scholarly journals The Vegetation of the South Shetland Islands and the Climatic Change

2020 ◽  
Author(s):  
Jair Putzke ◽  
Antonio Batista Pereira
Keyword(s):  
Climate Change ◽  
Food Web ◽  
Climatic Change ◽  
Plant Diversity ◽  
South Shetland Islands ◽  
The South ◽  
Shetland Islands ◽  
The World

Antarctica allows at the same time to study the effects of change on the environment with minimal anthropic interference and in the least modified conditions in the world regarding biodiversity and its relations. At the same time, it allows assessing its effects on an ecosystem of few species and with a food web that directly links the oceans to terrestrial organisms. The South Shetland Islands are located further north within Antarctic Maritime and are therefore more vulnerable to climate change. Part of the studies already carried out with vegetation in this archipelago are discussed with a focus on the effects already generated and on predictions about future changes in the structure and plant diversity of Antarctica.

Richard Sherratt's chart of the South Shetland Islands, 1821

Polar Record ◽  
1952 ◽  
Vol 6 (43) ◽  
pp. 362-365 ◽  
Author(s):  
R. Sherratt
Keyword(s):  
South Shetland Islands ◽  
The South ◽  
The Public ◽  
Shetland Islands ◽  
Good Fortune ◽  
The World ◽  
Weekly Journal

[1214] Since the discovery of these distant and desolate islands, manyaccounts have been published respecting them. But from what source soever the information has been derived, they all concur in describing them as barren, uninhabited, and in every respect dreary.It was our good fortune to be possessed of all the leading facts which related to them long before their existence was announced to the public; but at the particular desire of our correspondent, who was in the first vessel that ever touched on these inhospitable shores, we omitted giving it publicity until several weeks had elapsed; and it was not until some reports had found their way into the world, that our embargo was taken off. This circumstance enabled the conductor of a weekly journal to announce the existence of these distant lands to the public, just before the day of publication with us arrived. Of this incident he has readily availed himself; [1215] and in a recent number, has claimed the exclusive honour of having furnished the first public notice of this discovery.

scholarly journals First documented record of barn swallow (Hirundo rustica) in the Antarctic

2011 ◽  
Vol 32 (4) ◽  
pp. 355-360 ◽  
Author(s):  
Małgorzata Korczak-Abshire ◽  
Alexander Lees ◽  
Agata Jojczyk
Keyword(s):  
Passerine Bird ◽  
Hirundo Rustica ◽  
South Shetland Islands ◽  
King George Island ◽  
The South ◽  
Barn Swallow ◽  
Shetland Islands ◽  
Antarctic Convergence ◽  
The World ◽  
The Antarctic

First documented record of barn swallow (Hirundo rustica) in the Antarctic Here we report a photo-documented record of a barn swallow (Hirundo rustica) from the South Shetland Islands. We also review previous records of passerine vagrants in the Antarctic (south of the Antarctic Convergence Zone). This barn swallow is the first recorded member of the Hirundinidae family on King George Island and is only the second passerine recorded in the South Shetland Islands. This sighting, along with previous records of austral negrito and austral trush represent the southernmost sightings of any passerine bird anywhere in the world.

scholarly journals Epiphytic diatom community structure and richness is determined by macroalgal host and location in the South Shetland Islands (Antarctica)

PLoS ONE ◽  
2021 ◽  
Vol 16 (4) ◽  
pp. e0250629
Author(s):  
Andrea M. Burfeid-Castellanos ◽  
Rafael P. Martín-Martín ◽  
Michael Kloster ◽  
Carlos Angulo-Preckler ◽  
Conxita Avila ◽  
...  
Keyword(s):  
Climate Change ◽  
Species Richness ◽  
Primary Production ◽  
Image Annotation ◽  
South Shetland Islands ◽  
Ecological Niches ◽  
Deception Island ◽  
The South ◽  
Shetland Islands ◽  
Livingston Island

The marine waters around the South Shetland Islands are paramount in the primary production of this Antarctic ecosystem. With the increasing effects of climate change and the annual retreat of the ice shelf, the importance of macroalgae and their diatom epiphytes in primary production also increases. The relationships and interactions between these organisms have scarcely been studied in Antarctica, and even less in the volcanic ecosystem of Deception Island, which can be seen as a natural proxy of climate change in Antarctica because of its vulcanism, and the open marine system of Livingston Island. In this study we investigated the composition of the diatom communities in the context of their macroalgal hosts and different environmental factors. We used a non-acidic method for diatom digestion, followed by slidescanning and diatom identification by manual annotation through a web-browser-based image annotation platform. Epiphytic diatom species richness was higher on Deception Island as a whole, whereas individual macroalgal specimens harboured richer diatom assemblages on Livingston Island. We hypothesize this a possible result of a higher diversity of ecological niches in the unique volcanic environment of Deception Island. Overall, our study revealed higher species richness and diversity than previous studies of macroalgae-inhabiting diatoms in Antarctica, which could however be the result of the different preparation methodologies used in the different studies, rather than an indication of a higher species richness on Deception Island and Livingston Island than other Antarctic localities.

scholarly journals Small unmanned aerial vehicles for aeromagnetic surveys and their flights in the South Shetland Islands, Antarctica

Polar Science ◽  
2014 ◽  
Vol 8 (4) ◽  
pp. 342-356 ◽  
Author(s):  
Minoru Funaki ◽  
Shin-Ichiro Higashino ◽  
Shinya Sakanaka ◽  
Naoyoshi Iwata ◽  
Norihiro Nakamura ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicles ◽  
South Shetland Islands ◽  
The South ◽  
Shetland Islands ◽  
Aerial Vehicles

A new Antarctic foraminiferal species for detecting climate change in sub-Recent glacier-proximal sediments

2009 ◽  
Vol 21 (5) ◽  
pp. 439-448 ◽  
Author(s):  
Wojciech Majewski ◽  
Andrzej Tatur
Keyword(s):  
Climate Change ◽  
Climate Warming ◽  
The Arctic ◽  
South Shetland Islands ◽  
King George Island ◽  
Tidewater Glaciers ◽  
Admiralty Bay ◽  
Shetland Islands ◽  
Foraminiferal Species ◽  
Water Depths

AbstractCribroelphidium webbi sp. nov. is the only adequately described sub-Recent elphidiid foraminifer from Antarctica. In Admiralty Bay (King George Island, South Shetland Islands), it is found at several locations within inner fiord setting at water depths between 33 and 165 m, but most commonly shallower than 100 m. In outer basins this foraminifer is absent. In the cores analysed, C. webbi sp. nov. is present in well-constrained sub-Recent horizons that are clearly related to climate warming and deglaciation. These horizons represent a diachronous facies marker rather than a single stratigraphic layer. Cribroelphidium webbi sp. nov. shows clear association with retreating tidewater glaciers, therefore it is an important sensitive glacier-proximal indicator. It appears that it shares similar ecologic affinities with Cribroelphidium excavatum clavatum, which is widely distributed throughout the Arctic.

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