Résultats de la recherche

1. Summer survey of fur seals at Prince Edward Island, southern Indian Ocean

   11.4% per year from 2001. With an estimated 810 pups, the Antarctic fur seal is still in the rapid ... 9.3% per year between 1987/1988 and 2001/2002, and the population is in the mature phase of population ... intrinsic rate of natural increase has declined to –0.3% per year over the last seven years, compared to the ... gazella and Subantarctic fur seals A. tropicalis were determined at Prince Edward Island during 16–20 ...

   Meeting Document : WG-EMM-10/P15 : Auteur(s): M.N. Bester, P.G. Ryan and J. Visagie

2. Line weights of constant mass (and sink rates) for Spanish system Patagonian toothfish longline vessels

   with seabirds. The weights typically used are collections of rocks enclosed in netting bags. During ... the option of substituting steel weights for rock weights while remaining in compliance with the sink ... loss by toothed whales) were tested in the experiment. Spanish-system longlines with 8 kg rock weights ... from 0.68 m s –1 (4 kg rocks) to 1.31 m s –1 (8 kg steel) in the shallow depth ranges. Hydrodynamically ... regime arose from Agnew et al. (2000) who showed a reduction in mortality of black-browed albatrosses ... comprise collections of rocks held in bun- dles by netting bags stitched together from trawler net. This ... hook line are tied together to form a continuous line, and weights are tied to the join in the centre ... collections of rocks enclosed in netting bags. During fishing operations the netting bags abrade on the ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 93–106 : Auteur(s): Robertson, G., C.A. Moreno, E. Gutiérrez, S.G. Candy, E.F. Melvin and J.P. Seco Pon

3. An integrated stock assessment for the Patagonian toothfish (Dissostichus eleginoides) for the Heard and McDonald Islands using CASAL

   Division 58.5.2), using CASAL and data consisting of multi-year random stratified trawl survey (RSTS ... representative of the main plateau, where juvenile fish are found, but are of relatively low intensity in effort ... compared to the commercial shots. In contrast, the commercial shots are very restricted in space ... , consisting of three main grounds. The model implemented in CASAL is a simple, single-sex, single-area ... , 2007b, paragraph 4.6(ii)) noted that the CV in year-class strength (YCS – number of annual age-1 ... with M kept fixed at 0.13 year–1 as recommended in SC-CAMLR (2006). The maximum age was set to 35 ... survey represents only a small frac- tion of fishing effort in any year. A double-normal plateau (DNP ... in the fishing method, ground, fishing year and season were replaced with an estimated ESS. The ...

   Science Journal Paper : CCAMLR Science, Volume 15 (CCAMLR Science, Volume 15) : 1–34 : Auteur(s): Candy, S.G and A.J. Constable

4. e-sc-xxviii-a10.pdf

   ... been observed 20 or 30 years post impact (Clark et al., in press). 3.10 The Workshop agreed that ... not occur over a time scale of 20–30 years. Therefore, where estimates of maximum longevity for the ... the extent possible. WG-EMM-09/8 reported that 30 VME indicator notifications were made in ... members of the taxon were available, they were scaled as Low (<10 years), Medium (10–30 years) and High application/pdf attached to:WS-VME-09

   Meeting Report : WS-VME-09

5. WG-FSA-90

   haul of Notothenia gibberifrons in commercial semipelagic trawls in the years 1987 and 1988 E.R ... An assessment of Chaenocephalus aceratus and Pseudochaenichthys georgianus in Subarea 48.3 D.J. Agnew ... . Everson and S. Campbell (United Kingdom) WG-FSA-90/08 Areas of seabed within selected depth ranges in ... electrophoretic variation and stock structure in the mackerel icefish, Champsocephalus gunnari, South Georgia ...

   Meeting

6. Antarctic icefishes (Channichthyidae) – a unique family of fishes – a review

   Abstract:  Icefish are a family of species unique among vertebrates in that they possess no ... haemoglobin. With the exception of one species, icefish live only in the cold – stable and oxygen – rich ... environment of the Southern Ocean. It is still questionable how old icefish are in evolutionary terms: they ... they are 15 – 20 Ma old and started to evolve some time after the formation of the Antarctic ...

   Meeting Document : WG-FSA-04/10 : Auteur(s): K.-H. Kock (Germany)

7. Fishery Report 2017: Dissostichus eleginoides South Georgia (Subarea 48.3)

   represented by the year in which that season ended, e.g. 2015 represents the 2014/15 CCAMLR fishing season ... fish measured (n) in each year are given at the top of each panel. Letters to the left of the panel ... in Appendix 1). 20. The stock of D. eleginoides in Subarea 48.3 was assessed using an age ... 30 2017 15 37. Over the last 10 years, four mammal mortalities associated with longline ...

   Document : Site Section: Publications

8. Fishery Report 2017: Dissostichus mawsoni (Subarea 88.3)

   Dissostichus mawsoni in Subarea 88.3. Year Tagging and release Recapture 2005 8 0 2011 30 0 2012 93 0 ... season is represented by the year in which that season ended, e.g. 2015 represents the 2014/15 CCAMLR ... ). Table 1: Catch (kg) of Dissostichus mawsoni and D. eleginoides in Subarea 88.3. Year D. mawsoni D ... led the Republic of Korea to propose a multi-year research plan for Subarea 88.3 starting in 2016 ...

   Document : Site Section: Publications

9. Disentangling the influence of three major threats on the demography of an albatross community

   threats on the demography of seabird communities is vital for evidence-based conservation. Using 20 years ... ) at subantarctic Macquarie Island, we quantified the temporal variability in survival, breeding ... probability and success. In three species (excluding the wandering albatross because of the small population ... Southern Annular Mode (SAM) explained 22.9-40.9% and 22.2-33.4% of the temporal variability in survival and ...

   Meeting Document : WG-FSA-2019/34 : Auteur(s): J.B. Cleeland, D. Pardo, B. Raymond, G.N. Tuck, C.R. McMahon, R.A. Phillips, R. Alderman, M.-A. Lea and M.A. Hindell

10. Long-term observations from Antarctica demonstrate that mismatched scales of fisheries management and predator–prey interaction lead to erroneous conclusions about precaution

    hierarchical model and 30+ years of monitoring data, we show that expected penguin performance was reduced when ... are as precautionary as presumed. Antarctic krill are targeted by the largest fishery in the Southern ... local harvest rates of krill were ≥ 0.1, and this effect was similar in magnitude to that of poor ...

    Meeting Document : WG-EMM-2019/11 : Auteur(s): G.M. Watters, J.T. Hinke and C.S. Reiss

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