Результаты поиска

1. Analysis of scientific observer data from the Saga Sea 2006–2007

   distribution of these trawls in time and space was not random. The vessel tended to fish with one trawl type ... Abstract:  UK observers were present during all fishing operations of the Norwegian flagged Saga ... Sea from June 2006 to June 2007. This paper presents an initial analysis of the krill and fish bycatch ... sampled. Although a reasonably large number of continuous and conventional trawls were undertaken, the ...

   Meeting Document : WG-EMM-07/16 : Автор(ы): P. Orr, J. Hooper, D. Agnew, J. Roe, G. Doherty and A. Pryor

2. Genetic analysis of Antarctic toothfish samples from the Southern Ocean to explore potential stock boundaries

   restriction enzyme digests of nine sub regions of the mitochondrial genome. Polymorphisms were found in four ... out of seven introns digested with the restriction enzymes, but there was no population ... differentiation among the three sea areas. While direct sequencing of cytochrome b (665 base pair) showed ... virtually no variation, sequences for ~600 bp of the left domain of the control region showed nucleotide ...

   Meeting Document : WG-FSA-04/32 : Автор(ы): P.J. Smith, S.M. McVeagh (New Zealand) and P.M. Gaffney (USA)

3. Draft MPA Report for the South Orkney Islands, Subarea 48.2; Part of CCAMLR MPA Planning Domain 1, Western Peninsula – South Scotia Arc

   Abstract:  In this paper we provide a brief history that describes the development of management ... plans and research and monitoring plans for CCAMLR MPAs. We develop a worked example of the management ... the information necessary for CCAMLR’s planning purposes, including the identification of other ... develop spatial protection measures is through the appropriate combination of scientific data and ...

   Meeting Document : WG-EMM-13/10 : Автор(ы): P. Trathan and S. Grant (United Kingdom)

4. Effects of sea-ice extent and krill or salp dominance on the Antarctic food web

   trophic levels in the Antarctic marine food web. The pelagic tunicate Salpa thompsoni can also be ... important during spring and summer through the formation of extensive and dense blooms. Although salps are ... chlorophyll-a that indicate that there is a degree of competition between krill and salps. Our analysis of the ... decreased frequency of winters with extensive sea-ice development over the last five decades. Our data ...

   Meeting Document : WG-EMM-97/73 : Автор(ы): Hewitt, R., Trivelpiece, S., Fraser, W., Holm-Hansen, O., Siegel, V., Trivelpiece, W., Loeb, V.

5. Modelling growth of Antarctic krill: a new approach to describing the growth trajectory

   Abstract:  Von Bertalanffy (VB) growth models for Antarctic krill have in the past been calibrated ... frequency samples. We develop an alternative approach to predicting the trajectory of length over time using ... from direct measurements of individual pre- and post-moult krill sampled from the wild with a model of ... from the Indian Ocean sector we model IGR as a function of pre-moult length and season using linear ...

   Meeting Document : WG-EMM-05/27 : Автор(ы): S. Candy and S. Kawaguchi (Australia)

6. Oceanography of the South Georgia and South Orkney Islands regions using high-resolution models

   ecosystems operate over small spatial scales of <10 km. Understanding the drivers of variability in such ... . Many of the key oceanographic and ecological processes determining the operation of these marine ... processes requires the development of high-resolution ocean models. Here we describe the development of ... the results of preliminary analyses. The models are regional applications of NEMO with a ~3 km ...

   Meeting Document : WG-EMM-17/30 : Автор(ы): E. Young, E. Murphy and P. Trathan

7. High-resolution ocean modelling of the South Georgia and South Orkney Islands regions

   South Orkney Islands is highly productive, with a history of commercial exploitation. Many of the key ... oceanographic and ecological processes that determine the structure and functioning of this ecosystem operate ... over small scales of <10 km. Historically, these fine spatial scales have been poorly represented in ... numerical models. Here we describe the development of two regional ocean models that will be used to examine ...

   Meeting Document : WG-EMM-16/15 : Автор(ы): E. Young, E. Murphy and P. Trathan

8. Preliminary assessment of the South Georgia ray populations

   implemented in a Bayesian framework. Catch and CPUE data were reconstructed for the time series 1985 – 2006 ... from a variety of sources, and included the consideration that since 2004 the practice of cutting rays ... off lines at the water surface should have increased survivorship of discarded rays, although this ... deeper than 800m, and we have assumed that the majority of catches were of the Amblyraja variant species ...

   Meeting Document : WG-SAM-07/11 : Автор(ы): D.J. Agnew, R. Mitchell, T. Carruthers, J. Roberts, R. Hillary and J. Pearce (United Kingdom)

9. Using production models to assess the stock of Paralomis spinosissima around South Georgia Island

   recruitment function. The best fitting model was Model 1. Model 1 had three parameters: an estimate of initial ... abundance (N0), an estimate of the scaling coefficient relating abundance to CPUE (q), and a recruitment ... removals should not be greater than the number of crabs that recruit to the fishery during the course of a ... information about the frequency and duration of the molting/mating event is required. To extrapolate the ...

   Meeting Document : WG-FSA-93/23 : Автор(ы): George Watters (USA)

10. GROUNDFISH SURVEY IN CCAMLR SUB-AREA 48.3 IN APRIL 2008 WITH PRELIMINARY ASSESSMENT OF MACKEREL ICEFISH

    Abstract:  In April 2008 the UK undertook a bottom trawl survey of CCAMLR Sub-Area 48.3 on the FV ... in the NW South Georgia area. A preliminary short-term projection of the mackerel icefish stock was ... the 1+ fish produced yield of 3445 tonnes in Year 1 (2008/09) and 2318 tonnes in Year 2 (2009/10). In ... sea-floor areas and adjusting this for the low headline height of the UK trawl (see CCAMLR WG-FSA ...

    Meeting Document : WG-FSA-08/28 : Автор(ы): M.A. Collins, R.E. Mitchell, C.E. Main, J. Lawson, J. Watts, J. Slakowski, L. Featherstone and O. Rzewuski (UK)

Страницы