Search results
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The 2014 annual random stratified trawl survey in the waters of Heard Island (Division 58.5.2) to estimate the abundance of Dissostichus eleginoides and Champsocephalus gunnari
Abstract: The annual random stratified trawl survey (RSTS) at HIMI was conducted during June of ... 2014, with the completion of 158 stations. An additional five stations were completed at Shell Bank ... , which had not been sampled since 2005. The catches of C. gunnari were less than half of those in 2013 ... , but catches of both D. eleginoides and C. gunnari were higher than the long-term average (2006-2013 ...
Meeting Document : WG-FSA-14/41 : Author(s): G.B. Nowara, T.D. Lamb and D.C. Welsford (Australia)
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Using spatial population models to investigate the effects of a proposed Marine Protected Area on Antarctic toothfish in the Ross Sea region
a large increase in the area with little depletion of the population and no increase in the area ... they usually involve the displacement of fisheries, their design rarely takes into account the effect ... of that fishery’s displacement on the target fish population. We used a spatially explicit population ... model of Antarctic toothfish in the Ross Sea region to investigate the effects of a proposed MPA on the ...
Meeting Document : WG-FSA-15/42 : Author(s): S. Mormede, A. Dunn, S.J. Parker and S.M. Hanchet (New Zealand)
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Interannual variability of polynya extent in the Antarctic Ocean
polynyas influence biological activity in the winter and spring season. However, there are no minute ... ), coastal polynya and open ocean polynya, in the Southern Ocean. Polynya accelerates oceanic and atmospheric ... processes by exposing the surface of ocean to the atmosphere. Additionally, we think that the coastal ... reports on the place, time and shape of the coastal polynyas. Accordingly, we pursued the transition of ...
Meeting Document : WG-EMM-01/34 : Author(s): M. Naganobu and K. Segawa (Japan)
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Results of the longline survey for toothfish in the northern Ross Sea region (Subarea 88.2 SSRUs A–B) by the FV Janas, New Zealand
toothfish populations in the northern areas (60°‑ 66° S) of Subarea 88.2 SSRUs A–B. Sampling strategy and ... and no Patagonian toothfish were caught. Toothfish catch rates, size, sex ratio, and reproductive ... maturity status were similar to existing data from SSRU 88.1C. In contrast, the gonadosomatic index and the ... sex-specific Fulton’s condition factor observed in the northern region of SSRU 88.2B were lower than ...
Meeting Document : WG-SAM-15/46 : Author(s): S.J. Parker, R.J.C. Currey and S. Mormede (New Zealand)
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Calibration of an acoustic echo-integration system in a deep tank, with system gain comparisons over standard sphere material, water temperature and time
de la esfera estandar como valor de referencia de TS, duraci6n del impulso, gama de temperatura ... outlines the theory and procedures for calibrating an echo integration acoustic system with a standard ... sphere. It presents the results of an extensive calibration of a Simrad EK500 scientific echosounder with ... length (0.1, 0.3 and 1.0 ms), target depth (0.8 to 7.5 m), and time (149 days). The total range in TS ... gain, including the effects of temperature, standard sphere and time, is 2.9 dB. Gain values calibrated ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 127–144 : Author(s): Demer, D.A. and R.P. Hewitt
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Research plan for exploratory fishing for toothfish (Dissostichus spp.) in 2015/16 in Division 58.4.2
this Division. In 2014, the fishery was limited to one Japanese and one Spanish flagged vessel using ... longlines only, but there was no fishing activity. France notifies its wish to collaborate in this research ... fishery with the other participants over the coming years in order to participate in the tagging program ... and achieve a robust stock assessment. The aim is to collect sufficient data to provide an advice on a ...
Meeting Document : WG-SAM-15/15 : Author(s): Delegation of France
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2004 winter and 2004/05 breeding season
numbers in the previous winterit was encouraging to see no observations of entanglements in plastic ... Abstract: The number of entanglements in the fifteenth consecutive winter surveyed, decreased by ... 64% from last year. For the first time since records started in 1990, none of the injuries were ... classified as severe. The seventeenth consecutive summer (2004/05) of reporting also saw a decrease of 64 ...
Meeting Document : SC-CAMLR-XXIV/BG/16 : Author(s): Delegation of the United Kingdom
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An examination of latitudinal variation in the growth rates of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea
in the length-at-age data. There is no statistically significant difference in mean growth rates of D ... (76° S) fell consistently below the von Bertalanffy curves calculated predominantly from data ... (62.5°–78.0° S). Between-zone comparisons were confounded by marked differences in the age structure of ... catches from the northern and southern sections of the range, and by the relatively high level of variance ...
Meeting Document : WG-FSA-03/30 : Author(s): P.L. Horn (New Zealand)
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An outline of the proposed dedicated krill survey for CCAMLR Division 58.4.1 during 2018/19 season by the Japanese survey vessel, Kaiyo-maru
Japan. No krill biomass has been estimated in the Division since 1996 when Australia carried out BROKE ... . There are two main objectives of our survey: (1) estimation of krill biomass to update B(0) in the area ... and (2) oceanographic observations in the area to detect long term changes if any. Japanese research ... vessel, Kaiyo-maru, will be used in the survey. The krill survey (echosounder and RMT) and subsequent ...
Meeting Document : SG-ASAM-17/01 : Author(s): H. Murase, K. Abe, T. Ichii and A. Kawabata
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2003 winter and 2003/04 breeding season
summer (27%), they caused the majority of winter entanglements (71%). For the second year running no ... Abstract: In the fourteenth consecutive winter of the survey at Bird Island, South Georgia, the ... number of entanglements increased by 56% compared to last year and the majority of injuries were ... classified as severe (71%). In contrast the sixteenth consecutive summer of reporting saw a decrease of 45 ...
Meeting Document : SC-CAMLR-XXIII/BG/14 : Author(s): Delegation of the United Kingdom