Search results
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REVIEW OF CCAMLR ACTIVITIES ON MONITORING MARINE DEBRIS IN THE CONVENTION AREA
Abstract: CCAMLR Members monitor beached debris, entanglement of marine mammals, marine debris ... associated with seabird colonies and animals contaminated with hydrocarbons at a number of sites, primarily ... in Area 48. Overall non-fishing debris items (mostly packaging items) have made up the majority of ... debris reported from monitoring sites. Relatively large amounts of fishing items have been reported at ...
Meeting Document : WG-IMAF-09/08 : Author(s): Secretariat
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Fish and squid in the diet of king penguin chicks, Aptenodytes patagonicus, during winter at sub-Antarctic Crozet Islands
Abstract: The diet of king penguins, Aptenodytes patagonicus, rearing chicks was studied during ... of the 47 samples was 503 g. Percentages of wet and reconstituted masses showed that both fishes (66 ... and 36%, respectively) and squid (34 and 64%) are important components of the winter diet. Juveniles ... of the demersal onychoteuthid squid M oroteuthis ingens form the bulk of the cephalopod diet, and ...
Meeting Document : WG-EMM-97/09 : Author(s): Cherel, Y., Ridoux, V., Rodhouse, P.G.
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The fish diet of black-browed albatross Diomedea melanophrys and grey-headed albatross D. chrysostoma at South Georgia
Abstract: The fish component of the diet of black-browed and grey-headed albatrosses at South ... 1986 and 1994. Fish represented 30% and 72% by mass of the diet of black-browed albatrosses and 14% and ... 60% by mass of the diet of grey-headed albatrosses in 1986 and 1994 respectively. We determined the ... identity and quantified the contribution (by numbers, size and mass) of fish species mainly by using ...
Meeting Document : WG-EMM-96/11 : Author(s): Reid, K., Prince, P.A., Croxall, J.P.
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Selectivity and two biomass measures in an age-based assessment of Antarctic krill (Euphausia superba)
Abstract: An integrated, age-structured model was fitted to different combinations of survey data ... using two forms of selectivity (logistic or double-logistic) with time-constant or annually varying ... selectivity to investigate the population dynamics of Antarctic krill (Euphausia superba) near the Antarctic ... the South Shetland Islands from 1992 to 2011. Two indices of krill biomass based on (1) trawl-net ...
Meeting Document : WG-EMM-15/P07 : Author(s): D. Kinzey, G.M. Watters and C.S. Reiss
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Classification of Southern Ocean krill and icefish echoes using Random Forests
Abstract: Target identification remains a challenge for acoustic surveys of marine fauna ... . Antarctic krill, Euphausia superba, are typically identified through a combination of expert scrutiny of ... echograms and analysis of differences in mean volume backscattering strengths (S V; dB re 1 m-1) measured at ... icefish are currently surveyed using bottom-trawls, but the resultant estimates of abundance may be biased ...
Meeting Document : WG-EMM-16/23 : Author(s): N. Fallon, S. Fielding and P. Fernandes
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A spatial multi-species operating model (SMOM) of krill–predator interactions in small-scale management units in the Scotia Sea
Abstract: A Spatial Multi-species Operating Model (SMOM) of the underlying krill-predator-fishery ... dynamics is developed in response to requests for scientific advice regarding the subdivision of the ... the potential impact of fishing on land-based predators. The model is intended to complement the ... of krill in each of the SSMUs, as well as the numbers of predator species in each of these areas. The ...
Meeting Document : WG-EMM-06/12 : Author(s): É. Plagányi and D. Butterworth (South Africa)
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A method for inferring movement rates of fish from mark–recapture data
Abstract: This paper presents methods to infer the rate of movement of fish that are marked ... , released, and subsequently captured. The information that is available is the location and date of the ... release and the recapture. In addition, the intensity of fishing effort (i.e. sampling) by location and ... time is known. The simplest approach is to make a frequency plot of the distance between each release ...
Meeting Document : WG-FSA-05/66 : Author(s): C. Wilcox (Australia)
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Peculiarities of icefish Champsocephalus gunnari (Channichthyidae) distribution in South Georgia area during the surveys made by STM Atlantida in 2000 and 2002
Abstract: Reasons of differences in icefish distribution and biomass assessment during two ... surveys made by STM “Atlantida” are revealed. Availability of large icefish concentrations in 2000 in the ... northwest shelf area in 10-100m layer resulted in formation of adult fish aggregations in water column. The ... the bottom even in dark hours of the day. During the two surveys, fry and immature fish occurred in ...
Meeting Document : WG-FSA-03/55 : Author(s): Zh.A. Frolkina, S.M. Kasatkina and N.N. Zhigalova (Russia)
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Population dynamics of wandering albatrosses Diomedea exulans at sub-Antarctic Marion Island: longline fishing and environmental influences
Abstract: The Prince Edward Islands support the largest breeding population of the vulnerable ... Wandering Albatross Diomedea exulans. The number of birds breeding in this population has fluctuated over ... the past three decades and appears to be the result of both real changes in the size of the population ... and changes in the proportion of the population that attempts to breed in a given year. We describe ...
Meeting Document : WG-FSA-02/16 : Author(s): D.C. Nel, P.G. Ryan and J. Cooper (South Africa)
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Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Signy Island, South Orkney Islands 1996/97
Abstract: The results of the first annual survey of entanglement of Antarctic fur seals at Signy ... Island, South Orkney Islands are reported for the 1996/97 season. Neck collars of man-made debris were ... seen on 12 seals, all of which were juvenile males. Five entangled seals were observed in an area ... around Signy Island Research Station where approximately 1.3% of the fur seal population come ashore. It ...
Meeting Document : SC-CAMLR-XVI/BG/07 : Author(s): Delegation of the United Kingdom