Search results
-
Climate change and precautionary spatial protection: seasonal sea ice
Abstract: Regional climate change is now known to be well established in the Antarctic; however ... , the implications for biological systems remain poorly understood. Investigating how marine species ... little changed by human activities, particularly by the impacts (either direct or indirect) of marine ... harvesting. If CCAMLR is to embrace the wider implications of climate change in the context of ecosystem ...
Meeting Document : WS-MPA-11/18 : Author(s): P.N. Trathan and S.M. Grant (UK)
-
Using compact video camera technology for rapid deep-sea benthic habitat assessment
Abstract: A compact, autonomous deep sea video system designed and constructed by the Australian ... Antarctic Division (AAD) for deployment on commercial fishing gear to observe interactions with the Southern ... Ocean benthos, has a wider application in deep-sea marine research. The use of the system as a drop ... voyage on the shelf-break of East Antarctica, greatly improved the efficiency of selection of sites for ...
Meeting Document : WG-EMM-10/24 : Author(s): G.P. Ewing, R. Kilpatrick, A.J. Constable and D.C. Welsford (Australia)
-
Application of aerial photography for ecological survey and habitat management of Adélie penguins
Abstract: There are some limits to the accurate counting of the total number of nests by ground ... survey at large scale breeding sites of penguins. To compensate for these shortcomings of the classical ... method, we tested the effectiveness of aerial photography for penguin monitoring at Cape Hallett. Images ... taken with a drone had a higher resolution than those taken by helicopter, and in the drone images ...
Meeting Document : WG-EMM-18/38 : Author(s): J.-H. Kim, H.-C. Kim, J.-I. Kim, C.-U. Hyun, J.-W. Jung, Y.-S. Kim, H. Chung and H.C. Shin
-
Hydroacoustic data obtained around Elephant Island and South Orkney Islands during austral summer 2018
Abstract: This document presents the analysis of acoustic data obtained during the austral summer ... of 2018 as a complement to finfish research in Subareas 48.1 and 48.2 using bottom trawling nets. The ... frequency of 38 kHz and a SIMRAD ES70 fishing echosounder equipped with a 120 kHz frequency transducer. The ... geographical distribution of krill concentrations and the presence of fish shoals are described in an area of ...
Meeting Document : WG-FSA-18/05 : Author(s): N.A. Alegría and P.M. Arana
-
Revisiting krill ageing method using eyestalk cuticles
Abstract: The development of a consistent and reproducible ageing method for krill is critical ... for improving the precautionary management of krill fisheries. The only method to date that has shown ... promise in the determination of the absolute age of krill is that of Kilada et al. (2017), which involves ... thin sectioning of the eyestalk cuticle. The mechanisms controlling the generation and retention of ...
Meeting Document : WG-EMM-2019/45 : Author(s): S. Kawaguchi, T. Barnes, N. Waller, B. Farmer, D. Hayes, R. Kilada, C. Reiss, G. Zhu, B. Krafft, A.-L. Agnalt, T. Ichii and T. Matsuda
-
Technical Specifications of Fish Heaven: version 2.1.5
Abstract: These are the technical specifications of the software Fish Heaven: version 2.1.5. The ... specifications include a description of the object structure of the model, the process structure of the model and ... a mathematical description of the model. Author(s): Ball, I. Title: Technical Specifications of ...
Meeting Document : WG-FSA-SAM-04/15 : Author(s): Ball, I.
-
Revised reports on abundance and biological information on toothfish in Divisions 58.4.4 a and 58.4.4b by Shinsei maru No. 3 in 2011/12
Abstract: A survey was conducted in order to collect information for the stock status and various ... 28.3 tonnes in the survey area in 70 longline sets. Mean CPUEs of D. eleginoides was 48.3 kg / km (CV ... = 79.1%) in terms of weight. The mean CPUE in terms of weight in SSRU B (32.1 kg / km) was rather lower ... than that (50.5 kg / km) in the same SSRU in 2010/11. A total of 172 individuals of toothfish with good ...
Meeting Document : WG-FSA-12/57 : Author(s): K. Taki, T. Iwami, M. Kiyota and T. Ichii (Japan)
-
Broadbandwidth total target strength measurements of Antarctic krill (Euphausia superba) from reverberation in a cavity
= 31.6 mm; standard deviation = 6.6 mm), at the Cape Shirreff field station, Livingston Island ... of seawater (0.6??temperature??3.6 °C). Between each pulse, the krill moved within the fixed-boundary ... -tank and the modulated reverberations were sensed bi-statically with three omnidirectional receivers ... . At each center frequency (fc), the coherent energy in 200-pulse ensembles identified sound scattered ...
Meeting Document : WG-EMM-02/49 : Author(s): D.A. Demer and S. G. Conti (USA)
-
Characteristics of krill aggregations in 48.4 subdivision during January–February 2000
type in relation to water mass structure and dynamics. The distributional features and physical ... characteristics of some 2400 krill swarms detected and sized acoustically in the study area have been described ... been made an analysis of krill biomass horizontal and vertical distributions in the study area in ... relation to characteristics of the aggregations recorded. The effect of spatial distribution of krill ...
Meeting Document : WG-EMM-01/42 : Author(s): S.M. Kasatkina, A.P. Malyshko, V.N.Shnar and O.A. Berezhinskiy (Russia)
-
A simulation study of krill fishing by an individual Japanese trawler (SC-CAMLR-VI/BG/37)
Abstract: A model is set up for the operation (which includes both searching and fishing) of a ... whose parameters are determined primarily from the scientific FIBEX surveys. Output from the model of ... the operation is compared with (and partially tuned to) statistics for a sample of data from the ... than in the model. Two ad hoc model modifications are introduced to eliminate this inconsistency ...
Meeting Document : WS-KCPUE-89/04 : Author(s): D.S. Butterworth (South Africa)