Search results
-
At-sea distribution and prey selection of Antarctic petrels and commercial fisheries
like seabirds. In the Southern Ocean, there is an extensive fishery for Antarctic krill Euphausia ... operations versus predators is needed to predict fishery-related impacts on krill-dependent predators ... of the Antarctic krill fisheries and the distribution of a krill dependent seabird, the Antarctic petrel ... fishing areas, during three consecutive seasons. The overall spatial overlap between krill fisheries ...
Meeting Document : WG-EMM-16/P15 : Author(s): S. Descamps, A. Tarroux, Y. Cherel, K. Delord, O.R. Godø, A. Kato, B.A. Krafft, S.-H. Lorentsen, Y. Ropert-Coudert, G. Skaret and Ø. Varpe
-
MODELING PREDATION BY TRANSIENT LEOPARD SEALS FOR AN ECOSYSTEM-BASED MANAGEMENT OF SOUTHERN OCEAN FISHERIES
on Antarctic krill and icefish, which are targeted by regional fisheries. We used a state-space formulation ... % of the local gentoo penguin population (20% IE). Antarctic krill (28% IE) were the only observed food ... to ecosystem-based approaches to fisheries management, where harvesting must be sustainable for targeted ... energy, IE), but ca. 12–16% of the local gentoo penguin population (20% IE). Antarctic krill (28% IE ...
Meeting Document : WG-EMM-09/P08 : Author(s): J. Forcada, D. Malone, J.A. Royle and I.J. Staniland
-
Warp strike observations
by fisheries observers. The survey was carried out in the southern squid trawl fishery (SQU6T/1T) over ... observers. The survey was carried out in the southern squid trawl fishery (SQU6T/1T) over the summer of 2004 ... and to assess the factors (fishery, environmental, and behavioural, temporal) that appeared to influence ... -specialist observers, to provide a robust and objective assessment of warp strike occurrence. The key results ...
Meeting Document : WG-FSA-05/40 : Author(s): E. Abraham (New Zealand)
-
Estimation of natural mortality for the Patagonian toothfish at Heard and McDonald Islands using catch-at-age and aged mark-recapture data from the main trawl ground
toothfish (Dissostichus eleginoides) fishery have been unsuccessful. An alternative strategy was adopted ... at HIMI were used to estimate M. Catch and releases by age class for this fishery were obtained using ... proportions-at-length and fishery- and year-specific age–length keys (ALKs) for years 1998 to 2008. A large ... proportion of the recaptures of fish released in this fishery were aged and these were used to obtain ... are also due to the fisheries observers from the Australian Fisheries Management Authority for carrying ... Sea fishery using the Chapman- Robson estimator (Dunn et al., 2006). A recent update of the HIMI ... and McDonald Islands (HIMI, Division 58.5.2) Patagonian toothfish (Dissostichus eleginoides) fishery have ... and releases by age class for this fishery were obtained using proportions-at-length and fishery- and year ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 29–45 : Author(s): Candy, S.G., D.C. Welsford, T. Lamb, J.J. Verdouw and J.J. Hutchins
-
Conservation Measure Conservation Measure 237/XX (2001)
Limits on the Exploratory Fishery for Chaenodraco wilsoni, Lepidonotothen kempi, Trematomus ... Limits on the Exploratory Fishery for Chaenodraco wilsoni, Lepidonotothen kempi, Trematomus ... . 229/XX Observers 9. Each vessel participating in this fishery shall have at least one scientific ... will be collected from research and commercial hauls, as required by the CCAMLR Scientific Observers Manual ... observer appointed in accordance with the CCAMLR Scheme of International Scientific Observation, and where ... possible one additional scientific observer, on board throughout all fishing activities within ...
Conservation Measure : 237/XX (2001)
-
Review of length-weight relationships for Antarctic krill
Paper Title: Review of length-weight relationships for Antarctic krill Abstract / Description ... : Length-weight relationships for krill, Euphausia superba (as well as relationships for other Antarctic ... Review of length-weight relationships for Antarctic krill ... Length-weight relationships for krill, Euphausia superba (as well as relationships for other ... WG-KRILL-92/1S REVIEW OF LENGTH-WEIGHT RELATIONSHIPS ... FOR ANTARCTIC KRILL v. Siegel* Abstract Length-weight relationships for krill, Euphausia superba (as well ... relationships are presented. Resume Les relations longueur-poids du krill, Euphausia superba, (ainsi que les ... of aquatic organisms is useful for a variety of studies related to fisheries biology. Biomass and production ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 145–155 : Author(s): Siegel, V.
-
The CCAMLR Scheme of International Scientific Observation – A scoping paper on the operations and sampling requirements of the scheme
Abstract: Since its inception in 1992 the CCAMLR Scheme of International Scientific Observation ... Scientific Observation – A scoping paper on the operations and sampling requirements of the scheme Approval ... Since its inception in 1992 the CCAMLR Scheme of International Scientific Observation  ... The CCAMLR Scheme of International Scientific Observation – A scoping paper on the operations ...
Meeting Document : WG-FSA-12/63 : Author(s): Secretariat
-
Intra-annual variability in the density of Antarctic krill (Euphausia superba) at South Georgia, 2002–2005: within-year variation provides a new framework for interpreting previous ‘annual’ estimates of krill density
% of the observed week-to-week variation. Estimates of krill density from moored instruments were not statistically ... Paper Title: Intra-annual variability in the density of Antarctic krill (Euphausia superba ... ‘annual’ estimates of krill density Abstract / Description: Upward-looking acoustic Doppler current ... of South Georgia between 14 October 2002 and 29 December 2005 to measure density of Antarctic krill ... , by direct observation, variation in krill density on sub-annual time scales, or to address directly ... observations, because the timing of the cruise could signifi cantly affect the estimate of krill density ... measurements were used to scale time-based acoustic observations of krill over the moorings to area-based ... to the acoustic backscatter data to give a virtual position for each observation. Calculation of krill density ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 27–41 : Author(s): Saunders, R.A., A.S. Brierley, J.L. Watkins, K. Reid, E.J. Murphy, P. Enderlein and D.G. Bone
-
Seabird mortality in the longline fishery for Patagonian toothfish at the Prince Edward Islands: 1996–1997
1997. Data on seabird bycatches were obtained from fishery observers aboard 10 of 12 sanctioned fishing ... on seabird bycatches were obtained from fishery observers aboard 10 of 12 sanctioned fishing trips. Some 3.2 ... . This paper summarizes the mortality of seabirds associated with this fishery during the year July 1996-June ... trips. Some 3.2 million hooks were observed during the period November-June, representing 84 ...
Meeting Document : WG-FSA-97/51 : Author(s): Boix-Hinzen, C., Enticott, J.W., Ryan, P.G., Wanless, R., Purves, M., Nel, D.C.
-
Spawning locations of mackerel icefish at South Georgia
data from commercial fisheries and research surveys. It is concluded that there is strong evidence ... alongside new data from commercial fisheries and research surveys. It is concluded that there is strong ... the commercial fishery was operating. Such a conclusion is in line with the observations of Dr V. Herasymchuk ... . Murphy, and G. Parkes. 1998. Analysis of haul data from the South Georgia krill fishery. CCAMLR Science ... alongside new data from commercial fisheries and research surveys. It is concluded that there is strong ... INTRODUCTION Over the past 30 years there has been a fishery, large in some seasons, for mackerel icefish ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 107–118 : Author(s): Everson, I., A.W. North, A. Paul, R. Cooper, N.C. McWilliam and K.-H. Kock