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CCAMLR ecosystem monitoring and management: future work
: Harvesting of marine living resources in the Southern Ocean is managed by the Commission for the Conservation ... of Antarctic Marine Living Resources (CCAMLR). CCAMLR is widely known for its ecosystem approach to ... managing fisheries with the maintenance of ecological relationships included in the conservation objectives ... . In the late 1980s, CCAMLR’s precautionary approach was developed, incorporating principles of how to ... volume. This paper discusses the future steps which need to be addressed in the development of such a ... @antdiv.gov.au Abstract Harvesting of marine living resources in the Southern Ocean is managed by the ... Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR). CCAMLR is widely known for ... its ecosystem approach to managing fi sheries with the maintenance of ecological relationships ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 233–253 : Autor(es): Constable, A.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
the principles and approach required for developing small-scale management units to take account of ... considering the scales of management units involving the integration of local populations of harvested species ... , foraging areas of predators, fishing grounds and the potential influences of the environment, including ... oceanography and metapopulation structure of the harvested species. The integration of these components ... for a theoretical discussion). The aim of this paper is to discuss the issues of scale and how ... management units to take account of predators’ needs when managing the fi shery for Antarctic krill. It ... provides a theoretical foundation for considering the scales of manage- ment units involving the ... integration of local populations of harvested species, foraging areas of predators, fi shing grounds and the ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 117–131 : Autor(es): Constable, A.J. and S. Nicol
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Otolith and body size relationships in the mackerel icefish (Champsocephalus gunnari)
) Abstract / Description: A large sample of otoliths from the mackerel icefish (Champsocephalus gunnari) was ... measured and weighed and their effectiveness as predictors of fish length and fish mass determined. The two ... measures, otolith length and otolith mass, provide good predictors of fish length, the latter being ... Paper Title: Otolith and body size relationships in the mackerel icefish (Champsocephalus gunnari ... otolith lenggusing the equations of North et al. (1983) and those in this paper. The assistance of ... . Interannual variation i n condition of the mackerel icefish. 7. Fish Biol., 51: 146-154. This Paper 23 ... Kingdom Abstract A large sample of otoliths from the mackerel icefish (Champsocephalus gunizari) was ... measured and weighed and their effectiveness as predictors of fish length and fish mass determined. The ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 117–123 : Autor(es): Everson, I., B. Bendall and A. Murray
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Assessing the power to detect systematic change in Adélie penguin foraging trip duration
duration Abstract / Description: Models of variability in Adélie penguin foraging trip durations were ... variability among years was greater in the guard stage. Estimates of variability were used to explore the ... greater in the crèche stage than the guard stage. The gain obtained by increasing the number of penguins ... per penguin. Statistics were developed to test for three forms of change (step, trend and ramp). A ... framework but is beyond the intent and scope of this paper. Step change model In this model it is assumed ... . Clarke and L.M. Emmerson Australian Antarctic Division Department of Environment and Heritage Channel ... Highway, Kingston 7050 Tasmania, Australia Abstract Models of variability in Adélie penguin foraging ... in the crèche stage, but variability among years was greater in the guard stage. Estimates of ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 201–215 : Autor(es): Southwell, C., J. Clarke and L.M. Emmerson
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Environment–krill relations in the South Georgia marine ecosystem
study, time series of krill abundance (CPUE) indices were derived from Soviet fishing operations in the ... atmospheric components of the system, and there are also correlations with CPUE data. The CPUE index generally ... agrees with other data which give direct or indirect indications of krill availability, suggesting it can ... were only expressed strongly in years of extreme conditions. The correlation with water temperature was ... distribution at one or more scales. In this paper a time series of the catch per unit effort (CPUE ... RELATIONS IN THE SOUTH GEORGIA MARINE ECOSYSTEM P.P. Fedoulov Atlantic Research Institute of Marine ... , Madingley Road Cambridge CB3 OET, United Kingdom K.E. Shulgovsky Atlantic Research Institute of Marine ... study, time series of krill abundance (CPUE) indices were derived from Soviet fishing operations in the ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 13–30 : Autor(es): Fedoulov, P.P., E. Murphy and K.E. Shulgovsky
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Krill population biology during the 1991 Chilean Antarctic krill fishery
/ Description: Population biology of Antarctic krill, Euphausia superba, was studied from samples taken in 1991 ... size from 1.5 to 3 cm). Two subsamples of 100 specimens each were taken from 50 samples and analysed ... . The fishing ground was divided into two areas: Area A, north of the South Shetland Islands; and Area B ... , north of Elephant Island. The samples were grouped by time of capture: daytime, twilight and night-time ... . EBERHARD. 1991. Chilean krill fishery: analysis of the 1991 season. In: Selected Scientific Papers, 1991 ... biology of Antarctic krill, Euphausia superba, was studied from samples taken in 1991 during krill ... from 1.5 to 3 cm). Two subsamples of 100 specimens each were taken from 50 samples and analysed. The ... fishing ground was divided into two areas: Area A, north of the South Shetland Islands; and Area B, north ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 223–235 : Autor(es): Mujica R., A., E. Acuña S. and A. Rivera O.
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The 1991/92 fishery for Dissostichus eleginoides in Subarea 48.3
November 1991 to 10 March 1992. A total of 3 382 tonnes was taken by one Bulgarian, five Russian and eight ... influenced by fishing depth, time of day or soak time, but was dependent on type of hook and geographical ... position. Fish caught around Shag Rocks were larger than to the north and southeast of South Georgia. CPUE ... 0.2 in the Bulgarian. These differences were probably a result of the different hook types used by the ... fishery of Dissostichus eleginoides (nototheniidae) off the Chilean coast. In: Selected Scientific Papers ... Dissostichus eleginoides in Subarea 48.3 was open from 4 November 1991 to 10 March 1992. A total of 3 382 ... five-day period was 375 tonnes. Catch rate was not influenced by fishing depth, time of day or soak ... time, but was dependent on type of hook and geographical position. Fish caught around Shag Rocks were ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 31–48 : Autor(es): Agnew, D.J. and C.A. Moreno
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Krill (Euphausia superba) distribution in relation to water movement and phytoplankton distribution off the northern South Shetland Islands
1990/91 a survey was conducted by RV Kaiyo Maru in the vicinity of the South Shetland Islands and ... Elephant Island. The main objective of the survey was to investigate the mechanisms responsible for the ... concentration of krill and to estimate krill biomass in the area surveyed. Krill biomass estimation was done by ... means of hydroacoustics. Phytoplankton distribution was assessed by measuring surface concentrations of ... Japanese trawler in the waters north of Livingston Island in January 1988. In: Selected Scientific Papers ... information for these matters, this paper will present the distributional pattern of krill biomass in ... conducted by RV Kaiyo Maru in the vicinity of the South Shetland Islands and Elephant Island. The main ... objective of the survey was to investigate the mechanisms responsible for the concentration of lain and to ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 123–140 : Autor(es): Ichii, T., H. Ishii and M. Naganobu
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Australian research on Antarctic bird and seal diets
data on the diets of important vertebrate predator species in Prydz Bay and around the sub-Antarctic ... rather low proportion of the diet of most vertebrate predators. Euphausia crystallorophias and the fish ... use of these predators to monitor the state of prey populations is thus very limited, although ... continuing studies will be useful to assess the natural variability of the system. Around the sub-Antarctic ... individual publications. The aim of this paper is rather to bring to CCAMLR's attention the large body of ... BIRD AND SEAL DIETS R. Williams Abstract Many data on the diets of important vertebrate predator ... priority study area, Euphausia superba forms a rather low proportion of the diet of most vertebrate ... , and many predators can switch between prey species. The use of these predators to monitor the state ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 231-249 : Autor(es): Williams, R.
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Some principles for fisheries regulation from an ecosystem perspective
/ Description: The paper discusses some principles to be considered in the formulation of a framework for the ... regulation of fisheries from an ecosystem perspective, under the Convention for the Conservation of Antarctic ... regulation which have a more rigorous scientific interpretation than the broad principles of conservation set ... framed in terms of quantities which can be robustly estimated, thus allowing the degree to which ... paper to examine in detail the strengths and weaknesses of various models used in fishery management ... this paper is relatively brief, it should serve to illustrate that the design of a regulatory ... principles to be considered in the formulation of a framework for the. regulation of fisheries from an ... ecosystem perspective, under the Convention for the Conservation of Antarctic Marine Living Resources. An ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 323-339 : Autor(es): de la Mare, W.K.