Monitoring Antarctic environmental variables using penguins
نویسندگان
چکیده
منابع مشابه
Ecological Sexual Dimorphism and Environmental Variability within a Community of Antarctic Penguins (Genus Pygoscelis)
BACKGROUND Sexual segregation in vertebrate foraging niche is often associated with sexual size dimorphism (SSD), i.e., ecological sexual dimorphism. Although foraging behavior of male and female seabirds can vary markedly, differences in isotopic (carbon, δ13C and nitrogen, δ15N) foraging niche are generally more pronounced within sexually dimorphic species and during phases when competition f...
متن کاملAdélie penguins and environmental change.
IN THEIR REVIEW “ENVIRONMENTAL CHANGE and Antarctic seabird populations,” (Special Issue on Polar Science, 30 Aug., p. 1510), J. P. Croxall et al. describe paradoxes, many of which exist only because of a limited review of available information. Stating that the paleoecological record shows close correspondence between ice cover and the presence of Adélie penguins is correct (1), but claiming t...
متن کاملMutation and Evolutionary Rates in Adélie Penguins from the Antarctic
Precise estimations of molecular rates are fundamental to our understanding of the processes of evolution. In principle, mutation and evolutionary rates for neutral regions of the same species are expected to be equal. However, a number of recent studies have shown that mutation rates estimated from pedigree material are much faster than evolutionary rates measured over longer time periods. To ...
متن کاملProjected asymmetric response of Adélie penguins to Antarctic climate change
The contribution of climate change to shifts in a species' geographic distribution is a critical and often unresolved ecological question. Climate change in Antarctica is asymmetric, with cooling in parts of the continent and warming along the West Antarctic Peninsula (WAP). The Adélie penguin (Pygoscelis adeliae) is a circumpolar meso-predator exposed to the full range of Antarctic climate and...
متن کاملSerological and virological surveys of the influenza A viruses in Antarctic and sub-Antarctic penguins
To evaluate the avian influenza virus (AIV) circulation in Antarctic and sub-Antarctic penguins we carried out a serosurvey on six species from Livingston, Marion and Gough islands. Seropositivity against AIV was performed on serum samples using a competitive enzyme-linked immunosorbent assay and haemagglutination and neuraminidase inhibition assays. Some oropharyngeal and cloacal swabs were al...
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ژورنال
عنوان ژورنال: Marine Ecology Progress Series
سال: 1994
ISSN: 0171-8630,1616-1599
DOI: 10.3354/meps106199