Search results

1. Fishing for toothfish using pots: results of trials undertaken around South Georgia, March–May 2000

   . ~ P H npPIMeHeHPIPI 3TOrO MeTOAa 6b1n IIOJlyYeH D. elegii~oiries, onHaKo ~a6nm~ancx H 6onbmofi npHnoB ~pa6oB. Kos ... of bait on the surface. Birds generally stayed away from the area where pots were hauled. Many birds ... in the vicinity of tlie chute generally showed little interest in these discards. Only one instance of predatio ... at S o n t R ~ e o r g i a . By-catch Species Number Size Range ( a n ) Grey rockcod (Lepidoizotofllrii squnnrifr.ons) 9 4 29-41 ... eliminated bird by-catch. To capitalise on this feature, there is a need to improve the commercial viability ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 93–105 : Author(s): Agnew, D.J., T.M. Daw, G.M. Pilling and M.G. Purves

2. Use of indices of predator status and performance in CCAMLR fishery management

   of likely operational constraints on fisheries. File:  20-Croxall.pdf ... to the point where the fishery becomes uneconomic and therefore unsustainable. This may also eliminate one ... stronger influences than biological ones, but the above assumption is probably a suitably conservative one ... scheme. Rather, the aim is to suggest one possible approach, which can then serve as a basis ... be somewhat arbitrary, especially in the present state of our knowledge. One alternative would be to take ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 353–365 : Author(s): Croxall, J.P.

3. Analysis of the diet of Champsocephalus gunnari at South Georgia in late summer from 1994 to 1997, Dr Eduardo L. Holmberg surveys

   and Shag Rocks in the period investigated, except in 1994, when the order of importance of these two ... and Thysanoessa sp., which are known to be important alternative food in years of krill scarcity, as well as fish ... , was only occasional or negligible and varied from year to year. The spatial distribution of the main prey ... 48.3, did not show a consistent pattern from year to year.  Likewise, in the four surveys by the Dr ... with material from the 1994 and 1995 surveys, correspond to age groups 1 to 3 years (Barrera-Oro et al., 1994 ... The mackerel icefish (Charnpsocephalus gunnaui) levels up t o t he early 1990s (CCAMLR, 1990b, is one ... % full), 4 (100% full). During the four surveys, C. gunnari was caught in all the trawls but one ... shelf (south of 54'55's) in February 1995 and in March/April 1997. At one station in this zone ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 103–123 : Author(s): Barrera-Oro, E., R. Casaux and E. Marschoff

4. Otolith and body size relationships in bigeye grenadier (Macrourus holotrachys) in CCAMLR Subarea 48.3

   reproduction doivent être prises en compte si l’on entreprend de déterminer le poids des poissons à partir de ... to one species, M. holotrachys. The following data were collected for each fi sh: total length Lt (cm ... prey items found in the diets of marine predators. One diffi culty is that otoliths may erode during ... , Subarea 48.3 0 10 20 30 40 50 60 70 80 90 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 0.55 ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 133–143 : Author(s): Morley, S. and M. Belchier

5. On the instantaneous natural mortality rate of Champsocephalus gunnari, South Georgia (Subarea 48.3)

   composition of catches from 1964/65 to 1968/69 and the age/length key for the first half of 1972 were used ... /69 and the age/length key for the first half of 1972 were used in the calculations. The results ... individual season and for the entire period. Age composition over all seasons was . determined using two ... parameter a is close to zero. The following two procedures were used to calculate the age structure ... ) and in 1968/69, when mean age is the lowest then M (derived using the above two methods) is the greatest ... determined using two procedures for calculations. Age 1964/65 1966/67 1967/68 1968/69 1964-69 1964-69 ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 313–326 : Author(s): Frolkina, G.A. and R.S. Dorovskikh

6. Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken in the South Georgia area in 1990

   samples (n =140) were used in age determination. Age groups from 1+ to 9+ were present in catches. Two ... ) were used in age determination. Age groups from 1+ to 9+ were present in catches. Two peaks in size ... Paper Title:  Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken ... Age determination of Champsocephalus gunnari Lönnberg, 1905 (Channichthyidae) taken in the South ... depends on the accuracy of age determination. Since Champsocephalus gunnari is one of the most abundant ... lines, or more rarely a single wide one (Figures 2 to 8). Our age/length data were on the whole close ... WG-FSA-90/33 AGE DETERMINATION OF CHAMPSOCEPHALUS ... ) were used in age determination. Age groups from 1 + to 9+ were present in catches. Two peaks in size ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 285–293 : Author(s): Kochkin, P.N.

7. A declining trend in the abundance of Notothenia rossii marmorata and Notothenia gibberifrons observed in fjords in two sites in the South Shetland Islands

   gibberifrons observed in fjords in two sites in the South Shetland Islands Abstract / Description:  A declining ... in two sites in the South Shetland Islands (Subarea 48.1), is analyzed by a nested ANOVA and demonstrated ... de Mayo I., over a period of eight years from 1983 to 1990 and in waters around Half-Moon I., Moon ... by this method did not utilize a consistent amount of effort between years, the analysis made use of standardized ... yield (MSY) might well take more than two or three decades. REFERENCES BARRERA-ORO, E.R. 1989. Age ... ., 1990; Barrera-Oro and Casaux, 1990) where morphometric and meristic data, sex, maturity stages, ages ... ~ {'" """;.,, ", .... ",,,,:',, ... , .... , , ........ , ....... , ............ '.' , .. ", "' .. , ..... ::,';; .. B --.\1(.. .,:~: .. ::::: ::~.::':' - o. o 1 I km ON ... 1988 1989 1990 """*- l'l. neglecta(NEG) -E- lV, gib ber'if1"OnS (NO G) '\7 E' A D Q I ~ ... JL ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 263–274 : Author(s): Barrera-Oro, E. and E. Marschoff

8. Modelling catch and effort data using generalised linear models, the Tweedie distribution, random vessel effects and random stratum-by-year effects

   distribution, random vessel effects and random stratum-by-year effects Abstract / Description:  The current ... of standardised CPUE estimates and their precision can be obtained from the ‘fishing year’ parameter estimates ... of the imbalance in the number of hauls in the year-by-vessel cross-classification. Further, the inclusion ... of an area stratum by fishing year interaction as an additional random effect in the GLMM is investigated ... cation of the random effects term Zu is general enough to allow for more than one sampling level (multi ... - level models) and more than one set of correlated random effects per sampling level (Candy, 2000 ... classifi ed into one of the four categories: 0–500 m, 500–1 000 m, 1 000–1 500 m and 1 500 m and above ... in the GLMM were cruise and stratum-by-year interaction. These two random-effect terms were assumed ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 59–80 : Author(s): Candy, S.G

9. Krill (Euphausia superba Dana) resources and distribution in the Wilkes Land area in the seasons 1986 to 1989

   krill aggregations. Two research vessels were simultaneously involved in the survey with one vessel ... involved in the survey with one vessel conducting commercial krill fishing. The whole survey area from ... focused on the search for exploitable krill aggregations. Two research vessels were simultaneously ... krill aggregations. Two research vessels were simultaneously involved in the survey with one vessel ... the 1986 season. Two vessels were annually deployed in the area between 130° and 1500E; one vessel ... -IHeHTaJIbHOrO CKJIOHa. UPI-I OnI-lCaHI-II-I Ka:>K.z:.oro no.z:.patioHa 6bIJIO YKa3aHO KOJII-IlIeCTBO Haxo.z ... regularly between 65°00' _66° 1 0' S, and 137° -1400 E. One of the interesting findings is a sector ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 149–162 : Author(s): Dolzhenkov, V.N. and V.P.Timonin

10. Sexing of adult Adélie penguins by discriminant analysis of morphometric measurements

    been determined earlier by means of observing the birds' breeding behaviour (first incubation ... depth only also gave good results (80% correct). File:  33-Scolaro-et-al.pdf ... gave good results (80% correct). ... WG-CEMP-90n SEXING OF ADULT ADELIE PENGUINS ... and bill depth only also gave good results (80% correct). Resume U ne analyse discriminante de huit ... discrimination s'est egalement montree satisfaisante (correcte it 80%). Pe3IOMe l{J151 onpe,lleJleHH5I ... nOJlOBOH npHHa,llJle)l{HOCTH nHHrBHHOB A,lleJlH HCnOJlb30BaJlC5I ,llHCKpHMHHaHTHbIH aHaJlH3 ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 543–549 : Author(s): Scolaro, J.A., Z.B. Stanganelli, H. Gallelli and D.F. Vergani

Pages