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Identifying taxonomic groups vulnerable to bottom longline fishing gear in the Ross Sea region
Paper Title: Identifying taxonomic groups vulnerable to bottom longline fishing gear in the Ross ... vulnerable marine ecosystems (VMEs) requires a specific list of the taxa that are considered vulnerable in ... the fishery being assessed. New Zealand identified an interim list of taxa to monitor in fishery by ... -catch in the Ross Sea as part of its benthic fisheries impact assessment. The rationale for including or ... been identified to genus level. Although no data on the longevity of antipathar- ians in the Southern ... fishery depths, but no soft corals have been observed deeper than 2 000 m. Some of the deep-sea species ... Balleny Islands and northern area seamounts. No samples have been collected from the eastern Ross Sea ... IDENTIFYING TAXONOMIC GROUPS VULNERABLE TO BOTTOM LONGLINE FISHING GEAR IN THE ROSS SEA REGION S.J. Parker ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 105–127 : Autor(es): Parker, S.J. and D.A. Bowden
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The utilization of seabird censuses for krill monitoring
Paper Title: The utilization of seabird censuses for krill monitoring Abstract / Description ... : The possibility of using bird observations made at sea as a means of monitoring krill in the Antarctic ... Ocean is explored. No variation source directly linked with krill was identified by means of ... krill abundance. A vector close to multi-normality was obtained, thus suggesting that refinements of the ... of analysis I. From the correspondence analysis of the whole set of data, no major axis can be ... the same methods with the following summary of results No krill regression on species is worth ... regression curves. No such method is attempted here, because of the fact that directions to be tested are ... - 393 - THE UTILIZATION OF SEABIRD CENSUSES FOR KRILL ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 393-425 : Autor(es): Marschoff, E.R., J.G. Visbeek and L.R. Fontana
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Some thoughts on precautionary measures for the krill fishery
Paper Title: Some thoughts on precautionary measures for the krill fishery Abstract / Description ... : The concept of precautionary measures for krill is discussed. A precautionary catch limit, based on ... the potential yield model developed by the CCAMLR Scientific Committee's Working Group on Krill ... precautionary catch limit in large areas, such as Statistical Area 48, but the approach requires considerable ... size is derived from field counts which, since the locations of these sites are known, can be ... some sites, such as South Georgia; and (iv) fine-scale catch and effort data from the krill fishery ... potential foraging range of the breeding sites of the dominant land-based predators. The extent of such a ... zone relative to the predator breeding sites would be 125 km at South Georgia (Figure 1). Outside of ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 1–11 : Autor(es): Everson, I. and W.K. de la Mare
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Low genetic diversity in the Antarctic toothfish (Dissostichus mawsoni) observed with mitochondrial and intron DNA markers
digested with the restriction enzymes, but there was no population differentiation among the three sea ... Paper Title: Low genetic diversity in the Antarctic toothfish (Dissostichus mawsoni) observed ... appeared to be characterised by low diversity; no genetic variation was detected with restriction enzyme ... digests of nine sub-regions of the mitochondrial genome. Polymorphisms were found in four of seven introns ... were found in four of seven introns digested with the restriction enzymes, but there was no population ... MtDNA RFLPs No genetic variation was detected with the RFLP method for the nine regions of mtDNA in ... , 14 nt). The D. mawsoni amplicon contained two variable sites in the con- trol region. One SS fi sh ... the 57 available sequences. Analysis of molecular variance (AMOVA) showed no signifi cant dif fer- en ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 43–51 : Autor(es): Smith, P.J. and P.M. Gaffney
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Biological characteristics of Antarctic fish stocks in the southern Scotia Arc region
Islands. Length compositions and the proportion of large (= old) specimens in the populations provided no ... 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 ... from 1977/78 to 1989/90, and was in its heyday from 1977/78 to 1981/82. Except for Elephant Island, the ... the populations provided no evidence of illegal fishing since the closure of the region some 10 years ... measurements and cluster linkage methods revealed no significant differences from the results of the methods ... (= old) specimens in the catches suggested that no substantial illegal fishing had taken place since ... maturity stage 5/2 or specimens in stage 3, but no specimens in actual spawning condition (stage 4). The ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 1–41 : Autor(es): Kock, K.-H., C.D. Jones and S. Wilhelms
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Analysis of the diet of Champsocephalus gunnari at South Georgia in late summer from 1994 to 1997, Dr Eduardo L. Holmberg surveys
Paper Title: Analysis of the diet of Champsocephalus gunnari at South Georgia in late summer from ... 1994 to 1997, Dr Eduardo L. Holmberg surveys Abstract / Description: The diet composition of the ... superba), followed by the amphipod hyperiid Themisto gaudichaudii, was the main food item around South ... Georgia and Shag Rocks in the period investigated, except in 1994, when the order of importance of these ... 10-55 In the 1994 survey, a set of sampling sites was selected along random tracks with the aim of ... - Table 2). In the subsequent surveys, this set of sampling sites was maintained and enlarged on the ... number of fish sampled and 79% of mature fish. In the same year, no significant association was found ... CCAMLR Science, Vol. 5 (1998): 103-123 ANALYSIS OF THE ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 103–123 : Autor(es): Barrera-Oro, E., R. Casaux and E. Marschoff
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Observation of seabirds in the Southern Ocean in 1988/89
Paper Title: Observation of seabirds in the Southern Ocean in 1988/89 Abstract / Description ... : This paper examines the numerical and species distribution of birds in the sub-Antarctic area of the ... Southern Ocean to the south of 60°S. Thirty minute observations were made daily during daylight hours at 8 ... ports of call. Maps summarize the distribution of 14 bird species as well as of the individual species ... nesting sites. Unfortunately, the marine stage of these birds' life cycle remains a virtual mystery. As a ... than a handful. As a rule, snow, Antarctic and giant petrels were observed at the same time. No birds ... (Prydz Bay) and the Davis Sea on the way to Mirny Station. It is possible that these birds were sighted ... cases more than 200 specimens were observed (in the western part of Prydz Bay). Such a large ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 521–542 : Autor(es): Vagin, A.V. and V.V. Popov
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An assessment of the merits of length and weight measurements of Antarctic krill Euphausia superba
Paper Title: An assessment of the merits of length and weight measurements of Antarctic krill ... the relationships of three length measurements to wet and dry weight as functions of sex, maturity ... stage and moult stage. The range of coefficients and exponents for these relationships are examined and ... an example given to indicate the potential such variation has for introducing error into estimates of ... - 371 - SC-CAMLR-VI/BG/33 AN ASSESSMENT OF THE MERITS ... Antarctic krill Euphausia superba Dana are standardised with new data on the relationships of three length ... measurements to wet and dry weight as functions of sex, maturity stage and moult stage. The range of ... coefficients and exponents for these relationships are examined and an example given to indicate the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 371-373 : Autor(es): Morris D.J., J.L. Watkins, C. Ricketts, F. Buchholz, and J. Priddle
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Krill biomass assessment in Statistical Area 48 from the RV AtlantNIRO data - Autumn 1989/90
speed was 3.2 to 3.6 knots. The total krill stock on the poorly studied site off the South Sandwich ... Sea. In contrast to this site, the one off the South Orkney Islands is well-established in terms of ... Paper Title: Krill biomass assessment in Statistical Area 48 from the RV AtlantNIRO data- Autumn ... in the South Sandwich and South Orkney Islands areas during a cruise by RV AtlantNIRO in March/April ... to be more accurate in estimating krill biomass in the South Sandwich Islands area since no similar ... stock on the poorly studied site off the South Sandwich Islands was assessed at 3.8 million tonnes ... , most of which was concentrated in the waters of the Weddell Sea. In contrast to this site, the one ... AREA 48 FROM THE RV ATLANTNIRO DATA - AUTUMN 1989/90 A.C. Fedotov* * Abstract A krill biomass ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 115–121 : Autor(es): Fedotov, A.C.
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Natural mortality rate in the mackerel icefish (Champsocephalus gunnari) around South Georgia
Paper Title: Natural mortality rate in the mackerel icefish (Champsocephalus gunnari) around ... South Georgia Abstract / Description: Information on natural mortality rates of the mackerel icefish ... (Champsocephalus gunnari) from the period prior to known large-scale commercial harvesting is discussed. After ... careful consideration of the data and available methods, several errors are noted in earlier estimates ... information on the analyses undertaken. Although mentioned in the WG-FSA report, no discussion is reported ... (1990). Apparently, no analyses using M = 0.35 were undertaken at that time. The recent study by ... the matrix. No information is given in Frolkina and Dorovskikh (1990,1991) about sampling gear ... fish in all fully recruited age classes, and no is the number sampled from the first fully recruited ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 245–257 : Autor(es): Everson, I