Search results
-
Low breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season
fewer local trips and both sexes spent longer at sea than in years of higher breeding success. Meal ... fewer local trips and both sexes spent longer at sea than in years of higher breeding success. Meal ... in comparison to most other years. Two other years, 1994/95 and 1995/96, also experienced low breeding success ... during mid-January each year at longitude 60°E. Chick Growth (CEMP A7) About 30 chicks were weighed ... trips were categorised years were classified into four distinct groups. The into two groups according ... Season year is shown in Table 1. We found a negative (Kruskal-Wallis One-way ANOVA on Ranks ...
Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 151–167 : Author(s): Irvine, L.G., J.R. Clarke and K.R. Kerry
-
Quantifying movement behaviour of vessels in the Antarctic krill fishery
/ Description: Ten years of recent fine-scale haul-by-haul krill data were used to characterise the behaviour ... for high-quality year-round data on all vessels participating in the krill fishery to assist ... Ten years of recent fine-scale haul-by-haul krill data were used to characterise the behaviour ... for high-quality year-round data on all vessels participating in the krill fishery to assist ... operational data need to be updated because the krill fishery has changed markedly over the last 20 years ... , assuming 60 n miles for one degree latitude and 30 n miles for one degree longi- tude. The range of area ... Kingston, Tasmania 7050 Australia Email – so.kawaguchi@aad.gov.au Abstract Ten years of recent fine ... are proposed based on the results from this study. These analyses demonstrate the need for high-quality year ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 131–148 : Author(s): Kawaguchi, S. and S.G. Candy
-
Krill biomass assessment in Statistical Area 48 from the RV AtlantNIRO data - Autumn 1989/90
1989/90 Abstract / Description: A krill biomass census survey was carried out at two fishing grounds ... . In contrast to this site, the one off the South Orkney Islands is well-established in terms of both research ... A krill biomass census survey was carried out at two fishing grounds in the South Sandwich ... , the one off the South Orkney Islands is well-established in terms of both research and commercial ... consisting of two parts; the northern (55° to 600 S; 32° to 18°W) and southern (60° to 67°S; 20° to 18 ... census survey was carried out at two fishing grounds in the South Sandwich and South Orkney Islands ... was concentrated in the waters of the Weddell Sea. In contrast to this site, the one off the South Orkney Islands ... was 60 miles by latitude and longitude and during the second survey it was 30 miles by latitude and 40 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 115–121 : Author(s): Fedotov, A.C.
-
The ecosystem approach to managing fisheries: achieving conservation objectives for predators of fished species
annual yield (Constable et al., 2000). The amount was selected to deplete the stock ill 20-30 years, wl ... , KaK npeAnOn2lr2leTCZ, MorYT 6b1~1-r HenOCpenCTBeHHO CBR3BHb1 C l303flefic~B~eM ITpOMblCna ... offspring in that year, and m,,,, ,, is the predator-specific metabolic cost of maintaining one unit ... one year to the next and the consequences for the populations of predators of a changing food supply ... fisheries impact incidentally on an ecosystem, (ii) what should be the conservation objectives for predators ... Paper Title: The ecosystem approach to managing fisheries: achieving conservation objectives for ... in its infancy. A general approach is proposed for maintaining ecological relationships and providing ... for the recovery of depleted populations in food webs supporting fisheries. This paper addresses the ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 37–64 : Author(s): Constable, A.J
-
Detection and quantitative estimation of krill concentrations by hydroacoustic instruments
operating at comparatively low frequencies (20-30 kHz) are much less sensitive in registering krill ... des appareils hydroacoustiques sur le navire de recherche Odyssee. On a etabli que le sonar SK-l20 ... bajo del programa FIBEX. Se demostro que el aparato hidroacustico Simrad SK-l20, con el TGV ... TeOpeTHqeCKHM paCqeTaM 30Ha 06HapY:>KeHH~ OTAeJI bHbfX oc06eH MO:>KeT 6h[T b 3HaqHTeJIbHO YBeJIHqeHa 3a CqeT ... instruments was established on board the research vessel Odissey during the international expedition under the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 123-139 : Author(s): Yudanov, K.I.
-
An iterative model to construct an age/length key to assess the age composition of a new fishery for Dissostichus eleginoides in Chilean waters
distribution derived from the model is not significantly different from the one obtained by using traditional ... the one obtained by using traditional methods ... . O~~~~~~--~~---L--~~~~ 2 4 6 8 10 12 14 16 11 20 Edod COMPOSitiON tAPTURA EDAD ABR - "UN 1992 21.000 ... that age distribution derived from the model is not significantly different from the one obtained ... , que van desde e1 grupo 3 al20. El rango de edades de los machos fluctu6 entre 3 y 16 aiios ... , observandose una mayor frecuencia en los 11 aftos. Por su parte en las hembras, fluctu6 entre los 3 y 20 aiios ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 11–20 : Author(s): Robotham, V. H. and Z. Young U.
-
Differentiation of independent populations of Antarctic krill
. On the basis of the review, it is suggested that there is probably one composite population of E. superba ... , at least six stable cyclonic water circulations can be found and at least two or three of them may ... circulation. On the basis of the review, it is suggested that there is probably one composite population ... . At present, at least six stable cyclonic water circulations can be found and at least two or three of them ... , it is suggested that there is probably one composite population of E. superba in the Southern Ocean subdivided ... circulations can be found and at least two or three of them may be habitats of independent krill sub ... - DIFFERENTIATION OF INDEPENDENT POPULATIONS OF THE ANTARCTIC KRILL In recent years, several countries (Poland ... to two questions : the existence in the Southern Ocean of stable large-scale water circulations ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 275-281 : Author(s): USSR
-
The biology, ecology and development of fishery management advice for the anomuran crabs at South Georgia (CCAMLR Subarea 48.3)
–0.5 05.1–2.50 2.51–10.00 10.10–20.00 44°15'W 43°30'W 42°45'W 42°0'W 41 ... less than once every two years. A comparative study of aspects of reproduc- tion in the lithodids ... Survey High Cross, Madingley Road Cambridge CB30ET United Kingdom Email – markb@bas.ac.uk ... diomedeae is one of the deepest occurring lithodids and has been caught at depths exceeding 2 500 ... available information on the biology and ecology of the lithodids at South Georgia and provides an overview ... Paper Title: The biology, ecology and development of fishery management advice for the anomuran ... of the development of a management regime for them. Finally it aims to highlight areas in which ... further research should be directed in order to provide information on which to base the most appropriate ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 1–15 : Author(s): Belchier, M., T. Peatman and J. Brown
-
Evaluating the impact of multi-year research catch limits on overfished toothfish populations
Paper Title: Evaluating the impact of multi-year research catch limits on overfished toothfish ... in this study indicate that, where a stock has been depleted to at or below 20% of the median unfished spawning ... Evaluating the impact of multi-year research catch limits on overfished toothfish populations ... that, where a stock has been depleted to at or below 20% of the median unfished spawning stock biomass ... were varied to reduce SSB to 10%, 15%, 20%, 25%, 30% and 35% of SSB0 at the end of the 5-year period ... than 20 years are shaded light grey and those where recovery is greater than 30 years are shaded dark ... 3 with a research catch of 30 tonnes per year for 5 years) to assumptions about selectivity (scenarios ... –1) Parameter set 1 945 10% 0, 15, 30, 45, 60, 75, 90 As per Table 1 2 893 15% " " 3 841 20% " " 4 782 ...
Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 47–55 : Author(s): Welsford, D.C
-
Foraging behaviour and reproductive success in chinstrap penguins: the effects of transmitter attachment
Islands. In total, one member of each pair at 20 nests and both members of each pair at 10 nests were ... to one or both members of a breeding pair; and (iii) variability in foraging patterns of penguins ... between trip durations obtained by applying the transmitters to one or both members of a breeding pair ... members equipped with a transmitter fared worse than both the control group and the group with only one ... Islands. In total, one member of each pair at 20 nests and both members of each pair at 10 nests were ... of transmitters per nest increased from zero, to one, to two (P < 0.005). 295 Of the 12 nest failures ... prior to 10 January. Three of the 20 nests with one mate instrumented failed before the first nest ... check on 30 December (the instrumented birds could not be located visually, although one was regularly ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 291–303 : Author(s): Croll, D.A., J.L. Bengtson, P.L. Boveng, M.E. Goebel and J.K. Jansen