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Beyond MSY: a consideration of definitions of management objectives
Paper Title: Beyond MSY: a consideration of definitions of management objectives Abstract ... / Description: The concept of ‘Maximum Sustainable Yield’ (MSY) has provided a useful guideline for resource ... management under the assumptions of a simple population model and simple objectives. This paper explores ... different guidelines under more realistic population models, taking account of the objectives set out in ... comprehension, and reasonable correspondence to the behaviour of resources under exploitation. In the 1950s ... normal fishing gear, and these fish are not included in the stock as commonly thought of. At some point ... older, growth slows down, and at some point - the critical age of Ricker (1948) - losses will exceed ... at first capture (which may be greater than the age of recruitment if selective gear is used) and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 299-322 : Autor(es): Gulland, J.A.
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Precautionary spatial protection to facilitate the scientific study of habitats and communities under ice shelves in the context of recent, rapid, regional climate change
Paper Title: Precautionary spatial protection to facilitate the scientific study of habitats and ... communities under ice shelves in the context of recent, rapid, regional climate change Abstract / Description ... Peninsula region. One of the most evident signs of climate change has been ice-shelf collapse; overall, 87 ... % of the Peninsula’s glaciers have retreated in recent decades. Further ice-shelf collapse will lead to ... tip of the Antarctic Peninsula. No commercial fishing took place south of Antarctic Sound at the tip ... of the Southern Ocean since the 1950s. Science, 295: 1275–1277. Grassle, J.F. and L.S. Morse ... Antarctic Peninsula region (Solomon et al., 2007). Details of the underlying drivers of climate change are ... properties of the marine system are especially important for CCAMLR and include, inter alia, changes in ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 139–151 : Autor(es): Trathan, P.N., S.M. Grant, V. Siegel and K.-H. Kock
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Report to the Scientific Committee for the Conservation of Antarctic Marine Living Resources on the outcomes of the EU-H2020 Project ‘Mesopelagic Southern Ocean Prey and Predators (MESOPP)’ and its utility to SC-CAMLR
Abstract: The objective of the MESOPP project ‘Mesopelagic Southern Ocean Prey and Predators' ... ; is to: Make an inventory of science challenges, stakes and existing policies and develop tools to ... USA, New Zealand, Canada (in the Frame of the Galway statement), Brazil and all active countries ... enhancement of collaborations by eliminating various obstacles in establishing a common methodology and a ...
Meeting Document : SC-CAMLR-38/BG/30 : Autor(es): A.J. Constable, P. Lehodey and P. Koubbi
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Demographic characteristics of the Adélie penguin population on Béchervaise Island after 12 years of study
/decline rates of the Adélie penguin population at Béchervaise Island were found to be more sensitive to ... Paper Title: Demographic characteristics of the Adélie penguin population on Béchervaise Island ... after 12 years of study Abstract / Description: Demographic parameters (age-specific survival rates ... eastern Antarctica after 12 years of monitoring under the CCAMLR Ecosystem Monitoring Program (CEMP). A ... different stages of the breeding season: total penguins present at the end of the arrival period (CEMP ... on the 200 marked nests; and (iii) nest checks of all 18 sub-colonies on the island at the times of ... , situated at Verner Island, 5 km to the east of Béchervaise Island, was also used to detect tagged birds ... were at least 4 years of age when tagged. However, age-specifi c fecundity for younger birds was ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 53–74 : Autor(es): Clarke, J., L.M. Emmerson, A. Townsend and K.R. Kerry
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Population genetic structure of Patagonian toothfish in the West Indian Ocean sector of the Southern Ocean
Paper Title: Population genetic structure of Patagonian toothfish in the West Indian Ocean sector ... of the Southern Ocean Abstract / Description: Molecular markers were used to investigate the stock ... structure of Patagonian toothfish (Dissostichus eleginoides) in the West Indian Ocean sector of the Southern ... Ocean. Four collections of D. eleginoides from Kerguelen (n = 1), Crozet (n = 1) and Prince Edward and ... on D. eleginoides population structure globally suggests the presence of at least three discrete D ... indicated restricted gene fl ow, with fi sh at each of the fi shing locations comprising independent units ... a lack of heterozygotes observed at cmrDe2 (three instances) and cmrDe9 (two instances). There was ... frequencies at BCL and ND2 regions of mtDNA, sample sizes (n), number of haplotypes (A) and gene diversity (h ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 21–32 : Autor(es): Appleyard, S.A., R. Williams and R.D. Ward
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SCAR group of specialists on living resources of the Southern Ocean – Newsletter 3
our Newsletter. Excerpts from J. A. Gulland's letter of October 10, 1975: "At the meeting, several ... Centre of the European Communities, ISPRA, ITALY. The launching of NIMBUS G Satellite is scheduled for ... October 1978. During the two meetings we had at NASA Headquarters in January and February of this year ... Sea Fisheries Branch, Cape Town, S. Africa, and a colleague of G. G. Newman) met at Texas A&M last ...
Document : Site Section: The Organisation
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Use of indices of predator status and performance in CCAMLR fishery management
Paper Title: Use of indices of predator status and performance in CCAMLR fishery management ... Abstract / Description: This paper investigates how data on, or related to, reproductive performance of ... seabird and seal predators,collected as part of the CCAMLR Ecosystem Monitoring Program (CEMP) could be ... used in the management, by CCAMLR, of commercial fisheries. It reviews reasons why it is important for ... 11, is where the "burden of proof" rests. lt is apparently implicit at present that detrimental ... of prey (at present krill) abundance and availability (to the predators}. (iii) To use predator ... ) will rarely be available even at 90%, let alone 95% levels of statistical significance (Croxall et al ... that if predator populations are in trouble, any level of harvesting, if conducted at critical times ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 353–365 : Autor(es): Croxall, J.P.
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A compilation of parameters for ecosystem dynamics models of the Scotia Sea – Antarctic Peninsula region
Paper Title: A compilation of parameters for ecosystem dynamics models of the Scotia Sea ... – Antarctic Peninsula region Abstract / Description: Expansion of the krill fishery in the Scotia Sea ... assessment of methods for subdividing the precautionary catch limit amongst smaller spatial units. This paper ... uncertainty, which must be taken into account when it is used. The sources, assumptions and calculations at ... used. The sources, assumptions and calculations at every stage of the compilation process are ... models must be spatially resolved at least to the scale of SSMUs and must represent krill and predator ... recruit to the adult popula- tion at the age of fi rst breeding. The models are similar in their ... particles released in area m at the beginning of the advection period and ,m nθ is the number of these ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 1–25 : Autor(es): Hill, S.L., K. Reid, S.E. Thorpe, J. Hinke and G.M. Watters
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A review of data on abundance, trends in abundance, habitat use and diet of ice-breeding seals in the Southern Ocean (submitted to the 2008 Joint CCAMLR-IWC Workshop)
Paper Title: A review of data on abundance, trends in abundance, habitat use and diet of ice ... / Description: The development of models of marine ecosystems in the Southern Ocean is becoming increasingly ... important as a means of understanding and managing impacts such as exploitation and climate change ... habitats of the Southern Ocean (i.e. crabeater seal, Lobodon carcinophaga; Ross seal, Ommatophoca rossii ... the late 1940s and early 1950s (Table 1). Laws (1953) estimated the abundances of the four species ... position in the pack-ice at five locations around Antarctica in February (at one of these sites counts of ... ). Regres- sion analysis indicated a unimodal distribution of counts that peaked around midday at all sites ... . A predictive model was then developed to adjust counts at any time of day to those expected at the ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 49–74 : Autor(es): Southwell, C., J. Bengtson, M. Bester, A.S. Blix, H. Bornemann, P. Boveng and M. Cameron, J. Forcada, J. Laake, E. Nordøy, J. Plötz, T. Rogers, D. Southwell, D. Steinhage, B.S. Stewart and P. Trathan
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An assessment of the impact of krill fishery on penguins in the South Shetlands
Paper Title: An assessment of the impact of krill fishery on penguins in the South Shetlands ... Abstract / Description: An assessment of the competition between the Japanese krill (Euphausia superba ... the northern shelf of either Livingston or Elephant Island. In contrast, food consumption by penguins ... is estimated to be high to the north of King George, Nelson and Robert Islands (9 746 tonnes/10-day ... open water may be closely linked to the formation of large colonies of chinstraps at Low, Clarence ... at Seal Island, near Elephant Island, empirical measurements were taken of the foraging ranges of ... chinstrap penguins. These show that chinstraps performed most of their foraging dives at a distance of ... behavior of chinstrap penguins at Seal Island. Antarctic Science, 5 (1): 9-15. CCAMLR. 1993. S ta t i s ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 107–128 : Autor(es): Ichii, T., M. Naganobu and T. Ogishima