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
in longitudinal sections of teeth. Mean age at death was 7∙69 ± 0∙07 years and this showed a small but significant ... 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 ... was deposited. There was significant variation in the depth of tooth growth layers deposited in different years ...
Meeting Document : WG-CEMP-93/11 : Author(s): I.L. Boyd and J.P. Roberts (United Kingdom)
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Seabird research at Cape Shirreff, Livingston Island, Antarctica, 2005/06
and is the third lowest population size in the 10 years of census data. The chinstrap penguin breeding population ... has been declining for the Past eight years and is at its lowest size in the 10 years of study. Gentoo ... penguin fledging Success was the highest recorded in all the years of study. The fledging success ... and was slightly higher than the previous eight year mean. Gentoo penguin fledge weights for this season ...
Meeting Document : WG-EMM-06/P1 : Author(s): E.S.W. Leung, R.A. Orben and W.Z. Trivelpiece (USA)
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Fishery Report: Dissostichus eleginoides Crozet Island inside the French EEZ (Subarea 58.6)
of the following year, the season used in this report is the CCAMLR season (1 December to 30 November ... to the present. The fishery was active all year. A high level of depredation on D. eleginoides catches from ... of the following year). 40°E 45°E 50°E 55°E 60°E 50°S 48°S 46°S 44°S B C D 58.6 French EEZ ... . 3. Summary of the longline fishery 6. Reported catches by year and nationality for longline vessels ...
Document : Site Section: Publications
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COLTO Depredation Workshop
; and operational guidelines in regards to depredation. A second depredation workshop is planned for 2018, aimed ... projects have been developed and will begin in October 2016. The first, a 4-year project covering ... ; and the second, a 2-year project covering other toothfish fisheries. Author(s): Submitted by COLTO Title: COLTO ... ; and operational guidelines in regards to depredation. A second depredation workshop is planned for 2018, aimed ...
Meeting Document : SC-CAMLR-XXXV/BG/23 : Author(s): Submitted by COLTO
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A generalised model for evaluating yield and the long-term status of fish stocks under conditions of uncertainty
(a) 1.21 I 0 10 20 30 40 50 60 Length (mm) Selectivity (b) 1.6 1 1 0 2 4 6 Age (years) Relative ... of Uncertainty (a) Run 1 Biomass (thousand tonnes) Recruits (millions) 0 10 20 30 40 50 Years (b) Run ... -exploitation spawning biomass at some time over the 20-year projection period is equal to 10%. + Values ... 1 0.8 0.6 0.4 0.2 0 0 10 20 30 40 50 60 Length (mm) Proportion mature (b) 1.6 ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 31–54 : Author(s): Constable, A. and W.K. de la Mare
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Seabird research at Cape Shirreff, Livingston Island, Antarctica, 2003–2004
to decline over the past five years, and is at its lowest size in the past seven years of study. While ... the gentoo breeding population increased slightly from last year, it is at its second lowest size in the past ... seven years. Chinstrap fledging success was higher during the 2003-04 breeding season than ... in the previous season, but lower than the average for the past seven years. Gentoo fledging success in 2003-04 ...
Meeting Document : WG-EMM-04/5 : Author(s): M. Antolos, A.K. Miller and W.Z. Trivelpiece (USA)
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Observations on haul-out patterns and trends in the breeding populations of southern elephant seal at Península Valdés (Patagonia) and Stranger Point (25 de Mayo - King George I.)
present information on the last seven years in two breeding places belonging to the Georgia stock. Two ... Stranger and Elefante Point was fixed (62°14' S '" - 58°30' W). The other place was located at Peninsula ... was determined to be representative of the original area and it was used every year to collect the information ... ashore corresponding to 27/10, rank ± 3 to Stranger Point and to 30/9, rank ± 5 to Peninsula Valdes ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 453-463 : Author(s): Vergani, D.F., M.N. Lewis and Z.B. Stanganelli
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Parameters for a model of the functional relationships between krill escapement and crabeater seal demographic performance
maturity was estimated to be 3.8 years. Of 44 annual estimates of historical cohort strength, 16 were ... judged to represent “ good" years for demographic performance, 18 as "poor" years, and 10 ... as "bad" years. Author(s): P.L. Boveng and J.L. Bengtson (USA) Title: Parameters for a model ... maturity was estimated to be 3.8 years. Of 44 annual estimates of historical cohort strength, 16 were ...
Meeting Document : WG-CEMP-93/04 : Author(s): P.L. Boveng and J.L. Bengtson (USA)
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Draft Research and Monitoring Plan for the South Orkney Islands Southern Shelf Marine Protected Area (MPA Planning Domain 1, Subarea 48.2)
is based on the draft initially proposed in 2014 (SC-CAMLR-XXXIII/11) and revised in 2018 (SC-CAMLR-XXXVII ... on the draft initially proposed in 2014 (SC-CAMLR-XXXIII/11) and revised in 2018 (SC-CAMLR-XXXVII/09). It aims ...
Meeting Document : WG-EMM-2019/31 : Author(s): S.M. Grant and P.N. Trathan
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Interannual variability of krill, salp and other zooplankton populations in the South Shetland Island area during Austral summer 1993–1998
recruitment from the past two years. Unusually small juvenile krill in 1998 suggested that survival success ... the 1993 "salp year". The magnitude of this salp bloom may have resulted from a large ... regimes identified here as "cope pod years", "salp years" and "transition periods ... ". The 4-5 year periodicity of "salp years" over the past fifteen years is discussed ...
Meeting Document : WG-EMM-98/50 : Author(s): V. Loeb, W. Armstrong, R. Hewitt (USA) and V. Siegel (Germany)