Search results
-
Population genetic structure of Patagonian toothfish in the West Indian Ocean sector of the Southern Ocean
Southern Ocean. The amount of linkage via possible pelagic larval drift or by adult migration (Williams ... within). In a recent genetic study by the authors, no signifi cant differentiation between Macquarie ... of the Southern Ocean by Smith and McVeagh (2000) revealed signifi cant allelic heterogeneity among ... the various shelves and banks separated by such deep water (Williams et al., 2002). As a step ...
Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 21–32 : Author(s): Appleyard, S.A., R. Williams and R.D. Ward
-
Temporal variability and the interrelationships between CEMP parameters collected on Adélie penguins at Béchervaise Island
analysis is extended in this paper by including a wider range of CEMP parameters over a longer time frame ... the within-season penguin weights recorded by the APMS. If simple data from the APMS is successful ... Stan- dard Methods A1 to A9 prescribed by CCAMLR for CEMP data (CCAMLR, 2003). Within-season weights ... on their way into and out of the colony. The sex of tagged birds had previously been determined by ...
Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 75–90 : Author(s): Emmerson, L.M., J. Clarke, K.R. Kerry and C. Southwell
-
Defining smaller-scale management units to further develop the ecosystem approach in managing large-scale pelagic krill fisheries in Antarctica
., 2000). CCAMLR currently manages its fi sheries by setting catch limits for statistical subdivisions ... governed by the boundary of the habitat. Often, the edge of the habitat is graded in quality resulting in ... ) between populations. Its existence is then depend- ent on reproduction by individuals within the ... shing ground further will be dictated by the economic costs that might be involved. Movement from one ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 117–131 : Author(s): Constable, A.J. and S. Nicol
-
Distribution and size of Antarctic krill (Euphausia superba Dana) in Polish commercial catches taken in the Atlantic sector of the Southern Ocean from 1997 to 1999
signifi cantly infl uenced by weather conditions. In 1999, fi shing for krill in the South Shetlands ... varied from 663 to 1 215 specimens/ 1 000 m3; these fi gures varied by area and season (Figure 3). The ... specimens/1 000 m3). The data presented here show that the density of krill concentrations varied by ... summer arrived quickly and the pack-ice was gone by October, the density of krill concentrations ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 83–105 : Author(s): Jackowski, E
-
Otolith microstructure of juvenile mackerel icefish (Champsocephalus gunnari) (Channichthyidae) in the South Georgia area
otoliths is compli- cated by the fact that the otoliths are brittle and not very transparent, and the ... otolith radius and annulus were measured by the ocular-micrometer (20 units = 1 mm). The second otolith ... treatment in hydrochloric acid, as the otoliths of juvenile icefi sh would be dissolved immediately by the ... number of daily increments. The curve is described by the following equation: L = –0.000039n2 + 0.45n ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 173–181 : Author(s): Shcherbich, L.V
-
Simulation of recovery rates of fish stocks in the South Georgia and Kerguelen Islands areas
stocks at South Georgia Island (Subarea 48.3) and Kerguelen Island (Subarea 58.5) have been depleted by ... severely depleted, and the Commission agreed that only small, unavoidable by-catches should be taken. The ... is to fit a mixture of lognormal distributions by a modified kernel method to recruitment data and ... employed is a variation of the kernel technique. The distribution to be estimated is approximated by a ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 229-298 : Author(s): Hennemuth, R.C., K.D. Bisack and G. Duhamel
-
Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in the lower South Shetland Islands, derived from the 2000–2006 monitoring program at Potter Cove
continuous sampling period of 24 years which began in 1983, and from 2001 to 2003 at Harmony Cove (HC). By ... of N. rossii and G. gibberifrons, which are analysed by fi tting an ANOVA model and described using ... means by each year are presented in Figure 1. It should be noted that these estimates have been ... Notothenia rossii and Gobionotothen gibberifrons relative to the catches of Notothenia coriiceps, by catch ...
Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 83–87 : Author(s): Barrera-Oro, E.R. and E.R. Marschoff
-
Survey of Antarctic fur seals in the South Shetland Islands, Antarctica, during the 1986/87 austral summer
first post-exploitation record of successful pup production being reported by O'German (1961) at ... by species, with no differentiation made between age and sex classes except for fur seals. At ... sites where fur seal pups were present, observers counted living and dead pups by censusing colonies ... 1987 and were performed by navigating inflatable boats near shore. All ice-free coasts of the South ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 427-440 : Author(s): Bengtson, J.L., L.M. Ferm, T.J. Härkönen, E.G. Schaner and B.S. Stewart
-
Prey monitoring surveys: a discussion of the characteristics necessary in prey surveys
distinguish between these two characteristics of prey distribution. SURVEY CONSTRAINTS IMPOSED BY THE ... such surveys is constrained by the predator foraging periods; these are : Adelie penguin ... guarding phase is completed by about 2 Jan and creche phase by about 21 Jan. A survey timed to last for ... predators will search radially up to a distance of about 100 km. By analogy with predator foraging ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 377-391 : Author(s): Everson, I.
-
Investigations of required sampling regimes for environmental parameters
necessary to distinguish between changes in the monitored system induced by harvesting of particular ... , paragraph 40). Two categories of environmental parameters were defined by WG-CEMP (1989): those which ... examines several meteorological parameters measured at Davis Station, collected by the Australian Bureau ... " and Yearly. Daily cycles are triggered by daily heating and cooling. "Depressional" cycles are ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 561–573 : Author(s): Agnew, D.J.