Search results
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Bias in the estimation of krill yield from using a deterministic formulation of the median unexploited spawning biomass
of the median unexploited spawning biomass Abstract / Description: Two Monte Carlo simulation models, the krill ... Two Monte Carlo simulation models, the krill yield model and the generalised yield model (GYM ... 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 ... sur 30 ans. Tableau 2: ~vi tement de la biomasse reproductrice ii la fin des projections sur 20 et ...
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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Directed research. Antarctic Marine Living Resources (AMLR). A program development plan
already contributed to the overexploitation of Antarctic fish stocks. In the 50 years between 1930 ... through close coordination in planning and cooperative work between the two programs, where appropriate ... research vessel capable of operating in Antarctic waters for a period of 180 days each year. Note: The full ... , 1986. File: 20-USA.pdf ... - KOTOPbIe npoBOAHT KOMMeptIeCKUe onepaquu B 30He AeHCTBUH KOHBeHquu, U AnH onpeAeneHUH 3~eKTUBHOCTU Mep ... to the overexploitation of Antarctic fish stocks. In the 50 years between 1930 and 1980 the populations of blue, fin ... coordination in planning ~nd cooperative work between the two programs, where appropriate. The principal ... of a dedicated research vessel capable of operating in Antarctic waters for a period of 180 days each year ...
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)
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An impact assessment framework for bottom fishing methods in the CAMLR Convention Area
) in the history of the Ross Sea fishery. The assessment was carried out in two parts: first in a two-day ... of a the local benthic community over years, and ‘negligible’ at the scale of the entire ecosystem over decades ... the two approaches so long as spatial and temporal scales are defined carefully. However, implicit ... in the CCAMLR context are defined in Article II, as the risk that human activities will: (i) cause harvested ... Paper Title: An impact assessment framework for bottom fishing methods in the CAMLR Convention ... cumulative impact on fragile benthic organisms from bottom fishing activity. The approach has been designed ... preliminary assessment of bottom fishing impacts for the 2008/09 toothfish longline fishery. This paper ... illustrates the utility of the standardised approach and provides a methodological template for systematic ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 195–210 : Author(s): Sharp, B.R., S.J. Parker and N. Smith
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Scientific observations in CCAMLR fisheries – past, present and future
CCAMLR, 2004b). 0 10 20 30 40 50 60 1996 1997 1998 1999 2000 2001 2002 2003 2004 CCAMLR season ... years. CCAMLR soon appreciated that it would be desirable, wherever possible, to have two scientifi ... sheries now require at least two scientifi c observers, one of whom must be appointed in accordance ... principles outlined in Article II of the CAMLR Convention (CCAMLR, 2004a, Part 1) embody an ‘ecosystem ... observers on board fishing vessels has assumed prominence in the collection of essential data for fisheries ... / Description: CCAMLR has the primary competency for managing fishing south of the Antarctic Polar Front ... strategy has often had to deal with incomplete and uncertain information on affected resources. Fishery ... designed to gather and validate fishery-related information essential for assessing the status of target ...
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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The Patagonian toothfish (Dissostichus eleginoides) fishery in the Kerguelen Islands (Indian Ocean sector of the Southern Ocean)
eleginoides) have been fished in the Kerguelen Islands zone for 20 years, firstly with trawlers and more ... for 20 years, firstly with trawlers and more recently with longliners. This is the oldest fishery ... between the two years is impossible, since the samples are not orthogonal (the number of animals caught ... in the Kerguelen Islands zone for 20 years, firstly with trawlers and more recently with longliners ... la zone des îles Kerguelen depuis 20 ans, d’abord avec des chalutiers puis des palangriers. C’est la ... ‘Kerpêche’ for trawlers (split- years – 1 July to 30 June – 1979/80 to 2000/01) and in Excel tables ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 1–25 : Author(s): Lord, C., G. Duhamel and P. Pruvost
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Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined with various codends
are similar, consisting of two sections: the initial one characterizes the selectivity for fish ... size was 123.6 mm, after the first two and after 30 hours of the codend exploitation its mesh size ... +---------r-----------~------------+_-------- 15 20 25' 30 45 50 55 fish length (TL,cm) Figure 7 Double-layer codend (mesh 120 mm) selectivity ... ~--------+--------- ---!--------- 15 20 25 30 35 40 45 0 j:;"sh Length ITL, qm/ Figure 8 Double-layer codend (mesh 120 mm ... of both tape codends were much better. It was found that an optimum mesh size of this codend for ... material used for their construction, incorrectly chosen mesh size, and certain morphological features of ... some Antarctic fish, which make it difficult for them to escape from the codend. Selectivity properties ... selection of Antarctic icefish and bumphead notothenia ranges from 60 to 100 mm. For other Antarctic fish ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 1-48 : Author(s): Zaucha, J.
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Defining smaller-scale management units to further develop the ecosystem approach in managing large-scale pelagic krill fisheries in Antarctica
involves two different types of unit: the ‘harvesting unit’, which is at the scale of the metapopulation ... . The integration of these components involves two different types of unit: the ‘harvesting unit’, which ... separate small-scale areas if the vector of transport is relatively predictable from one year to another ... of the harvested species. The inte- gration of these components involves two different types of unit ... . The basic principles for defi ning a unit are most easily explored in terms of the structure of animal ... populations. A group of animals that are continuously distributed throughout a favourable habitat is called ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 117–131 : Author(s): Constable, A.J. and S. Nicol
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Observations on haul-out patterns and trends in the breeding populations of southern elephant seal at Península Valdés (Patagonia) and Stranger Point (25 de Mayo - King George I.)
de Mayo-King George I. were studied during the breeding season from 1979 to 1987. Two main objectives ... ;s (Patagonia) and 25 de Mayo-King George I. were studied during the breeding season from 1979 to 1987. Two main ... 6 400 individuals. The value of r between these two years is 0.05, similar to the one estimated ... present information on the last seven years in two breeding places belonging to the Georgia stock. Two ... of females from these two breeding places. - 456 - The second one was included because after ... a patagonian one. METHODS Censuses were carried out in two different places. One of them was located ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 453-463 : Author(s): Vergani, D.F., M.N. Lewis and Z.B. Stanganelli
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The effects of monitoring procedures on Adélie penguins
. There was a slight reduction in return rates of birds banded for more than one season, but no evidence of band or tag ... . No reduction in fledging rates of chicks from nests of stomach-lavaged birds was detected over two breeding ... of band and tag loss. There was a slight reduction in return rates of birds banded for more than one ... was detected over two breeding seasons. The implications of these findings for the CCAMLR Ecosystem Monitoring ... banded two and three years previously, and also the failure of one implanted tag. The disappearance ... -recaptured birds banded for two years compared with the range of 72 to 75% for those tagged or banded ... that of birds with bands older than one year. However, the differences in return rates between our four groups ... and/or increased mortality occur after more than one year of band wear remains to be determined from future years ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 155–164 : Author(s): Clarke, J. and K. Kerry
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Editorial
of the CCAMLR Scientific Committee. Over those 30 years, several thousand scientific papers have been presented ... striking changes over the past 30 years is the increase in the number of scientific journals in which work ... Committee. Over those 30 years, several thousand scientific papers have been presented to CCAMLR meetings ... the past 30 years is the increase in the number of scientific journals in which work of relevance to CCAMLR ... -making by CCAMLR. One of the most striking changes over the past 30 years is the increase in the number ... with the 30th meeting of the CCAMLR Scientific Committee. Over those 30 years, several thousand scientific ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 167 : Author(s): Editors