Résultats de la recherche
-
Quantifying vessel performance in the CCAMLR tagging program: spatially and temporally controlled measures of relative mortality and tag-detection rates
can derive meaningful indices of relative performance of groups of fishing effort (e.g. vessel, trip ... , etc). We developed indices of (i) the mortality (or loss of all tags) of released fish and (ii) the ... CCAMLR of a number of toothfish fisheries in Antarctica, but the evaluation of tagging performance has ... been thus far inconclusive because the confounding effect of factors such as time and location of ...
Meeting Document : WG-FSA-12/47 Rev. 1 : Auteur(s): S. Mormede and A. Dunn (New Zealand)
-
Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf
Paper Title: Distribution and relative abundance of Antarctic toothfish (Dissostichus mawsoni) on ... the Ross Sea shelf Abstract / Description: This paper summarises knowledge of the distribution and ... relative abundance of Antarctic toothfish (Dissostichus mawsoni) on the Ross Sea shelf (defined here as the ... continental shelf out to the edge of the shelf break at about 600–800 m depth). The focus is on D. mawsoni ... the area of deep water immediately to the north and east of Ross Island and adjacent to the Ross Ice ... word ‘season’ refers to the period from December to May, the months of fish- ing in the middle of the ... DISTRIBUTION AND RELATIVE ABUNDANCE OF ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) ON THE ROSS SEA SHELF S.M ... . Hanchet National Institute of Water and Atmospheric Research (NIWA) Ltd PO Box 893 Nelson, New ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 33–51 : Auteur(s): Hanchet, S.M., S. Mormede and A. Dunn
-
Birds: Trophic modelling of the Ross Sea
. Bradford-Grieve and S.M. Hanchet. 2010. A balanced model of the food web of the Ross Sea, Antarctica ... foraging trip of emperor penguins lasts several days and even weeks but diet values are only from the last ... 2–3 days of trip and may not be representative of the whole trip (Cherel & Kooyman 1998). Diets for ... (data includes East Crozier) (Taylor et al 1990) compared to 118 000 pairs in 1991, a decrease of 33 ... provisioning by adults (68%); (3) growth of juveniles after fledging (29%). Mortality loss in terms of ...
Document : Site Section: Publications
-
Infectious diseases of Antarctic penguins: current status and future threats
alterations due to climate change: the Western Antarctic Peninsula, the Ross Sea, and coastal regions of East ... Sea, and coastal regions of East Antarctica. We propose possible steps towards the goal of ... System, means that our understanding is still patchy. A feather loss condition of unknown etiology ... Antarctica. From previous reports we know that penguin species are highly susceptible to a number of ...
Meeting Document : WG-EMM-14/53 : Auteur(s): W.W. Grimaldi, P.J. Seddon, P.O.B. Lyver, S. Nakagawa and D.M. Tompkins (New Zealand)
-
Tooth growth in male Antarctic fur seals (Arctocephalus gazella) from South Georgia: an indicator of long-term growth history
died of natural causes at Bird Island. South Georgia, was quantified from measurements of annual layers ... provided an indication of body growth, Tooth growth rate was lowest in seals which died early (age 4 years ... Abstract: Growth of upper canine teeth of male Antarctic fur seals (Arctocephalus gazella) which ... in longitudinal sections of teeth. Mean age at death was 7∙69 ± 0∙07 years and this showed a small ...
Meeting Document : WG-CEMP-93/11 : Auteur(s): I.L. Boyd and J.P. Roberts (United Kingdom)
-
Interaction of marine mammals with the longline fishery around the Kerguelen Islands (Division 58.5.1) during the 1995/96 cruise
). These seals are responsible for the loss of 0.75 % of toothfish during the longline sets in which ... Paper Title: Interaction of marine mammals with the longline fishery around the Kerguelen Islands ... longliners fishing for Patagonian toothfish (Dissostichus eleginoides) to the west of the Kerguelen Islands ... interaction occurred, as against 2.2 % of fish lost from the hooks during line hauling. File ... occurred with the Antarctic fur seal (Auctocephalus gazella). These seals are responsible for the loss of ... INTERACTION OF MARINE MAMMALS WITH THE LONGLINE FISHERY AROUND THE KERGUELEN ISLANDS (DIVISION 58.5.1 ... (Dissosfichus eleginoides) to the west of the Kerguelen Islands during the 1995/96 cruise and marine mammals ... 0.75 % of toothfish during the longline sets in which interaction occurred, as against 2.2 % of fish ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 171–174 : Auteur(s): Capdeville, D
-
Marine mammals and demersal longline fishery interactions in Crozet and Kerguelen Exclusive Economic Zones: an assessment of depredation levels
Exclusive Economic Zones: an assessment of depredation levels Abstract / Description: Interactions between ... whales. These two species, alone or in co-occurrence with each other, were observed in 71% of the 1 308 ... two species, alone or in co-occurrence with each other, were observed in 54% of the 6 262 longlines ... monitored. Interactions were observed in all fishing areas. The effect of depredation was assessed by ... sheries along the west coast of the USA and Canada and the east coast of the Russian Federation. Report ... , C.A. and R.S. Henderson. 1972. Report of Project Deep Ops: Deep object recovery with pilot and ... 11 to 19) (Figures 1a and 1b). In this paper, depredation is defi ned as the loss of longline ... presence of killer whales and sperm whales resulted in a mean loss of fi sh of 22 ± 21%, 12 ± 27% and 42 ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 67–82 : Auteur(s): Roche, C., C. Guinet, N. Gasco and G. Duhamel
-
The foraging range of Adélie penguins – implications for CEMP and interactions with the krill fishery
Paper Title: The foraging range of Adélie penguins – implications for CEMP and interactions with ... the krill fishery Abstract / Description: This paper presents a summary of the foraging locations of ... coast of eastern Antarctica between 55 o E (Enderby Land) and 175 o E (Ross Sea). Adélie penguins ... , Euphausia superba. Locations of penguins on foraging trips were compared with historical records of fine ... 30 km) between 1972 and 1994. They are taken as indicating the consistent presence of harvestable ... Monolith, to the east of Mawson, birds tended to move in a northeasterly direction, but once out near the ... either side of Edmonson Point extends north-south and the Adelie penguins there must forage to the east ... of the colony. This contrasts with all other sites where the coast runs east-west. The continental ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 75–87 : Auteur(s): Kerry, K.R., J.R. Clarke, S. Eberhard, H. Gardner, R.M. Lawless, S. Corsolini, S. Focardi, E. Franchi, D. Rodary and R. Thomson
-
Movement and growth of tagged Dissostichus eleginoides around South Georgia and Shag Rocks (Subarea 48.3)
Paper Title: Movement and growth of tagged Dissostichus eleginoides around South Georgia and Shag ... (Dissostichus eleginoides) tagging program to investigate the spatial and temporal movement of fish and to ... date of injection and release. To date, 51 fish have been recaptured, mostly around Shag Rocks where ... there is greatest fishing activity. Most of the fish recaptured to date were tagged and released during ... tagged and released by observers around the northwest, north and east of Shag Rocks as well as west ... , north and east of South Georgia (Table 1). On board the same vessel, a further 44 toothfi sh were ... tagged in January 2001 east of Shag Rocks where most fi sh were deemed too small for processing and ... one vessel recaptured four line-caught fi sh tagged during the same observer trip. Three of these ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 101–111 : Auteur(s): Marlow, T.R., D.J. Agnew, M.G. Purves and I. Everson
-
Reproductive performance of seabirds and seals at South Georgia and Signy Island, South Orkney Islands, 1976-1987: implications for Southern Ocean monitoring studies
some or all of breeding population size, breeding success, foraging trip duration and offspring growth ... Paper Title: Reproductive performance of seabirds and seals at South Georgia and Signy Island ... / Description: Aspects of the reproductive performance over the last decade of black-browed, grey-headed and ... reviewed. Breeding success of the wandering albatross, which breeds in winter and eats fish and squid, has ... success, foraging trip duration and offspring growth rate. 1977-78 and 1983-84 were summers of ... ) REPRODUCTIVE PERFORMANCE OF SEABIRDS AND SEALS AT SOUTH GEORGIA AND SIGNY ISLAND, SOUTH ORKNEY ISLANDS, 1976 ... and P. Rotheryl (United Kingdom) Abstract Aspects of the reproductive performance over the last ... decade of Black-browed, Grey-headed and Wandering Albatrosses, Gentoo and Macaroni Penguins and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 445-447 : Auteur(s): Croxall, J.P., T.S. McCann, P.A. Prince and P. Rothery