Search results
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Tooth growth in male Antarctic fur seals (Arctocephalus gazella) from South Georgia: an indicator of long-term growth history
an indication of body growth, Tooth growth rate was lowest in seals which died early (age 4 years) and increased ... mature early also died early. Tooth growth layers deposited in each calendar year were compared ... an indication of body growth, Tooth growth rate was lowest in seals which died early (age 4 years) and increased ... mature early also died early. Tooth growth layers deposited in each calendar year were compared ...
Meeting Document : WG-CEMP-93/11 : Author(s): I.L. Boyd and J.P. Roberts (United Kingdom)
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Low breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season
all chicks died of starvation), when smaller meals were delivered and birds foraged further offshore ... all chicks died of starvation), when smaller meals were delivered and birds foraged further offshore ... fewer local trips and both sexes spent longer at sea than in years of higher breeding success. Meal ... fewer local trips and both sexes spent longer at sea than in years of higher breeding success. Meal ... season eventually died from starvation. All Trips Mean SE Trips (hf >48 h ("/.l 31.4 1.3 18 ... . These findings contrast with observations made in 1994/95 (a season in which all chicks died of starvation ... were Stomach samples were analysed according to very young: 76% died by the age of 15 days ... during the guard stage. Most of the chicks died when they were young, the time at whch frequent energy ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 151–167 : Author(s): Irvine, L.G., J.R. Clarke and K.R. Kerry
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Scientific Abstracts 1993
breeding the next year, 68% returning two years later, 11% the next and 5% not until the fourth year ... . (English). Entanglement of Antarctic fur seals Arctocephalus gazella in man-made debris at Bird Island ... ). SC-CAMLR-XII/BG/4 Surveys of Antarctic fur seals entangled in man-made marine debris were carried ... on the previous two years and with twice as many seals suffering serious injuries. Almost all animals involved ... submitted for publication, i.e., in CCAMLR Science or elsewhere, which are listed as “in press” with details ... is preceded with a unique CCAMLR document number, e.g. SC-CAMLR-XII/BG/11 (background document number ...
Document : Site Section: Publications
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Long-term trends in the foraging patterns of female Antarctic fur seals at South Georgia
of feeding trips made by an individual’'s mother during lactation. This analysis showed that between ... 1962 and 1981 the mean number of feeding trips made by female fur seals varied markedly. From 1962 ... trips, with 1979 being the year with the fewest trips made during the entire 20 year period. (In press ... , was analyzed to estimate: 1) birth year of individuals, and 2) the number of feeding trips made ... , and 2) the number of feeding trips made by an individual's mother during lactation. This analysis showed ... that between 1962 and 1981 the mean number of feeding trips made by female fur seals varied markedly. From ... of feeding trips, with 1979 being the year with the fewest trips made during the entire 20 year period ... . Bengtson (USA) Abstract The number of feeding trips to sea made by female Antarctic fur seals during ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 441-443 : Author(s): Bengtson, J.L.
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Foraging energetics of Antarctic fur seals in relation to changes in prey availability
at parturition in 1984, and both pup mortality and the proportion of pups that died from starvation were double ... and the proportion of pups that died from starvation were double the 1985 values. Female condition at parturition ... for the observed between-year difference in at-sea FMR of C. ursinus while foraging-trip duration remained fairly ... of lactating female Antarctic fur seals, Arctocephalus gazella, foraging at sea was measured in two years using ...
Meeting Document : SC-CAMLR-VIII/BG/13 : Author(s): Delegation of United Kingdom
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Effects of weather and sea-ice on the reproductive performance of the Adélie penguin at Edmonson Point, Ross Sea
incubation trip. A high number of chicks died during the post-hatching stage and the breeding success was low ... . A high number of chicks died during the post-hatching stage and the breeding success was low with 0.3 ... and persistent sea-ice and strong winds with snowfalls in December. First incubation trips by females were ... and strong winds with snowfalls in December. First incubation trips by females were significantly longer than ... trip. A high number of chicks died during the post-hatching stage and the breeding success was low ... , ROSS SEA S. Olmastroni , F. Pezzo, V. Volpi and S. Focardi Dipartimento di Scienze Ambientali ... ‘G. Sarfatti’ Università degli Studi di Siena Via P.A. Mattioli 4, 53100 Siena, Italy Email – olmastroni ... to year, except for crèching date which was later in 2003. Despite the consistency in timing of breed ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 99–109 : Author(s): Olmastroni, S., F. Pezzo, V. Volpi and S. Focardi
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Interactions between cetaceans and fisheries in Southern Ocean
only occasionally and one whale (presumably a minke whale) died. Author(s): K.-H. Kock (Germany ... occasionally and one whale (presumably a minke whale) died. ... . Sperm whales became frequently entangled in the line and part of the line was lost in a number of cases ... became frequently entangled in the line and part of the line was lost in a number of cases. Other ...
Meeting Document : WG-FSA-05/11 : Author(s): K.-H. Kock (Germany), M. Purves (South Africa) and G. Duhamel (France)
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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)
and recorded dis- tance data to allow estimates of densities of seals hauled out to be made with line transect ... changes regionally, seasonally, or over the long term. Dis- tilling these broad generalisations from ... inade- quate to represent the entire pack-ice. From the late 1960s to the early 1980s, Erickson ... , it is strongly recommended that all of these early estimates be treated only as the good-faith guesses ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 49–74 : Author(s): 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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Commercial krill fisheries in the Antarctic, 1973 to 1988
) fishery between 1972/73 and 1987/88. The annual krill catch rose gradually to a peak of some 500 000 ... superba) fishery between 1972/73 and 1987/88. The annual krill catch rose gradually to a peak of some 500 ... commenced in the early 1960's and initially catches were relatively small (Table 1). The build-up of annual ... 81 82 83 84 85 86 87 88 SPllT-YEAR Figure 2: Reported annual krill catches by country from ... 87 88 SPLIT YEAR Figure 4: Reported annual krill catches by country in Statistical Area 48. 249 ... 81 82 83 84 85 86 87 88 SPLIT YEAR Figure 5: Reported annual krill catches by country ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 229–281 : Author(s): Miller, D.G.M.
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Fishing and conservation in southern waters
Abstract: Fishing in the Southern Ocean commenced on finfish in 1969/70 and on krill in 1972/73 ... and the Kerguelen Islands. After 15 years of exploitation, most fish stocks have been heavily depleted. The krill ... in fragments of discarded or lost fishing gear. Most fish stocks had already been over-exploited before ... scientific observation in 1992. It is too early to judge the efficacy of these enforcement and data gathering ...
Meeting Document : SC-CAMLR-XII/BG/11 : Author(s): Delegation of Germany