Resultados de la búsqueda
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An overview of Southern Ocean zooplankton data: abundance, biomass, feeding and functional relationships (submitted to the 2008 Joint CCAMLR-IWC Workshop)
Paper Title: An overview of Southern Ocean zooplankton data: abundance, biomass, feeding and ... an enormous amount of data on Southern Ocean (SO) zooplankton, mostly on their distribution with a ... assist SO food-web modellers or those with limited specialist knowledge of SO zooplankton. First, a brief ... overview is provided of the diversity and basic biology of SO zooplankton, with an emphasis on abundance ... temperature discontinuities arise, primarily at frontal zones of major water mass boundaries. Thus, E ... al., 2001). In years of low E. superba availability at South Georgia, they can act as an alternative ... . Interestingly, stable isotopic analyses place adults of this species at a similar level to mainly herbivorous ... is an example of the utility of using multiple feeding methods to arrive at consensus over diet ...
Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 171–218 : Autor(es): A. Atkinson, P. Ward, B.P.V. Hunt, E.A. Pakhomov and G.W. Hosie
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Analysis of albatross and petrel distribution within the CCAMLR Convention Area: results from the Global Procellariiform Tracking Database
Paper Title: Analysis of albatross and petrel distribution within the CCAMLR Convention Area ... successful measures to reduce the incidental mortality of seabirds in most of the fisheries within its ... jurisdiction, and has done so through area-specific risk assessments linked to mandatory use of measures to ... reduce or eliminate incidental mortality, as well as through measures aimed at reducing illegal ... global threat of extinction. Although albatross and petrel species face a number of threats at their ... susceptibility to changes in these. In terms of studies aimed at revealing their at-sea distribution ... , albatrosses and petrels are not only the object of at-sea observation data (e.g. White et al., 2001; Woehler ... Acknowledgements. At the 2004 meeting of CCAMLR’s ad hoc Working Group on Incidental Mortality Associated with ...
Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 143–174 : Autor(es): BirdLife International (prepared by C. Small and F. Taylor)
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Age and growth of spiny icefish (Chaenodraco wilsoni Regan, 1914) off Joinville–D’Urville Islands (Antarctic Peninsula)
Paper Title: Age and growth of spiny icefish (Chaenodraco wilsoni Regan, 1914) off Joinville ... –D’Urville Islands (Antarctic Peninsula) Abstract / Description: Age and growth of spiny icefish ... (Chaenodraco wilsoni) were investigated using counts of annual growth increments from sagittal otoliths ... Islands (Antarctic Peninsula) in February–March 2006 and January 2007. A total of 218 specimens were ... –D’Urville Islands Introduction The fishing grounds off Joinville–D’Urville Islands at the tip of the ... –D’Urville Islands at the tip of the Antarctic Peninsula. The location of fishing sta- tions is provided in ... other channichthyids. Gonad maturity of fish was used to estimate the age at which 50% of the ... population reaches sexual maturity (A50). For each sex, the proportion-at-age (P) of fish in gonad maturity ...
Science Journal Paper : CCAMLR Science, Volume 16 (CCAMLR Science, Volume 16) : 115–130 : Autor(es): La Mesa, M., A. De Felice, C.D. Jones, K.-H. Kock
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An assessment of the exploratory fishery for Dissostichus spp. on BANZARE Bank (CCAMLR Division 58.4.3b) based on fine-scale catch and effort data
of toothfish at the scale of individual fishing grounds in the 2004/05 and 2005/06 seasons. This ... Paper Title: An assessment of the exploratory fishery for Dissostichus spp. on BANZARE Bank ... CCAMLR Scientific Committee expressed concern as to the status of the stock on which the exploratory ... Dissostichus spp. fishery on BANZARE Bank (CCAMLR Division 58.4.3b) was based. This paper presents a summary of ... for depletion of toothfish at the scale of individual fishing grounds in the 2004/05 and 2005/06 ... tagged toothfish in other fisheries suggesting that movement at a temporal scale of a few months is ... construct 1 000 bootstrap estimates of parameter values. By considering bootstrap distributions at α/2 and ... of vessels individual Flag States can have fishing in the division to one at a time, does not ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 55–78 : Autor(es): McKinlay, J.P., D.C. Welsford, A.J. Constable and G.B. Nowara
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Line weights of constant mass (and sink rates) for Spanish system Patagonian toothfish longline vessels
Paper Title: Line weights of constant mass (and sink rates) for Spanish system Patagonian ... -system longline vessels to attach 8.5 kg weights at 40 m intervals on longlines to minimise interactions ... with seabirds. The weights typically used are collections of rocks enclosed in netting bags. During ... become progressively lighter, requiring ongoing repair. This problem can be solved by use of ... and at each end of the basket. As lines are payed out, crew con- nect the hauling and hook lines with ... Spanish system, at the end of each set of 10 replicates, 200 m of connecting line were deployed to ... , Wildlife Computer, USA) programmed to record depth at 0.5 m resolu- tion every second. A total of 60 TDRs ... -system longline vessels attached midway between line weights at the aft end of the second of the three ...
Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 93–106 : Autor(es): Robertson, G., C.A. Moreno, E. Gutiérrez, S.G. Candy, E.F. Melvin and J.P. Seco Pon
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The ecosystem approach to managing fisheries: achieving conservation objectives for predators of fished species
predators of fished species Abstract / Description: Managing fisheries to achieve ecosystem objectives is ... for the recovery of depleted populations in food webs supporting fisheries. This paper addresses the ... of fished species, and (iii) what approaches could be considered for achieving the conservation ... objectives? The approach proposed here takes account of uncertainties in knowledge of the structure of ... a basis for future testing of a variety of candidate management procedures ainied at managing the ... availability, (ii) the effects of the fishery on the availability of krill to predators at critical times of ... needs of predators and support the fishery at the same time. In this case, competition would be ... maintain the predator production arising from the consumptioii of fished species at or above some limit ...
Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 37–64 : Autor(es): Constable, A.J
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Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longlines
aimed at providing two indirect methods of assessment of depredated biomass over an 11-year period (2003 ... Paper Title: Comparison of two methods to assess fish losses due to depredation by killer whales ... interaction over access to resources, which often includes a combination of socio-economic, ecological and ... conservation issues. However, estimating the amount of resource depredated can be especially challenging when ... (southern Indian Ocean). This study aimed at providing two indirect methods of assessment of depredated ... 0.2° cells, including only cells with at least four longlines and a proportion of grena- diers ... much as in early years, and thus the number of vessels operating at the same time lowered. This means ... (a) and correlation coefficient (R2) are provided at the top left. The size of circles indicates the ...
Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 1–14 : Autor(es): Gasco, N., P. Tixier, G. Duhamel and C. Guinet
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Distribution of the Soviet krill fishing fleet in the South Orkneys area (Subarea 48.2) during 1989/90
aggregations. A maximum CPUE (3.8 tonnes/hour) was recorded at the beginning of the period, with a subsequent ... Paper Title: Distribution of the Soviet krill fishing fleet in the South Orkneys area (Subarea ... 48.2) during 1989/90 Abstract / Description: The results of an analysis of haul-by-haul catch ... statistics from the Soviet krill fishing fleet during the 1989/90 season (sample of 3 614 hauls for the ... area, including haul-by-haul data (i.e. the date, coordinates at trawling start, time of trawling ... vessels) aimed at finding and determining the location and depth of krill swarms. After completing an ... fishing fleet (Figure la). Such a situation is characteristic of other seasons, and at a coarse scale ... location near the northern tip of Coronation Island. At the beginning of November catches were ...
Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 51–62 : Autor(es): Sushin, V.A
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Age and growth of Antarctic euphausiacea (crustacea) under natural conditions
Paper Title: Age and growth of Antarctic euphausiacea (crustacea) under natural conditions ... Abstract / Description: Five species of Antarctic euphausiid crustaceans were studied from the Antarctic ... regressions. No difference in growth of krill was observed between the Antarctic Peninsula area and the ... shorter life span than females, while their growth rate is similar. A short description of the life cycle ... generation time of each species is given. In general, Antarctic euphausiids seem to remature and spawn at ... - 369 - SC-CAMLR-VI/BG/24 AGE AND GRcwrH OF ANTARCTIC ... EUPHAUSIACEA (CRUSTACEA) UNDER NATURAL CONDITIONS* V. siegel1 (Federal Republic of Germany) Abstract ... Five species of Antarctic euphausiid crustaceans were studied from the Antarctic Peninsula and the ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 369-370 : Autor(es): Siegel, V.
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Effects of different harvesting strategies on the mackerel icefish Champsocephalus gunnari around South Georgia
were: different levels of constant fishing mortality (F 0.1, F max, 2xF max); harvesting constantly at ... strategy at present. The establishment of a regular recruit survey would offer the possibility of adjusting ... Paper Title: Effects of different harvesting strategies on the mackerel icefish Champsocephalus ... gunnari around South Georgia Abstract / Description: The effects of a number of harvesting strategies on ...
Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 77–100 : Autor(es): Köster, F.W. and K.-H. Kock