Snowmelt modelling on signy island, South Orkney Islands
نویسندگان
چکیده
منابع مشابه
Population Size and Decadal Trends of Three Penguin Species Nesting at Signy Island, South Orkney Islands
We report long-term changes in population size of three species of sympatrically breeding pygoscelid penguins: Adélie (Pygoscelis adeliae), chinstrap (Pygoscelis antarctica) and gentoo (Pygoscelis papua ellsworthii) over a 38 year period at Signy Island, South Orkney Islands, based on annual counts from selected colonies and decadal all-island systematic counts of occupied nests. Comparing tota...
متن کاملChanges in lichen diversity and community structure with fur seal population increase on Signy Island, South Orkney Islands
Signy Island has experienced a dramatic increase in fur seal numbers over recent decades, which has led to the devastation of lowland terrestrial vegetation, with the eradication of moss turfs and carpets being the most prominent feature. Here we demonstrate that fur seals also affect the other major component of this region’s typical cryptogamic vegetation, the lichens, although with a lower d...
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In 2001 the LIMNOPOLAR Project was launched with the aim of addressing the suitability of freshwater ecosystems as useful sentinels of climate change. In this project, an automatic weather station was deployed on Byers Peninsula (Livingston Island, South Shetland Islands) near several freshwater ecosystems under research. Here the multi-year data recorded are presented and compared with meteoro...
متن کاملEretmoptera Murphyi Schaeffer (diptera: Chironomjdae), an Apparently Parthenogenetic Antarctic Midge
Chironomid midges are amongst the most abundant and diverse holo metabolous insects of the Antarctic and sub-Antarctic. Eretmoptera murphyi Schaeffer, 1914, has been enigmatic to systematists since the first discovery of adult females on South Georgia. The rediscovery of the species as a suspected introduction to Signy Island (South Orkney Islands) allows the description of the immature stages...
متن کاملForaging strategies of chinstrap penguins at Signy Island, Antarctica: importance of benthic feeding on Antarctic krill
Chinstrap penguins Pygoscelis antarctica are one of the major consumers of Antarctic krill Euphausia superba in the Southern Ocean. To examine their foraging strategy, we studied foraging trip patterns and diving behaviour of chinstrap penguins breeding at Signy Island, Antarctica, using time-depth recorders. Foraging trips of penguins could be divided into 2 groups, short diurnal (7.8 h) and l...
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ژورنال
عنوان ژورنال: Annals of Glaciology
سال: 1998
ISSN: 0260-3055,1727-5644
DOI: 10.3189/1998aog26-1-161-166