Search results
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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 ... . Conventional sampling by physical capture is inconsistent with the spatial and temporal scales on which many of ... technology with advanced operational capabilities and tailored modelling integrated into a flexible tool for ...
Meeting Document : WG-EMM-15/P01 : Author(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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Pilot study on electrophoretic variation and stock structure in the mackerel icefish, Champsocephalus gunnari, South Georgia waters
commercially-exploited mackerel icefish, Champsocephalus gunnari, together with a preliminary assessment of ... revealed average levels of genetic variability, with the proportion of polymorphic loci, P = 0.278, mean ... requires analysis of larger sample sizes with more comprehensive electrophoretic screening. Genetic data ...
Meeting Document : WG-FSA-90/10 : Author(s): G.R. Carvalho and D.P. Lloyd-Evans (United Kingdom)
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A distribution-free model of length-frequency distribution to inform fishery stratification for integrated assessments
(GAMM) with cubic smoothing splines fitted to P for each combination of the covariates (i.e. gear type ... . Additional error terms included a random spatial block term and interactions of spatial blocks with other ... covariates. Graphical presentation of fitted splines along with standard error of difference bounds were used ...
Meeting Document : WG-SAM-13/18 : Author(s): S. Candy, P. Ziegler and D. Welsford (Australia)
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Mitigation of Macrourus by-catch in research block 58.4.1_6 and estimation of Macrourus biomass and sustainable catch in Divisions 58.4.1 and 58.4.2
with high Macrourus spp. by-catch rates in depths between 750 m and 1150 m. To mitigate Macrourus spp ... vessels to fish within the research grid with structured fishing. The latter option is similar to research ... effort is distributed across a range of depth strata (<1000, 1001–1500, 1501–2000 m) with at least 5 ...
Meeting Document : WG-FSA-17/23 : Author(s): D. Maschette, P. Burch, P. Yates and P. Ziegler
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Model-based mapping of assemblages for ecology and conservation management: A case study of demersal fish on the Kerguelen Plateau
simultaneously groups sites with a similar composition of species and describes the patterns of variation in ... assemblages contain more cosmopolitan species. With the exception of one deep-water assemblage, assemblages ... valuable tool for classifying biological regions with a range of ecological and conservation management ...
Meeting Document : WS-SM-18/P02 : Author(s): N.A. Hill, S.D. Foster, G. Duhamel, D. Welsford, P. Koubbi and C.R. Johnson
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Supervised and unsupervised (RapidKrill) estimates of krill density from DY098
up with a similar estimate of krill NASC and krill density as the supervised method. An ... produces a krill density of 8.60 gm-2, compared with 21.76 gm-2 (supervised) or 20.41 gm-2 (unsupervised ...
Meeting Document : SG-ASAM-2019/09 : Author(s): A. Ariza, S. Fielding and R. Blackwell
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Status of the FIBEX acoustic data from the west Atlantic
collected at 50kHz (Walther Herwig survey) with data collected at 120 kHz (all other vessels), it is ... Siedlecki survey do not provide estimates that are consistent with the other surveys. The authors can find ...
Meeting Document : WG-KRILL-93/31 : Author(s): P.N. Trathan and I. Everson (United Kingdom)
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A method for preparing large numbers of otolith sections for viewing by scanning electron microscope
(SEM). Compared with previous SEM techniques, which normally prepare otoliths individually for viewing ... , this allowed larger sample sizes to be examined. Compared with similar light microscope techniques ...
Meeting Document : WG-FSA-93/07 : Author(s): J.R. Ashford, K. Robinson and M.G. White (United Kingdom)
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Potential impacts of climate change on the Southern Ocean ecosystem
with severe and permanant collapse. Pivotal to this process is a diminution of the important (but ... before irreversible harm is done to the Antarctic environment and ecosystems, with their global ...
Meeting Document : CCAMLR-VIII/BG/21 : Author(s): R.G. Chittleborough (Australia)
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Characteristics of population-genetic structure of Antarctic toothfish (Dissostichus mawsoni) from near-continental seas of Pacific, Indian and Atlantic sectors of the Antarctica
show difference with publishes data for several genes and present new view onto toothfish population ... frequency with previously published data was also found for several loci. Author(s): N.S. Mugue, A.F ...
Meeting Document : WG-FSA-12/21 : Author(s): N.S. Mugue, A.F. Petrov, D.A. Zelenina, I.I. Gordeev and A.A. Sergeev (Russia)