Results 31 to 40 of about 273,761 (310)

Zoogeographical relationships of the littoral ascidiofauna at the Antarctic Peninsula, in the Scotia Arc and in the Magellan region

Scientia Marina, 2005
Three Spanish Antarctic research cruises (Ant-8611, Bentart-94 and Bentart-95) were carried out in the South Shetland Archipelago (Antarctic Peninsula) and Scotia Arc (South Orkney, South Sandwich and South Georgia archipelagos) on the continental shelf ...
Alfonso A. Ramos-Esplá, Juan A. Cárcel, Mercedes Varela   +2 more
doaj   +1 more source

Morphological differentiation and phylogenetic homogeneity in Usnea aurantiaco-atra reveal the complexity of lichen symbiosis [PDF]

Polish Polar Research, 2018
Usnea aurantiaco-atra is the dominant flora around King George Island, Antarctica, whose specimens exhibited various phenotypes, even for those with the same ITS sequences in both mycobiont and photobiont. A comprehensive analysis of morphological traits
Shunan Cao, Hongyuan Zheng, Yunshu Cao, Chuanpeng Liu, Lingxiang Zhu, Fang Peng, Qiming Zhou   +6 more
doaj   +1 more source

Ice core evidence for a second volcanic eruption around 1809 in the Northern Hemisphere [PDF]

, 2006
A volcanic signal observed in ice cores from both polar regions six years prior to Tambora is attributed to an unknown tropical eruption in 1809. Recovery of dacitic tephra from the 1809 horizon in a Yukon ice core (Eclipse) that is chemically distinct ...
Germani, Mark S, Kreutz, K, Wake, Cameron P., Whitlow, Sallie I, Yalcin, Kaplan   +4 more
core   +3 more sources

Expression patterns of molecular chaperone genes in Antarctic psychrophilic yeast, Glaciozyma antarctica PI12 in response to heat stress [PDF]

Polish Polar Research, 2019
Microbes living in the polar regions have some common and unique strategies to respond to thermal stress. Nevertheless, the amount of information available, especially at the molecular level is lacking for some organisms such as Antarctic psychrophilic ...
Nur Athirah Yusof, Clemente Michael Vui Ling Wong, Abdul Munir Abdul Murad, Farah Diba Abu Bakar, Nor Muhammad Mahadi, Ahmad Yamin Abdul Rahman, Nursyafiqi Zainuddin, Mohd Nazalan Mohd Najimudin   +7 more
doaj   +1 more source

Effects of hydrocarbon spills on the temperature and moisture regimes of Cryosols in the Ross Sea region [PDF]

, 2002
Hydrocarbon spills have occurred on Antarctic soils where fuel oils are utilized, moved or stored. We investigated the effects of hydrocarbon spills on soil temperature and moisture regimes by comparing the properties of existing oil contaminated sites ...
Aislabie, Jackie M., Balks, Megan R., Campbell, Iain B., Kimble, John M., Paetzold, Ron F.   +4 more
core   +4 more sources

Anatomical variations of Deschampsia antarctica É. Desv.plants from distant Antarctic regions, in vitro culture, and in relations to Deschampsia caespitosa (L.) P. Beauv. [PDF]

Polish Polar Research, 2019
This paper presents a comparative study on the anatomy of the Antarctic hairgrass (Deschampsia antarctica É. Desv.) from natural populations of two distant maritime Antarctic regions: the Argentine Islands (Antarctic Peninsula region) and the Point ...
Nataliia Nuzhyna, Ivan Parnikoza, Oksana Poronnik, Iryna Kozeretska, Viktor Kunakh   +4 more
doaj   +1 more source

Climate Change and invasibility of the Antarctic benthos [PDF]

, 2007
Benthic communities living in shallow-shelf habitats in Antarctica (<100-m depth) are archaic in their structure and function. Modern predators, including fast-moving, durophagous (skeleton-crushing) bony fish, sharks, and crabs, are rare or absent ...
A Brandt, A Brandt, A Brandt, A Brandt, A Clarke, A Clarke, A Clarke, A Clarke, A Clarke, AL Allcock, Andrew Clarke, BA Seibel, Brad A. Seibel, Cheryl D. Wilga, D Thies, DA Hodgson, Daniel B. Blake, DS Coombs, EW Dawson, G Chapelle, GA Knox, GA Lovrich, GE Hofmann, GJ Vermeij, JC Carrier, JE Werner, JH Lipps, JM Raguá-Gil, JP Kennett, JS Pearse, JT Eastman, JT Eastman, JW Wakeling, L Watling, LC Ivany, LI Comoglio, Lloyd S. Peck, LS Peck, M Klages, MA Bitner, P Huybrechts, PA Fields, PD Glorioso, PM Arnaud, Pörtner H-O, R Revelle, RB Aronson, Richard B. Aronson, RJ Menzies, RM Feldmann, S Thatje, S Thatje, SM Stanley, Snelgrove PVR, ST Ahyong, Sven Thatje, T Antezana, T Brey, TJ Page, U Piatkowski, WE Arntz, WE Arntz, WE Arntz   +62 more
core   +1 more source

Türkiye's milestones in Antarctica and main arguments in its motivation [PDF]

Polish Polar Research
This study aims to clarify the fundamental arguments underlying Turkish motivation regarding the Antarctic Continent. The article asserts that Türkiye's motivation is grounded in its scientific endeavors, aligned with the principles of the Antarctic ...
Ferhat Kökyay, M. Hakan Keskin
doaj   +1 more source

Natural variability of major and trace elements in non-ornithogenic Gelisoils at Edmonson Point, northern Victoria Land, Antarctica [PDF]

Polish Polar Research, 2018
Antarctica is perceived as one of the most pristine environments on Earth, though increasing human activities and global climate change raise concerns about preserving the continent’s environmental quality. Limited in distribution, soils are particularly
Steven D. Emslie, Jerzy Smykla, Ewa Szarek-Gwiazda, Marek Drewnik, Wiesław Knap   +4 more
doaj   +1 more source

Influence of basal melting on ice surface fracture and glacier retreat: A case study at Pine Island Glacier [PDF]

Polish Polar Research
Pine Island Glacier (PIG) is one of the most dynamic ice streams in West Antarctica, with significant basal melting and ice shelf retreat profoundly influencing its behavior.
Boya Yan, Baojun Zhang, Pei Jiang, Qian Li, Yunsi Wu, Mingliang Liu   +5 more
doaj   +1 more source