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1. Temporal variability and the interrelationships between CEMP parameters collected on Adélie penguins at Béchervaise Island

   are critical for chick survival. There was a strong negative correlation between female foraging trip duration ... success and foraging trip duration was low for males. Male foraging trips during the crèche period were ... . There was a strong negative correlation between female foraging trip duration during both the guard and the crè ... ;che period and breeding success, while the correlation between breeding success and foraging trip ... survival. There was a strong negative correlation between female foraging trip duration during both ... and foraging trip duration was low for males. Male foraging trips during the crèche period were, however ... (population size, breeding success, foraging trip duration and diet) over eight successive seasons from 1990 ... trip duration during the guard phase. Their analysis is extended in this paper by including a wider ...

   Science Journal Paper : CCAMLR Science, Volume 10 (CCAMLR Science, Volume 10) : 75–90 : Author(s): Emmerson, L.M., J. Clarke, K.R. Kerry and C. Southwell

2. Sensitivity analysis for parameters of predatory species CCAMLR Ecosystem Monitoring Program

   Program Abstract / Description:  Following the request of the Scientific Committee of CCAMLR to conduct ... at breeding colonies; duration of first incubation shift; duration of adult foraging trips; breeding success ... Following the request of the Scientific Committee of CCAMLR to conduct sensitivity analyses ... at breeding colonies; duration of first incubation shift; duration of adult foraging trips; breeding ... OF PREDATORY SPECIES CCAMLR ECOSYSTEM MONITORING PROGRAM M.D. Whitehead Abstract Following the request ... shift; • duration of adult foraging trips; • breeding success; and • chick fledging weight. Resume ... Secretariat and Convener ofCEMP. This report summarizes some preliminary data on various Adelie penguin ... ). This parameter is considered likely to be sensitive to variable food availability during the foraging trip ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/6 (Selected Scientific Papers, SC-CAMLR-SSP/6) : 411–432 : Author(s): Whitehead, M.D.

3. Assessing the power to detect systematic change in Adélie penguin foraging trip duration

   Paper Title:  Assessing the power to detect systematic change in Adélie penguin foraging trip ... duration Abstract / Description:  Models of variability in Adélie penguin foraging trip durations were ... variation was known to occur. Variability among trips and penguins was greater in the crèche stage ... or trips sampled diminished rapidly when sample sizes were greater than 30 penguins and three trips per ... ASSESSING THE POWER TO DETECT SYSTEMATIC CHANGE IN ADÉLIE PENGUIN FORAGING TRIP DURATION C. Southwell ... trip durations were constructed and fitted to data collected at Béchervaise Island over a 12-year ... period when only natural variation was known to occur. Variability among trips and penguins was greater ... the number of penguins or trips sampled diminished rapidly when sample sizes were greater than 30 penguins ...

   Science Journal Paper : CCAMLR Science, Volume 13 (CCAMLR Science, Volume 13) : 201–215 : Author(s): Southwell, C., J. Clarke and L.M. Emmerson

4. Foraging behaviour and reproductive success in chinstrap penguins: the effects of transmitter attachment

   method with which to monitor foraging trip duration in penguins by the CCAMLR (Commission ... on: (i) the effects of radio transmitter attachment on nest attendance, foraging trip duration, nest failure ... between trip durations obtained by applying the transmitters to one or both members of a breeding pair ... trip duration in penguins by the CCAMLR (Commission for the Conservation of the Antarctic Marine Living ... with which to monitor foraging trip duration in penguins by the CCAMLR (Commission for the Conservation ... on: (i) the effects of radio transmitter attachment on nest attendance, foraging trip duration, nest failure ... between trip durations obtained by applying the transmitters to one or both members of a breeding pair ... that attaching radio transmitters led to a significant increase in the duration of foraging trips of chinstrap ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/8 (Selected Scientific Papers, SC-CAMLR-SSP/8) : 291–303 : Author(s): Croll, D.A., J.L. Bengtson, P.L. Boveng, M.E. Goebel and J.K. Jansen

5. Low breeding success of the Adélie penguin at Béchervaise Island in the 1998/99 season

   , foraging trip duration and diet suggests that the death of chicks during the guard stage was due ... fewer local trips and both sexes spent longer at sea than in years of higher breeding success. Meal ... masses brought back to the chicks were within the normal range but extended foraging trip durations ... , foraging trip duration and diet suggests that the death of chicks during the guard stage was due ... chicks crPched per nest. Evidence from analyses of foraging location, foraging trip duration and diet ... ) and locally (particularly males). This season male penguins carried out fewer local trips and both sexes ... were within the normal range but extended foraging trip durations reduced feeding frequency ... to affect increased foraging trip durations (Croxall et al., the ecology of natural predators has ...

   Science Journal Paper : CCAMLR Science, Volume 7 (CCAMLR Science, Volume 7) : 151–167 : Author(s): Irvine, L.G., J.R. Clarke and K.R. Kerry

6. The effects of monitoring procedures on Adélie penguins

   resulted in increased foraging trip durations and reduced breeding success. Attachment for single ... or multiple foraging trips post-hatching caused no significant increase in foraging trip durations ... devices during the incubation period resulted in increased foraging trip durations and reduced breeding ... success. Attachment for single or multiple foraging trips post-hatching caused no significant increase ... foraging trip durations and reduced breeding success. Attachment for single or multiple foraging trips ... post-hatching caused no significant increase in foraging trip durations. No reduction in fledging ... , 1991). The overall outcome tends to be a n increase in foraging trip durations (Wilson et al., 1989 ... and recruitment, foraging trip durations, breeding success and fledging weight, whilst minimising human presence ...

   Science Journal Paper : CCAMLR Science, Volume 1 (CCAMLR Science, Volume 1) : 155–164 : Author(s): Clarke, J. and K. Kerry

7. The gentoo penguin as a candidate species for the CCAMLR Ecosystem Monitoring Program

   appear to feed chiefly on fish, at least during single foraging trips (Jablonski, 1985; Croxall et al ... Study Region, there are accurate counts of breeding populations, often dating back to the 1950s ... , foraging trip duration, demography). 4. ADDmONAL CONSIDERATIONS 4.1 Resident Species Gentoo penguins ... years at Bird Island, South Georgia and at the South Shetland Islands (both within Integrated Study ... Regions (ISRs) of the CCAMLR Ecosystem Monitoring Program), we suggest (and provide a full bibliography of ... in the CEMP. The extensive dependence of this species in these ISRs on Euphausia superba, (including ... in winter), its residence in the ISRs in winter and its early attainment of sexual maturity are all ...

   Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/7 (Selected Scientific Papers, SC-CAMLR-SSP/7) : 483–488 : Author(s): Croxall, J.P. and T.D. Williams

8. Variations in echosounder calibration with temperature, and some possible implications for acoustic surveys of krill biomass

   European waters. Under these warmer conditions, calibrated gain settings differ markedly from those applied ... . Here we present results from multiple Antarctic and European calibrations which suggest ... in European waters (16.6 o C), and a similar trend was detected at 38 kHz. If European calibration parameters ... this echosounder has also been calibrated in temperate European waters. Under these warmer conditions, calibrated ... this echosounder has also been calibrated in temperate European waters. Under these warmer conditions, calibrated ... multiple Antarctic and European calibrations which suggest that echosounder transducer performance ... temperature at depth of transducer = 2.3'C) were on average 1.4 dB less than in European waters (16.6 ... "C), and a similar trend was detected at 38 kHz. If European calibration parameters were to be employed during ...

   Science Journal Paper : CCAMLR Science, Volume 5 (CCAMLR Science, Volume 5) : 273–281 : Author(s): Brierley, A.S., C. Goss, J.L. Watkins and P. Woodroffe

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

   and persistent sea-ice and strong winds with snowfalls in December. First incubation trips by females were ... incubation trip. A high number of chicks died during the post-hatching stage and the breeding success was low ... 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 males on the second incubation trip ... and strong winds with snowfalls in December. First incubation trips by females were signifi cantly longer ... trip. A high number of chicks died during the post-hatching stage and the breeding success was low ... such as reduced food availability and ice cover extension will cause lengthening of foraging trips (Irvine et al ... ., 2000). However, the degree to which trips lengthen is con- strained by the need to relieve the mate ...

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

10. Reproductive performance of seabirds and seals at South Georgia and Signy Island, South Orkney Islands, 1976-1987: implications for Southern Ocean monitoring studies

    of breeding population size, breeding success, foraging trip duration and offspring growth rate. 1977-78 ... in some or all of breeding population size, breeding success, foraging trip duration and offspring growth ... shown major fluctuations in some or all of : breeding population size, breeding success, foraging trip ... Y qepHo6pOBOfO, CepOfOJJOBOfO I1 CTpaHcTBy~efo aJJb6aTpOCOB, nanyaccKofO I1 30JIOTOBOJJOCOfO nI1HfBI1HOB I1 IO ...

    Science Journal Paper : Selected Scientific Papers, SC-CAMLR-SSP/4 (Selected Scientific Papers, SC-CAMLR-SSP/4) : 445-447 : Author(s): Croxall, J.P., T.S. McCann, P.A. Prince and P. Rothery

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