Search results
-
Estimation of natural mortality using catch-at-age and aged mark-recapture data: a simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation
were generated for 12 years of fishing. Two alternative estimation models were programmed in R. Both ... -structured population for each fishing year by annual recursive use of difference equations for population ... numbers at age obtained by integrating a first order ordinary differential equation (ODE) for within-year ... mortality equation (CCODE model) uses an ODE with constant within-year catch per unit time for each age ...
Meeting Document : WG-SAM-10/11 Rev. 1 : Author(s): S.G. Candy (Australia)
-
Antarctic sea ice losses drive gains in benthic carbon drawdown
as the phytoplankton die and sink to the sea-bed where the carbon is sequestered for thousands of years. This carbon ... Peninsula in the last few years has exposed new open water, allowing large blooms of phytoplankton ... drawdown per year on the West Antarctic continental shelf. Carbon accumulation differs significantly ... in the last few years has exposed new open water, allowing large blooms of phytoplankton to flourish ...
Meeting Document : SC-CAMLR-XXXIV/BG/34 : Author(s): Delegation of the United Kingdom
-
Preliminary model of krill fishery behaviour in Subarea 48.1
of closing the zones around Livingston and Elephant Islands in alternate years would result in an average ... of land-based predators in alternate years under this scenario. Author(s): D.J. Agnew (Secretariat) Title ... of closing the zones around Livingston and Elephant Islands in alternate years would result in an average ... of land-based predators in alternate years under this scenario. ...
Meeting Document : WG-KRILL-93/14 : Author(s): D.J. Agnew (Secretariat)
-
Anthropogenic feather soiling, marine debris and fishing gear associated with seabirds at Bird Island, South Georgia, 2000/01
and fishing gear associated with seabirds at Bird Island, South Georgia. In this, the eighth year ... . Quantities of fishing gear remained within the levels of previous years for all other species. Marine debris ... , the vast majority of which was plastics, showed a 28% increase from the maximum of the previous year ... for grey-headed albatrosses, but a 24% decrease from the maximum of the previous year for wandering ...
Meeting Document : SC-CAMLR-XX/BG/07 : Author(s): Delegation of the United Kingdom
-
CEAMARC, the Collaborative East Antarctic Marine Census for the Census of Antarctic Marine Life (IPY # 53): An overview
countries and 19 vessels. The Collaborative East Antarctic Marine Census (CEAMARC) was a multinational ... of Terre Ade´lie and George V Land of Eastern Antarctica. CEAMARC has provided a robust benchmark ... ship-based research programme in the austral summer of 2007e2008 involving scientists from 30 countries ... and George V Land of Eastern Antarctica. CEAMARC has provided a robust benchmark of the marine life ...
Meeting Document : WS-MPA-11/P01 : Author(s): G. Hosie, P. Koubbi, M. Riddle, C. Ozouf-Costaz, M. Moteki, M. Fukuchi, N. Ameziane, T. Ishimaru, A. Goffart
-
Fishing equipment, marine debris and oil associated with seabirds at Bird Island, South Georgia, 2003/04
such annual report. As in most previous years, more items of fishing gear (mostly longlining gear) were found ... substantially since last year. Grey-headed albatross collected the highest number of marine debris items, mostly ... report. As in most previous years, more items of fishing gear (mostly longlining gear) were found ... substantially since last year. Grey-headed albatross collected the highest number of marine debris items, mostly ...
Meeting Document : SC-CAMLR-XXIII/BG/16 : Author(s): Delegation of the United Kingdom
-
Examination of the characteristics of the fishery for Dissostichus eleginoides in the CCAMLR Statistical Subarea 48.3 and its implications on estimating trends in catch per unit effort
pattern of fishing might have changed over the years, whether the current measure of fishing effort ... eleginoides is not uniformly distributed in its range. In some years, though not all, the fishery becomes ... of fishing might have changed over the years, whether the current measure of fishing effort (number of hooks ... is not uniformly distributed in its range. In some years, though not all, the fishery becomes concentrated ...
Meeting Document : WG-FSA-SAM-05/17 : Author(s): A.J. Constable, S.G. Candy and B. Raymond (Australia)
-
The Patagonian toothfish: biology, ecology and fishery
are a long-lived species (> 40 years), which initially grow rapidly on the shallow shelf areas, before ... ), and inhabit relatively shallow water (< 200m) until 6-7 years of age, when they begin a gradual migration ... are a long-lived species (> 40 years), which initially grow rapidly on the shallow shelf areas, before ... ), and inhabit relatively shallow water (< 200m) until 6-7 years of age, when they begin a gradual migration ...
Meeting Document : WG-FSA-10/P05 : Author(s): M.A. Collins, P. Brickle, J. Brown and M. Belchier
-
Notification of research-in-progress in an Australian tuna fishery of relevance to the conservation of Convention Area seabirds
eastern tuna and billfish fishery (ETBF) of potential relevance to the conservation of Convention area ... This purpose of this document is to inform CCAMLR of work-in-progress in the Australian eastern ...
Meeting Document : WG-FSA-05/13 : Author(s): G. Robertson, B. Wienecke, K. Lawton and B. Baker (Australia)
-
Risk categorisation for Macrourus whitsoni and Amblyraja georgiana in the Ross Sea
. Amblyraja georgiana were categorized as risk status 3 – species that are exploited as bycatch, and have a ... between risk status 2 and 3 – although life history characteristics may make this species vulnerable to ... , and comparison of longline and trawl catch rates with other Antarctic areas suggest that population in ...
Meeting Document : WG-FSA-05/21 : Author(s): R.L. O’Driscoll (New Zealand)