Résultats de la recherche
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BEACH DEBRIS SURVEY SIGNY ISLAND, SOUTH ORKNEY ISLANDS 1996/97
Abstract: The seventh annual beach debris survey was carried out at Signy Island, South Orkney ... Islands during the 1996/97 austral summer. Debris was cleared each month between December and March from ... three study beaches, Cummings Cove, Foca Cove and Starfish Cove. The debris was counted, measured and ... were found at Starfish Cove. The total amount of marine debris collected from the three beaches was the ...
Meeting Document : CCAMLR-XVI/BG/6 : Auteur(s): Delegation of the United Kingdom
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Antarctic krill and climate change
on the impact of climate change and increasing fisheries on Antarctic krill and Antarctic ecosystems ... , and possible repercussions for resource management. The workshop was organised by the Institute of ... Marine Resources and Ecosystem Studies (IMARES) in the Netherlands, and funded by the European Commission ... and the Dutch government. The scientific evaluation focused on major agents of climate change, such as ...
Meeting Document : SC-CAMLR-XXX/BG/03 : Auteur(s): Delegation of the European Union
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Uncertainty in standard sphere calibrations
Abstract: In fisheries acoustics, the standard sphere method of echosounder calibration is most ... commonly used (Johannesson and Mitson, 1983; Simmonds et al., 1984). To investigate the uncertainty in the ... variations in the system gains of 0.3, 0.2 and 1.5 dB, respectively. Additionally, system gain values ... calibrated with the 30.5 mm Cu sphere were consistently lower than those with the 33.2 mm WC sphere. Prompted ...
Meeting Document : WG-EMM-95/70 : Auteur(s): Demer, D.A., Hewitt, R.P.
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Importance of myctophid fish distributions for formation of foraging areas of chinstrap penguins and Antarctic fur seals at Seal Island
to the incubation and guard period, respectively, for chinstrap penguins; penguins were divided into ... occurred on the shelf north of Seal Island. However, all predators except diurnal foraging penguins went ... northward beyond the shelf, and foraged in offshore region during Leg I and on slope during Leg II. The ... diurnal foraging penguins alone fed on the shelf. The following advantages are considered for feeding in ...
Meeting Document : WG-EMM-95/87 : Auteur(s): Bengtson, J.L., Kawaguchi, S., Jansen, J.K., Takao, T., Meyer, W.R., Baba, N., Hiruki, L.M., Boveng, P., Cameron, M.F., Ogishima, T., Ichii, T., Naganobu, M.
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Results of reading tests of TOP otolith sections and time schedule of reading for Dissostichus otoliths caught in regions of data-poor fisheries
Abstract: The correct age-length keys are essential for the stock assessment of Dissostichus spp ... . by CASAL model. However, the age estimations using the otoliths have been scarcely progressed in ... regions of data-poor fisheries. Therefore the analysis is an urgent task. We have made five reading tests ... using images of thin-sectioned TOP otoliths in December 2012 and May 2013. The coefficient of variation ...
Meeting Document : WG-SAM-13/19 : Auteur(s): K. Taki and T. Ichii (Japan)
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Scotia Sea Pygoscelid Penguin Tracking and Habitat Analysis Workshop
predators and the krill fishery was desirable throughout the Scotia Sea; it was recognised that such work ... environmental variables. Consequently, in May 2015, an expert meeting was convened to consider the utility of ... using tracking data to build habitat use and preference models for krill-eating penguins. The meeting ... considered that such models would be of critical value in the development of feedback management approaches ...
Meeting Document : WG-EMM-15/09 : Auteur(s): P.N. Trathan (United Kingdom), J.T. Hinke (USA) and B. Lascelles (BirdLife International)
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Target strengths of krill at 136 and 20 kHz
lengths in the range (45,50) mm the mean single-krill target strengths are in the range (-68,-69) dB at ... 136 kHz. For aggregations with mean lengths in the range (43,47)mm the mean single-krill target ... strengths are in the range (-71,-77) dB at 20 kHz. Trawling-acoustic method. For aggregations with mean ... lengths in the range (47,50) mm the mean target strengths in the range (-71,-75) dB at 20 kHz were ...
Meeting Document : WG-KRILL-91/29 : Auteur(s): S.M. Kasatkina (USSR)
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Variation in foraging effort by lactating Antarctic fur seals: response to simulated increased foraging costs
Abstract: Seasonally breeding predators, which are limited in the. time available for ... provisioning young at a central location, and by the fasting abilities of the young, are likely to maximize ... energy delivery to the young by maximizing the rate of energy delivery averaged over the whole period of ... investment. Reduction in food availability or increased foraging costs will alter the optimal behavior of ...
Meeting Document : WG-EMM-97/08 : Auteur(s): Walker, T.R., McCafferty, D.J., Boyd, I.L.
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Proposition d'une édition spéciale de CCAMLR Science
Abstract: CCAMLR Science provides a valuable mechanism for promoting the science undertaken in ... connection with CCAMLR and for raising CCAMLR’s profile within the international scientific community ... . However, in recent years there has been a decrease in the number of papers submitted to CCAMLR Science for ... their publication. Taking into account the review made by the CCAMLR Secretariat, the subsequent ...
Meeting Document : SC-CAMLR-XXXVI/16 : Auteur(s): Delegations of Argentina and Chile
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Best practice seabird by-catch mitigation for Spanish-rig longline vessels with emphasis on line weighting regimes
Abstract: The Spanish system is used in a range of demersal and semi-pelagic longline fisheries ... throughout the southern hemisphere and has been the source of a large number of seabird fatalities. An ... experiment was conducted on a chartered Spanish-rig vessel to improve the sink rate of longlines to reduce ... interactions with seabirds. The benchmark sink rate was that of integrated weight (IW) longlines, as used by ...
Meeting Document : WG-FSA-06/22 : Auteur(s): G. Robertson (Australia), C.A. Moreno (Chile), B. Wienecke (Australia), P. Gandini (Argentina), G. McPherson (Australia) and J.-P. Seco Pon (Argentina)