Abstract
Breeding populations of Aélie Penguins Pygoscelis adeliae have been counted at two localities near Casey Station in Wilkes Land, East Antarctica since 1959/60 and 1968/69. At Whitney Point, the breeding population increased from 1122 pairs in 14 colonies in 1959/60 to 4714 pairs in 36 colonies in 1992/93. All new colonies at Whitney Point established on relict colony sites identified in 1959/60. On Shirley Island, the total breeding population has remained at 7770 pairs ±10% between 1968/69 and 1992/93, except in 1990/91 when the population peaked at 8719 pairs. An association between the age of a colony and its rate of increase was observed at Whitney Point, with new colonies (those established since 1971/72) increasing more rapidly than colonies extant in 1959/60. At Shirley Island, where most of the colonies extant in 1968/69 have decreased in population, the establishment and growth of 13 colonies has offset this decrease; these new colonies also exhibited the association between age and rate of increase. Breeding success (chicks fledged per nest) was significantly lower for Shirley Island colonies than for those at Whitney Point. Human visitors to Shirley Island from Casey station are believed to be responsible for the observed changes in the distribution and abundance of breeding pairs and for maintaining the stable population by reducing overall breeding success through the disturbance associated with visits.
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References
Ainley DG, LeResche RE, Sladen WJL (1983) Breeding biology of the Adélie Penguin. University of California, Berkeley
Coles P (1991) Engineering feat or blight? Nature 350 (6316):301
Croxall JP, McCann TS, Prince PA, Rothery P (1988) Reproductive performance of seabirds and seals at South Georgia and Signy Island, South Orkney Islands, 1976–1987: Implications for Southern Ocean monitoring studies. In: Sahrhage D (ed) Antarctic Ocean and resources variability. Springer, Berlin Heidelberg New York pp 261–285
Culik B, Adelung D, Woakes AJ (1990) The effect of disturbance on the heart rate and behaviour of Adélie Penguins (Pygoscelis adeliae) during the breeding season. In: Kerry KR, Hempel G (eds) Antarctic Ecosystems. Ecological change and conservation. Springer, Berlin Heidelberg New York pp 177–182
Culik B, Wilson RP (1991) Penguins crowded out? Nature 351 (6325): 340
Eppley ZA, Rubega MA (1990) Indirect effects of an oil spillreproductive failure in a population of south polar skuas following the Bahia Paraiso oil spill in Antarctica. Mar Ecol Prog Ser 67:1–6
Fraser WR, Trivelpiece WZ, Ainley DG, Trivelpiece SG (1992) Increases in Antarctic penguin populations: reduced competition with whales or a loss of sea ice associated with environmental warming? Polar Biol 12:525–531
Jouventin P, Weimerskirch H (1990) Long-term changes in seabird and seal populations in the Southern Ocean. In: Kerry KR, Hempel G (eds) Antarctic Ecosystems. Ecological change and conservation. Springer, Berlin Heidelberg New York pp 208–213
Martin MR, Johnstone GW, Woehler EJ (1990) Increased numbers of Adélie Penguins Pygoscelis adeliae breeding near Casey, Wilkes Land, East Antarctica. Corella 14:119–122
Moors PJ (1986) Decline in numbers of Rockhopper Penguins at Campbell Island. Polar Rec 23:69–73
Penney RL (1968) Territorial and social behaviour in the Adélie Penguin. In: Austin OL Jr (ed) Antarctic Bird Studies. Antarctic Research Series Volume 12. AGU, Washington D.C., pp 83–131
Taylor RH, Wilson PR (1990) Recent increase and southern expansion of Adélie Penguin populations in the Ross Sea region related to climatic warming. NZJ Ecol 14:25–29
Taylor RH, Wilson PR, Thomas BW (1990) Status and trends of Adélie Penguin populations in the Ross Sea region. Polar Rec 26 (159): 293–304
Thomas T (1986) L'effectif des oiseaux nicheurs de l'archipel de Pointe Géologie (Terre Adélie) et son évolution au cours des trente dernières années. L'Oiseau et RFO 56:349–368
Trivelpiece WZ, Trivelpiece SG, Geupel GR, Kjelmyr J, Volkman NJ (1990) Adélie and Chinstrap Penguins: Their potential as monitors of the Southern Ocean ecosystem. In: Kerry KR, Hempel G (eds) Antarctic Ecosystems. Ecological change and conservation. Springer, Berlin Heidelberg New York pp 191–202
Whitehead MD, Johnstone GW, Burton HR (1990) Annual fluctuations in productivity and breeding success of Adélie Penguins and fulmarine petrels in Prydz Bay, East Antarctica. In: Kerry KR Hempel G (eds) Antarctic Ecosystems. Ecological change and conservation. Springer, Berlin Heidelberg New York pp 214–223
Wilson K-J, Taylor RH, Barton KJ (1990) The impact of man on Adélie Penguins at Cape Hallett, Antarctica. In: Kerry KR, Hempel G (eds) Antarctic Ecosystems. Ecological change and conservation. Springer, Berlin Heidelberg New York pp 183–190
Woehler EJ (1993) The distribution and abundance of Antarctic and Subantarctic penguins. SCAR, Cambridge
Woehler EJ, Green K (1992) Consumption of marine resources by seabirds and seals at Heard Island and the McDonald Islands. Polar Biol 12:659–665
Woehler EJ, Johnstone GW, Burton HR (1989) The distribution and abundance of Adélie Penguins Pygoscelis adeliae in the Mawson area and at the Rookery Islands (Specially Protected Area 2), 1981 and 1988. ANARE Res Notes 71
Woehler EJ, Slip DJ, Robertson LM, Fullagar PJ, Burton HR (1991) The distribution, abundance and status of Adélie Penguins Pygoscelis adeliae at the Windmill Islands, Wilkes Land, Antarctica. Mar Orn 19:1–18
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Woehler, E.J., Penney, R.L., Creet, S.M. et al. Impacts of human visitors on breeding success and long-term population trends in Adélie Penguins at Casey, Antarctica. Polar Biol 14, 269–274 (1994). https://doi.org/10.1007/BF00239175
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DOI: https://doi.org/10.1007/BF00239175