Résultats de la recherche
-
Age and growth of Antarctic euphausiacea (crustacea) under natural conditions
Peninsula and the south-eastern Weddell Sea. Life spans range from two years for Euphausia frigida to six ... eastern Weddell Sea. Former opinions that differ are discussed. Seasonal growth was re-analyzed for the ... species Euphausia triacantha, and a three-year life span proposed. Male Euphausia crystallorophias have a ... years for the krill Euphausia superba. Growth in length and weight was calculated by non-linear ... south-eastern Weddell Sea. Life spans range from two years for Euphausia frigida to six years for the ... difference in growth of krill was observed between the Antarctic Peninsula area and the eastern Weddell Sea ... triacantha, and a three-year life span proposed. Male Euphausia cr¥stallorophias have a shorter life span ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 369-370 : Auteur(s): Siegel, V.
-
Movement, growth and available abundance to the fishery of Dissostichus eleginoides Smitt, 1898 at Heard Island, derived from tagging experiments
that have lost one tag indicates that the probability of losing both tags after one year at liberty ... (the reference day) of each year of the fi shery in ground B with the 95% confi dence limits (using ... pro- gram of tagging D. eleginoides in the HIMI fi shery was instigated, in collaboration with the ... a similar fi shery at Macquarie Island since January 1996. Fish were tagged with two separate ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 33–48 : Auteur(s): Williams, R., G.N. Tuck, A.J. Constable and T. Lamb
-
Analyses of acoustic line-transect data from the waters around South Georgia: estimation of krill (Euphausia superba Dana) – biomass
consumption rate is spread throughout the year and should not be compared directly with standing stock ... transects with the direction of the transect perpendicular to the long-axis of the island. Nine major ... taken during the survey period is shown in Figure 2. Most of the krill were small, with a mean length ... krill distribution can be considered random with respect to the transects. The equations can be ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 225–243 : Auteur(s): Murphy, E., I. Everson and A. Murray
-
Estimating unaccounted fishing mortality in the Ross Sea region and Amundsen Sea (CCAMLR Subareas 88.1 and 88.2) bottom longline fisheries targeting Antarctic toothfish
unaccounted fishing mortality from lost lines in these fisheries is provided. These estimates suggest that on ... unit (SSRU) (ii) quantify the number of hooks lost attached to sections of line each year, and the ... Antarctic toothfish associated with lost lines, including associated uncer- tainty (iv) make ... year to include reporting of hooks lost during fishing activities (SC-CAMLR, 2007b (paragraph 13.12 ... from the analysis. If a vessel reported any non-zero value for lost hooks in any year, then any ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 17–30 : Auteur(s): Webber, D.N. and S.J. Parker
-
A statistical method for estimating the level of IUU fishing: application to CCAMLR Subarea 48.3
there must have been at least one encounter with an FPV in a year; no encounters in a year are ... with IUU fishing. The mean and variance of fish catch rate was calculated for each area and each year ... measures. Three years were analysed: 1998/99, 1999/2000 and 2000/01. Each year fully covered the period 1 ... highly skewed, with medians in the three years of 621, 2 852 and 550 birds respectively. 95% confidence ... encounter with an FPV in a year; no encounters in a year are interpreted as zero IUU fi shing. For each IUU ... IUU cruise1 detected by an FPV, i, in year y, Di,y, was thus calculated from FPV encounters with IUU ... year that is indicated by the FPV encounter with an IUU vessel. If A is defi ned as adjusted days fi ... methodology used for estimating p. Adjusted days fi shing was then combined with area- and year-specifi c ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 119–141 : Auteur(s): Agnew, D.J. and G.P. Kirkwood
-
Scientific observations in CCAMLR fisheries – past, present and future
strategy has often had to deal with incomplete and uncertain information on affected resources. Fishery ... own country. This paper outlines the history of the scheme in terms of its logistics, participation ... sheries, CCAMLR’s fi sheries management strategy has often had to deal with incomplete and uncertain ... operate on vessels under fl ags other than that of their own country. This paper outlines the history of ... associated with fi shing (see observer task (v) above)2. More recently, scien- tifi c observers have also ... Member). Designating Members appoint scientifi c observers who are familiar with harvesting and ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 81–98 : Auteur(s): Sabourenkov, E.N. and E. Appleyard
-
Defining smaller-scale management units to further develop the ecosystem approach in managing large-scale pelagic krill fisheries in Antarctica
effects of fishing is discussed. In general, the early acquisition of information on the distribution of ... the early development of the fishery could be concentrated in a small number of units in such a way ... ), Subarea 48.2 (middle panel) and Subarea 48.1 (bottom panel). The season marked by each title year and ... general, the early acquisition of information on the distribution of local populations of krill and the ... undertaking an assessment of long-term annual yield. It is proposed that the early development of the fi ... been resolved, despite early consideration of the options that could be used to provide for an ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 117–131 : Auteur(s): Constable, A.J. and S. Nicol
-
Brief report of the joint Soviet-Australian expedition of the USSR FRV Professor Mesyatsev to the Australian fishing zone around the territory of Heard and McDonald Islands, May-August, 1987
. On the eastern side of the border of the fishing ground is a broad basis with gentle slopes. The ... small proportion of fish had gonads with signs of long past spawning (not less than half a year ago ... ). Ichthyoplankton collections were made with a drifting PNS-1 net. 3. The bottom was sampled at some shallower ... from 1-166 mg per 10 minutes of trawling with the BMS-3 net (mean 33.7g/10 min of trawl). The least ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 75-103 : Auteur(s): Gherasimchook, V.V., V.N. Brodin, A.V. Kljausov, I.B. Russelo, P.V. Tishkov and N.B. Zaremba
-
Acoustic estimates of krill density at South Georgia, 1981 to 1998
from year to year over that time, ranging from ≈ 2 to ≈ 150 g m-2 (fresh mass). The 1982, 1991 and ... years; by convention the year given refers to the year in which the season ended) BAS has conducted ... years ,90' ,982 ,9i5 ,pB ,9+ ,9s6 $6' 40% ,989 ,99' ,992 ,9@ ,9qb ,9qb ,9q6 ,992 49% Year Figure 2 ... given year is less than p - o for all years, then the year in Acoustic estimates of krill density ... ), four years exhibited greater density in the east. The year deviating from this pattern, 1994, was ...
Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 47–57 : Auteur(s): Brierley, A.S., J.L. Watkins, C. Goss, M.T. Wilkinson and I. Everson
-
Joinville–D’Urville Islands (Subarea 48.1) – a former fishing ground for the spiny icefish (Chaenodraco wilsoni), at the tip of the Antarctic Peninsula – revisited
Expedition ANT XIX/3 by RV Polarstern in February 2002. Five hauls were conducted north of the two islands at ... sh belonged to age classes 3 and 4, with very few 2- and 5-year-old fi sh present (n = 163 ... stage or at an early stage of maturation (stage 2, early stage 3) in January–February or were juvenile ... –33cm long) were either resting (stage 2) or in an early stage of maturation (beginning stage 3 ... age classes 2 and 3, with some age 4 and a few age 5 individuals present (n = 79). In 1980, most fi ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 1–20 : Auteur(s): Kock, K.-H., L. Pshenichnov, C.D. Jones, K. Shust, K.E. Skora and Zh.A. Frolkina