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1. Variations in condition indices of mackerel icefish at South Georgia from 1972 to 1997

   penguin; trip = foraging trip duration; surv = pup survival; meal = meal size and S = breeding success ... . Year ct FUSE CEPE MAPE Nov Dec Jan Feb Mar Trip Surv Meal S Meal S Comparison of Condition Index ... to the diet of each of the three species. These are fur seal foraging trip duration and pup survival, gentoo ... . The foraging trip and diet parameters integrate over these same scales but in periods of two to five days ... Paper Title:  Variations in condition indices of mackerel icefish at South Georgia from 1972 to ... responds rapidly to changes in krill density and therefore can provide indications of short-term variations ... in krill availability. Condition index provides a useful proxy for krill density and is likely to be ... of considerable value in interpreting the results from ecosystein assessments such as that in ...

   Science Journal Paper : CCAMLR Science, Volume 8 (CCAMLR Science, Volume 8) : 119–132 : Author(s): Everson, I. and K.-H. Kock

2. Prey monitoring surveys: a discussion of the characteristics necessary in prey surveys

   of the parameters (foraging trip - 379 - duration, chick fledging weight and chick diet) identify a restricted ... although from a knowledge of swimming speed, activity budgets and foraging trip duration a reasonable ... shift length population Size Demography Foraging trip duration Breeding success Chick ... Paper Title:  Prey monitoring surveys: a discussion of the characteristics necessary in prey ... distribution to relate to changes in predator demography. The paper discusses the constraints imposed on such ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 377-391 : Author(s): Everson, I.

3. Trends in relative abundance of fjord Notothenia rossii, Gobionotothen gibberifrons and Notothenia coriiceps at Potter Cove, South Shetland Islands, after commercial fishing in the area

   of finfish in Antarctica started at the end of the 1960s. The fishery was developed mainly in offshore ... rOAa. O x a n a e ~ b m BbInoB Notothenia rossii m Gobionotothen gibberifrons OTHockiTenbHo BbIn ... Paper Title:  Trends in relative abundance of fjord Notothenia rossii, Gobionotothen gibberifrons ... and Notothenia coriiceps at Potter Cove, South Shetland Islands, after commercial fishing in the area ... continued at Potter Cove from 1991 to 1999, and at Harmony Cove, Nelson Island, in the austral summer of ... 1995/96. Still evident is the decline in trammel-net catches of fjord-dwelling Notothenia rossii and ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 43–52 : Author(s): Barrera-Oro, E.R., E.R. Marschoff and R.J. Casaux

4. Natural mortality rate in the mackerel icefish (Champsocephalus gunnari) around South Georgia

   in the 1960s and large-scale catches have been reported from 1970 onwards. Everson (1978) indicates ... of the Southern Ocean. M i t t . Ins t . Seefisch. Hamburg, 46: 1-73. Kochkin, P.N. 1995. On estimates ... Paper Title:  Natural mortality rate in the mackerel icefish (Champsocephalus gunnari) around ... careful consideration of the data and available methods, several errors are noted in earlier estimates ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 245–257 : Author(s): Everson, I

5. Consideration of major issues in ecosystem monitoring and management

   A5 Foraging trip duration 2 months 1–2 days 25–50 A6 Breeding success 2–3 months 100s A7 Chick ... trip duration 2–3 months Several days 20–100 C2 Pup growth 2–3 months 2–3 months 30–150 Calendar dateP ... ot en tia l r an ge fr om c ol on y Calendar date Foraging trip duration + Diet 1st ... characteristics to the availability of krill. At the one extreme, foraging trip duration refl ects the local ... Paper Title:  Consideration of major issues in ecosystem monitoring and management Abstract ... interactions and the manner in which their populations vary naturally. Large-scale interactions are catered for ... in the Krill Yield Model (KYM). Smaller-scale interactions centre around three main categories: the ... availability of krill, variation in vital rates of the dependent species and the overlap between commercial ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 213–232 : Author(s): Everson, I

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

   the depredated biomass using CPUE The amount of Patagonian toothfish biomass lost to depredation between 2003 ... d j k l d B c c E c= å (3) where ( ) , ,j k lloss dB c equals the fish biomass lost to depredation in each cell cd, for each ... fish biomass lost to depredation in all cells cu, ( ), ,CPUE j k lloss dC the global CPUE loss ... in cells cu for each case of depredation j, k and l. The final estimates of fish biomass lost to depre ... 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 ...

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

7. Defining smaller-scale management units to further develop the ecosystem approach in managing large-scale pelagic krill fisheries in Antarctica

   unimportant in the fi shery. The differentiation between the eastern and western parts of South Orkney ... to June 2000: Subarea 48.3 (top panel), Subarea 48.2 (middle panel) and Subarea 48.1 (bottom panel ... Paper Title:  Defining smaller-scale management units to further develop the ecosystem approach in ... managing large-scale pelagic krill fisheries in Antarctica Abstract / Description:  This paper discusses ... ecosystem but should be sufficiently independent for fishing in that unit not to inadvertently affect ... predators being monitored in other units. The South Atlantic region (Area 48) is used to illustrate how to ...

   Science Journal Paper : CCAMLR Science, Volume 9 (CCAMLR Science, Volume 9) : 117–131 : Author(s): Constable, A.J. and S. Nicol

8. Size at sexual maturity of Patagonian toothfish (Dissostichus eleginoides)

   number of data points which fall in the middle of the curve. (This point was highlighted as a warning ... , there are only sparse data in the middle of the curve for the July period. The results from the PROBITANALYSIS ... (Dissostichus eleginoides) caught in the commercial fishery within Subarea 48.3. The results for 1996 indicate ... that L m50 occurs at 78.5 cm total length for male and 98.2 cm for female fish. In 1997 the results for ... male fish were essentially the same. For female fish there is evidence that in 1997 a significant ... allowing for this bias indicates that L m50 for female fish in 1997 was no different to that for 1996. The ...

   Science Journal Paper : CCAMLR Science, Volume 6 (CCAMLR Science, Volume 6) : 37–46 : Author(s): Everson, I. and A.W. Murray

9. An alternative method for estimating the level of illegal fishing using simulated scaling methods on detected effort

   will curtail their fishing trips. This leads to a negative correlation between the amount of fishing ... , the more often the illegal fishers will curtail their fishing trips. This leads to a negative correlation ... shing, the more often the illegal fi shers will curtail their fi shing trips. This leads to a negative ... creates an illegal fi shing trip. The trip will have a random starting time which is chosen from ... trip j will be: , ( , ) duration j shortest longest IUU Uniform IUU IUU = (6) where ... , but if they are near the end of their trip they may con- tinue, particularly if the detection does not involve ...

   Science Journal Paper : CCAMLR Science, Volume 12 (CCAMLR Science, Volume 12) : 143–161 : Author(s): Ball, I

10. Preliminary study on nesting Adélie penguins disturbance by unmanned aerial vehicles

    at an altitude of 30 m was lost in the background (Goebel et al., 2015). Pomeroy et al. (2015) also reported ... . Evaluation of the Ravens UAS to detect and monitor greater sage- grouse leks within the Middle Park ... Abstract / Description:  The importance of unmanned aerial vehicles (UAVs) in remote sensing is rapidly ... growing. However, knowledge about their potential impact on wildlife is scant, especially in Antarctica ... , where they are a new tool used in ecological research and monitoring. In this preliminary study ... potential effects of wildlife disturbance by fixed-wing UAVs are investigated. In austral summer 2014/15 ...

    Science Journal Paper : CCAMLR Science, Volume 23 (CCAMLR Science, Volume 23) : 1–16 : Author(s): Korczak-Abshire, M., A. Kidawa, A. Zmarz, R. Storvold, S.R. Karlsen, M. Rodzewicz, K. Chwedorzewska and A. Znój

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