Search results
-
Effects of different harvesting strategies on the mackerel icefish Champsocephalus gunnari around South Georgia
with F increasing three or five years after a good recruitment; pulse fishing at an interval of three years ... after a good recruitment. A forward shift in partial recruitment values would not alter yield ... after a good recruitment; pulse fishing at an interval of three years with no fishing in between ... of the incoming year class. An increase of F, however, should not occur earlier than four years after a good ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 77–100 : Author(s): Köster, F.W. and K.-H. Kock
-
Long-term monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)
maximum at the end of December (Siegel, 1988). This maximum can be observed until late February ... weeks to give an earlier start or later end to the cycle. From March onward, the krill stock size ... of the area after 25 days. In 1995 anather buoy was released close to the continental slope in Drake Passage ... . This drifter followed the contours of the slope and reached the northeastern part of the study area after 13 ... Paper Title: Long-term monitoring of krill recruitment and abundance indices in the Elephant ... for the Elephant Island area with regard to the representativeness of the study area (60°-62 o 30´S ... were re-calculated applying the delta distribution approach introduced by de la Mare (1994a). The high ... interannual variability of krill recruitment is confirmed by the present analysis. Results are compared for ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 19–35 : Author(s): Siegel, V., W. de la Mare and V. Loeb
-
Modelling variability and estimating power to detect change in Adélie penguin fledgling weights
weight data were used to examine the power to detect a change in fledgling weights after an impact ... or decrease after an impact. Fledgling weight was found to decline through the fledging period each year ... the power to detect a change in fledgling weights after an impact. The statistical models were developed ... availability as a step change represented as either a percentage increase or decrease after an impact ... the power to detect a change in fledgling weights after an impact. The statistical models were developed ... availability as a step change represented as either a percentage increase or decrease after an impact ... was limited to eight years and to the five-day periods 2–5 starting on 15 February and ending on 6 March ... after that impact (post-impact data), (ii) the impact may cause a systematic change in fledgling ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 191–200 : Author(s): Emmerson, L.M., C. Southwell and J. Clarke
-
Movement and growth of tagged Dissostichus eleginoides around South Georgia and Shag Rocks (Subarea 48.3)
and recaptured from the same longline vessel in 2002 after up to two months at liberty. The fish tagged during ... tags have been recovered from a high seas area on the Patagonian Shelf at 42°S after about one year ... after up to two months at liberty. The fish tagged during the groundfish surveys may not yet be large ... seas area on the Patagonian Shelf at 42°S after about one year at liberty from some opportunistic ... . Four fi sh were tagged and recaptured from the same longline vessel in 2002 after up to two months ... on the Patagonian Shelf at 42°S after about one year at liberty from some opportunistic tagging carried out ... . Fish were released through a PVC pipe which was fi tted to the side of the vessel. The bottom end ... fi sh appeared to be in good condition, with any hook damage observed in the 39 to 71 days after ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 101–111 : Author(s): Marlow, T.R., D.J. Agnew, M.G. Purves and I. Everson
-
Potential interactions between wandering albatrosses and longline fisheries for Patagonian toothfish at South Georgia
as to avoid fishing between the end of February and mid-May. File: 07croxall-prince.pdf ... the end of February and mid-May. ... in such a way as to avoid fishing between the end of February and mid-May. Resume Nous examinons ... the end of February until mid-May, the time of the most serious potential mortality of D. exulans would ...
Science Journal Paper : CCAMLR Science, Volume 3 (CCAMLR Science, Volume 3) : 101–110 : Author(s): Croxall, J.P. and P.A. Prince
-
Distribution characteristics of krill aggregations in the fishing ground off Coronation Island in the 1989/90 season
. The increased temperature towards the end of the season, however, assisted the development of phytoplankton ... aggregations or their density. The increased temperature towards the end of the season, however, assisted ... influence on the types of kriU aggregations or their density. The increased temperature towards the end ... ,ltapTHbIM pa3HOr JIy6HHHblM TpaJIOM C ropH30HTaJIbHblM pacKpblTHeM Me>K,lty KPblJIbSIMH B 33 M. 3a nepHo ... in the number of females with a normal thorax were noted in the south-west towards the end of the study period ... , forming a rather uniform and sparse layer or separate sparse patches after 11 p.m. Swarming occurred ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 49–73 : Author(s): Kasatkina, S.M. and V.I. Latogursky
-
Reproduction of the mackerel icefish (Champsocephalus gunnari) and its implications for fisheries management in the Atlantic sector of the Southern Ocean
by the establishment of a permanent closed fishing season from 1 March to the end of each year's meeting of CCAMLR ... 1 March to the end of each year's meeting of CCAMLR which is usually held in late October or early ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 51–68 : Author(s): Kock, K.-H.
-
Precautionary measures for a new fishery on Martialia hyadesi (Cephalopoda, Ommastrephidae) in the Scotia Sea: an ecological approach
for M. hyadesi after the chick-rearing period of the most sensitive predator (grey-headed albatross) would ... minimise competition locally and ensure that the fishery only exploited the stock after escapement from ... specimens of M. hyadesi. Fishing for M. hyadesi after the chick-rearing period of the most sensitive ... exploited the stock after escapement from most higher predator species. It would also allow seabird ... relatively small and immature specimens of M. Izyadesi. Fishing for M. hyadesi after the chick-rearing ... and ensure that the fishery only exploited the stock after escapement from most higher predator species ... . 3aKpblTHe IIpOMbICna A 0 IIOCTynneUHR cnenywwero noKoneHMx KanbMapoe B n p o ~ b ~ c n o ~ b ~ f i sanac ... the chicks (most species) or from chicks on the nest immediately after being fed (light-mantled sooty ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 125–139 : Author(s): Rodhouse, P.G
-
Krill distribution in the western Atlantic sector of the Southern Ocean during 1983/84, 1984/85 and 1987/88 based on the results of Soviet mesoscale surveys conducted using an Isaacs-Kidd midwater trawl
after the 1983/84 season before reaching their former levels at the beginning of the 1990s (Siegel et ... OT 158 QO 202 c~aqai i , IIpOBOAHnHCb HayYHO-HCCfleQOBaTenbCKkiMM CyAaMH CCCP B neTHe-OCeHHHe ... , and then westwards along meridional sections until the end of the survey near the Antarctic Peninsula. Therefore ... 3 minutes, after which the trawl warp was slowly pulled up and the trawl towed for 5-minute periods ... Paper Title: Krill distribution in the western Atlantic sector of the Southern Ocean during 1983 ... /84, 1984/85 and 1987/88 based on the results of Soviet mesoscale surveys conducted using an Isaacs ... -Kidd midwater trawl Abstract / Description: In this paper we consider the results of three mesoscale ... surveys covering a wide area of krill distribution between the Antarctic Peninsula and South Georgia ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 59–70 : Author(s): Sushin, V.A. and K.E. Shulgovsky
-
Variations in echosounder calibration with temperature, and some possible implications for acoustic surveys of krill biomass
is calibrated regularly at South Georgia before and after krill surveys there, and exhibits temporal stability ... in the Antarctic, even after adjustments have been made to account for differences in sound speed between locations ... echosounder used aboard RRS James Clark Ross is calibrated regularly at South Georgia before and after krill ... gain settings differ markedly from those applied in the Antarctic, even after adjustments have been ... echosounder used aboard RRS Jaines Clavk Ross is calibrated regularly at South Georgia before and after krill ... gain settings differ markedly from those applied in the Antarctic, even after adjustments have been ... , South Georgia, prior to and after most krill surveys. A number of calibrations have also been ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 273–281 : Author(s): Brierley, A.S., C. Goss, J.L. Watkins and P. Woodroffe