Résultats de la recherche

1. Seasonal and interannual variation in foraging range and habitat of macaroni penguins Eudyptes chrysolophus at South Georgia

   penguin Eudyptes chrysolophus at Bird Island, South Georgia, throughout the breeding seasons of 1999 to ... Abstract:  In marine ecosystems, characterisation of the foraging areas and habitats of predators ... is a key factor in interpreting their ecological role. We studied the foraging areas of the macaroni ... between different stages of the breeding season, between sexes, between years and between individuals ...

   Meeting Document : WG-EMM-02/21 Text : Auteur(s): K.E. Barlow and J.P. Croxall (United Kingdom)

2. Seasonal and interannual variation in foraging range and habitat of macaroni penguins at South Georgia

   penguins at Bird Island, South Georgia, throughout the breeding seasons of 1999-2001 using satellite ... interannual variation in foraging range and habitat of macaroni penguins at South Georgia Approval:  Approved ... Abstract:  In marine ecosystems, characterisation of the foraging areas and habitats of predators ... is a key factor in interpreting their ecological role. We studied the foraging areas of macaroni ...

   Meeting Document : WG-EMM-01/19 : Auteur(s): K.E. Barlow and J.P. Croxall (United Kingdom)

3. Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in Australian sub-Antarctic trawl fisheries

   Paper Title:  Age, growth and size at sexual maturity of Macrourus carinatus caught as by-catch in ... Australian sub-Antarctic trawl fisheries Abstract / Description:  Estimates of age and growth were obtained ... McDonald Islands (Division 58.5.2) in 1992 and 1993. The range of estimated ages was 4 to 25 years. There ... growth parameters for both sexes combined were: L ∞ = 690 mm, K = 0.069 and t 0 =-2.4. The size at sexual ... . 10 (2003): 139–151 139 AGE, GROWTH AND SIZE AT SEXUAL MATURITY OF MACROURUS CARINATUS CAUGHT AS ... sexes combined were: L∞ = 690 mm, K = 0.069 and t0 = -2.4. The size at sexual maturity of M ... Age, growth and size at sexual maturity of M. carinatus Specimens were binned into 50 mm size classes ... values of L50 and Lm50 estimated. L50 is defi ned as the length at which 50% of the fi sh population ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 139–151 : Auteur(s): van Wijk, E.M., R. Williams and A.J. Constable

4. The biology, ecology and development of fishery management advice for the anomuran crabs at South Georgia (CCAMLR Subarea 48.3)

   available information on the biology and ecology of the lithodids at South Georgia and provides an overview ... gaps in our knowledge of the biology, ecology and demography of the lithodid species at South Georgia ... Paper Title:  The biology, ecology and development of fishery management advice for the anomuran ... crabs at South Georgia (CCAMLR Subarea 48.3) Abstract / Description:  This review summarises the ... available information on the biology and ecology of the lithodids at South Georgia and provides an overview ... . Considerable gaps in our knowledge of the biology, ecology and demography of the lithodid species at South ... of data relating to lithodid crab biology and ecology at South Georgia has been obtained from a ... summarises the available infor- mation relating to the biology and ecology of the lithodids at South Georgia ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 1–15 : Auteur(s): Belchier, M., T. Peatman and J. Brown

5. Estimation of natural mortality using catch-at-age and aged mark-recapture data: a multi-cohort simulation study comparing estimation for a model based on the Baranov equations versus a new mortality equation.

   Paper Title:  Estimation of natural mortality using catch-at-age and aged mark-recapture data: a ... , using multiple cohorts and multiple years of catch-at-age and aged mark-recapture data was tested using ... number of recaptures-at-age and model the population numbersat- age by annual difference equations ... of 500 000. Simulations which passed catch-at-age numbers to the estimation algorithm after ... Science, Vol. 18 (2011): 1–27 Estimation of natural mortality using CatCh-at-agE and agEd mark ... multiple cohorts and multiple years of catch-at-age and aged mark-recapture data was tested using ... number of recaptures-at-age and model the population numbers- at-age by annual difference equations ... size and the age-at-maturity ogive. Hence, obtaining as accurate an estimate of M as possi- ble, along ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 1–27 : Auteur(s): Candy, S.G.

6. Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni) in the Ross Sea

   Paper Title:  Length- and age-at-spawning of Antarctic toothfish (Dissostichus mawsoni) in the ... of D. mawsoni shows that once development begins, oocytes grow and accumulate at the cortical alveoli ... least a 6–12 month period, resulting in a developed group of oocytes accumulating at the final ... spawn at a younger age with an A 50% of 12.8 years (95% CI 11.9–14.0) or 120.4 cm (95% CI 114.8–126.7 ... - AND AGE-AT-SPAWNING OF ANTARCTIC TOOTHFISH (DISSOSTICHUS MAWSONI) IN THE ROSS SEA S.J. Parker ... developed group of oocytes accumulating at the final maturation stage by approximately May each year. The ... 133.2 cm (95% CI 130.9–135.7) by length. On average, males spawn at a younger age with an A50% of 12.8 ... ; Piyanova, 2008). A histologically based assessment of male age-at-spawning can extend the period in which ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 53–73 : Auteur(s): Parker, S.J. and P.J. Grimes

7. Depth distribution and spawning pattern of Dissostichus eleginoides at South Georgia

   Paper Title:  Depth distribution and spawning pattern of Dissostichus eleginoides at South Georgia ... significant pattern of changing mean length at depth with month was detected, suggesting movement of animals ... both up and down slope at particular times of year. Months with a high mean length at depth are May and ... August, and with a low mean length at depth- April and July. Examination of maturity data suggests that ... AND SPAWNING PATTERN OF DISSOSTICHUS ELEGINOIDES AT SOUTH GEORGIA D.J. hgnew Renewable Resources ... length. A statistically significant pattern of changing mean length at depth with month was detected ... , suggesting movement of animals both up and down slope at particular times of year. Months with a high mean ... length at depth are May and August, and with a low mean length at depth - April and July. Examination of ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 19–36 : Auteur(s): Agnew, D.J., L. Heaps, C. Jones, A. Watson, K. Berkieta and J. Pearce

8. Information on the status of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps in the lower South Shetland Islands, derived from the 2000–2006 monitoring program at Potter Cove

   Potter Cove Abstract / Description:  The long-term monitoring program of demersal fish at inshore sites ... of the South Shetland Islands has continued at Potter Cove from 2000 to 2006, extending a continuous ... sampling period of 24 years which began in 1983, and at Harmony Cove in the summers of 2001to 2003. The ... early 1980s, while those of G. gibberifrons have further declined and remain close to zero. At Harmony ... , Argentina Abstract The long-term monitoring program of demersal fi sh at inshore sites of the South ... of 24 years which began in 1983, and at Harmony Cove in the summers of 2001 to 2003. The decline in ... 1980s, while those of G. gibberifrons have further declined and remain close to zero. At Harmony Cove ... continuous sampling period of 24 years which began in 1983, and from 2001 to 2003 at Harmony Cove (HC). By ...

   Science Journal Paper : CCAMLR Science, Volume 14 (CCAMLR Science, Volume 14) : 83–87 : Auteur(s): Barrera-Oro, E.R. and E.R. Marschoff

9. Observations on haul-out patterns and trends in the breeding populations of southern elephant seal at Península Valdés (Patagonia) and Stranger Point (25 de Mayo - King George I.)

   intrinsic population growth rate is positive. In 1982, at Stranger Point, a sharp decrease of the female ... component of the population was observed (r=-56.54%). The recovery of the population at Stranger Point, and ... the global increase at Península Valdés, indicate the good condition of these populations. File:  21 ... Paper Title:  Observations on haul-out patterns and trends in the breeding populations of southern ... PATTERNS AND TRENDS IN THE BREEDING POPULATIONS OF SOUTHERN ELEPHANT SEAL AT PENINSULA VALDES (PATAGONIA ... population_at Stranger Point, and the global increase at Peninsula Valdes, indicate the good condition of ... PATTERNS AND TRENDS IN THE BREEDING POPULATIONS OF SOUTHERN ELEPHANT SEAL AT PENINSULA VALDES ... two different places. One of them was located at 25 de Mayo I. (King George) (1980-1986 except for ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 453-463 : Auteur(s): Vergani, D.F., M.N. Lewis and Z.B. Stanganelli

10. Distribution of fish larvae at South Georgia: horizontal, vertical, and temporal distribution and early life history relevant to monitoring year-class strength and recruitment

    Paper Title:  Distribution of fish larvae at South Georgia: horizontal, vertical, and temporal ... / Description:  Four studies on the early life history stages of Antarctic fish at South Georgia are reported ... top 2 m layer at certain times of day. In both seasons some species showed daily vertical migration ... . The findings are discussed in relation to surveys for sampling the early stages of fish at South ... - 105 - WG-FSA-87/16 DISTRIBUTION OF FISH LARVAE AT ... the early life history stages of Antarctic fish at South Georgia are reported. In winter and summer ... at certain times of day. In both seasons some species showed daily vertical migration. The ... findings are discussed in relation to surveys for sampling the early stages of fish at South Georgia, with ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 105-141 : Auteur(s): North, A.W.

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