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Analysis of haul data from the South Georgia krill fishery
existed between years, with 1995 being a better season than either 1994 or 1996. Aspects of mesoscale ... several hauls were undertaken by each vessel (average 7.9 in 1993,9.9 in 1995, and 7.0 in 1996), with ... hauls producing higher catch rates during the middle of the day. Individual hauls were examined to ... establish the time required for each phase of the fishing operation. The times associated with shooting and ... deviation (SD) and median with first and third quartile. Year 1994 1995 1996 n 2 025 3 035 2 854 ... years, with 1995 being a better season than either 1994 or 1996. Aspects of mesoscale variability are ... . Thus, the total number of vessel fishing days was variable between years, with 255 vessel days in ... ., 1997), however the movement towards the west does not occur in all years (Figure 3). The movement is ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 9–30 : Autor(es): Trathan, P.N., I. Everson, E.J. Murphy and G.B. Parkes
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Antarctic krill and ecosystem management – from Seattle to Siena
(2002 – this volume), with the three papers documenting developments during CCAMLR’s first 20 years of ... to be consistent with the objectives of the CAMLR Convention, particularly its Article II. Emphasis ... for Antarctic krill (Euphausia superba) has existed since the early 1970s, with catches peaking at ... ecosystem concerns, precautionary approaches and inte- gration with non-fi sheries interests. Later ... in conjunction with later work (e.g. Bengtson, 1984; Lubimova et al., 1985), SC-CAMLR recognised in ... prolonged winter sea-ice cover leads to early krill maturation and spawning with subsequent enhanced ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 175–212 : Autor(es): Miller, D.G.M
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An overview of Southern Ocean zooplankton data: abundance, biomass, feeding and functional relationships (submitted to the 2008 Joint CCAMLR-IWC Workshop)
for differences in the extent of identification of early larval stages. Likewise, the time of year ... an enormous amount of data on Southern Ocean (SO) zooplankton, mostly on their distribution with a ... assist SO food-web modellers or those with limited specialist knowledge of SO zooplankton. First, a brief ... overview is provided of the diversity and basic biology of SO zooplankton, with an emphasis on abundance ... . Their life cycles involve reproduc- tion and early larvae feeding in summer, with later lipid-rich ... ; Kosobokova, 1994; Ward and Shreeve, 1995) with 3.4–3.8% of their body C lost via respiration. This fits ... First it was simply classed as a herbivore (Marr, 1962) but later studies increasingly emphasised the ... euphausiids are long-lived, with E. superba having a life span of 5–7 years (Siegel, 1987). Two years has ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 171–218 : Autor(es): A. Atkinson, P. Ward, B.P.V. Hunt, E.A. Pakhomov and G.W. Hosie
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Distribution, biomass and characteristics of the Euphausia superba fishery around South Georgia (Subarea 48.3)
was found that the distribution of krill swarms corresponds largely with areas where currents turn ... differences in krill biomass are undoubtedly associated with the volume of krill brought here by waters of the ... the island (Marr, 1962; MacIntosh, 1972; Makarov et al., 1980). As opposed to aggregations in the ... consistent with the location of sites with high abundance of krill (Figure 5B). Survey 3 (12 to 18 June ... as correct for the operation of fishing vessels. Summary data from early research in the area (1972 ... whole year depend upon the variability of water dynamics in the mesoscale. Variability associated with ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 123–147 : Autor(es): Latogursky, V.I., R.R. Makarov and L.G. Maklygin
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The biology, ecology and development of fishery management advice for the anomuran crabs at South Georgia (CCAMLR Subarea 48.3)
poorly understood with great uncertainty surrounding their trophic ecology and life histories. Recent ... undertaken if there is continued interest in the fishery. However, low market value and interest coupled with ... , 1972), P. formosa (Henderson, 1888) and P. anamerae (Macpherson, 1988) occur along with Neolithodes ... some species (Table 3) as well as length–weight relationships (Table 4). Growth In common with all ... distributed globally in the deep sea, with a few genera occurring inter-tidally at high latitudes in the ... poorly understood with great uncertainty surrounding their trophic ecology and life histories. Recent ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 1–15 : Autor(es): Belchier, M., T. Peatman and J. Brown
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Book review: Fish and Fish Resources of the Antarctic
began regular, largescale multidisciplinary studies here in the early 1960s. Starting from the first ... research expeditions in Antarctica. The introduction notes that until the 1960s Antarctic waters were still ... Antarctic Research), and later, after the coming into force of the Convention on the Conservation of ... until the 1960s Antarctic waters were still among the most poorly studied regions from the point of ... here in the early Starting from the first South Atlantic expedition carried out by the research ... under the auspices of SCAR (Scientific Committee for Antarctic Research), and later, after the coming ... knowledge acquired by the author over a period of more than 30 years allowed lum to analyse both the ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 165–168 : Autor(es): Shust, K.V
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Biological characteristics of Antarctic fish stocks in the southern Scotia Arc region
sexual maturity and length at first spawning in Champsocephalus gunnari was one year later on the ... , despite substantial catches in the first four years of the fishery and ample opportunity to sample these ... catches. The only scientific surveys of these stocks during these years were conducted by Germany in 1985 ... evidence of illegal fishing since the closure of the region some 10 years ago. Differences in length-weight ... Charnpsocephalus gunnari and later the nototheniid Patagonotothen gtintheri around Shag Rocks, with some of the ... for some years in the late 1980s. Since the early 1990s, the fishery was almost exclusively a ... were provided in Table 3. Some results should be regarded with considerable caution: samples of L ... years. The area with the largest influence of Weddell Sea water appeared to be the South Orkney ...
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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The role of fish as predators of krill (Euphausia superba) and other pelagic resources in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)
the low Antarctic were made in the late 1970s/early 1980s. Those estimates were constrained by a ... were extended to the mesopelagic realm and the high-Antarctic Zone in the late 1980s and early 1990s ... nototheniids, and that the importance of krill in fish diets varies substantially both with time and location ... on various scales, as well as with the availability of alternate prey in the different regions in the ... of sexually mature 3–4-year-old E. carlsbergi while south of the APFZ 2–3-year- old immature fish ... means a pristine environ- ment. Human exploitation of the Southern Ocean started some 225 years ago ... in the late 1970s/ early 1980s. Those estimates were constrained by a paucity of biomass estimates ... mesopelagic realm and the high-Antarctic Zone in the late 1980s and early 1990s when these areas were ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 115–169 : Autor(es): Kock, K.-H., E. Barrera-Oro, M. Belchier, M.A. Collins, G. Duhamel, S. Hanchet, L. Pshenichnov, D. Welsford and R. Williams
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A rationale for conservation areas within Antarctic waters
b CJleAYlOlI.{l1X paHoHoB npl1MeHeHHn Mep no coxpaHeHHIO: 700 3.A.- 15 0 3.A· 15 03.A.- 400 B.A ... · 40oB.A.- 900B·A· 90oB.A.-150oB.A. 150oB.A.-16003.A. 1600 3.A.- 700 3.A· AaIOTcn npHMephl B03MO)l ... in earlier years within the sector from 700 W to 160o W. More recently there has been a move within ... ) within a unit. To date, apart from an early effort to identify separate stocks of whales (discussed ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 513-535 : Autor(es): Chittleborough, R.G.
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A declining trend in the abundance of Notothenia rossii marmorata and Notothenia gibberifrons observed in fjords in two sites in the South Shetland Islands
as significant. The material for the current study was obtained with trammel nets at Potter Cove ... , King George/25 de Mayo I., over a period of eight years from 1983 to 1990 and in waters around Half ... species in relation to Notothenia neglecta, a species with similar ecological habits in the fjords. Since ... sampling by this method did not utilize a consistent amount of effort between years, the analysis made use ... number of specimens of N. neglecta. Differences between years have been tested with a nested ANOV A ... material for the current study was obtained with trammel nets at Potter Cove, King George/25 de Mayo 1 ... ., over a period of eight years from 1983 to 1990 and in waters around Half-Moon 1., Moon Bay, in 1989 ... Notothenia neglecta, a species with similar ecological habits in the fjords. Since sampling by this method ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 263–274 : Autor(es): Barrera-Oro, E. and E. Marschoff