Résultats de la recherche
-
Integration of CPUE data into assessments using the Generalised Yield Model
/ Description: For the last three years, CCAMLR's Working Group on Fish Stock Assessment (WG-FSA) has ... been presented In CCAMLR as median abundance In each year with 95'% confidence Integration of CPUE ... standardised CPUE trends with those trends predicted by the GYM ailalyses, in each of the last three years WG ... year Y is the latest year for which we have data from the fishery, and simulation years Y+l to Y+P ... and o2 from Differentiating with respect to q demor~strates that equations 2 and 3. I11 equation 5 ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 65–74 : Auteur(s): Kirkwood, G.P. and A.J. Constable
-
Target strength studies on Antarctic silverfish (Pleuragramma antarcticum) in the Ross Sea
-larvae of P. antarcticum with a total length from 13 to 70 mm, were conducted in the southeast of the ... both ex situ and in situ with a mean difference <1.5 dB, although the differences between the ... ), some sizes of P. antarcticum could be confused acoustically with E. crystallorophias, but not with E ... juvenile stages (size: 45–48 mm; age: second year), coinciding with an increase in lipid content in the ... and transversal –3 dB beam widths, were very similar. The trans- ducers were bolted, with their ... experiments targeted at juveniles and post-larvae of P. antarcticum with a total length from 13 to 70 mm ... from 38 to 200 kHz, can predict the experimental TS measured both ex situ and in situ with a mean ...
Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 75–104 : Auteur(s): Azzali, M., I. Leonori, I. Biagiotti, A. De Felice, M. Angiolillo, M. Bottaro and M. Vacchi
-
Potential nursery areas for fish in the Prydz Bay region
survey with a fine-meshed midwater trawl in Prydz Bay in January/February 1991 indicated the potential ... reasonably well with the 0+, 1+ and 2+ year groups established by Hubold and Ekau (1986) for P. antarcticum ... southern, eastern and western margins had low or zero catches. The length frequency distribution (Figure 3 ... PRYDZ BAY REGION R. Williams* * Abstract A survey with a fine-meshed midwater trawl in Prydz Bay ... fishes of the Prydz Bay region using equipment with sufficiently fine meshes to sample larval and ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 369–380 : Auteur(s): Williams, R.
-
Krill (Euphausia superba Dana) resources and distribution in the Wilkes Land area in the seasons 1986 to 1989
involved in the survey with one vessel conducting commercial krill fishing. The whole survey area from the ... for Fisheries 3 The annual period used is the split-year 1 July to 30 June. Split-year is denoted by ... with the other three years, the total biomass of krill in the subarea in 1988 was smaller by a factor ... with one vessel conducting commercial krill fishing. The whole survey area from the coast to ... . As it turned out, during each year of observation aggregations of krill were observed most ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 149–162 : Auteur(s): Dolzhenkov, V.N. and V.P.Timonin
-
Distribution of krill (Euphausia superba Dana) catches in the South Shetlands and South Orkneys
in all years 1988 to 1991. In 1987, 1988 and 1991, 75% of the catch in Subarea 48.2 between December ... , foraging ranges and population sizes from the literature are used to show that for some years catches ... fishery may have to increase by a factor of 2 or 3 before ratios of catch to consumption approach maximum ... was similar for each of the years examined whereas that for Subarea 48.2 changed each year (Figures 3 ... within 100 km of colonies during these months. 291 The years with the greatest fishery impact were ... islands is fairly consistent from year to year, and is located over the shelf break to the north and west ... , accounting for 45% of the total krill consumed each year. Crabeater seals (Lobodon carcinophagus), which are ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 287–303 : Auteur(s): Agnew, D.J.
-
A possible framework in which to consider plausible models of the Antarctic marine ecosystem for evaluating krill management procedures
framework for allowing flexibility in dealing with biological, spatial and temporal scales. The body of the ... paper is concerned with conceptualising an element of the ecosystem to account for the varying qualities ... dealing with biological, spatial and temporal scales. The body of the paper is concerned with ... to assist with manage- ment of the krill fi shery (SC-CAMLR, 2003), and now to begin to evaluate ... . Similarly, some temporal processes may only need updating once per year while others may need to be ... will ensure that each element can effectively interact with other elements. Figure 4 illustrates the ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 99–117 : Auteur(s): Constable, A.J
-
Size compositions of males and females in the course of the life cycle of Euphausia superba
, using samples from different years. The observed variations were related to stages of krill maturity ... season. Stages of the reproductive cycle are given with reference to developmental stages of females ... non-mature or at the beginning of maturation (lIB, ma-me); B ready for spawning with developed ... oocytes (mD); C recently spawned (ovaries with residual oocytes), juvenilization of ovaries has not yet ... started (HIE); D post-spawning with juvenilized small ovaries (usually with residual round oocytes ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 3–16 : Auteur(s): Makarov, R.R.
-
Biomass, abundance and distribution of fish in the Kerguelen Islands EEZ (CCAMLR Statistical Division 58.5.1)
Division 58.5.1). The swept-area method was used in the depth range from 100 to 1 000 m with 207 random ... strata was similar to those reported for the biomass (Figure 3) with only small differences in relative ... , see Figures 18 and 19) with modes mainly corre- sponding to the age classes 1, 2 and 3 (Duhamel ... method was used in the depth range from 100 to 1 000 m with 207 random stratified stations. Estimates of ... Plateau with a shelf occupying a large part of the zone. The shelf of the Heard and McDonald Islands ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 1–32 : Auteur(s): Duhamel, G. and M. Hautecoeur
-
Directed research. Antarctic Marine Living Resources (AMLR). A program development plan
, among other things, that: “(A) The Director of the National Science Foundation, in consultation with the ... States Antarctic Program; (B) The Secretary of Commerce, in consultation with the Director of the ... , shall design and conduct a program of directed scientific research coordinated with the United States ... grounds. In cooperation with other government agencies and the private sector, the National Marine ... National Science Foundation, in consultation with the Secretary of State and the heads of other ... Secretary of Commerce, in consultation with the Director of the National Science Foundation, the Secretary ... directed scientific research coordinated with the United States Antarctic Program." The U.S. Program of ... cooperation with other government agencies and the private sector, the National Marine Fisheries Service ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 363-373 : Auteur(s): Office of Science and Technology, NMFS, NOAA, US Department of Commerce (USA)
-
Results of fish larvae sampling by means of fine-meshed samplers attached to a bottom trawl
similar to those taken by samplers made using 12 mm net with 0.505 mm insets. The 12 mm net was, however ... postlarval fish was highest in the shallow (108-166 m), nearshore waters of the north eastern shelf of South ... , vertical and temporal distribution and early life history relevant to monitoring year-class strength and ... of fish captured per hour fished, 2 - hauls with no fish captured, 3 - Nototheniidae, 4 - other fish ... made using 12 mm net with 0.505 mm insets. The 12 mm net was, however, more vulnerable to damage. The ... Siedlecki in cooperation with US scientists*. The sampling methods and gear were developed at the Sea ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 69-86 : Auteur(s): Ślósarczyk, W. and I. Wójcik