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Data on krill (Euphausia superba Dana) consumption by coastal fishes in Division 58.4.2 (Kosmonavtov and Sodruzhestva Seas)
taking into account their distribution in the particular study area of Antarctica. Total fish stock was ... is 551 300 tonnes, fish will consume 960 000 tonnes of krill. Given the total krill biomass in the ... 58.4.2 (Kosmonavtov and Sodruzhestva Seas) Abstract / Description: Current estimates of the level of ... then been extrapolated over all of Antarctica. According to these calculations the entire amount of ... relationships are used in this work. The mean krill stock size in the Sodruzhestva Sea (to the south of 65°30'S ... the drop in feeding rates (mean index of stomach fullness was from 2.0 to 6.9%) and a switch from E ... ., 1985). Assessments contained in this paper are based on results of research conducted in the ... account their distribution in the particular study area of Antarctica. Total fish stock was calculated ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 305–319 : Автор(ы): Pakhomov, Y.A., V.A. Bibik and V.V. Gerasimchuk
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Fish stock assessment survey in Subarea 48.3
fish survey in the vicinity of South Georgia, CCAMLR Subarea 48.3, is described. Details are given of ... positions of hauls, catch rates and size composition of catches. The standing stock of one of the most ... important commercial species in the area, Champsocephalus gunnari, is shown to have undergone a major ... Paper Title: Fish stock assessment survey in Subarea 48.3 Abstract / Description: A demersal ... Abstract A demersal fish survey in the vicinity of South Georgia, CCAMLR Subarea 48.3, is described ... of one of the most important commercial species in the area, Champsocephalus gunnari, is shown to ... . 1. INTRODUCTION The fish stocks in Subarea 48.3, South Georgia, have been the subject of ... each of these rectangles the numbers of stations within each of these depth strata were allocated in ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 25–67 : Автор(ы): Everson, I., G. Parkes, K.-H. Kock, S. Campbell, Z. Cielniaszek and J. Szlakowski
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Seal mitigation measures on trawl vessels fishing for krill in CCAMLR Subarea 48.3
(WG-EMM) in Siena, Italy, the UK reported on the by-catch of fur seals (Arctocephalus gazella) in the ... avoid fur seal deaths in the fishery. WG-EMM requested that the UK provide further details of the ... Abstract / Description: At the 2004 meeting of the Working Group on Ecosystem Monitoring and Management ... seal entanglements on krill vessels fishing around South Georgia in the 2004 fishing season. The ... -catch of fur seals (Arctocephalus gazella) in the krill fi shery around South Georgia, and on ... Management (WG-EMM) in Siena, Italy, the UK reported on the by-catch of fur seals (Arctocephalus gazella ... deployed to avoid fur seal deaths in the fi shery. WG-EMM requested the UK to provide further details of ... towards an escape opening 0.5 m in diameter in the roof of the net (Figure 4, measure 1). It was ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 195–205 : Автор(ы): Hooper, J., J.M. Clark, C. Charman and D. Agnew
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Modelling variability and estimating power to detect change in Adélie penguin fledgling weights
the number of birds weighed in each five-day period from 50 to 30 without substantial loss of power ... fledgling weights Abstract / Description: Statistical models of variation in Adélie penguin fledgling ... weight data were used to examine the power to detect a change in fledgling weights after an impact. The ... year, but there was no evidence that the rate of decline differed between years. A consequence of this ... ). Estimates of the parameters A and B in equa- tion (2) were employed in equation (3) to estimate mean weight ... change in mean fledgling weight at time x without a change in variability, then the variances of the ... – 1) degrees of freedom. If interest lies in the detection of a change in the expected mean weight ... Abstract Statistical models of variation in Adélie penguin fledgling weight data were used to examine the ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 191–200 : Автор(ы): Emmerson, L.M., C. Southwell and J. Clarke
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Length-at-age in juvenile Patagonian toothfish (Dissostichus eleginoides)
estimated from reading otoliths in a goodness-of-fit test. The majority of the otoliths (83.6%) were ... / Description: We used the otoliths from a sample of Dissostichus eleginoides pre-recruits, whose length ... observed in the length density represent different age cohorts separated by one year. File: 01ashford.pdf ... estimated to be from fish 1+ or 2+ years old, with mean total lengths of 32.5 cm and 41.3 cm respectively ... of the mean length of fi sh spawned the previous July, fi sh estimated as 0+ in January in this ... on length, and compared with ages estimated from reading otoliths in a goodness-of-fi t test. The ... increase in the total catch of the fi shery, better information was urgently required. Reliable ... used in the past to estimate the age of D. eleginoides, it has been demonstrated (Ashford et al ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 1–10 : Автор(ы): Ashford, J., C. Jones, S. Bobko and I. Everson
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Food consumption by predators in a CCAMLR integrated study region
consumption of seabird predators is provided. This model is a development of earlier ones used in the South ... / Description: A detailed description of the structure and mode of operation of a model for estimating food ... provided, illustrating the changes produced by using these new sub-models. Results of initial sensitivity ... analyses indicate particular sensitivity to estimation of metabolic energy requirements. The system is ... seabird predators is provided. This model is a development of earlier ones used in the South Georgia ... The original version of this program was developed in 1982 and 1983 by Dr C. Ricketts at British ... management and licensing strategy for finfish and krill in the South Georgia area. Version 1.0 of the ... variation in the calorific value of all prey items. Version 3.20 The program can allow for seasonal ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 489–519 : Автор(ы): Croxall, J.P., C. Ricketts and A.G. Wood
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1989/1990 stock status and TAC assessment for Patagonotothen brevicauda guntheri in South Georgia subarea (48.3)
. Stock has been assessed at 123.1 thousand tonnes with a TAC of 28.3 thousand tonnes for the initial ... Paper Title: 1989/1990 stock status and TAC assessment for Patagonotothen brevicauda guntheri in ... South Georgia subarea (48.3) Abstract / Description: The 1989/90 stock status and TAC assessments for ... Patagonotothen brevicauda guntheri from the South Georgia subarea (48.3) have been made using biostatistical ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 101–110 : Автор(ы): Shlibanov, V.I.
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1989/90 stock status and TAC assessment for Champsocephalus gunnari in Subarea 48.3 (South Georgia)
gunnari in South Georgia Subarea (48.3) has been made using the biostatistic material for 1982/83 to 1987 ... ) using standardized fishing effort. For the beginning of the 1989/90 fishing season, the stock was ... Paper Title: 1989/90 stock status and TAC assessment for Champsocephalus gunnari in Subarea 48.3 ... (South Georgia) Abstract / Description: The 1989/90 stock status and TAC assessment for Champsocephalus ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 15–27 : Автор(ы): Frolkina, Zh.A. and P. Gasyukov
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Catch per unit effort and proportional recruitment indices from Japanese krill fishery data in Subarea 48.1
period. The use of different fishing strategies in response to a demand for higher product quality and a ... . CPUE (catch/towing volume) in the Livingston Island area showed a decreasing trend during the study ... general decrease in krill density in the study area were considered as possible reasons for this. On the ... other hand, CPUE in the Elephant Island area showed greater interannual variation without any trend ... period. The use of different fishing strategies in response to a demand for higher product quality and a ... recruitment of krill in the Elephant Island area was presented by Siegel and Loeb (1995). A preliminary ... combined. That is: where Ai is the number of animals in age class i, and n is the age of the oldest age ... class in the stock (de la Mare, 1994). Length of age 2+ groups were identified according to the length ...
Science Journal Paper : CCAMLR Science, Volume 4 (CCAMLR Science, Volume 4) : 47–63 : Автор(ы): Kawaguchi, S., T. Ichii and M. Naganobu
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Possible effects of different levels of krill fishing on predators – some initial modelling attempts
CCAMLR Ecosystem Monitoring Program (WG-CEMP) in 1992, in order to investigate the possible effects of ... that variability in the annual recruitment of krill results in predator populations being less ... some krill predator populations, and on the possibility of biases in their estimation. These matters ... will need to be taken into account in future developments of this approach, before the latter can claim ... rate is taken (in the first instance) to be equal to the estimate of mean adult survival rate ... ) in 1992, in order to investigate the possible effects of krill fishing on krill predators. First ... remaining fixed a t a single value as in deterministic models, because of the variability in the ... decrease to the size of the resultant drop in predator numbers. The first section of the paper ...
Science Journal Paper : CCAMLR Science, Volume 2 (CCAMLR Science, Volume 2) : 79–97 : Автор(ы): Butterworth, D.S. and R.B. Thomson
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