Fairy ring disease affects epiphytic algal assemblages associated with the moss Sanionia uncinata (Hedw.) Loeske (Bryophyta) on King George Island, Antarctica

Extremophiles ◽  
2021 ◽  
Author(s):  
Paulo E. A. S. Câmara ◽  
Pedro V. Eisenlohr ◽  
Lívia C. Coelho ◽  
Micheline Carvalho-Silva ◽  
Eduardo T. Amorim ◽  
...  
Keyword(s):  
King George Island ◽  
Algal Assemblages ◽  
Sanionia Uncinata

scholarly journals Spatial variability models of CO2 emissions from soils colonized by grass (Deschampsia antarctica) and moss (Sanionia uncinata) in Admiralty Bay, King George Island

2010 ◽  
Vol 23 (1) ◽  
pp. 27-33 ◽  
Author(s):  
Eduardo de Sá Mendonça ◽  
Newton La Scala ◽  
Alan Rodrigo Panosso ◽  
Felipe N.B. Simas ◽  
Carlos E.G.R. Schaefer
Keyword(s):  
Spatial Variability ◽  
Spatial Pattern ◽  
Carbon Cycling ◽  
Vegetation Cover ◽  
Terrestrial Ecosystems ◽  
Deschampsia Antarctica ◽  
King George Island ◽  
Maritime Antarctica ◽  
Admiralty Bay ◽  
Sanionia Uncinata

AbstractSoil CO2 emission is an important part of the terrestrial carbon cycling and is influenced by several factors, such as type and distribution of vegetation. In this work we evaluated the spatial variability of soil CO2 emission in terrestrial ecosystems of maritime Antarctica, under two contrasting vegetation covers: 1) grass areas of Deschampsia antarctica Desv., and 2) moss carpets of Sanionia uncinata (Hedw.) Loeske. Highest mean emission was obtained for the Deschampsia (4.13 μmol m-2 s-1) developed on organic-rich soil with a strong penguin influence. The overall results indicate that soil temperature is not directly related to the spatial pattern of soil CO2 emission at the sites studied. Emission adjusted models were Gaussian and exponential with ranges varying from 1.3 to 2.8 m, depending on the studied site and vegetation cover.

Antioxidant activity of Sanionia uncinata , a polar moss species from King George Island, Antarctica

2008 ◽  
Vol 22 (12) ◽  
pp. 1635-1639 ◽  
Author(s):  
Hari Datta Bhattarai ◽  
Babita Paudel ◽  
Hyoung Seok Lee ◽  
Yoo Kyung Lee ◽  
Joung Han Yim
Keyword(s):  
Antioxidant Activity ◽  
King George Island ◽  
Moss Species ◽  
Sanionia Uncinata

scholarly journals Do new records of macrofungi indicate warming of their habitats in terrestrial Antarctic ecosystems?

2020 ◽  
Vol 10 (2) ◽  
pp. 281-296
Author(s):  
Götz Palfner ◽  
Josefa Binimelis-Salazar ◽  
Sandra Troncoso Alarcón ◽  
Gustavo Torres-Mellado ◽  
Gloria Gallegos ◽  
...  
Keyword(s):  
New Records ◽  
Field Studies ◽  
South Shetland Islands ◽  
King George Island ◽  
Shetland Islands ◽  
Terrestrial Environments ◽  
Sanionia Uncinata ◽  
The Antarctic ◽  
First Time

Relatively few macrofungi have been historically described from terrestrial environments of the Antarctic Peninsula and its associated archipelagos which are characterized by a moss-dominated vegetation, most of them preferentially or obligatorily associated with bryophytes. During the study of the influence of penguin rockeries to moss communities on the South Shetland Islands, the bryophilous basidiomycetes Rimbachia bryophila and Arrhenia cf. lilacinicolor were found for the first time on King George Island, growing on carpets of Sanionia uncinata. Other bryophilous fungi previously recorded in the same region are Arrhenia antarctica, Omphalina pyxidata and the rare Simocybe antarctica. The detection of the supposedly parasitic R. bryophila, together with other new observations of macrofungi on different hosts in the Antarctic bryoflora could indicate increased sexual reproduction. The likely increase of reproduction as an effect of warming on the terrestrial antarctic tundra should be proven by follow up field studies.

Antarctic harpacticoids exploit different trophic niches: a summer snapshot using fatty acid trophic markers (Potter Cove, King George Island)

2017 ◽  
Vol 568 ◽  
pp. 59-71
Author(s):  
E Werbrouck ◽  
A Vanreusel ◽  
D Deregibus ◽  
D Van Gansbeke ◽  
M De Troch
Keyword(s):  
Fatty Acid ◽  
King George Island ◽  
Potter Cove ◽  
Trophic Markers ◽  
Trophic Niches

Trophic niche of seabirds on the Barton Peninsula, King George Island, Antarctica

2021 ◽  
pp. 107443
Author(s):  
Jong-Ku Gal ◽  
Bohyung Choi ◽  
Bo-Kyung Kim ◽  
Jin-Woo Jung ◽  
Jun-Oh Min ◽  
...  
Keyword(s):  
Trophic Niche ◽  
King George Island ◽  
Barton Peninsula

scholarly journals Glacier Geometry Changes in the Western Shore of Admiralty Bay, King George Island over the Last Decades

Sensors ◽  
2021 ◽  
Vol 21 (4) ◽  
pp. 1532
Author(s):  
Mariusz Pasik ◽  
Krzysztof Bakuła ◽  
Sebastian Różycki ◽  
Wojciech Ostrowski ◽  
Maria Elżbieta Kowalska ◽  
...  
Keyword(s):  
Protected Area ◽  
Average Rate ◽  
King George Island ◽  
Glacier Surface ◽  
Glacial Retreat ◽  
Glacier Front ◽  
Longitudinal Slope ◽  
Western Shore ◽  
Rapid Temperature

This paper presents changes in the range and thickness of glaciers in Antarctic Specially Protected Area (ASPA) No. 128 on King George Island in the period 1956–2015. The research indicates an intensification of the glacial retreat process over the last two decades, with the rate depending on the type of glacier front. In the period 2001–2015, the average recession rate of the ice cliffs of the Ecology Glacier and the northern part of the Baranowski Glacier was estimated to be approximately 15–25 m a−1 and 10–20 m a−1, respectively. Fronts of Sphinx Glacier and the southern part of the Baranowski Glacier, characterized by a gentle descent onto land, show a significantly lower rate of retreat (up to 5–10 m a−1 1). From 2001 to 2013, the glacier thickness in these areas decreased at an average rate of 1.7–2.5 m a−1 for the Ecology Glacier and the northern part of the Baranowski Glacier and 0.8–2.5 m a−1 for the southern part of the Baranowski Glacier and Sphinx Glacier. The presented deglaciation processes are related to changes of mass balance caused by the rapid temperature increase (1.0 °C since 1948). The work also contains considerations related to the important role of the longitudinal slope of the glacier surface in the connection of the glacier thickness changes and the front recession.

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