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1. A review of the diet and at-sea distribution of penguins breeding within the CAMLR Convention Area (submitted to the 2008 Joint CCAMLR-IWC Workshop)

   in an ecologically sensitive manner demands that catches do not depress stocks within the foraging ... . These models require information on the number of predators in a population, their nutritional demands ... , their diet composition and their seasonal distribution in the marine environment. This paper reviews all ... published information on the diet and at-sea distribution of the six penguin species that breed in the CAMLR ... does cause birds distress, and in exceptional cases results in death of a study animal, but it is ... be stored in 70% alcohol or frozen at –20°C, but feathers, toenails, eggshell and bone require no ... of sites within each and often in a limited number of years and seasons. Sampling is par- ticularly ... 1994. Birds travelled for c. 30 days to areas of perennially consistent pack- ice in the eastern Ross ...

   Science Journal Paper : CCAMLR Science, Volume 19 (CCAMLR Science, Volume 19) : 75–114 : Autor(es): Ratcliffe, N. and P. Trathan

2. Movement, growth and available abundance to the fishery of Dissostichus eleginoides Smitt, 1898 at Heard Island, derived from tagging experiments

   Patagonian toothfish (Dissostichus eleginoides) in different sectors of the Southern Ocean are considered to ... be genetically distinct. However, in the Indian Ocean, it is largely unknown whether stocks are ... separation using tagged fish from the fishery around Heard Island and McDonald Islands (HIMI) in the ... Australian Exclusive Economic Zone (EEZ). Movement, growth and trends in fish abundance are examined using ... 22 10 7 20 4 30 6 Fi sh in g gr ou nd C 23 7 50 51 0 18 7 39 13 9 25 Pl at ea u ... la bl e nu m be rs (m ill io ns ) 1998 1999 2000 2001 Year 0 10 20 30 40 50 Pr ed ic ... te d nu m be rs (m illi on s) 1998 1999 2000 2001 Year 50 40 30 20 10 0 P re di ct ... 00 30 00 40 00 40 00 30 00 30 00 20 00 10 00 50 0 M A R IO N /P . E D W A R D CR O ZE ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 33–48 : Autor(es): Williams, R., G.N. Tuck, A.J. Constable and T. Lamb

3. CCAMLR ecosystem monitoring and management: future work

   :  Harvesting of marine living resources in the Southern Ocean is managed by the Commission for the Conservation ... managing fisheries with the maintenance of ecological relationships included in the conservation objectives ... . In the late 1980s, CCAMLR’s precautionary approach was developed, incorporating principles of how to ... use scientific evidence in the decision-making process. Even though this approach was based on the ... assessing such evidence during the formative years of CCAMLR. Decisions were made only in reaction to ... la Mare and Constable, 2000, see below). Importantly, the objectives in Article II of the ... scale during the early stages of the fi shery and to 0 1 2 3 0 1 2 3 D en si ty 0 10 20 30 ... of sampling within a year in order to determine the relationship between krill and predators for ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 233–253 : Autor(es): Constable, A.J

4. The ecosystem approach to managing fisheries: achieving conservation objectives for predators of fished species

   in its infancy. A general approach is proposed for maintaining ecological relationships and providing ... for the recovery of depleted populations in food webs supporting fisheries. This paper addresses the ... objectives? The approach proposed here takes account of uncertainties in knowledge of the structure of ... ecosystems. Estimates of predator production arising from the consumption of fished species (encapsulated in ... 20-30 years, wl~ich is the critical period over which the system should not be irreversibly changed ... zero after 20 years. Prey 2 is more abundant (-3x) than Prey 1 in the absence of fishing and then ... years (see text for details). Year Figure 7: Individual productivity for each predator in the trial ... discussed here. year to the next, such that there inay be more predators of fished species in years when ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 37–64 : Autor(es): Constable, A.J

5. Effects of weather and sea-ice on the reproductive performance of the Adélie penguin at Edmonson Point, Ross Sea

   seasons. Weather and sea-ice regimes varied notably, especially in 2003, which was characterised by ... extensive and persistent sea-ice and strong winds with snowfalls in December. First incubation trips by ... females were significantly longer than in 1999 and 2001, which in turn delayed the mean departure date of ... delayed compared to dates recorded in 1999 and 2001. The average weight of adults rearing chicks was lower ... 0 10 20 30 40 50 60 70 80 W in d s p e e d ( k n o ts ) n = 97 n = 76 ... -January. In 2003 the fast-ice again extended about 20 km but, unlike the previous year, it did not ... conditions varied during the three seasons (Figure 1). In 1999 maximum wind speed exceeded 30 knots on a ... /99 0 2 4 6 8 10 12 14 16 N u m b e r o f d e a d c h ic k s 0 10 20 30 40 ...

   Science Journal Paper : CCAMLR Science, Volume 11 (CCAMLR Science, Volume 11) : 99–109 : Autor(es): Olmastroni, S., F. Pezzo, V. Volpi and S. Focardi

6. Sensitivity investigation of the SDWBA Antarctic krill target strength model to fatness, material contrast and orientation

   the distribution of animal orientations. Due to the high variability of TS to realistic changes in ... model is recognised as state-of-the-art in predicting acoustic target strength (TS) from fluid-like ... TS of Antarctic krill (Euphausia superba) for use in the acoustic echo-integration method. In this ... study, the SDWBA TS pattern and frequency response behaviours at standard survey frequencies and animal ... the along-axis deforma- tion and changes in animal body curvature during swimming. With a successive ... if that animal is representative of krill in the wild. In their validation of the SDWBA model to ... rb a M . n or ve gi ca N [4 5. 3, 30 .4 ] N [5 3. 8, 64 .2 ] O bs er va tio n in ... ] O bs er va tio n in a qu ar iu m C hu e t a l., 1 99 3 E. su pe rb a N [ 20 ...

   Science Journal Paper : CCAMLR Science, Volume 18 (CCAMLR Science, Volume 18) : 97–122 : Autor(es): Calise, L. and G. Skaret

7. Improving estimates of Adélie penguin breeding population size: developing factors to adjust one-off population counts for availability bias

   presented for the collection and development of data to adjust counts of Adélie penguins made at any time in ... point one week after the peak in egg laying, consistent with Standard Method A3 of the CCAMLR Ecosystem ... illustrated using data collected at the Béchervaise Island CEMP site in 2007/08. Estimates of the breeding ... , breeding-age penguins that failed to return to the breeding site in that breeding season, nor pre-breeding ... foraging and relieve the males from their incubating duties, who in turn leave the breeding sites to ... 1 Nov 16 1 Dec 16 1 Jan 16 1 Feb 16 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 0 10 20 30 40 50 60 ... Camera 2 16 1 Nov 16 1 Dec 16 1 Jan 16 1 Feb 16 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 0 10 20 30 40 50 ... 16 1 Feb 16 0. 0 0. 2 0. 4 0. 6 0. 8 1. 0 10 20 30 40 50 60 C ou nt Date A O n es t a ...

   Science Journal Paper : CCAMLR Science, Volume 17 (CCAMLR Science, Volume 17) : 229–241 : Autor(es): Southwell, C., J. McKinlay, L. Emmerson, R. Trebilco and K. Newbery

8. Management and uncertainty: the example of South Georgia

   :  Decisions on fishery management are often made with some degree of uncertainty in scientific advice. Such ... to consider ways in which CCAMLR can improve its ability to take decisions in the face of uncertainty ... uncertainty. The question is addressed specifically in terms of the fishery of Notothenia rossii around South ... in the 1980 year-class (paragraph 20 of the report). - 346 - Accepting that the decline in ... , and the small numbers from the 1966 to 1969 year-classes observed in later years would not be ... mortalities in the years 1976 to 1983 (excluding 1980) of 0.2 to 0.6. The only year during this period in ... - 345 - mesh size and transmits a report to this effect in accordance with Article XV 2 (e), and ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/3 (Selected Scientific Papers, SC-CAMLR-SSP/3) : 341-353 : Autor(es): Gulland, J.A.

9. Comparison of two methods to assess fish losses due to depredation by killer whales and sperm whales on demersal longlines

   depredation occurs on fish in the marine environment. This is the case for killer whales (Orcinus orca) and ... to 2013), accounting for spatial variations of depredation levels. In the first method, fishing data ... second method used the differences in the proportion of grenadiers (Macrourus spp.) between non ... the highest among all similar situations where depredation is reported elsewhere in the world. In ... , represented less than 20% of all cells (Cd + Cu). Out of 145 cells in total, 83 were used for killer whales ... whales and 19 cells cg in the presence of killer whales and sperm whales together as both data in the ... GLMMs in further studies. This study spans a total of 10 years to estimate losses, which gives a more ... recent years of this study: fishing vessels no longer concentrate in the Crozet Islands in February as ...

   Science Journal Paper : CCAMLR Science, Volume 22 (CCAMLR Science, Volume 22) : 1–14 : Autor(es): Gasco, N., P. Tixier, G. Duhamel and C. Guinet

10. A first step towards modelling the krill–predator dynamics of the Antarctic ecosystem

    ecosystem Abstract / Description:  The history of human harvests of seals, whales, fish and krill in the ... hypothesis of a krill surplus in the mid-20th century is described, and the information on population and ... ) species. The model commences in 1780 (the onset of fur seal harvests) and distinguishes the Atlantic ... /Indian and Pacific Ocean sectors of the Southern Ocean in view of the much larger past harvests in the ... of this species declined substantially over the first 20 years of the fishery, from 1970 to 1990 ... , seems certainly plausible. More recent trends in whales and seals in the Antarctic More than 30 ... corresponds to the Areas V, VI and I. The two regions, together with the IWC management areas, are shown in ... in Region A for 11 years during the period from 1967 to 1977 (Boyd, pers. comm.). The consequent ...

    Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 217–277 : Autor(es): Mori, M. and D.S. Butterworth

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