Результаты поиска

1. The fishery for Patagonotothen brevicauda guntheri in CCAMLR Subarea 48.3

   Paper Title:  The fishery for Patagonotothen brevicauda guntheri in CCAMLR Subarea 48.3 Abstract ... / Description:  Fine-scale data supplied to CCAMLR for 1987/88 showed that the catches of P atagonotothen ... brevicauda guntheri were five times greater in the South Georgia area than at Shag Rocks. Previous survey ... data and reports to the CCAMLR Working Group on Fish Stock Assessment indicated that this species was ... no reports of P.b. guntheri being taken as by-catch in the krill fishery. 3. DISTRIBUTION OF ... WG-FSA-90/12 THE FISHERY FOR PATAGONOTOTHEN BREVICAUDA ... CCAMLR for 1987/88 showed that the catches of Patagonotothen brevicauda guntheri were five times greater ... in the South Georgia area than at Shag Rocks. Previous survey data and reports to the CCAMLR Working ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 275–283 : Автор(ы): Everson, I. and C. Mitchell

2. Investigation of bias in the mark–recapture estimate of toothfish population size at South Georgia

   Paper Title:  Investigation of bias in the mark–recapture estimate of toothfish population size at ... South Georgia Abstract / Description:  This paper investigates the influence of mixing of fish, and the ... uneven distribution of tag placements and recapture effort, on bias in the Petersen estimator of ... population size. It does so by constructing a spatial model of the South Georgia toothfish fishery ... , regardless of where they were. No other mortality factors were included in the model, not even the antici ... InvestIgatIon of bIas In the mark–recapture estImate of toothfIsh populatIon sIze at south georgIa D.J. Agnew ... Abstract This paper investigates the influence of mixing of fish, and the uneven distribution of tag ... placements and recapture effort, on bias in the Petersen estimator of population size. It does so by ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 47–63 : Автор(ы): Agnew, D.J., G.P. Kirkwood, J. Pearce and J. Clark

3. Estimating optimal observer coverage in the Antarctic krill fishery

   Paper Title:  Estimating optimal observer coverage in the Antarctic krill fishery Abstract ... / Description:  Data collected as part of the CCAMLR Scheme of International Scientific Observation from ... components analysis (VCA) to determine the relationship between observer coverage and our ability to reliably ... estimate parameters of interest, in this case the mean (or median) krill length and the rate of larval fish ... Estimating optimal obsErvEr covEragE in thE antarctic krill fishEry D.J. Agnew1, P. Grove2, T. Peatman1 ... Abstract Data collected as part of the CCAMLR Scheme of International Scientific Observation from ... components analysis (VCA) to determine the relationship between observer coverage and our ability to ... reliably estimate parameters of interest, in this case the mean (or median) krill length and the rate of ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 139–154 : Автор(ы): Agnew, D.J., P. Grove, T. Peatman, R. Burn and C.T.T. Edwards

4. CPUEs, body length and greenness of Antarctic krill during 1987/88 season in the fishing ground north of Livingston Island

   Paper Title:  CPUEs, body length and greenness of Antarctic krill during 1987/88 season in the ... there was a marked change in two kinds of CPUEs, body length and greenness of krill during the fishing ... season, these parameters were examined for each 10-day period of the Japanese krill fishery in the ... northern waters of Livingston Island in the 1987/88 season. It appears that Japanese trawlers have not ... March, the major fishing ground moved to the waters west of Elephant Island. There was no significant ... area moved as a whole and assume no advection from adjacent areas, approximately 7% of the biomass was ... ANTARCTIC KRILL DURING 1987/88 SEASON IN THE FISHING GROUND NORTH OF LlVINGSTON ISLAND Y. Endo and T ... , body length and greenness of krill during the fishing season, these parameters were examined for each ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 323–338 : Автор(ы): Endo, Y. and T. Ichii

5. Fishing ground selection in the Antarctic krill fishery: trends in patterns across years, seasons and nations

   Paper Title:  Fishing ground selection in the Antarctic krill fishery: trends in patterns across ... characterised using STATLANT and CCAMLR fine-scale data. Among the 15 small-scale management units (SSMUs ... ) within Subareas 48.1, 48.2 and 48.3, including the pelagic SSMUs, only one-third were identified as major ... contributors to the total catch. A recent shift in operational timing towards later months within fishing ... negligible catch in 1999). Except for 1988, almost no catches were reported from the pelagic area in ... mainly during summer to autumn. Almost no catch was made from Subarea 48.1 except in autumn 1990. The ... fishery in Area 48 could be divided into two sub-periods. The first period is 1980–1989, when no fishing ... -free dur- ing winter with no fishing operations. Also, if the fishing operations of individual nations ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 117–141 : Автор(ы): Kawaguchi, S., S. Nicol, K. Taki and M. Naganobu

6. Precautionary measures for a new fishery on Martialia hyadesi (Cephalopoda, Ommastrephidae) in the Scotia Sea: an ecological approach

   , Ommastrephidae) in the Scotia Sea: an ecological approach Abstract / Description:  In anticipation of the ... development of a new fishery for the ommastrephid squid Martialia hyadesi in the Scotia Sea, this paper ... presents a revision of annual consumption of the species by higher predators and provides a brief review of ... information about the life cycle and distribution of the species obtained from research fishing and commercial ... ommastrephid squid, is semelparous. There are no data on the second year of the life cycle and little or no ... whales. There are no data on diet of long-finned pilot whales in the Antarctic but elsewhere they are ... harvested in accordance with Article 11 because there is no way of estimating the proportional escapement ... , including the egg stage. However, no squid more than one year old have been examined so, until more data ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 125–139 : Автор(ы): Rodhouse, P.G

7. An assessment of the mackerel icefish (Champsocephalus gunnari) off Heard Island

   Paper Title:  An assessment of the mackerel icefish (Champsocephalus gunnari) off Heard Island ... Abstract / Description:  Assessments of the abundance and potential yield of the mackerel icefish ... (Champsocephalus gunnari) populations at Heard Island are developed from the results of four scientific surveys ... conducted in 1990, 1992, 1993 and 1997. The assessments include estimates of all the parameters required ... Heard Island. Figure 2 shows no apparent relationship between the numbers of recruits on the plateau ... though virtually no pre-spawning 2-year-old fish were taken with this gear in 1997, the proportion of ... of 'small fish' was difficult. The general yield assessments below show that there is no ... is to calculate the fishing mortality which would result in a probability of no more than 0.05 that ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 79–101 : Автор(ы): de la Mare, W.K., R. Williams and A.J. Constable

8. Towards the development of a management plan for mackerel icefish (Champsocephalus gunnari) in Subarea 48.3

   Paper Title:  Towards the development of a management plan for mackerel icefish (Champsocephalus ... gunnari) in Subarea 48.3 Abstract / Description:  Management of the mackerel icefish (Champsocephalus ... gunnari) at South Georgia is complicated by the likelihood of substantial periodic variations in natural ... outlines a scheme which would use information from studies on krill and predators undertaken as part of the ... years 1978 and 1984 there are no survey estimates from which one could derive estimates of M, but the ... , there also appears to be a decline the previous year. There is no indication of a major decline in ... situation where even under conditions of no exploitation the population often drops to less than 20% of ... CCAMLR Science, Vol. 5 (1998): 63-77 TOWARDS THE ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 63–77 : Автор(ы): Agnew, D.J., I. Everson, G.P. Kirkwood and G.B. Parkes

9. Long-term monitoring of krill recruitment and abundance indices in the Elephant Island area (Antarctic Peninsula)

   Paper Title:  Long-term monitoring of krill recruitment and abundance indices in the Elephant ... for the Elephant Island area with regard to the representativeness of the study area (60°-62 o 30´S ... were re-calculated applying the delta distribution approach introduced by de la Mare (1994a). The high ... interannual variability of krill recruitment is confirmed by the present analysis. Results are compared for ... certainly no problem for postlarval krill. (iii) Estimating the proportions of the distribution mixture ... the statistical package S-Plus. The null hypothesis that there is no difference between years is ... assumption that there has been no persistent change in krill density should be tempered with the caution ... MONITORING OF KRILL RECRUITMENT AND ABUNDANCE INDICES IN THE ELEPHANT ISLAND AREA (ANTARCTIC PENINSULA) V ...

   Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 19–35 : Автор(ы): Siegel, V., W. de la Mare and V. Loeb

10. Measurements of differences in the target strength of Antarctic krill (Euphausia superba) swarms at 38 kHz and 120 kHz

    Paper Title:  Measurements of differences in the target strength of Antarctic krill (Euphausia ... superba) swarms at 38 kHz and 120 kHz Abstract / Description:  Differences in the target strength of adult ... differences in the mean back-scattering strength of swarms simultaneously insonified at these two frequencies ... in studies off the South Orkneys and Elephant Island in March 1990. Back-scattering strengths at 120 ... 100 m over an interval in which no krill were evident on either sounder in the upper 100 m, to check ... as a source of error. Similarly, there was no noticeable difference in L\ MSBS when the frequencies ... WG-KRILL-90/28 MEASUREMENTS OF DIFFERENCES IN THE ... * * Abstract Differences in the target strength of adult (36 to 60 mm) Antarctic krill (Euphausia superba ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 75–86 : Автор(ы): Hampton, I.

Страницы