Search results
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Length-based assessments revisited – why stock status and fishing mortality of long-lived species such as toothfish cannot be inferred from length-frequency data alone
about using unstandardised catch rate data have led to a desire to draw inferences about stock status ... assessment methods are revisited and some limitations in their ability to draw robust inferences about stock ... about using unstandardised catch rate data have led to a desire to draw inferences about stock status ... assessment methods are revisited and some limitations in their ability to draw robust inferences about stock ... the precautionary catch limits. For new and exploratory fisheries of Patagonian toothfish (Dissostichus ... , 2010, paragraph 5.7). However, robust advice on catch limits according to CCAMLR decision rules has ... of intention to fish, measures requiring data collection, and decision rules for setting pre- cautionary catch ... limits. The intent of the data col- lection is to provide sufficient data from research and fishery ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 57–73 : Author(s): Ziegler, P.E., D.C. Welsford and A.J. Constable
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Quantifying movement behaviour of vessels in the Antarctic krill fishery
of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed a distinct ... pattern. Mean between-haul distances were generally longer when catch levels fell below 10 tonnes/haul ... , and the travel distance decreased as the catch level increased; this pattern was most obvious for operations ... of the krill fishery. Analysis of distance between hauls in relation to their catch level revealed a distinct ... managed by CCAMLR since the 1980s (Everson, 2000). Although precau- tionary catch limits for the krill ... that the utility of catch-per-unit-effort (CPUE) data is limited because such data does not take into account ... of distance between hauls in relation to their catch level revealed a distinct pattern. Mean between-haul ... distances were generally longer when catch levels fell below 10 tonnes/haul, and the travel distance ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 131–148 : Author(s): Kawaguchi, S. and S.G. Candy
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A risk-management framework for avoiding significant adverse impacts of bottom fishing gear on Vulnerable Marine Ecosystems
, closed areas around identified VMEs, open and closed management areas, by-catch limits for VME-forming ... areas, by-catch limits for VME-forming organisms, gear modification or spatial distribution of fishing ... and closed management areas, by-catch limits for VME-forming organisms, gear modification or spatial ... 4.135 and 4.136; SC-CAMLR, 2003b, paragraph 5.230): (i) avoidance (ii) mitigation (iii) catch limits ... VMEs, open and closed management areas, by-catch limits for VME-forming organisms, gear modification ... ), temporal management (closed seasons), gear management and catch controls (by-catch limits, control of IUU ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 177–193 : Author(s): Martin-Smith, K
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Commercial krill fisheries in the Antarctic, 1973 to 1988
) are used to discern observable trends in catch and effort for the Antarctic krill (Euphausia superba ... ) fishery between 1972/73 and 1987/88. The annual krill catch rose gradually to a peak of some 500 000 ... thereafter. In terms of both catch and effort the Soviet and Japanese krill fisheries in Subareas 48.1, 48.2 ... (Balaenoptera acutorostrata) catches are discussed. File: 15-Miller.pdf ... for the Conservation of Antarctic Marine Living Resources (CCAMLR) are used to discern observable trends in catch ... krill catch rose gradually to a peak of some 500 000 tonnes in 1981/82 before dropping to a low level ... in 1983/84 and stabilizing at about 400 000 tonnes thereafter. In terms of both catch and effort ... with respect to independent estimates of krill abundance and minke whale (Balaenoptera acutorostrata) catches ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 229–281 : Author(s): Miller, D.G.M.
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The use of patent databases to predict trends in the krill fishery
are currently informed by data on annual catches and by CCAMLR’s annual notification procedure. There has been ... that developments that affect future catches can be predicted. This paper uses publicly available patent databases ... shows similar trends to the catch and notification information, and the three sources of information can ... are currently informed by data on annual catches and by CCAMLR’s annual notification procedure. There has ... (210 000 tonnes) is only a fraction of the estimated precautionary catch limit (8.6 million tonnes ... by numerous factors, including, but not limited to, increased and diversified participation in the fishery ... and ecosystem-based approach to management. The krill fishery is unique because the current level of catch ... the appropriate management measures. Currently, however, there is very limited informa- tion available ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 135–144 : Author(s): Foster, J., S. Nicol and S. Kawaguchi
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On the presence of Paralomis spinosissima and Paralomis formosa in catches taken during the Spanish survey Antártida 8611
Paper Title: On the presence of Paralomis spinosissima and Paralomis formosa in catches taken ... m and that of P. formosa, far less frequent in the catches, from 320 to 350 m. Field observations showed that these two ... in the catches, suggest that P. spinosissima and P. formosa tend to concentrate in areas close to the shelf break ... On the presence of Paralomis spinosissima and Paralomis formosa in catches taken during the Spanish ... OF PARALOMIS SPINOSISSIMA AND PARALOMIS FORMOSA IN CATCHES TAKEN DURING THE SPANISH SURVEY ... 160 to 627 m and that of P. formosa, far less frequent in the catches, from 320 to 350 m. Field ... usually accompanying them in the catches, suggest that P. spinosissima and P. formosa tend to concentrate ... on by-catch species, among which Paralomis spp. were included due to their rare occurrence in the catches ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 165–173 : Author(s): López Abellán, L.J. and E. Balguerías
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Scientific observations in CCAMLR fisheries – past, present and future
to the standard catch and effort data supplied by vessels, the collection of data by scientifically qualified ... mammals. The scheme is limited to scientific observation only and is separate from enforcement issues ... to the standard catch and effort data supplied by vessels, the collection of data by scientifically qualified ... mammals. The scheme is limited to scientific observation only and is separate from enforcement issues ... complicate matters. Therefore, in addition to the standard catch and effort data supplied by vessels ... and related species, including seabirds and marine mammals. The scheme is limited to scientifi c observation ... marins. Ce système se limite à l’observation scientifi que et ne concerne aucunement les questions ... .); (ii) take samples of catches to determine biological characteristics; (iii) record biological data ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 81–98 : Author(s): Sabourenkov, E.N. and E. Appleyard
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Identifying taxonomic groups vulnerable to bottom longline fishing gear in the Ross Sea region
in the fishery being assessed. New Zealand identified an interim list of taxa to monitor in fishery by-catch ... , taxonomic resolution and presence in fishery by-catch are also important. Thirteen coarse-resolution ... Zealand identified an interim list of taxa to monitor in fishery by-catch in the Ross Sea as part of its ... and presence in fishery by-catch are also important. Thirteen coarse-resolution taxonomic groups are identified ... identified an interim list of taxa to monitor in fishery by-catch in the Ross Sea as part of its benthic ... in fishery by-catch are also important. Thirteen coarse-resolution taxonomic groups are identified ... of fishing operations. CM 22-07 (CCAMLR, 2009) builds on this by requiring vessels to monitor by- catch ... be considered vulnerable based on ecol- ogy alone. Consequently, the criteria of presence in fishery by-catch ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 105–127 : Author(s): Parker, S.J. and D.A. Bowden
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Supplementary data on exploited stocks in Division 58.5.1 (Kerguelen)
of Notothenia rossii, a species which is at present only fishable as a by-catch. The total biomass of the stock ... legal catch size. The value of the selected abundance index (catch per unit effort expressed in tonnes ... recently, accompanied by an increase in the abundance index, following a reduction in catch and fishing ... effort. This trend could well be reversed by too high a catch in 1988/89. Finally, it is not possible ... corresponding to the arrival (at the age of 5 to 6 years) of these juveniles on the shelf. A catch limited ... fishable as a by-catch. The total biomass of the stock, however, remains very low according ... good results in 1988/89, once the cohort had reached legal catch size. The value of the selected ... abundance index (catch per unit effort expressed in tonnes per fishing hour) is, however, lower than those ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 147–161 : Author(s): Duhamel, G.
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The foraging range of Adélie penguins – implications for CEMP and interactions with the krill fishery
catch data for the regions of interest. The potential for overlap with krill fishing occurs particularly ... of penguins on foraging trips were compared with historical records of fine-scale krill catch data ... compared with historical records of fine-scale krill catch data for the regions of interest. The potential ... breeding seasons, and compares these foraging locations with fine-scale catch data on Antarctic krill ... to present individual foraging trips. The data on krill catches presented in Figures 2b and 3a-c were ... 2 and 3 and are related to or superimposed on a background of historic krill catch data. Bathymetric data are also ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 75–87 : Author(s): Kerry, K.R., J.R. Clarke, S. Eberhard, H. Gardner, R.M. Lawless, S. Corsolini, S. Focardi, E. Franchi, D. Rodary and R. Thomson