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A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem
ecosystem Abstract / Description: The history of human harvests of seals, whales, fish and krill in the ... hypothesis of a krill surplus in the mid-20th century is described, and the information on population and ... ) species. The model commences in 1780 (the onset of fur seal harvests) and distinguishes the Atlantic ... /Indian and Pacific Ocean sectors of the Southern Ocean in view of the much larger past harvests in the ... recently finfish exploita- tion commenced in the 1960s, and that of Antarctic krill (Euphausia superba ... began in the late 1960s, with catches peaking at over half a million tonnes in the 1981 season, and ... could have led to increases in these populations commenc- ing in the middle decades of the 20th century ... , whales, fish and krill in the Antarctic is summarised briefly, and the central role played by krill ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Autor(es): Mori, M. and D.S. Butterworth
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Telemetry monitoring of ecological resources
1960s. Monitoring activity has steadily increased since that time with an increase in numbers and ... system developed at the University of Minnesota in the mid-1960s 20 • It used two mechanically rotating ... commercial transistor in the late 1950s, the application of electronics to the monitoring of biological ... parameters in wildlife has steadily progressed. Although some early remote sensing was done using ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 495-511 : Autor(es): Kuechle, V.B.
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Book review: Fish and Fish Resources of the Antarctic
research expeditions in Antarctica. The introduction notes that until the 1960s Antarctic waters were still ... began regular, largescale multidisciplinary studies here in the early 1960s. Starting from the first ... work by K.V. Shust (Doctor of Biological Sciences), published in 1998, remains fairly unknown beyond a ... fish species. Moreover its value is enhanced by the author having participated in many fisheries ... m). The author also analysed the zoogeographic zonation carried out in the 1960s and more fully ... , Russia antarctica@vniro.ru Published in Russian by: Russian Federal Research Institute of Fisheries ... I Brief essay of the Antarctic ichthyofauna Chapter I1 Fish distribution in Antarctic waters 1 ... resources Literature Cited This work by K.V. Shust (Doctor of Biological Sciences), published in 1998 ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 165–168 : Autor(es): Shust, K.V
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Brief report of the joint Soviet-Australian expedition of the USSR FRV Professor Mesyatsev to the Australian fishing zone around the territory of Heard and McDonald Islands, May-August, 1987
austral winter. Stability of the aggregation is discussed in relation to the environmental conditions. The ... areas were the area of aggregation of ~. gunnari; Banks Shrednaya (middle), vostochnaya (eastern ... layers, characteristic of planktonic organisms, in the upper and middle strata of the water column ... in relation to the environmental conditions. The unique character of Heard's population of C. ~ari ... outcome of the investigations in the Australian Fishing Zone around Heard and McDonald Islands; its ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 75-103 : Autor(es): Gherasimchook, V.V., V.N. Brodin, A.V. Kljausov, I.B. Russelo, P.V. Tishkov and N.B. Zaremba
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A review of the diet and at-sea distribution of penguins breeding within the CAMLR Convention Area (submitted to the 2008 Joint CCAMLR-IWC Workshop)
in an ecologically sensitive manner demands that catches do not depress stocks within the foraging ... . These models require information on the number of predators in a population, their nutritional demands ... , their diet composition and their seasonal distribution in the marine environment. This paper reviews all ... published information on the diet and at-sea distribution of the six penguin species that breed in the CAMLR ... 1994. Birds travelled for c. 30 days to areas of perennially consistent pack- ice in the eastern Ross ... interest is increasingly focusing on fine-scale spatial distribution of food consump- tion by predators in ... produce estimates of total prey consumption require data on the number of indi- viduals in a population ... ) where three of the focal penguin species breed, is included in order to ensure that the review is ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 75–114 : Autor(es): Ratcliffe, N. and P. Trathan
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Operational interactions of sperm whales and killer whales with the Patagonian toothfish industrial fishery off southern Chile
eleginoides) fishery operations were assessed in southern Chile during surveys with observers on board ... %. Considering that no interactions were recorded in 153 (84%) of the effectively monitored sets, and that the ... (Dissostichus eleginoides) fi shery operations were assessed in southern Chile during surveys with observers on ... between 0 and 100%. Considering that no interactions were recorded in 153 (84%) of the effectively ... Patagonian toothfi sh (Dissostichus eleginoides) fi sh- ery operations have been reported to occur in the ... areas in which interactions have been reported include the Falkland/Malvinas Islands and the southern ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 127–140 : Autor(es): Hucke-Gaete, R., C.A. Moreno and J. Arata
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The foraging range of Adélie penguins at Béchervaise Island, Mac. Robertson Land, Antarctica, and its overlap with the krill fishery
when the sea became ice free to the coast. Concentrations of krill, Euphausia superba, which have in ... . Robertson Land Coast (approximately 150 000 pairs) and any future harvest of krill in the region. The ... in the South Shetland and South Orkney Islands and reflects the distance offshore of krill, one of ... the sea became ice free to the coast. Concentrations of krill, Euphausia superba, which have in the ... . Robertson Land Coast (approximately 150000 pairs) and any future harvest of krill in the region. The ... birds in the South Shetland and South Orkney Islands and reflects the distance offshore of krill, one ... must remain in the colony to brood, guard and feed their chicks and the frequency of feeding visits ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 337–344 : Autor(es): Kerry, K.R., J.R. Clarke and G.D. Else
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The ecosystem approach to managing fisheries: achieving conservation objectives for predators of fished species
in its infancy. A general approach is proposed for maintaining ecological relationships and providing ... for the recovery of depleted populations in food webs supporting fisheries. This paper addresses the ... objectives? The approach proposed here takes account of uncertainties in knowledge of the structure of ... ecosystems. Estimates of predator production arising from the consumption of fished species (encapsulated in ... interactions distant in the food web from the fished species. Figure 4: Food web of the Eastern Bering Sea ... as a whole, i.e. the effect of lost production in the system, or could be subdivided to explore the ... - andrew.constable@antdiv.gov.au Abstract Managing fisheries to achieve ecosystem objectives is in its infancy ... ecosystem approach to the management of fisl~eries, particularly in relation to the krill fishery. This is ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 37–64 : Autor(es): Constable, A.J
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Further computations of the consequences of setting the annual krill catch limit to a fixed fraction of the estimate of krill biomass from a survey
relate potential krill yield to a pre-exploitation survey estimate of krill biomass. In this paper, the ... fishing mortality, as specified by the Fourth Meeting, results in marked reductions in the probabilities ... / l2 to 5/12), while the pre-exploitation biomass survey is assumed to take place in the middle of ... . and for model 2: The survey estimate of biomass is made in the middle of the growth season (i.e. mid ... ' y = 10 (the year before fishing commences), 'measure' the a+ biomass in mid-season (i.e., the middle ... -exploitation survey estimate of krill biomass. In this paper, the approach is extended further so as to ...
Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 81–106 : Autor(es): Butterworth, D.S., G.R. Gluckman, R.B. Thomson, S. Chalis, K. Hiramatsu and D.J. Agnew
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Preliminary appraisal of Antarctic fish selection by the 32/36 bottom trawl combined with various codends
. It was found that the selectivity properties of twine codends are unsatisfactory in the case of ... used in fishing for them requires further research. It should first of all cover twine codends with a ... selection. In fact, they constituted the middle and final part of a typical selectivity ogive, which was ... -meshed Inset In lower part Of codend E - 5 floats
Lost segment of ... selectivity properties of twine codends are unsatisfactory in the case of Antarctic icefish, burnphead ... Sea icefish and South Georgia icefish the determination of a proper mesh size of trawls used in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 1-48 : Autor(es): Zaucha, J.