Search results
-
A three-frequency method to determine the abundance and the size of two euphausiid species (Euphausia superba and Euphausia crystallorophias)
role in the Ross Sea pelagic ecosystem (Marr, 1962; Azzali et al., 1999). To estimate the abundance ... and to the net avoidance (Wiebe, 1972; Everson and Bone, 1986). This last bias affects particularity the hauls ... in the Ross Sea pelagic ecosystem (Marr, 1962; Azzali et al., 1999). To estimate the abundance of each stock ... uncertainties of net samplings arise due to the selectivity of the net and to the net avoidance (Wiebe, 1972 ...
Meeting Document : WG-EMM-01/63 : Author(s): M. Azzali, J. Kalinowksi, G. Lanciani and I. Leonori (Italy)
-
Catch per unit effort data from the early years of commercial krill fishing operations in the Atlantic sector of the Antarctic
, V. Title: Catch per unit effort data from the early years of commercial krill fishing operations ... Catch per unit effort data from the early years of commercial krill fishing operations ... in single years, between years on a Subarea and Area basis, and between oceanic and shelf regions. Results ... show that the CPUE may differ between Subareas, years and shelf/oceanic regions. Obviously ...
Meeting Document : WG-EMM-97/22 : Author(s): Sushin, V., Siegel, V.
-
Multiple acoustic estimates of krill density at South Georgia during 2000/2001 reveal significant intra-annual and spatial variability
with observations from previous years, krill density in the western box mid-season was less than that in the eastern ... around South Georgia in the 2000/2001 season: in October 2000 (early-season); during late December ... / early January 2000/2001 (mid-season), and in March 2001 (late-season). The surveys were the first ... in a newly-planned five-year series of observations designed to complement and extend an existing time series ...
Meeting Document : WG-EMM-01/15 : Author(s): A.S. Brierley, C. Goss, S.A. Grant, J.L. Watkins, K. Reid, M. Belchier, I. Everson, M.J. Jessop, V. Afanasyev and J. Robst (United Kingdom)
-
Adélie penguin foraging behaviour and breeding success in seasons of contrasting krill availability (Mawson Coast, Antarctica)
differences between the two seasons included A5: foraging trip duration, A6: breeding success and A8: meal ... to the diet in 2003 but was only a minor component in 2001. Differences between years were particularly ... apparent during the late guard to early crèche stages of chick rearing, coinciding with the timing ... on meal mass and foraging trip duration were combined to provide an index of provisioning rate, analogous ...
Meeting Document : WG-EMM-03/44 : Author(s): J. Clarke, M. Tierney, S. Candy, S. Nicol, L. Irvine and K. Kerry (Australia)
-
Foraging trip duration in male and female macaroni penguins at Bouvetøya
Abstract: The CEMP Standard Methods for monitoring foraging trip duration in Macaroni Penguins ... , while the females make frequent foraging trips. We analysed data from 17 males instrumented with VHF ... -transmitters in the middle of the brooding period (chick age 12-18 days) and 17 females instrumented ... at the start of the creching period (chick age 25-30 days). Males made their first foraging trips at the start ...
Meeting Document : WG-EMM-98/28 : Author(s): F. Mehlum, K. Isaksen and V. Bakken (Norway)
-
Entanglement of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during the 2004 winter and 2004/05 breeding season
by 64% from last year. For the first time since records started in 1990, none of the injuries were ... % compared to last year; the lowest number of entanglements recorded since 1989. As in previous years, most ... , this is after an absence of 3 years from the winter records and 2 years from the summer. These findings ... of Antarctic fur seals (Arctocephalus gazella) in man-made debris at Bird Island, South Georgia, during ...
Meeting Document : SC-CAMLR-XXIV/BG/16 : Author(s): Delegation of the United Kingdom
-
Development of the Southern Ocean Continuous Plankton Recorder survey
in the North Sea and North Atlantic Ocean. Sixty-five years later the CPR as a Type II version returned ... south on 110°E in early December and north on 150°E in mid-March each year, and will serve ... Sea and North Atlantic Ocean. Sixty-five years later the CPR as a Type II version returned ... south on 110°E in early December and north on 150°E in mid-March each year, and will serve ...
Meeting Document : WS-BSO-07/P4 : Author(s): Hosie, G., M. Fukuchi and S. Kawaguchi
-
Investigation of the sensitivity of the Ross Sea toothfish assessment to withholding subsets of the available data
of withheld data represented a large contribution to the model. In later years, the change in estimated ... of the MCMC run from the 2009 assessment. For the 2009 assessment removing up to four years of the early tag ... of withheld data represented a large contribution to the model. In later years, the change in estimated ... of the MCMC run from the 2009 assessment. For the 2009 assessment removing up to four years of the early tag ...
Meeting Document : WG-SAM-11/17 : Author(s): S. Mormede (New Zealand)
-
Entanglement of Antarctic fur seals Arctocephalus gazella in man made debris at Signy Island, South Orkney Islands, 1998/99
of seals wearing neck collars of man-made debris, although one individual was observed twice and another ... entangled but had lost their collars by the time of observation. All of the animals involved were juvenile ... males, the main component of the population at this time of year. The number of sightings increased ... fur seals Arctocephalus gazella in man made debris at Signy Island, South Orkney Islands, 1998/99 ...
Meeting Document : SC-CAMLR-XVIII/BG/06 : Author(s): Delegation of the United Kingdom
-
Physical forcing in the southwest Atlantic: ecosystem control
appear to be prior to the breeding season during the summer and early autumn of the preceding year. Thus ... appear to be prior to the breeding season during the summer and early autumn of the preceding year. Thus ... in the physical environment has been recorded since the early part of the last century. For example, ocean ... temperatures are known to vary both between seasons and between years. Time series analysis of sea surface ...
Meeting Document : WG-EMM-04/34 : Author(s): P.N. Trathan, E.J. Murphy, J. Forcada, J.P. Croxall, K. Reid and S.E. Thorpe (United Kingdom)