Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/61228
Title: Populations of breeding birds in Byers Peninsula, Livingston Island, South Shetland Islands
Author: Gil Delgado, José Antonio
González-Solís, Jacob
Barbosa, Andrés
Keywords: Ocells
Poblacions animals
Antàrtida
Birds
Animal populations
Antarctica
Issue Date: Mar-2013
Publisher: Cambridge University Press
Abstract: Data about breeding populations of birds in the Antarctica are rare and fragmented. Thus, information about the status of the breeding populations of Antarctic birds is crucial given the current scenario of climate change, which is particularly acute in Antarctica. This paper presents new information about the populations of the Antarctic tern Sterna vittata, the kelp gull Larus dominicanus, the southern giant petrel Macronectes giganteus, the Antarctic skua Catharacta antarctica lonnbergi, the chinstrap penguin Pygoscelis antarctica and the gentoo penguin Pygoscelis papua on Byers Peninsula (Livingston Island, South Shetland Islands). We used line transects counts to estimate both densities and numbers of nests of the different species. We estimate that there are 398.96 birds km-2 of southern giant petrels (2793 individuals), 62.4 birds km-2 of Antarctic tern (3746 individuals) and 269.1 birds km-2 of kelp gull (1884 individuals). Furthermore, we found 15 nests of Antarctic skua in 25 km2, from which we can estimate that 60<br>91 birds must breed on Byers Peninsula. We also censused two colonies of gentoo penguins (3000 and 1200 pairs) and 50 pairs of chinstrap. Compared to previous estimates, gentoo penguins seem to have increased whereas chinstrap penguin have decreased. Finally, the populations of Antarctic tern, southern giant petrel and kelp gull have stabilized or slightly increased.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1017/S0954102012000752
It is part of: Antarctic Science, 2013, vol. 25, num. 2, p. 303-306
Related resource: http://dx.doi.org/10.1017/S0954102012000752
URI: http://hdl.handle.net/2445/61228
ISSN: 0954-1020
Appears in Collections:Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)

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