Search results
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A composite recruitment index to describe interannual changes in the population structure of Antarctic krill at South Georgia
from both the eastern and western ends of South Georgia were selected for further analysis by Watkins ... for the eastern and western survey areas carried out during the Core Programme (see Figure 1). Using ... ., 1997 and in press) shows that this is frequently the case, especially within the area of the eastern ... were only found in offshore waters at the eastern end of the island. The calculation of recruitment ... Paper Title: A composite recruitment index to describe interannual changes in the population ... substantial differences, due in part to bias arising from a large number of krill in just one of the station ... %), while between 1994 and 1998 the number of 1+ krill found in the population increased with a very ... successful recruitment year due to krill spawned in 1994/95. File: 06watkins.pdf ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 71–84 : Author(s): Watkins, J.L
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Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of tag-detection rates
time by applying the method to the annual fishing trips for each vessel. methods Initially, the case ... is defined as an individual vessel, but the analysis is later extended to vessel- season (trip ... between 15 January and 28 February. Each vessel is assigned a unique trip number for each season, which ... Paper Title: Quantifying vessel performance in the CCAMLR tagging program: spatially and ... tagging program is critical to the successful management of a number of toothfish fisheries in Antarctica ... . In particular, tag-detection rates are directly linked to stock size estimated from the tag data in ... an integrated stock assessment. Previous attempts to assess the relative reliability of vessels in ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 73–80 : Author(s): Mormede, S. and A. Dunn
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Scientific observations in CCAMLR fisheries – past, present and future
at the end of each fi shing trip and email them to the CCAMLR Secretariat3. This is important because ... damaged during interaction with marine mammals. Low Estimation of the number of hooks lost. has ... Paper Title: Scientific observations in CCAMLR fisheries – past, present and future Abstract ... -independent studies are difficult and expensive to conduct. In addition, the size of the Convention Area, its ... remoteness and prevailing inclement weather further complicate matters. Therefore, in addition to the ... observers on board fishing vessels has assumed prominence in the collection of essential data for fisheries ...
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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A review of the effectiveness of streamer lines as a seabird by-catch mitigation technique in longline fisheries and CCAMLR streamer line requirements
that signifi cantly fewer baits were lost to fulmars, and in one experiment, that fi sh catch signifi cantly ... and the Australian eastern tuna and billfi sh pelagic fi shery. Sullivan and Reid (2002) collected data on seabird ... . Seabird interactions with long- l ining operations for Dissostichus eleginoides at the South Sandwich ... technique in longline fisheries and CCAMLR streamer line requirements Abstract / Description: Based to a ... large degree on the precedent set by CCAMLR in 1991, the streamer line has become the primary, and most ... commonly prescribed, seabird mitigation device in world longline fisheries. This paper reviews CCAMLR ... streamer line requirements (Conservation Measure 25-02 (2002), formerly Conservation Measure 29/XIX) in ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 189–201 : Author(s): Melvin, E.F., B. Sullivan, G. Robertson and B. Wienecke
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Mesopelagic fish of the Southern Ocean - summary results of recent Soviet studies
lost as breeders and could be exploited without harming the main population in the notal zone. A catch ... on the biology of abundant myctophids of the eastern part of the Atlantic sector of the Southern Ocean ... of habitat of E. carlsbergi (Tl'ining, 1932), family Myctophidae, and its relation to the zonal structure ... these species are summarized in tables with details on area, season and source of data. Some data, e.g ... . length composition of samples, are also illustrated in figures. The importance of studies on the role of ... myctophids in the Antarctic ecosystem is highlighted. File: 26-Sabourenkov.pdf ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 433–457 : Author(s): Sabourenkov, E.N.
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A possible framework in which to consider plausible models of the Antarctic marine ecosystem for evaluating krill management procedures
to ensure that critical processes are not necessarily lost in the process of formulating summary functions ... , M. and P.V. Switzer. 1998. A model at the level of the foraging trip for the indirect effects of krill ... Paper Title: A possible framework in which to consider plausible models of the Antarctic marine ... management procedure for the krill fishery, including the evaluation of candidate management procedures in a ... framework for allowing flexibility in dealing with biological, spatial and temporal scales. The body of the ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 99–117 : Author(s): Constable, A.J
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Biogeographic patterns of benthic invertebrate megafauna on shelf areas within the Southern Ocean Atlantic sector
region along the shelf of the Peninsula, as well as eastern and southeastern shelf areas of Elephant ... . South Georgia and the South Sandwich Islands), was on the eastern shelf (Figure 10). However ... , at the eastern extremes of both shelf systems a greater complexity is indicated. The role iceberg scouring ... and are reported also from the intensely ice- scoured shelves of the eastern Weddell Sea (Gutt and Piepenburg ... the Weddell water masses that meet and mix in this region. Evident at smaller spatial scales are the ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 167–192 : Author(s): Lockhart, S.J. and C.D. Jones
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Krill (Euphausia superba Dana) resources and distribution in the Wilkes Land area in the seasons 1986 to 1989
, BbInOJIHeHHbIX B 1986-1989 rr. UPI-I CbeMKax OCHOBHoe BHI-IMaHl-le 6bIJIO COCpe.z:.OTOlleHO Ha nOI-lCKaX npl ... and eastern parts of the subarea were not so dense (136 to 327 tonnes per square mile); nevertheless krill ... observed here. In 1989, krill aggregations were located in the central and eastern parts of the subarea ... in this part of the subarea as well as in the eastern part. Their density was lower by a factor of 4 (574 ... 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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Potential nursery areas for fish in the Prydz Bay region
it, but the southern, eastern and western margins had low or zero catches. The length frequency distribution (Figure ... , except in one station near the shelf edge at the eastern side of the bay (Figure 4). A wide range ... Paper Title: Potential nursery areas for fish in the Prydz Bay region Abstract / Description: A ... survey with a fine-meshed midwater trawl in Prydz Bay in January/February 1991 indicated the potential ... all juvenile fish were caught in the top 50 m over the shelf, and more than 95% were Pleuragramma ... antarcticum. This species was abundant (up to 9 100 were caught in a 30 minute haul) especially near the shelf ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 369–380 : Author(s): Williams, R.
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A statistical method for estimating the level of IUU fishing: application to CCAMLR Subarea 48.3
distributions of IUU trip length. Estimates of p derived from these runs (i.e. for sightings in 1998, 1999 ... , and confidence intervals for, fish and bird catches by IUU vessels. In order to estimate an IUU catch ... there must have been at least one encounter with an FPV in a year; no encounters in a year are ... to have been observed when the IUU vessel and the FPV vessel were in the same place at the same time ... observed. These data were obtained in the early licensed fishery (1997) when few vessels used mitigation ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 119–141 : Author(s): Agnew, D.J. and G.P. Kirkwood