Search results
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Biological characteristics of Antarctic fish stocks in the southern Scotia Arc region
of the 1960s, principally by fleets from the ex-Soviet Union and other former Eastern Bloc countries ... ; Permitin and Tarverdiyeva, 1972; Kock, 1986; Agnew and Moreno, 1992; Moreno et al., 1996; Agnew et al ... Islands are located some 150 n miles to the east of Elephant Island. The shelf areas of both island ... South Georgia and Shag Rocks, has been extensively studied by trawl surveys since the mid- 1960s ... Paper Title: Biological characteristics of Antarctic fish stocks in the southern Scotia Arc ... region Abstract / Description: Commercial exploitation of finfish in the southern Scotia Arc took place ... state of fish stocks of the southern Scotia Arc region has been accorded little attention until 1998 ... , despite substantial catches in the first four years of the fishery and ample opportunity to sample these ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 1–41 : Author(s): Kock, K.-H., C.D. Jones and S. Wilhelms
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Estimating the impact of depredation by killer whales and sperm whales on longline fishing for toothfish (Dissostichus eleginoides) around South Georgia
. Both species demonstrate an east to west migration throughout the season that is not related ... with no obvious pattern between months. Both species demonstrate an east to west migration throughout the season ... an east to west migration throughout the season that is not related to the pattern of fishing effort ... mammals as direct competi- tors for a resource, with economic losses coming directly from loss of catches ... = 0.0003), although the pod size appears to be lower in the middle of the fishing sea- son (Figure ... obvious east–west movement with interac- tions concentrated to the northeast during May and spreading ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 163–178 : Author(s): Moir Clark, J. and D.J. Agnew
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Brief report of the joint Soviet-Australian expedition of the USSR FRV Professor Mesyatsev to the Australian fishing zone around the territory of Heard and McDonald Islands, May-August, 1987
E-W and N-S. The sea mountains (Banks) have the following names: 1. Youznays (Southern) 2. Shrednaya (Middle ... ) 3 .. zapadnaya (Western) 4. Shootchaya (Pike) 5. vostochnaya (Eastern) and further to the east 6. Novaya ... during the cruise. The fishing ground to the east of Heard Island is an extrusion ... east from Heard Island and over Bank Youznaya (southern), (Biomass of mesoplankton was less than 50 ... Paper Title: Brief report of the joint Soviet-Australian expedition of the USSR FRV Professor ... Mesyatsev to the Australian fishing zone around the territory of Heard and McDonald Islands, May-August ... , 1987 Abstract / Description: The results of the first joint Soviet-Australian expedition to the AFZ ... around Heard and McDonald Islands are briefly reported. Environmental conditions of the shelf area of ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 75-103 : Author(s): Gherasimchook, V.V., V.N. Brodin, A.V. Kljausov, I.B. Russelo, P.V. Tishkov and N.B. Zaremba
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Beyond MSY: a consideration of definitions of management objectives
correspondence to the behaviour of resources under exploitation. In the 1950s and 1960s it served a very useful ... , G is the growth put on by the fish that have already recruited M is the losses due to natural mortality ... from its normal use as a coefficient. In the normal usage the losses due to natural mortality can ... of the individuals exceeds losses due to natural mortality, and in the absence of fishing the total biomass ... Paper Title: Beyond MSY: a consideration of definitions of management objectives Abstract ... / Description: The concept of ‘Maximum Sustainable Yield’ (MSY) has provided a useful guideline for resource ... management under the assumptions of a simple population model and simple objectives. This paper explores ... different guidelines under more realistic population models, taking account of the objectives set out in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 299-322 : Author(s): Gulland, J.A.
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Age and growth of the Antarctic skate (Amblyraja georgiana) in the Ross Sea
of 6–7 years for males and 8–11 years for females. These estimates are near the middle to upper end ... of 6–7 years for males and 8–11 years for females. These estimates are near the middle to upper ... for the datasets including outliers. Reading 1 0 2 4 6 8 10 12 14 16 R ea di ng 2 (m ea n ± 2S ... 1 2 2 8 3 1 4 2 5 1 1 1 6 2 5 2 1 1 1 1 7 2 1 2 2 1 3 7 4 1 1 1 3 1 3 3 1 1 2 3 6 3 1 1 2 2 2 1 1 1 3 1 1 1 3 1 1 1 2 1 R ea di ng 2 (m ea n ± 2S E ) Figure 3: Within-reader comparison of thorn band counts ... – revisited. In: di Prisco, G., E. Pisano and A. Clarke (Eds). Fishes of Antarctica: a Biological Overview ... for males and 8–11 years for females. These estimates are near the middle to upper end of the range of ages ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 183–194 : Author(s): Francis, M.P. and C. Ó Maolagáin
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Effect of line sink rate on albatross mortality in the Patagonian toothfish longline fishery
di6metro respectivamente. Figura 2: Configuraci6n de 10s palangres del In Sling 66 (sistema espafiol ... -and-hook bearing 11.5 mm mother line with each end attached to 100 kg anchors, which were used to sink ... of the snoods on the mother line from the anchors. The anchors were attached to 18 mm ropes which rose from ... the mother line. Snood lines were 3 mm in diameter and 50 cm in length. Line Setting and Hauling ... Paper Title: Effect of line sink rate on albatross mortality in the Patagonian toothfish longline ... vessels to derive a sink rate and line-weighting regime that would minimise the capture of albatrosses ... based on knowledge of line sink rates and albatross diving abilities. Sink rates of lines deployed into ... propeller turbulence, which tended to keep lines aloft, varied as a function of distance between line ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 133–150 : Author(s): Robertson, G.G
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Distribution characteristics of krill aggregations in the fishing ground off Coronation Island in the 1989/90 season
fishing grounds during this period: north-east (500 1O'S to 59° 30'S and 43°30'W to 44°W) and south-west ... to 2 on the Richter scale while water temperature was between 0° and 0.5° (Figure 4a). In the north-east fishing ... ground shifted somewhat to the south-east (Figure 5). Targetted krill swarms were recorded as "tracks ... the temperature gradient of the thermocline which improves conditions for phytoplankton (Latogursky et al., 1972 ... Paper Title: Distribution characteristics of krill aggregations in the fishing ground off ... Coronation Island in the 1989/90 season Abstract / Description: Distributional characteristics of krill ... biological condition of krill and the performance of the fishery. Investigations were carried out from ... October 1989 to February 1990. An echo sounder was used to assess the characteristics of krill ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 49–73 : Author(s): Kasatkina, S.M. and V.I. Latogursky
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Diet of the Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica (Subarea 88.1)
a more southern dis- tribution, typically in higher latitudes south of 65ºS, is in Subarea 88.1 ... ., 2002), particularly from southwest Atlantic waters (Permitin and Tarverdiyeva, 1972; Tar- verdiyeva ... , 1972; Zhivov and Krivoruchko, 1990; McKenna, 1991; García de la Rosa et al., 1997; Pilling et al ... by longlining and by potting from east Shag Rocks (South Georgia) in 300 to 600 m depths, and found that only ... Paper Title: Diet of the Antarctic toothfish (Dissostichus mawsoni) from the Ross Sea, Antarctica ... (Subarea 88.1) Abstract / Description: The diet of Antarctic toothfish (Dissostichus mawsoni) captured by ... stomachs examined respectively). Fish sampled in 2001 were caught at depths of 317 to 2 154 m and ranged ... from 58 to 190 cm in total length (TL). Fish sampled in 2002 were caught at depths of 815 to 1 623 m ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 113–123 : Author(s): Fenaughty, J.M., D.W. Stevens and S.M. Hanchet
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Food consumption by predators in a CCAMLR integrated study region
i. The number of active breeders is calculated from the rate of egg loss between the laying date (day ... 1) and the hatching data (day h) and the rate of chick loss between hatching and fledging date (day f). Both egg loss ... and chick loss are assumed to be exponential at rates kl and kz respectively. Thus the populations on day ... travelling (e.g., feeding or resting). If the travel speed is v m S-l and proportion of the trip spent ... / Description: A detailed description of the structure and mode of operation of a model for estimating food ... consumption of seabird predators is provided. This model is a development of earlier ones used in the South ... provided, illustrating the changes produced by using these new sub-models. Results of initial sensitivity ... analyses indicate particular sensitivity to estimation of metabolic energy requirements. The system is ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 489–519 : Author(s): Croxall, J.P., C. Ricketts and A.G. Wood
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Seabird mortality in the Patagonian toothfish longline fishery around Crozet and Kerguelen Islands, 2001–2003
others were intrinsically linked to vessels throughout the entire trip (the vessel cannot change fi ... shing methods mid-trip). As a result, ‘vessel’ was considered as a random factor in the mixed models ... , centre-east and southeast). Set number Order in which longlines are set (e.g. no. 1 is set first ... petrel, which seems particularly vulnerable due to its nocturnal behaviour and long foraging trips ... eleginoides) longline fishery operating in the French Exclusive Economic Zones (EEZs) of Crozet and Kerguelen ... caught over this period. A multivariate analysis suggests that a combination of factors (environmental ... and relating to fishing techniques) have an effect on the observed numbers of seabirds caught ... incidentally. The results of this study suggest that a significant part of the mortality of white-chinned ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 53–80 : Author(s): Delord, K., N. Gasco, H. Weimerskirch, C. Barbraud and T. Micol