TY - JOUR N2 - Long term changes (46 years) in the a bundance of pygoscelid penguins breeding populations and nests distribution in the Lions Rump (King George Island) colony were investigated in three time intervals, according to previously published two censuses and one original study conducted in 2010. At that time a detailed colony map based on the GIS system was made. Results of this study showed different trends for each investigated species. In the last three decades Adélie penguin breeding populations showed strong declining tendencies (69.61%). In contrast, the population of gentoo penguins represents the reverse trend, increasing 171.85% over the same period. Observed changes in both penguin population sizes are reflected in the different spatial and geographic distribution of their nests. The population changes observed at the Lions Rump colony are consistent with the relevant pygoscelid penguin tendencies in the western Antarctic Peninsula region. Breeding penguin population dynamics at Lions Rump area with a minimal disturbance by human activity may well illustrate a natural response of those birds to environmental changes in the Antarctic. L1 - http://www.czasopisma.pan.pl/Content/99543/PDF/10183_Volume34_Issue1_06_paper.pdf L2 - http://www.czasopisma.pan.pl/Content/99543 PY - 2013 IS - No 1 EP - 99 DO - 10.2478/popore−2013−0002 KW - Antarctic KW - South Shetlands KW - Pygoscelis KW - spatial structure KW - population trends A1 - Korczak-Abshire, Małgorzata A1 - Węgrzyn, Michał A1 - Angiel, Piotr J. A1 - Lisowska, Maja PB - Polish Academy of Sciences PB - Committee on Polar Research DA - 2013 T1 - Pygoscelid penguins breeding distribution and population trends at Lions Rump rookery, King George Island SP - 87 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/99543 T2 - Polish Polar Research ER -