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article

Photo‐identification and satellite telemetry connect southern right whales from South Georgia Island (Islas Georgias del Sur) with multiple feeding and calving grounds in the southwest Atlantic

Amy S. Kennedy, Emma L. Carroll, Alexandre N. Zerbini, C. Scott Baker, more

Marine Mammal Science > 40 > 2 > n/a - n/a

The sub‐Antarctic waters of South Georgia Island (Islas Georgias del Sur, SG/IG) are a regularly visited feeding ground for southern right whales (Eubalaena australis, SRW) in the southwest Atlantic. Satellite telemetry and photo‐identification records were compared to better understand the role of SG/IG in the SRW migratory network. We present the first insights from SRW satellite‐tracked from the...

article

A review of salt occurrences in soils of the Transantarctic Mountains, Antarctica

Iain B. Campbell, Douglas S. Sheppard

Permafrost and Periglacial Processes > 34 > 3 > 287 - 295

Salts are pervasive throughout the Transantarctic Mountains cold desert soils and are derived primarily from atmospheric sources. Their composition is varied and dependent on local or regional climatic conditions. Their presence within soil profiles ranges from small flecks to continuous salt horizons and their abundance and distribution have a distinct relationship with climatic attributes and land...

article

H6N8 avian influenza virus in Antarctic seabirds demonstrates connectivity between South America and Antarctica

Marina Maria Moraes Seixas, Jansen Araújo, Scott Krauss, Thomas Fabrizio, more

Transboundary and Emerging Diseases > 69 > 6 > e3436 - e3446

Wild aquatic birds are the natural reservoirs of avian influenza viruses (AIVs). It is estimated that 100 million seabirds live in the Antarctic Peninsula and adjacent islands, regularly encountering migratory birds that use the islands to nest. Between 2010 and 2013, we collected samples from 865 seabirds in Elephant, King George and Livingston islands, around Antarctica Peninsula: chinstrap penguin...

article

Area and borders of Antarctic and permafrost—A review and synthesis

Wojciech Dobiński, Joanna E. Szafraniec, Bartłomiej Szypuła

Permafrost and Periglacial Processes > 34 > 1 > 37 - 51

The Antarctic continent is a crucial area for ultimate determination of permafrost extent on Earth, and its solution depends on the theoretical assumptions adopted. In fact, it ranges from 0.022 × 10⁶ to 14 × 10⁶ km². This level of inaccuracy is unprecedented in the Earth sciences. The novelty of the present study consists in determining the extent of Antarctic permafrost not based exclusively on...

article

Temperature as a likely driver shaping global patterns in mineralogical composition in bryozoans: implications for marine calcifiers under global change

Blanca Figuerola, Huw J. Griffiths, Malgorzata Krzeminska, Anna Piwoni‐Piorewicz, more

Ecography > 2023 > 1 > n/a - n/a

The Southern Ocean is showing one of the most rapid responses to human‐induced global change, thus acting as a sentinel of the effects on marine species and ecosystems. Ocean warming and acidification are already impacting benthic species with carbonate skeletons, but the magnitude of these changes to species and ecosystems remains largely unknown. Here we provide the largest carbonate mineralogical...

article

Molecular cloning, characterization, and homology modeling of serine hydroxymethyltransferase from psychrophilic bacterium Psychrobacter sp.

Yifan Wang, Quanfu Wang, Yanhua Hou, Yatong Wang

Journal of Basic Microbiology > 62 > 8 > 984 - 994

Serine hydroxymethyltransferase (SHMT) plays a significant role in the synthesis of l‐serine, purine, and thymidylate, which could be extensively applied in the treatment of cancers and the development of antibiotics. In this study, cloned from Psychrobacter sp. ANT206, a novel cold‐adapted SHMT gene (psshmt, 1257 bp) encoding a protein of 418 amino acids was expressed in Escherichia coli. The homology...

article

Seven snail species hidden in one: Biogeographic diversity in an apparently widespread periwinkle in the Southern Ocean

Claudio A. González‐Wevar, Nicolás I. Segovia, Sebastián Rosenfeld, Claudia S. Maturana, more

Journal of Biogeography > 49 > 8 > 1521 - 1534

Aim The Antarctic Circumpolar Current imparts significant structure to the Southern Ocean biota. The Antarctic Polar Front is a major barrier to dispersal, with separate species (or sometimes intraspecific clades) normally occurring either side of this feature. We examined the biogeographic structure of an apparent exception to this rule in a widespread genus of the Southern Ocean, the periwinkle...

article

Similar heterotrophic communities but distinct interactions supported by red and green‐snow algae in the Antarctic Peninsula

Mukan Ji, Weidong Kong, Hongzeng Jia, Chen Ding, more

New Phytologist > 233 > 3 > 1358 - 1368

Snow algae are predicted to expand in polar regions due to climate warming, which can accelerate snowmelt by reducing albedo. Green snow frequently occurs near penguin colonies, and red snow distributes widely along ocean shores. However, the mechanisms underpinning the assemblage of algae and heterotrophs in colored snow remain poorly characterized. We investigated algal, bacterial, and fungal...

article

Demographic sensitivity to environmental forcings: a multi‐trait, multi‐colony approach

Christophe Sauser, Karine Delord, Christophe Barbraud

Oikos > 130 > 6 > 943 - 957

Understanding the demographic responses of wild animal populations to different factors is fundamental to make reliable prediction of population dynamics. Both bottom–up processes and top–down regulation operate in terrestrial and marine ecosystems, but their relative contribution remains insufficiently known. In addition, direct weather effects on demographic rates have been overlooked in marine...

article

Spatial distribution, host specificity and genetic diversity of Onchobothrium antarcticum in the Southern Ocean

Gordeev, Ilya I., Polyakova, Tatyana A., Volkov, Alexander A., Gordeev, Ilya I., more

Polish Polar Research > 2021 > 42 > 4

article

The impact of expeditioners’ personality traits on their interpersonal interactions during long-term Antarctic expeditions

Kokun, Oleg, Bakhmutova, Larysa, Kokun, Oleg, Bakhmutova, Larysa

Polish Polar Research > 2021 > 42 > 1

article

New records of lichenized fungi for Antarctica

Halici, Mehmet Gökhan, Kahraman, Merve, Osmanoğlu, Osman, Bartak, Milos, more

Polish Polar Research > 2021

article

Phenolic and flavonoid contents in Deschampsia antarctica plants growing in nature and cultured in vitro

Twardovska, Maryana, Konvalyuk, Iryna, Lystvan, Kateryna, Andreev, Igor, more

Polish Polar Research > 2021 > 42 > 2

article

Anatomy of the generative structures of the Subantarctic flowering plant Colobanthus apetalus (Labill.) Druce

Milarska, Sylwia, Androsiuk, Piotr, Giełwanowska, Irena, Milarska, Sylwia, more

Polish Polar Research > 2021 > 42 > 1

article

The visualization of geophysical and geomorphologic data from the area of Weddell Sea by the generic mapping tools

Lemenkova, Polina, Lemenkova, Polina

Studia Quaternaria > 2021 > 38 > 1

article

The visualization of geophysical and geomorphologic data from the area of Weddell Sea by the generic mapping tools

Polina Lemenkova

Studia Quaternaria > 2021 > Vol. 38, Nr 1 > 19--32

The paper concerns GMT application for studies of the geophysical and geomorphological settings of the Weddell Sea. Its western part is occupied by the back-arc basin developed during geologic evolution of the Antarctic. The mapping presents geophysical settings reflecting tectonic formation of the region, glaciomarine sediment distribution and the bathymetry. The GlobSed grid highlighted the abnormally...

article

Unintentional transport of fungi propagules to Antarctic biome and the ability to develop at low temperatures

Anna Augustyniuk-Kram

Studia Ecologiae et Bioethicae > 2020 > 18 > 5 > 271-281

Filamentous fungi relatively easily disperse and colonize a variety of substrates, inhabiting various, often extreme environments. Therefore, they spread all over the world. The purpose of the research was to determine whether the propagules of filamentous fungi brought (accidentally transported) into the Antarctic biome by tourists and members of scientific expeditions are capable of developing at...

article

Antarctic ecosystem responses following ice‐shelf collapse and iceberg calving: Science review and future research

Jeroen Ingels, Richard B. Aronson, Craig R. Smith, Amy Baco, more

Wiley Interdisciplinary Reviews: Climate Change > 12 > 1 > n/a - n/a

The calving of A‐68, the 5,800‐km², 1‐trillion‐ton iceberg shed from the Larsen C Ice Shelf in July 2017, is one of over 10 significant ice‐shelf loss events in the past few decades resulting from rapid warming around the Antarctic Peninsula. The rapid thinning, retreat, and collapse of ice shelves along the Antarctic Peninsula are harbingers of warming effects around the entire continent. Ice shelves...

article

Detecting glacial refugia in the Southern Ocean

Sally C. Y. Lau, Nerida G. Wilson, Catarina N. S. Silva, Jan M. Strugnell

Ecography > 43 > 11 > 1639 - 1656

Throughout the Quaternary, the continental‐based Antarctic ice sheets expanded and contracted repeatedly. Evidence suggests that during glacial maxima, grounded ice eliminated most benthic (bottom‐dwelling) fauna across the Antarctic continental shelf. However, paleontological and molecular evidence indicates most extant Antarctica benthic taxa have persisted in situ throughout the Quaternary. Where...

article

Insights into the Production and Role of Nitric Oxide in the Antarctic Sea‐ice Diatom Fragilariopsis cylindrus

Fraser Kennedy, Andrew Martin, Andrew McMinn, K. Valentin

Journal of Phycology > 56 > 5 > 1196 - 1207

Nitric oxide (NO) is widely recognized as an important transmitter molecule in biological systems, from animals to plants and microbes. However, the role of NO in marine photosynthetic microbes remains unclear and even less is known about the role of this metabolite in Antarctic sea‐ice diatoms. Using a combination of microsensors, microfluidic chambers, and artificial sea‐ice tanks, a basic mechanistic...

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Search results

Photo‐identification and satellite telemetry connect southern right whales from South Georgia Island (Islas Georgias del Sur) with multiple feeding and calving grounds in the southwest Atlantic

A review of salt occurrences in soils of the Transantarctic Mountains, Antarctica

H6N8 avian influenza virus in Antarctic seabirds demonstrates connectivity between South America and Antarctica

Area and borders of Antarctic and permafrost—A review and synthesis

Temperature as a likely driver shaping global patterns in mineralogical composition in bryozoans: implications for marine calcifiers under global change

Molecular cloning, characterization, and homology modeling of serine hydroxymethyltransferase from psychrophilic bacterium Psychrobacter sp.

Seven snail species hidden in one: Biogeographic diversity in an apparently widespread periwinkle in the Southern Ocean

Similar heterotrophic communities but distinct interactions supported by red and green‐snow algae in the Antarctic Peninsula

Demographic sensitivity to environmental forcings: a multi‐trait, multi‐colony approach

Spatial distribution, host specificity and genetic diversity of Onchobothrium antarcticum in the Southern Ocean

The impact of expeditioners’ personality traits on their interpersonal interactions during long-term Antarctic expeditions

New records of lichenized fungi for Antarctica

Phenolic and flavonoid contents in Deschampsia antarctica plants growing in nature and cultured in vitro

Anatomy of the generative structures of the Subantarctic flowering plant Colobanthus apetalus (Labill.) Druce

The visualization of geophysical and geomorphologic data from the area of Weddell Sea by the generic mapping tools

The visualization of geophysical and geomorphologic data from the area of Weddell Sea by the generic mapping tools

Unintentional transport of fungi propagules to Antarctic biome and the ability to develop at low temperatures

Antarctic ecosystem responses following ice‐shelf collapse and iceberg calving: Science review and future research

Detecting glacial refugia in the Southern Ocean

Insights into the Production and Role of Nitric Oxide in the Antarctic Sea‐ice Diatom Fragilariopsis cylindrus

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