Résultats de la recherche
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CCAMLR ecosystem monitoring and a feedback management procedure for krill
/ Description: The CCAMLR Ecosystem Monitoring Program has been developing a technique which might detect short ... attributable to loss of prey through fishing activities. The principal fishery in the CCAMLR Convention Area is ... the krill fishery and this paper examines ways in which the information being obtained from the ... (decline) in the predator parameters that is considered acceptable (i.e., for which no management action ... has been no systematic evaluation of the status of predators required to maintain ecological ... is the lack of knowledge on what may have happened to these predator populations had there been no ... no indication by the Commission of the required precision of such advice before it will be used to ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 345–350 : Auteur(s): Constable, A.J.
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Directed research. Antarctic Marine Living Resources (AMLR). A program development plan
plan Abstract / Description: The US Antarctic Marine Living Resources (AMLR) Program is a national ... program providing information needed for US policy regarding the conservation and management of the marine ... living resources in the ocean areas surrounding Antarctica. The program is in support of US participation ... in the Commission and Scientific Committee of the Convention for the Conservation of Antarctic Marine ... , NOAA, U.S. Department of Commerce (U.S.A.) Abstract The U.S. Antarctic Marine Living Resources ... (AMLR) Program is a national program providing information needed for U.S. policy regarding the ... conservation and management of the marine living resources in the ocean areas surrounding Antarctica. The ... program is in support of U.S. participation in the Commission and Scientific Committee of the Convention ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 363-373 : Auteur(s): Office of Science and Technology, NMFS, NOAA, US Department of Commerce (USA)
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Significant intra-annual variability in krill distribution and abundance at South Georgia revealed by multiple acoustic surveys during 2000/01
midseason survey revealed no significant difference in the mean krill density derived from only those four ... acoustic surveys of Antarctic krill (Euphausia superba) were conducted around South Georgia in the 2000/01 ... March 2001 (late-season). The surveys were the first in a newly planned five-year series of observations ... designed to complement and extend an existing time series regularly maintained by the British Antarctic ... ). Analysis of transect data obtained in the western box in the mid- season survey revealed no signifi cant ... along the island’s north coast (cf. Watkins et al., 1999; Brandon et al., 1999, 2000). No extra ship ... transducers. The echosounder was calibrated using standard targets at Stromness Bay, South Georgia, on 24 ... -season surveys were de- signed to take just 48 hours on site, capitalising on voyages to the island that ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 71–82 : Auteur(s): Brierley, A.S., C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst
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Selectivity parameters for Notothenia gibberifrons Lönnberg, 1905 and Champsocephalus gunnari Lönnberg, 1905 obtained during “8611 ANTARCTICA [ANTARTIDA]” expedition
/ Description: Mesh selectivity experiments for several finfish species were conducted during the Spanish ... Antarctic cruise “ANTARTIDA 8611” using the covered codend technique. This paper presents the results ... species were conducted during the Spanish antarctic cruise "ANTARTIDA 8611" using the covered codend ... technique. This paper presents the results obtained for Notothenia gibberifrons and Champsocephalus gunnari ... HcnaHCKoro aHTapKTHlIecKoro pefica "ANTARDIDA 8611" 6bIJIH npOH3Be,l{eHbl 3KcnepHMeHTbl no CeJIeKTHBHOCTH ... en vigor en el ana 1987 y que no habfa sido aun refrendada cientfficamente (CCAMLR, 1986b). Las ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 87-105 : Auteur(s): Balguerías, E.
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Additional data on anti-Brucella antibodies in Arctocephalus gazella from Cape Shirreff, Livingston Island, Antarctica
Shirreff, Livingston Island, Antarctica Abstract / Description: The first instance of anti-Brucella ... antibodies in the Southern Hemisphere was recorded in two pinniped species from Antarctica: Antarctic fur ... fluid) were tested using the Rose Bengal (RB) test, the Competitive Enzymoimmunoassay (c-ELISA) test and ... the Competitive Enzymoimmunoassay 'COMPELISAO®' test. Antibodies against Brucella spp. were ... Fieldwork was carried out at the Site of Special Scientific Interest (SSSI) No. 32 and CCAMLR Ecosystem ... carried out by the Instituto Anthrtico Chileno (TNACH). SSSI No. 32 and CEMP Site No. 2 contain one of ... Antarctica since the bacteria have not yet been isolated and no studies on this subject have been conducted ... Site No. 2, Antarctica, CCAMLR Anti-Brllcelln antibodies in A. gnzelln f r o m Cape Shirreff ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 147–154 : Auteur(s): Blank, O., P. Retamal, P. Abalos and D. Torres
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A risk-management framework for avoiding significant adverse impacts of bottom fishing gear on Vulnerable Marine Ecosystems
Ecosystems (VMEs) are avoided. Due to the high levels of uncertainty surrounding both the evidence of VME ... presence and the consequences of interaction with different types of gear, a risk-management framework is ... proposed, similar to that which has been used successfully to minimise the effects of longline fishing ... mortality on seabirds. Risk is broadly defined as the conditional probability of adverse impacts given ... Ecosystems (VMEs) was identified as a key issue by the United Nations in 2003 (UNGA, 2003). No standard ... MARINE ECOSYSTEMS K. Martin-Smith Australian Antarctic Division Department of the Environment, Water ... , Heritage and the Arts 203 Channel Highway, Kingston 7050 Tasmania, Australia Email – keith.martin-smith ... impacts of bottom fishing gear on Vulnerable Marine Ecosystems (VMEs) are avoided. Due to the high levels ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 177–193 : Auteur(s): Martin-Smith, K
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Can we satisfactorily estimate variation in krill abundance?
from data reported to the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR ... fishery induced variation. The timescale for such information is discussed in the light of the needs of ... reported to the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR) does not ... variation. The timescale for such information is discussed in the light of the needs of fishery management ... ) ha sido usada tradicionalmente en las evaluaciones de pesquerias demersales como un estimador de la ... Recursos Vivos Marinos Antarticos (CCAMLR) no provee un indice realista de la abundancia de krill ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 375-376 : Auteur(s): Everson, I.
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Depth distribution and spawning pattern of Dissostichus eleginoides at South Georgia
eleginoides) were examined using data from approximately 7000 fish sampled by observers from the 1998 fishery ... around South Georgia and Shag Rocks (Subarea 48.3). D. eleginoides were distributed down the shelf slope ... ) and not by geographical position. Pre-spawning animals appear to be distributed all around the South ... water, and are concentrated to the northeast of Shag Rocks. Few spent fish were found around South ... has been no suggestion of a massive concentration of effort in one small area. However, the fishery ... , except that no restriction was placed on the depth range of a longline set. To increase sample size ... stage 3 animals which are mostly around the 800 m depth in April. There is no evidence of female ... - spawning. Although almost no sampling was possible on the northwest South Georgia shelf edge (Figure 7b ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 19–36 : Auteur(s): Agnew, D.J., L. Heaps, C. Jones, A. Watson, K. Berkieta and J. Pearce
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An assessment of CCAMLR measures employed to mitigate seabird mortality in longlining operations for Dissostichus eleginoides around South Georgia
the effectiveness of measures employed by CCAMLR to mitigate seabird mortality. Following an agreement ... between the Governments of the United Kingdom and Chile, a UK observer was placed aboard a Chilean ... longliner, the BF Cisne Verde, fishing in CCAMLR Subarea 48.3 during the 1996/97 season. In this study 61 ... lines were laid from March to May 1997 using the Spanish double-line method. In accordance with CCAMLR ... intervals along the line, all deck lights were extinguished and no offal was discarded during setting. A ... requested otherwise. It broke once while in use, and was replaced for the following set. No offal was ... for each day's hauling. Periods were selected in one of two ways: haphazardly over the line when no ... -sample test was used instead. Under the conditions of night-time setting, no deck lights and a well ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 217–230 : Auteur(s): Ashford, J.R. and J.P. Croxall
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Fitting Euphausia superba into Southern Ocean food-web models: a review of data sources and their limitations
sources and their limitations Abstract / Description: This paper aims to provide the overview needed to ... include krill in food-web models and to guide modellers to key sources of data. It describes the strengths ... and live krill), acoustics (distribution, time series, biomass and swarm-scale information), the ... recommended. Observations that krill occupy the underice layer, the 0–10 m layer, the deeper water column and ... are the wet mass m–2 (i.e. bio- mass density) and no. m–2 (numerical density). The current paradigm ... of the estimation volume, due to the concentrations (no. m–3) here being orders of magnitude higher ... . The key point here is that the numbers of krill m–2 is a product of the no. m–3 and the habitat ... no better for net population growth than the lower-risk, lower-reward habitats offshore, albeit ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 219–245 : Auteur(s): A. Atkinson, S. Nicol, S. Kawaguchi, E. Pakhomov, L. Quetin, R. Ross, S. Hill, C. Reiss, V. Siegel, G. Tarling (submitted to the 2008 Joint CCAMLR-IWC Workshop)