Результаты поиска

1. Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longlines

   addition to providing a methodology that could be used in other areas with depredation issues, these ... aimed at providing two indirect methods of assessment of depredated biomass over an 11-year period (2003 ... loss d loss d j k l d B c c E c= å (3) where ( ) , ,j k lloss dB c equals the fish biomass lost ... estimates of fish biomass lost to depre- dation were then calculated by summing the results of equation 3 ... Cd: cells cd with available data in both absence and presence of odontocetes (equations 1, 2, 3, 4 ... 3), but no seasonal trend could be detected in grenadier catch rate (R2 = 0.00, P = 0.99) with a ...

   Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 1–14 : Автор(ы): Gasco, N., P. Tixier, G. Duhamel and C. Guinet

2. CPUE indices used in Soviet krill fishery statistics from 1977 to 1992 and their possible utility for evaluation of relative changes in krill biomass

   is diffi cult to trace the peaks associated with short hauls and low catches in Figures 3 and 4. At ... effort (CPUE) data from the early years of commercial krill fi shing operations in the Atlantic sector ... . Compared to the Atlas, the RIF statistics contain from 2 to 78% of data for various years and 34.2% of ... per vessel-days fi shed plus days with no actual catch due to stormy weather or absence of suitable ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 165–177 : Автор(ы): Litvinov, F.F., A.Z. Sundakov and V.I. Arkhipov

3. Performance and geometry of the FP-120 trawl used during UK fish stock assessment surveys around South Georgia, Subarea 48.3

   100 m, during operations with the 36/47 GOV trawl on the RV Argos. Later studies (e.g., Matuda et ... . ITpenc~asne~bi pe3ynb~a~b1 3 a ~ e p o ~ Tpana FP-120 B ( p a 6 o u e ~ p e x m e ) , npRMeHxsruerocx ... , biomass, finfish, CCAMLR INTRODUCTION Surveys using bottom trawls have been used for over 20 years to ... in 1992, the mini-transponder was lost on the first trawl on which it was deployed. Additionally ...

   Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 51–69 : Автор(ы): Pilling, G. and G. Parkes

4. Status of krill target strength

   high signal-to-noise-ratio conditions, are consistent with the general pattern. Several specific ... -ratio conditions, are consistent with the general pattern. Several specific recommendations are made ... TOJIbKO H3MepeHHH npOBe,lleHHbIX Ha CKOnJIeHH5IX )l{HBbIX 3B3 ... bIB a Tb BJIH5IHHe "noporOBOH 31972; MacLennan, 1990) has been applied to krill (Euphausia superba) in the Southern Ocean (Miller and ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 101–126 : Автор(ы): Foote, K.G., D. Chu and T.K. Stanton

5. Target strengths of Antarctic krill (Euphausia superba)

   suspension lines, and (3) damage of the cage, with mass escape of krill, owing to a presumed collision or ... and Nakken 1972, Johannesson and Mitson 1983), knowledge of the target strength is essential. The ... fraught with errors and whose accuracy "is probably no better than ±1.4 dB" (Blue 1984). This figure is ... much inferior to that readily obtainable with standard spheres (Foote and MacLennan 1984, Robinson ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 265–279 : Автор(ы): Everson, I., D.G. Bone, J.L. Watkins and K.G. Foote

6. The utilization of seabird censuses for krill monitoring

   Ocean is explored. No variation source directly linked with krill was identified by means of ... capable of detecting changes in bird abundance and/or species composition, associated with three levels of ... application of discriminant analysis. Further developments of the method are possible only with greater ... explored. No variation source directly linked with krill was identified by means of correspondence ... of detecting changes in bird abundance and/or species composition, associated with three levels of ... with greater databases, calling for international cooperation on the subject. Est exploree la ... MONITORING E. R. Marschoff, J.G. Visbeek and L.R. Fontana Instituto Antarctico Argentino Man-induced ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 393-425 : Автор(ы): Marschoff, E.R., J.G. Visbeek and L.R. Fontana

7. Physical oceanographic setting of the Siedlecki January 1987, South Shetland Island data set

   mixing processes of Bransfield Straits water (derived from the Weddell, with further local modification ... the Scotia Front protrudes to the south, perhaps associated with mesoscale structures. The Weddell ... -Scotia Confluence in the Bransfield Straits is associated with abundant krill populations. It is ... population (Marr, 1962). The Weddell Gyre is a large, wind-driven cyclonic gyre, with a transport of 70 to ... discussed above (Figure 3 a,b). Comparison with the large scale water mass distribution (Figure 4) supports ... of the front with the Pacific water. 3. DISCUSSION Besides Pacific water intrusions near 300 ... in the group #3 9/S. The stations with blend B all fall in the 1 000 to 1 500 m bottom depth ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 161-184 : Автор(ы): Gordon, A.L.

8. Phytoplankton distribution in the mixed layer: implication to krill abundance

   104 Figure 4: Same as Figure 3 with N=O.01 rad S-1. 346 Q) o t) V) .c -0) c ~ Figure ... now stands, is highly complex with many degrees of freedom. The basic concept underlying our ... favorably with observations. Since the Eulerian models inherently deal with averaged spatial distributions ... incorporate these complex trajectories into our experimental designs; and we need to cooperate with physical ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 331–356 : Автор(ы): Yamazaki, H. and T.R. Osborn

9. Sources of variance in studies of krill population genetics

   of krill (Lubimova et al., 1985; Mackintosh, 1972, 1973). Many of these concentrations are ... scale of connectedness of these local populations with those in other areas remains to be explored. В ... population studies Early allozyme research did not identify dis- tinct populations of Antarctic krill ... identifi cation of genetic differentiation in several krill species (Table 1) is consistent with other ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 107–116 : Автор(ы): Jarman, S.N. and S. Nicol

10. Growth and age/length structure of populations of Notothenia (Lepidonotothen) squamifrons (Nototheniidae) in various areas of the Indian sector of the Southern Ocean

    paper. It was found that during the first years of life the linear growth rate is 3 to 5 cm per year. It ... decreases by a maximum of 1 cm during the last years of life. Maximum annual weight increments of 100 to 120 ... specimens has declined (Figure 3). These changes are associated with a concentration in these years of ... (1969-1972) Both sexes 20.1 23.3 26.3 29.1 31.7 34.0 36.2 38.3 40.1 41.9 Aae in years Area Sex 1 2 3 ... years of life the linear growth rate is 3 to 5 cm per year. It decreases by a maximum of 1 cm during ... from 3 to 5 cm per year in the first years of life to 1 cm in the last years, dependent upon the area ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 123–139 : Автор(ы): Zaitsev, A.K.

Страницы