agnew, E. Balguerías, C.A. Moreno and B. Watkins
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Analysis of results from demersal fish surveys at South Georgia, undertaken by the United Kingdom and the USSR, January and February 1990
40 30 20 10 0 f 0 1 2 3 4 5 6 7 Catch (tonnes) of C. gunnarl One haul not included ... : 40 tonnes urvey 8 9 70 AkademiJc Knipovich Survey 60 - 50 - 10 - 30 - 20 - 10 ... B 53.68 37.58 B 53.70 37.08 * B 53.65 37.23 ** C 53.89 37.27 53 30 36 0 B 53.90 36.20 B 53.90 36.27 ... . B ,ztaHHOM ,ztoKYMeHTe onucblBaeTC5I, KaKUM 06pa30M ~aHHbIe no KpynHbIM YJIOBaM ytluTblBaJIUCb npu aHaJIU3e ... discussions and analyses of the data from a survey from MV Hill Cove in January 1990 and RV Akademik Knipovich ... in February 1990 around South Georgia. Both surveys were characterized by large numbers of small ... increase in the estimated standing stock of Champsocephalus gunnari. The paper describes the ways in which ... these large hauls were considered in the analysis. No ideal method was found for incorporating the large ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 223–254 : Author(s): (Report of a Joint UK/USSR Workshop, 23 to 27 July 1990)
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Distribution and size–age composition of Antarctic krill (Euphausia superba) in the South Orkney Islands region (CCAMLR Subarea 48.2).
25–30 mm) and 2-year-old krill (age 2+; modal length 40–45 mm); the 3-, 4- and 5-year-old krill age ... 0 –10 –20 –30 29–30 31–32 33–34 35–36 37–38 39–40 41–42 43–44 45–46 47–48 49–50 51–52 53 ... % 70 % 60 % 50 % 40 % 30 % 20 % 10 % 0% 10 0% 90 % 80 % 70 % 60 % 50 % 40 % 30 % 20 % 10 ... % 0% 10 0% 90 % 80 % 70 % 60 % 50 % 40 % 30 % 20 % 10 % 0% 10 0% 90 % 80 % 70 % 60 % 50 % 40 ... Paper Title: Distribution and size–age composition of Antarctic krill (Euphausia superba) in the ... trawler FV Maxim Starostin in Subarea 48.2 between January and March in 2009 and 2010 are described. The ... distribution of size–age groups in association with particular water masses indicated that age 2+ krill ... dominated in cold Weddell Sea waters in the southern parts of the fishing area, while older age classes (3 ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 123–134 : Author(s): Sologub, D.O. and A.V. Remeslo
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Changes in the fish biomass around Elephant Island (Subarea 48.1) from 1976 to 1996
from 1978/79 to 1988/89, with most of the commercial harvesting taking place in the first two years ... /89, with most of the commercial harvesting taking place in the first two years of the fishery ... ; fish from this year class were 20 to 25 cm long in January/February 1976 and 30 to 37 cm in January ... -year-old fish (15-20 cm long) made up a considerable proportion of the fish caught during the survey ... (cm) Length (cm) Length (cm) 5 10 15 20 25 30 35 40 45 50 55 Length (cm) Length (cm ... (cm) 10 20 30 40 50 60 70 Length (cm) 1976: no data 10 20 30 40 50 60 70 Length (cm) 10 20 ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 165–189 : Author(s): Kock, K.-H
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Krill (Euphausia superba Dana) resources and distribution in the Wilkes Land area in the seasons 1986 to 1989
to 30 June. Split-year is denoted by the calendar year in which the split-year ends, i.e., 1989 ... , BbInOJIHeHHbIX B 1986-1989 rr. UPI-I CbeMKax OCHOBHoe BHI-IMaHl-le 6bIJIO COCpe.z:.OTOlleHO Ha nOI-lCKaX npl ... the years of observation was from 1.4 to 2.3xl()6 tonnes to the east of the Balleny Is (to 600W) and from ... of the survey area was eventually reduced slightly. As it turned out, during each year of observation ... Paper Title: Krill (Euphausia superba Dana) resources and distribution in the Wilkes Land area in ... surveys carried out along the Wilkes Land coast from 1986 to 1989 are presented in the paper. The surveys ... involved in the survey with one vessel conducting commercial krill fishing. The whole survey area from the ... account an area to the north of the edge of the continental slope. Each subarea was described in terms of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 149–162 : Author(s): Dolzhenkov, V.N. and V.P.Timonin
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Fish stock assessment survey in Subarea 48.3
the previous year and is not an artefact of the sampling technique or survey design. 30 Further evidence ... deg min deg min m min 1 22 1 6 13 53 19.80 42 44.30 463 27 2 22 1 10 10 53 28.40 42 18.20 232 30 ... 3 22 1 14 20 53 26.00 41 48.00 146 29 4 22 1 18 50 53 37.00 42 7.00 168 30 5 23 1 4 23 53 33.50 41 ... 1 4 25 53 38.00 38 6.00 188 30 18 26 1 11 58 53 48.20 38 23.80 183 30 19 26 1 14 32 53 38.00 37 51.00 ... Paper Title: Fish stock assessment survey in Subarea 48.3 Abstract / Description: A demersal ... fish survey in the vicinity of South Georgia, CCAMLR Subarea 48.3, is described. Details are given of ... important commercial species in the area, Champsocephalus gunnari, is shown to have undergone a major ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 25–67 : Author(s): Everson, I., G. Parkes, K.-H. Kock, S. Campbell, Z. Cielniaszek and J. Szlakowski
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Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken in the South Georgia area in 1990
by Akademik Knipovich had three peaks corresponding to size groups of 16-18, 24-26 and 30-34 cm. Only vertebra ... peaks in size composition correspond with fish of the 1987 and 1985/86 year classes. The first small ... peak corresponds with the strong 1988 year class. File: 17-Kochkin.pdf ... three peaks corresponding to size groups of 16-18, 24-26 and 30-34 cm. Only vertebra samples (n=140 ... . HXTHOJIOrHH, T. 20, BbIn. 6 (125): 941-944. K01.JKHH, n.H. 1985. AHaJIH3 perHcTpHpyIO~Hx CTpyKTyp ... three peaks corresponding to size groups of 16-18, 24-26 and 30-34 cm. Only vertebra samples (n=140 ... composition correspond with fish of the 1987 and 1985/86 year classes. The first small peak corresponds ... with the strong 1988 year class. Re.sume En janvier/fevrier 1990, la Grande-Bretagne et l'URSS ont mene deux ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 285–293 : Author(s): Kochkin, P.N.
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Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass
for 20 years and 30 years were undertaken for all combinations of y and fishing season. The results ... -year projection perio . Table 2: Escapement of spawning biomass at the end of 20 and 30-year ... ). The median ratio of spawning biomass after 20 and 30 years relative to median So in each run with no fishing ... spawning biomass. The projection period was 20 years. A subset of runs was undertaken to examine ... Paper Title: Bias in the estimation of krill yield from using a deterministic formulation of the ... unexploited spawning biomass. These models are used in order to account for uncertainty in the biological ... model as a basis for setting catch limits in the krill fishery, while the GYM is used for assessing ... yield in other finfish fisheries but can also be used for krill. The decision rules relate to the ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 1–8 : Author(s): Constable, A.J. and W.K. de la Mare
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Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a krill abundance index
o f t ot al Residuals P er ce nt o f t ot al 0 5 10 15 20 25 30 -150 -100 -50 0 50 100 150 ... Log10CPT 0 10 20 30 40 -1.5 -1.0 -0.5 0.0 0.5 1.0 -4 -2 0 2 4 -1.5 -1.0 -0.5 0.0 0.5 1.0 ... P er ce nt o f t ot al Quantiles of standard normal Residuals Log10CPD 0 10 20 30 40 ... 5000 6000 7000 5000 10000 15000 20000 25000 0 D J F M A M J J A S O N 0 10 20 30 40 50 ... Paper Title: Analysis of trends in Japanese krill fishery CPUE data, and its possible use as a ... definitions of effort and catch-per-unit-effort (CPUE), variables were modelled using linear mixed models in ... . The results strongly suggest that the krill fishery in the South Georgia area is operating at a ... critical level of krill availability which is just enough to maintain the best factory performance. In this ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 1–28 : Author(s): Kawaguchi, S., S. Candy, S. Nicol, K. Taki and M. Naganobu
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Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997
, in peak years yielding a total catch of over 100 000 tonnes (Kock, 1992). They feed predominantly ... they may account for 20% of the total mass (Kock, 1992; Everson et al., 1996). Arising from this, we ... to consider only those fish greater than or equal in total length to 30 cm. This group is composed ... 30 cm or greater in total length: males: total mass = 0.001322.L,"J5 (N = 5 453; r2 = 0.896 ... Paper Title: Variations in condition indices of mackerel icefish at South Georgia from 1972 to ... responds rapidly to changes in krill density and therefore can provide indications of short-term variations ... in krill availability. Condition index provides a useful proxy for krill density and is likely to be ... of considerable value in interpreting the results from ecosystein assessments such as that in ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Author(s): Everson, I. and K.-H. Kock