scholarly journals Collembola (Arthropoda, Hexapoda) Associated to Terrestrial Green Algae from Ice-Free Areas in Admiralty Bay (King George Island, South Shetlands Islands, Antarctica)

2013 ◽  
pp. 94-97
Author(s):  
Maria Cleide de Mendonça ◽  
Gabriel Costa Queiroz ◽  
Eduardo Assis Abrantes ◽  
Adriana Galindo Dalto ◽  
Yocie Yoneshigue Valentin
Keyword(s):  
Green Algae ◽  
King George Island ◽  
Admiralty Bay ◽  
South Shetlands

scholarly journals Colonization by mites of glacier-free areas in King George Island, Antarctica

2009 ◽  
Vol 44 (8) ◽  
pp. 891-895 ◽  
Author(s):  
Grzegorz Gryziak
Keyword(s):  
West Coast ◽  
Protected Area ◽  
Soil Samples ◽  
Oribatid Mites ◽  
King George Island ◽  
Admiralty Bay ◽  
Near Shore ◽  
South Shetlands ◽  
Mite Communities ◽  
The Antarctic

This work aimed to investigate the ratio of colonization by terrestrial mites on ice-free areas created by the ongoing climate-induced melting of Antarctic glaciers. Glacier retreat opens new ice-free areas for the colonization by vegetation and animals. The study was undertaken on the Antarctic Specially Protected Area no. 128 (West Coast of the Admiralty Bay, King George Island, South Shetlands Islands). Transects marked between the Ecology, Baranowski and Windy Glaciers, and a sea shore were used to collect soil samples. Oribatid mites were found only on near-shore areas, on patches of vegetation of more than 30 years of age. The colonization by mite communities is strongly determined by the presence of plants.

scholarly journals New species of desmosomatid isopods from Admiralty Bay, King George Island

2011 ◽  
Vol 32 (4) ◽  
pp. 321-340 ◽  
Author(s):  
Karol Zemko ◽  
Saskia Brix
Keyword(s):  
New Species ◽  
Body Shape ◽  
Original Description ◽  
The Body ◽  
King George Island ◽  
Admiralty Bay ◽  
Two New Species ◽  
South Shetlands

New species of desmosomatid isopods from Admiralty Bay, King George IslandTwo new species of desmosomatid isopods,Eugerdella margaretaesp. n. andEugerdella celatasp. n. are described from Admiralty Bay, King George Island, South Shetlands. Information is added to the original description ofEugerdella falklandica(Nordenstam, 1933) based on re-examination of the holotype. Both new species are similar toE. falklandica, for example by the body shape, the shape of pleotelson and presence of rows of four horn-like spines on the head. They are distinguished fromE. falklandicaby the number of setae on pereopod articles.Eugerdella celatasp. n. is distinguished by the presence of ventral spines on pereonites 1-4.

scholarly journals Change in N and P Concentrations in Antarctic Streams as a Response to Change in Penguin Populations

2010 ◽  
Vol 17 (1) ◽  
pp. 67-80 ◽  
Author(s):  
Arkadiusz Nędzarek
Keyword(s):  
Organic Matter ◽  
Trophic Status ◽  
Ammonium Nitrogen ◽  
King George Island ◽  
Nitrogen And Phosphorus ◽  
Admiralty Bay ◽  
Ultimate Cause ◽  
South Shetlands ◽  
Reactive Phosphorus ◽  
Response To Change

ABSTRACTThis study presents changes in the concentrations of nitrogen and phosphorus in two streams in Western Antarctica (Admiralty Bay, King George Island, South Shetlands) that differ in trophic status. The results suggest a decline in concentrations of the determined forms of N and P between 2001 and 2005. The decrease ranged from 9.3% for reactive phosphorus to 73.2% for ammonium-nitrogen. Such inferred declines in N and P concentrations are considered to reflect reduced deposition on land of organic matter brought in from the seas by the penguins nesting in the area. The ultimate cause of this is in turn the steady decline in abundance that is being noted for these penguins.

scholarly journals Marine Macroalgal Diversity in Admiralty Bay, King George Island, South Shetlands Islands, Antarctica

2013 ◽  
pp. 140-148 ◽  
Author(s):  
Yocie Yoneshigue-Valentin ◽  
Ingrid Balesteros Silva ◽  
Mutue Toyota Fujii ◽  
Nair Sumie Yokoya ◽  
Diclá Pupo ◽  
...  
Keyword(s):  
King George Island ◽  
Admiralty Bay ◽  
South Shetlands

scholarly journals The sea-spiders (Arthropoda: Pycnogonida) of Admiralty Bay, King George Island

2011 ◽  
Vol 32 (1) ◽  
pp. 27-38 ◽  
Author(s):  
Roger Bamber
Keyword(s):  
Fine Sand ◽  
Wide Distribution ◽  
Research Station ◽  
King George Island ◽  
Scotia Sea ◽  
Admiralty Bay ◽  
Sea Spiders ◽  
Antarctic Waters ◽  
South Shetlands ◽  
Prevalent Species

The sea-spiders (Arthropoda: Pycnogonida) of Admiralty Bay, King George IslandBetween 1979 and 2007, various sampling projects from the PolishArctowskiResearch Station in Admiralty Bay, King George Island, Antarctica, collected a diverse assemblage of pycnogonids,inter alia. Examination of this material has revealed 24 species in 11 genera and six families: all of this material is described. Samples were from poorly-sorted fine-sand to coarse-silt substrata, at depths between 27 and 405 m. The diverse assemblage was of species consistent with the known pycnogonid fauna of these depths in the South Shetlands and the Palmer Archipelago region, and includes a number of species recorded for only the second time since the types. As typical for Antarctic waters, the predominant and most diverse genus wasNymphon(nine species); the prevalent species wasNymphon eltaninae, notNymphon australe: implications for the apparent wide-distribution of records of the latter species are discussed. These records increase the biogeographical range ofNymphon subtileandNymphon punctumfrom Subantarctic waters to the Scotia Sea.

scholarly journals Changes in bird communities of Admiralty Bay, King George Island (West Antarctic): insights from monitoring data (1977–1996)

2017 ◽  
Vol 38 (2) ◽  
pp. 231-262 ◽  
Author(s):  
Kazimierz Sierakowski ◽  
Małgorzata Korczak-Abshire ◽  
Piotr Jadwiszczak
Keyword(s):  
Gentoo Penguin ◽  
King George Island ◽  
Admiralty Bay ◽  
Bird Populations ◽  
West Antarctic ◽  
Breeding Populations ◽  
Western Shore ◽  
Population Sizes ◽  
South Shetlands ◽  
Penguin Species

AbstractThe paper summarizes results of twenty years of seabird observations carried out between 1977 and 1996 on the western shore of Admiralty Bay (King George Island, South Shetlands, Antarctic). Changes in population size, distribution and phenology of the breeding species as well as the appearance of non-breeding species are reported. A total of 34 species of birds were observed, including 13 breeding species. Among the non-breeding species, four were observed to visit the site regularly, six rarely, and the remaining 11 were observed only occasionally. Among breeding populations, three Pygoscelis penguin species, the main krill consumers, were most numerous. The Adélie Penguin (P. adeliae) dominated among the penguins nesting in the investigated areas, reaching 23,661 breeding pairs in 1978. Two other penguin species were less abundant with population sizes of approximately 7,200 breeding pairs for the Chinstrap Penguin (P. antarcticus) and 3,100 breeding pairs for the Gentoo Penguin (P. papua) in the same year. During the following two decades, breeding populations of pygoscelid species experienced a declining trend and their numbers were reduced by 68.0% for Chinstrap, 67.1% for Gentoo, and 33.9% for Adélie Penguins. The data reported here represent a unique reference basis and provide valuable information about indicator species, suitable for comparison with contemporary observations of bird populations in the Antarctic Peninsula region, a place of rapidly occurring climate changes and intensive harvesting of marine living resources.

Sign in / Sign up

Export Citation Format

Share Document