Résultats de la recherche
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A possible framework in which to consider plausible models of the Antarctic marine ecosystem for evaluating krill management procedures
paper is concerned with conceptualising an element of the ecosystem to account for the varying qualities ... ecosystem for evaluating krill management procedures Abstract / Description: CCAMLR is developing a ... management procedure for the krill fishery, including the evaluation of candidate management procedures in a ... framework for erecting such models. It discusses the general model requirements and presents a conceptual ... Campbell Davies, Steve Nicol, Beth Fulton and an anonymous reviewer for thoroughly commenting on the ... conceptualising an element of the ecosystem to account for the varying qualities of data and knowledge and for ... of an ecosystem-based management pro- cedure for krill (CCAMLR, 2001). This has entailed the ... model relationships. The fi rst stage in developing an ecosystem model for evaluating management ...
Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 99–117 : Auteur(s): Constable, A.J
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Reproductive performance of seabirds and seals at South Georgia and Signy Island, South Orkney Islands, 1976-1987: implications for Southern Ocean monitoring studies
, South Orkney Islands, 1976-1987: implications for Southern Ocean monitoring studies Abstract ... and for Adélie and chinstrap penguins at Signy Island, South Orkney Islands, are summarised and ... synchronised with those at South Georgia; they correlate best (especially for chinstraps, which suffered badly ... albatross, penguin and fur seal biology are reviewed in terms of their sensitivity and suitability for ... -1987 : IMPLICATIONS FOR SOUTHERN OCEAN MONITORING STUDIES* J.P. Croxall, T.S. McCann, P.A. Prince ... Antarctic FUr Seals, at Bird Island, South Georgia and for Adelie and Chinstrap Penguins at Signy Island ... correlate best (especially for Chinstraps, which suffered badly in 1980-81 and 1982-83) with the date of ... reviewed in terms of their sensitivity and suitability for detecting changes in the marine environment ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 445-447 : Auteur(s): Croxall, J.P., T.S. McCann, P.A. Prince and P. Rothery
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Selectivity parameters for Notothenia gibberifrons Lönnberg, 1905 and Champsocephalus gunnari Lönnberg, 1905 obtained during “8611 ANTARCTICA [ANTARTIDA]” expedition
Paper Title: Selectivity parameters for Notothenia gibberifrons Lönnberg, 1905 and ... / Description: Mesh selectivity experiments for several finfish species were conducted during the Spanish ... obtained for Notothenia gibberifrons and Champsocephalus gunnari. Selection factors calculated following ... different methods with a codend mesh of 68 mm were 2.87 for Notothenia gibberifrons and 3.10 for ... 10 12 1~ 16 18 20 22 2~ 26 28 30 32 ~ 36 38 telle (cm) + punto. reole. Figura 2: Curvas de ... "EALES 8 10 12 14 16 1 e 20 22 24 26 28 30 32 34 36 38 talla (cm) + puntoe real.e Figura 4: Curvas ... Charnpsocephalus gu.nnari SHETlAND - PUNTOS REALES 4 . 6 e '0 , 2 '4 18 1 e 20 22 2. 26 2e .30 32 ~ tollo (cm ... , 1980. Working Party on Antarctic Fish Biology, Recommended Methods for Standardization of Measurements ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part II) : 87-105 : Auteur(s): Balguerías, E.
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1989/1990 stock status and TAC assessment for Patagonotothen brevicauda guntheri in South Georgia subarea (48.3)
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 ... material for 1978/79 through 1988/89 collected by Soviet scientists. VPA tuning has been accomplished using ... the regression equation between fishing mortality and standardized fishing effort for each age-class ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 101–110 : Auteur(s): Shlibanov, V.I.
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1989/90 stock status and TAC assessment for Champsocephalus gunnari in Subarea 48.3 (South Georgia)
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 ... 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 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 15–27 : Auteur(s): Frolkina, Zh.A. and P. Gasyukov
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Status of krill target strength
-animal measurements of target strength for live euphausiids and euphausiid-related species, made under ... on both animal size and transmit frequency, notwithstanding admitted shortcomings. Some recent single ... recommendations are made for future, improved determinations of krill target strength. Based on the comparisons ... Paper Title: Status of krill target strength Abstract / Description: Empirical estimates for the ... kHz. The difference in target strength at the two frequencies is the same for the measurements on ... assuming specific sets of physical and orientational parameters, for which there is an empirical basis ... the scattering from individuals. Accordingly, the state of an animal is defined by a unique ... , however, allows extraction of a total of two values each for daytime and night-time TS. Artemov (1983 ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/9 (Selected Scientific Papers, SC-CAMLR-SSP/9) : 101–126 : Auteur(s): Foote, K.G., D. Chu and T.K. Stanton
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Target strengths of Antarctic krill (Euphausia superba)
of an underwater television camera and programmable videotape units for the display, recording and ... over a 42-hour period. In another case, Event number 20, the number increased by two specimens ... aslant as viewed from the transducer. For the particular "20 log r" TVG used throughout the measurements ... 'subtraction' method, while remaining unchanged for the 'regression' method. The rms length for the two ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I (Selected Scientific Papers, SC-CAMLR-SSP/5 – Part I) : 265–279 : Auteur(s): Everson, I., D.G. Bone, J.L. Watkins and K.G. Foote
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Archival and satellite-linked data recorders
provides an overview of currently-available data recorders for use in research on marine animals. These ... recorders are deployed on freely swimming animals and gather data on aspects of an animal’'s diving ... behaviour. The records can be recovered in one of two ways: the data recorder must either be recovered ... Recorders, wherein the instrument is attached to an animal and data recovery and/or geolocation are ... data (.e.g. depth, temperature) about an animal of interest and stores these data until the animal ... potential for - 481 - geolocation of the animal. The details of the ARGOS system and the transmission ... of interrupted transmissions is increased. This may make such transmissions from an animal in the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 475-493 : Auteur(s): Hill, R.D.
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Precautionary spatial protection to facilitate the scientific study of habitats and communities under ice shelves in the context of recent, rapid, regional climate change
existing ice shelves in Subareas 88.3, 48.1 and 48.5 should be preserved and protected for scientific study ... collapse in the future. Designation of areas under ice shelves as areas for scientific study would fulfil ... constructive comments and to Alex Rogers, Stefan Hain, Dave Barnes and Paul Holland for helpful advice on an ... . Fleming, BAS, pers. comm.), so the frequency of revision is an opera- tional question for CCAMLR. The ... elapsed; however, it may also be appropriate for an area where an ice-shelf retreat or collapse has ... Larsen B followed a series of warm summers on the Antarctic Peninsula, which culminated in an ...
Science Journal Paper : CCAMLR Science, Volume 20 (CCAMLR Science, Volume 20) : 139–151 : Auteur(s): Trathan, P.N., S.M. Grant, V. Siegel and K.-H. Kock
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Antarctic krill and ecosystem management – from Seattle to Siena
(2002 – this volume), with the three papers documenting developments during CCAMLR’s first 20 years of ... / Description: This paper outlines CCAMLR’s development of a management approach for the Antarctic krill ... approach developed in order to calculate a precautionary catch limit for the krill fishery in various ... to be consistent with the objectives of the CAMLR Convention, particularly its Article II. Emphasis ... sought an intermediate position between these two extremes to account for shorter-term interests of ... exploitation, over a 20-year period of harvesting, should be equal to 10%’. This approach required an ... which infl uenced CCAMLR’s efforts to develop an ecosystem-based management regime for the Antarctic ... a 20-year period (where Y = yield and B0 = unexploited biomass). Because the model is run many ...
Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 175–212 : Auteur(s): Miller, D.G.M