Search results
-
Length-based assessment for mackerel icefish (Champsocephalus gunnari) at South Georgia
the given harvest control rule to set a two-year total allowable catch (TAC). One issue is the accurate ... to set a two-year total allowable catch (TAC). One issue is the accurate identification of age cohorts ... A population projection model is required to calculate catch limits using the HCR. The current method used ... these numbers forward under the given harvest control rule to set a two-year total allowable catch (TAC). One ... de la nouvelle méthodologie, Hillary et al. 130 introduction In order to determine the catch ... in order to assess what the sustainable catch over that time would be. Population models that project ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 129–137 : Author(s): Hillary, R.M., C.T.T. Edwards, R.E. Mitchell and D.J. Agnew
-
Estimating optimal observer coverage in the Antarctic krill fishery
by-catch. A partial coverage sampling program has been implemented in South Georgia since 2002: observers ... and between-haul variance was estimated. For krill mean length and larval fish by-catch rate, between-vessel ... by-catch. A partial coverage sampling program has been implemented in South Georgia since 2002: observers ... and between-haul variance was estimated. For krill mean length and larval fish by-catch rate, between-vessel ... of larval fish by-catch. A partial coverage sampling program has been implemented in South Georgia since ... . Between-vessel and between-haul variance was estimated. For krill mean length and larval fish by-catch ... the impact of the fishery on the krill population, and assess levels of by-catch. While the CCAMLR Scheme ... , the by-catch in the fishery, particularly of larval fish, and the interac- tions with, and incidental ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Author(s): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards
-
Location and intensity of the Soviet krill fishery in the Elephant Island area (South Shetland Islands), 1988/89
from 21 November 1988 to 25 March 1989. Although the total catch of the USSR in this season reached ... . The highest catch-per-unit-effort was observed in January 1989 (7.7 tonnes per hour of trawling on average ... . Although the total catch of the USSR in this season reached a maximum, for the last nine seasons the total ... vessel operated in the area over 40% of the time. The highest catch-per-unit-effort was observed ... 1989. Although the total catch of the USSR in this season reached a maximum, for the last nine ... standard fishing vessel operated in the area over 40% of the time. The highest catch-per-unit- effort ... Group on Krill (WG-Krill) is to analyse the operation of the krill fishery, including catch size ... ; • coordinates at start of haul; • vessel course and towing speed; • haul depth; and • catch per haul ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 305–335 : Author(s): Sushin, V.A. and A.S. Myskov
-
Characteristics of seasonal variation in diurnal vertical migration and aggregation of Antarctic krill (Euphausia superba) in the Scotia Sea, using Japanese fishery data
to shallower depths again in early spring. The average catch-per-unit-effort (CPUE) was highest during the day ... , shifting to shallower depths again in early spring. The average catch-per-unit-effort (CPUE) was highest ... in early spring. The average catch- per-unit-effort (CPUE) was highest during the day and lowest at night ... The krill catch datasets (total of 93 181 tows) recorded in logbooks of a total of 14 Japanese krill ... duration varied between months and areas and averaged 49 minutes (±26 min; SD). Catch-per-unit-effort ... (CPUE) was defi ned in this study as catch per volume of trawled water (g/m3). The volume of trawled ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 163–172 : Author(s): Taki, K., T. Hayashi and M. Naganobu
-
Factors affecting the incidental mortality of seabirds in the Dissostichus eleginoides fishery in the southwest Atlantic (Subarea 48.3, 1995 season)
of streamer lines and hook size were important sources of variation, both in vessels' analyses of catch ... important sources of variation, both in vessels' analyses of catch of birds per unit effort (BPUE ... important sources of variation, both in vessels' analyses of catch of birds per unit effort (BPUE), as well ... rate (i.e. catch of birds per unit effort (BPUE)) of 0.37 b i rd s / l 000 hooks. Argentinian ... of the barb. It is more difficult to compare the fine-scale data because of the limited opportunities ... those included in Figure 3. Nevertheless, one comparison could be made. The catch rate of a vessel ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 79–91 : Author(s): Moreno, C.A., P.S. Rubilar, E. Marschoff and L. Benzaquen
-
Directed research. Antarctic Marine Living Resources (AMLR). A program development plan
they are a part. Studies in support of AMLR objectives include: (1) assessments of catch, effort, and related ... as by-catch during commercial fishing operations; (2) biological surveys to validate the reliability of catch ... they are a part. Studies in support of AMLR objectives include: (1) assessments of catch, effort, and related ... as by-catch during commercial fishing operations; (2) biological surveys to validate the reliability of catch ... they are a part. Studies in support of AMLR objectives include: (1) assessments of catch, effort, and related ... as by-catch during commercial fishing operations; (2) biological surveys to validate the reliability ... of catch, effort, and related biological data provided by countries engaged in commercial operations ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 363-373 : Author(s): Office of Science and Technology, NMFS, NOAA, US Department of Commerce (USA)
-
Sea-surface temperature and krill catches around South Georgia in December–February 1989–1991 and 1999–2001
Paper Title: Sea-surface temperature and krill catches around South Georgia in December–February ... be appraised by comparing them with krill catches obtained under various hydrological conditions. In comparison ... . The total catch of krill was 81 369 tonnes in 1989/90 and 123 562 tonnes in 1990/91. However, it dropped ... Sea-surface temperature and krill catches around South Georgia in December–February 1989–1991 ... . 9 (2002): 165–172 165 SEA-SURFACE TEMPERATURE AND KRILL CATCHES AROUND SOUTH GEORGIA IN DECEMBER ... be appraised by comparing them with krill catches obtained under various hydrological conditions ... activities in the area. The total catch of krill was 81 369 tonnes in 1989/90 and 123 562 tonnes in 1990/91 ... ), satellite monitoring, SST anomaly sign, krill catch, Subarea 48.3, CCAMLR 167 Sea-surface temperature ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 165–174 : Author(s): Vanyushin, G.P
-
Marine mammals and demersal longline fishery interactions in Crozet and Kerguelen Exclusive Economic Zones: an assessment of depredation levels
by comparing catch-per-unit-effort (CPUE) (fish/weight/hook) of each longline set in the absence/presence ... was assessed by comparing catch-per-unit-effort (CPUE) (fish/weight/hook) of each longline set in the absence ... fi shing areas. The effect of depredation was assessed by comparing catch-per-unit-effort (CPUE) (fi ... , a major decrease in the standardised catch-per-unit-effort (CPUE) from 2000 to 2003 was reported ... ) to record the by-catch level (e.g. number of non-target species landed); and (iii) to record interactions ... and 172 tonnes respec- tively of Patagonian toothfi sh which, combined, comprised 3.2% of the total catch ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 67–82 : Author(s): Roche, C., C. Guinet, N. Gasco and G. Duhamel
-
Chilean krill fishery: analysis of the 1991 season
: This paper summarises Chilean catch data for 1991. Special emphasis is given to the analysis of haul-by-haul ... data and its use in studying small-scale spatial distribution of catches. The results show that krill ... This paper summarises Chilean catch data for 1991. Special emphasis is given to the analysis ... of haul-by-haul data and its use in studying small-scale spatial distribution of catches. The results show ... This paper summarises Chilean catch data for 1991. Special emphasis is given to the analysis of haul-by-haul ... data and its use in studying small-scale spatial distribution of catches. The results show that laill ... and composition of commercial kriU catches, including likely future trends in these catches (SC-CAMLR 1988 ... , comprising from 5% to 100% of the kriU fishery in that subarea (Figure 1). The catch is used ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 273–287 : Author(s): Marín, V.H., A. Mujica and P. Eberhard
-
Krill population biology during the 1991 Chilean Antarctic krill fishery
0.01 g. Mean catch-per-hour and mean catch-per-towing time were determined from a total of 419 hauls ... -time catches while females are more abundant during daytime catches, thus showing a different trend ... . Considering all catches, the yield in terms of tonnes-per-mile and tonnes-per-hour was higher during ... the daytime than during twilight and night in both fishing areas. These daytime catches were also made ... ) to the nearest 0.01 g. Mean catch-per-hour and mean catch-per-towing time were determined from a total of 419 ... , males are more abundant in night-time catches while females are more abundant during daytime catches ... , thus showing a different trend. Considering all catches, the yield in terms of tonnes-per-mile ... . These daytime catches were also made at consistently greater depths. Research was fmanced by INACH (Chilean ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 223–235 : Author(s): Mujica R., A., E. Acuña S. and A. Rivera O.