Résultats de la recherche
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Solutions to seabird by-catch in Alaska’s demersal longline fisheries
and 2000) in 2 major Alaska demersal longline fisheries: the Gulf of Alaska /Aleutian Island ... for improvement and innovation. A key feature of this program was an industry-agency-academic ... conditions. We report the results of experimentally rigorous tests of seabird bycatch deterrents on the local ... abundance, attack rate, and hooking rate of seabirds in both fisheries. Based on our results, we recommend a ...
Meeting Document : WG-FSA-01/35 : Auteur(s): E.F. Melvin, J.K. Parrish, K.S. Dietrich and O.S. Hamel (USA)
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Krill population dynamics at South Georgia 1991–1997, based on data from predators and nets
Abstract: Central to understanding krill population dynamics is knowledge of their population ... structure. To examine this we used length-frequency distributions from 142 weeks of sampling (n= 23996 krill ... ) of 3 predator species breeding at South Georgia and 12 weeks of sampling (n = 10 252 krill) from ... scientific nets from the same area over the summers of 1991-1997. In comparing the 5 years with both predator ...
Meeting Document : WS-AREA 48-98/15 : Auteur(s): K. Reid, J. Watkins, J. Croxall and E. Murphy (UK)
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Beach litter survey Signy Island, South Orkney Islands, 1993/94
clues regarding their origin noted. At Foca Cove, a total of 118 items were recovered with a combined ... weight of 18.35 kg. At Cummings Cove, a total of 170 items were recovered (6.21 kg) and at Starfish Cove ... , a total of 6 items were found (0.30 kg). It is clear that almost all debris found originates from ... accidental or deliberate dumping of rubbish from ships or discarded gear from fishing vessels, rather than ...
Meeting Document : CCAMLR-XIII/BG/11 : Auteur(s): Delegation of United Kingdom
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Factors influencing Antarctic krill distribution in the South Shetlands
Abstract: The influences of biological and physical factors in the environment upon krill ... (Euphausia superba) distribution were studies in the area north of South Shetland Islands during 1990/91 ... factors were considered to be responsible for this characteristic distribution of krill. Diatoms were the ... main food of krill, and a spatial correlation between distributions of krill and diatoms were observed ...
Meeting Document : WG-KRILL-93/38 : Auteur(s): T. Ichii, H. Ishii and M. Naganobu (Japan)
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Marine ecosystem acoustics (MEA): quantifying processes in the sea at the spatio-temporal scales on which they occur
monitoring. Realistic understanding of what can and cannot be achieved with the available sampling techniques ... -space scales at which they occur, which is essential for some of the management challenges of CCAMLR ... , for example the FBM. Sustainable management of fisheries resources requires quantitative knowledge ... and understanding of species distribution, abundance, and productivity-determining processes ...
Meeting Document : WG-EMM-15/P01 : Auteur(s): O.R. Godø, N.O. Handegard, H.I. Browman, G.J. Macaulay, S. Kaartvedt, J. Giske, E. Ona, G. Huse and E. Johnsen
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UAV for monitoring environmental changes on King George Island (South Shetland Islands) Antarctica: preliminary study on wildlife disturbance
Abstract: The importance of Unmanned Aerial Vehicles (UAVs) in remote sensing is rapidly growing ... investigate potential effects of wildlife disturbance by UAVs. In austral summer 2014-2015 UAV overflights ... were conducted, in the Adelié penguin (Pygoscelis adeliae) colony at Pt. Thomas (Western Shore of ... Admiralty Bay, King George Island, Antarctic, subarea 48.1). The impact of electric and combustion engine ...
Meeting Document : WG-EMM-15/50 : Auteur(s): A. Kidawa, M. Korczak-Abshire, A. Zmarz, R. Storvold, M. Rodzewicz, K. Chwedorzewska, S-R. Karlsen and A. Znój (Poland)
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Marine debris and entanglements at Bird Island and King Edward Point, South Georgia, Signy Island, South Orkneys and Goudier Island, Antarctic Peninsula 2015–2016
to March 2016. Surveys of beached marine debris at Bird Island recorded a total of 56 and 123 items ... during winter (April to September 2015) and summer (October 2015 to March 2016) respectively. One item of ... beached debris (a piece of lumber) was recorded at Signy Island (operational during summer only; 16 ... November 2015 to 1 April 2016). 12 items of beached marine debris were recorded at Goudier Island ...
Meeting Document : SC-CAMLR-XXXV/BG/21 : Auteur(s): Delegation of the United Kingdom
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The Scientific Committee on Antarctic Research (SCAR) Annual Report 2015/2016
Abstract: SCAR is an interdisciplinary body of the International Council for Science (ICSU), and ... , and to promote scientific knowledge, understanding and education on any aspect of the Antarctic region ... information to the Antarctic Treaty System and other bodies and facilitates the international exchange of ... Antarctic information within the scientific community. SCAR and CCAMLR have a history of cooperation, and ...
Meeting Document : SC-CAMLR-XXXV/BG/26 : Auteur(s): Submitted by SCAR
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What’s the catch? Profiling the risks and costs associated with marine protected areas and displaced fishing in the Scotia Sea
of fishing effort from closed areas, which may result in new and unexpected consequences for both ... actively being discussed for achieving a range of protection and sustainable use objectives. Here, we ... evaluated two MPA scenarios and associated displacements of the Antarctic krill fishery in the Scotia Sea by ... quantifying their potential to affect risks of depleting krill-dependent predators and costs to the fishery ...
Meeting Document : WS-SM-18/P03 : Auteur(s): E.S. Klein and G.M. Watters
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Using ecosystem monitoring data to detect impacts
impacted by activities such as fishing. This paper discusses a range of methods for inferring such impacts ... purpose of ecosystem monitoring programs is to indicate the state of ecosystems and whether they have been ... using monitoring data with no control sites. These methods assess either (i) the expected probability of ... an observed value in an unimpacted system, or (ii) the frequency of values below a fixed reference ... paper discusses a range of methods for inferring such impacts using monitoring data with no control ... population health which is a legitimate focus for conservation objectives. This paper discusses ways of ... detect an impact. This paper introduces inference approaches and evaluates the probability of Type I ... paper presents several methods for infer- ring an impact using time series of observations without ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 197–212 : Auteur(s): Hill, S.L., J. Forcada, P.N. Trathan and C.M. Waluda