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 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.

Results from a 15-year study on hydrocarbon concentrations in water and sediment from Admiralty Bay, King George Island, Antarctica

2009 ◽  
Vol 21 (3) ◽  
pp. 209-220 ◽  
Author(s):  
Márcia C. Bícego ◽  
Eliete Zanardi-Lamardo ◽  
Satie Taniguchi ◽  
César C. Martins ◽  
Denis A.M. da Silva ◽  
...  
Keyword(s):  
Human Activities ◽  
Fossil Fuels ◽  
Sewage Treatment ◽  
Hydrocarbon Contamination ◽  
Research Station ◽  
King George Island ◽  
Admiralty Bay ◽  
Sediment Samples ◽  
Water And Sediment ◽  
Polycyclic Aromatic

AbstractAdmiralty Bay on the King George Island hosts the Brazilian, Polish and Peruvian research stations as well as the American and Ecuadorian field stations. Human activities in this region require the use of fossil fuels as an energy source, thereby placing the region at risk of hydrocarbon contamination. Hydrocarbon monitoring was conducted on water and sediment samples from the bay over 15 years. Fluorescence spectroscopy was used for the analysis of total polycyclic aromatic hydrocarbons (PAHs) in seawater samples and gas chromatography with flame ionization and/or mass spectrometric detection was used to analyse individual n-alkanes and PAHs in sediment samples. The results revealed that most sites contaminated by these compounds are around the Brazilian and Polish research stations due to the intense human activities, mainly during the summer. Moreover, the sediments revealed the presence of hydrocarbons from different sources, suggesting a mixture of the direct input of oil or derivatives and derived from hydrocarbon combustion. A decrease in PAH concentrations occurred following improvement of the sewage treatment facilities at the Brazilian research station, indicating that the contribution from human waste may be significant.

Pelagic larvae of benthic gastropods from shallow Antarctic waters of Admiralty Bay, King George Island

Polar Biology ◽  
2003 ◽  
Vol 26 (6) ◽  
pp. 359-364 ◽  
Author(s):  
Theresinha M. Absher ◽  
Guisla Boehs ◽  
Angela R. Feijó ◽  
Andrea C. da Cruz
Keyword(s):  
King George Island ◽  
Admiralty Bay ◽  
Pelagic Larvae ◽  
Antarctic Waters

scholarly journals GENOTOXICITY OF SHALLOW WATERS NEAR THE BRAZILIAN ANTARCTIC STATION "COMANDANTE FERRAZ" (EACF), ADMIRALTY BAY, KING GEORGE ISLAND, ANTARCTICA

2015 ◽  
Vol 63 (1) ◽  
pp. 63-70 ◽  
Author(s):  
Arthur José da Silva Rocha ◽  
Marina Tenório Botelho ◽  
Fabio Matsu Hasue ◽  
Maria José de Arruda Campos Rocha Passos ◽  
Caroline Patricio Vignardi ◽  
...  
Keyword(s):  
Comet Assay ◽  
Sewage Treatment ◽  
Control Site ◽  
Shallow Waters ◽  
Research Station ◽  
King George Island ◽  
Admiralty Bay ◽  
Significant Difference ◽  
Fuel Tanks ◽  
Antarctic Marine

Series of biomonitoring surveys were undertaken weekly in February 2012 to investigate the genotoxicity of the shallow waters around the Brazilian Antarctic Station "Comandante Ferraz" (EACF). The comet assay was applied to assess the damage to the DNA of hemocytes of the crustacean amphipods Gondogeneia antarctica collected from shallow waters near the Fuel Tanks (FT) and Sewage Treatment Outflow (STO) of the research station, and compare it to the DNA damage of animals from Punta Plaza (PPL) and Yellow Point (YP), natural sites far from the EACF defined as experimental controls. The damage to the DNA of hemocytes of G. antarctica was not significantly different between sites in the biomonitoring surveys I and II. In survey III, the damage to the DNA of animals captured in shallow waters near the Fuel Tanks (FT) and Sewage Treatment Outflow (STO) was significantly higher than that of the control site of Punta Plaza (PPL). In biomonitoring survey IV, a significant difference was detected only between the FT and PPL sites. Results demonstrated that the shallow waters in front of the station may be genotoxic and that the comet assay and hemocytes of G. antarctica are useful tools for assessing genotoxicity in biomonitoring studies of Antarctic marine coastal habitats.

Seasonal variation of pelagic invertebrate larvae in the shallow antarctic waters of Admiralty Bay (King George Island)

Polar Biology ◽  
2005 ◽  
Vol 29 (4) ◽  
pp. 294-302 ◽  
Author(s):  
Andrea S. Freire ◽  
Theresinha M. Absher ◽  
Andrea C. Cruz-Kaled ◽  
Yargos Kern ◽  
Karin L. Elbers
Keyword(s):  
Seasonal Variation ◽  
King George Island ◽  
Admiralty Bay ◽  
Antarctic Waters ◽  
Invertebrate Larvae

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.

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