scholarly journals INSIGHTS INTO THE SEA-LEVEL HISTORY OF THE SOUTH SHETLAND ISLANDS FROM GROUND PENETRATING RADAR ON LIVINGSTON ISLAND, ANTARCTICA

2020 ◽  
Author(s):  
Cameron Gernant ◽  
◽  
Alexander Simms ◽  
Regina DeWitt ◽  
Christopher Garcia ◽  
...  
Keyword(s):  
Sea Level ◽  
Ground Penetrating Radar ◽  
South Shetland Islands ◽  
The South ◽  
Shetland Islands ◽  
Livingston Island ◽  
History Of ◽  
Ground Penetrating ◽  
History Of The South

New trigonioid bivalves from the Early Jurassic to earliest Cretaceous of the Antarctic Peninsula region: systematics and austral paleobiogeography

1995 ◽  
Vol 69 (1) ◽  
pp. 66-84 ◽  
Author(s):  
Simon R. A. Kelly
Keyword(s):  
New Zealand ◽  
Antarctic Peninsula ◽  
Southern Africa ◽  
Late Jurassic ◽  
Early Jurassic ◽  
South Shetland Islands ◽  
Shetland Islands ◽  
Livingston Island ◽  
History Of ◽  
The Antarctic

New discoveries of trigonioid bivalves are documented from three areas in the Antartic Peninsula: the Fossil Bluff Group of Alexander Island, the Latady Formation of the Orville Coast, and the Byers Group of Livingston Island, South Shetland Islands. Eleven taxa are described, representing six genera or subgenera. The faunas are characterized by genera including Vaugonia (Vaugonia), the first Early Jurassic trigonioid recognized on the continent; Vaugonia (V.) and V. (Orthotrigonia?) in the Late Jurassic; and Iotrigonia (Iotrigonia), Myophorella (Scaphogonia), and Pterotrigonia (Pterotrigonia), which span the Jurassic–Cretaceous boundary, reaching the Berriasian stage. The following species are new: Pterotrigonia (P.) cramei n. sp., Pterotrigonia (P.) thomsoni n. sp., Vaugonia (V.) orvillensis n. sp., and V. (Orthotrigonia?) quiltyi n. sp. The faunas show affinities with those of New Zealand and southern Africa. Trigonioids characterize the shallower marine biofacies in the Jurassic of the Antarctic and reflect the principal shallowing events in the history of the region.

scholarly journals Variations in ice rafted detritus on beaches in the South Shetland Islands: a possible climate proxy

2004 ◽  
Vol 16 (3) ◽  
pp. 339-344 ◽  
Author(s):  
BRENDA L. HALL ◽  
ETHAN R. PERRY
Keyword(s):  
Antarctic Peninsula ◽  
Ocean Circulation ◽  
Late Holocene ◽  
Warming Trend ◽  
South Shetland Islands ◽  
The South ◽  
Shetland Islands ◽  
Livingston Island ◽  
The Antarctic ◽  
Glacial Advance

Raised beach ridges on Livingston Island of the South Shetland Islands display variations in both quantity and source of ice rafted detritus (IRD) received over time. Whereas the modern beach exhibits little IRD, all of which is of local origin, the next highest beach (∼250 14C yr BP) has large amounts, some of which comes from as far away as the Antarctic Peninsula. Significant quantities of IRD also were deposited ∼1750 14C yr BP. Both time periods coincide with generally cooler regional conditions and, at least in the case of the ∼250 yr old beach, local glacial advance. We suggest that the increases in ice rafting may reflect periods of greater glacial activity, altered ocean circulation, and/or greater iceberg preservation during the late Holocene. Limited IRD and lack of far-travelled erratics on the modern beach are both consistent with the ongoing warming trend in the Antarctic Peninsula region.

Two new species of Dorymenia (Mollusca: Solenogastres: Proneomeniidae) from the South Shetland Islands (Antarctica)

2000 ◽  
Vol 80 (5) ◽  
pp. 835-842 ◽  
Author(s):  
O. García-Alvarez ◽  
V. Urgorri ◽  
L. von Salvini-Plawen
Keyword(s):  
New Species ◽  
Comparative Study ◽  
South Shetland Islands ◽  
The South ◽  
Shetland Islands ◽  
Bransfield Strait ◽  
Livingston Island ◽  
Two New Species ◽  
Antarctic Benthos

This paper describes two new species from the genus Dorymenia (Mollusca: Solenogastres: Proneomeniidae): D. hesperidesi sp. nov. and D. menchuescribanae sp. nov., collected during the Spanish oceanographic expeditions for the study of Antarctic benthos, BENTART'94 and BENTART'95, carried out in the area of the Livingston Island (South Shetland Islands, Antarctica). A comparative study of main specific characteristics of species belonging to the genus Dorymenia found off the South Shetland Islands and in the Bransfield Strait (Antarctica), is also included.

Unregulated Sealing in the Dependencies

2007 ◽  
pp. 61-78
Author(s):  
A.B. Dickinson
Keyword(s):  
Eighteenth Century ◽  
Similar Pattern ◽  
Detailed Account ◽  
South Shetland Islands ◽  
The South ◽  
Shetland Islands ◽  
South Georgia ◽  
Late Eighteenth Century ◽  
Late Eighteenth ◽  
History Of

This chapter provides a detailed account of the growth of the unregulated sealing industry in the Dependencies, in the same format as Chapter Two. It begins with a history of the discovery of South Georgia, and follows the arrival of American and British vessels in late eighteenth century. It follows a similar pattern in the Falklands history, where sealing excursions declined during European and American wars, only to return with vigor from 1810 onwards - devastating seal stocks by the 1820s. The South Georgian sealing industry continued to decline during the nineteenth century, with numerous failed excursions recorded. In counterbalance to this, the South Shetland Islands saw a rise in sealing. A rise in sealing occurred during the brief sea fur boom of the 1860s and 1870s, where the chapter concludes.

A new Holocene relative sea level curve for the South Shetland Islands, Antarctica

2011 ◽  
Vol 30 (21-22) ◽  
pp. 3152-3170 ◽  
Author(s):  
E.P. Watcham ◽  
M.J. Bentley ◽  
D.A. Hodgson ◽  
S.J. Roberts ◽  
P.T. Fretwell ◽  
...  
Keyword(s):  
Sea Level ◽  
South Shetland Islands ◽  
Level Curve ◽  
The South ◽  
Relative Sea Level ◽  
Shetland Islands

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.

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