Results 1 to 10 of about 271,538 (292)

Changes in Chlorophyll a fluorescence and DNA as a plant response to UV-B radiation in Gnaphalium vira-vira [PDF]

open access: yesPolish Polar Research, 2022
Ozone depletion at southern latitudes has recently increased the fluence of ultraviolet-B (UV-B) radiation striking the ground. This phenomenon has sparked much interest in unravelling the effects of this harmful radiation on living systems.
Pedro Cuadra   +4 more
doaj   +1 more source

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

open access: yesPolish Polar Research, 2021
The paper presents data on the total phenolic and flavonoid content in Deschampsia antarctica È. Desv. plants collected from natural habitats, plants cultured in vitro, regenerated plants, and plants cultivated in a growth chamber.
Maryana Twardovska   +5 more
doaj   +1 more source

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

open access: yesPolish Polar Research, 2021
This study investigated the details of the morphological and anatomical structure of the generative organs of the Subantarctic flowering plant, belonging to the family Caryophyllaceae - Colobanthus apetalus (Labill.) Druce.
Sylwia Milarska   +2 more
doaj   +1 more source

Effect of polyoxyethylene sorbitan monooleate (Tween 80) on exopolysaccharide and biomass composition of psycchrophilic yeast [PDF]

open access: yesPolish Polar Research, 2023
Studies on the surface-active agents added during the cultivation process proved their effect on the synthesized bioproducts. The biosynthesis and accumulation of exopolysaccharide and biomass by Antarctic producer Cryptococcus laurentii AL65 were ...
Snezhana Rusinova-Videva   +5 more
doaj   +1 more source

Palmelloid formation in the Antarctic psychrophile, Chlamydomonas priscuii, is photoprotective

open access: yesFrontiers in Plant Science, 2022
Cultures of the obligate, Antarctic psychrophile, Chlamydomonas priscuii grown at permissive low temperature (8°C) are composed of flagellated, single cells, as well as non-motile, multicellular palmelloids. The relative proportions of the two cell types
Beth Szyszka-Mroz   +4 more
doaj   +1 more source

Antarctic genomics [PDF]

open access: yesComparative and Functional Genomics, 2004
AbstractWith the development of genomic science and its battery of technologies, polar biology stands on the threshold of a revolution, one that will enable the investigation of important questions of unprecedented scope and with extraordinary depth and precision.
Clark, Melody S   +11 more
openaire   +2 more sources

Experimental research on the thermal method of drilling by melting the well in ice mass with simultaneous controlled expansion of its diameter

open access: yesЗаписки Горного института, 2022
During the seasonal work of the 64th Russian Antarctic Expedition in 2018-2019 at the “Vostok” drilling facility named after B.B.Kudryashov (“Vostok” station, Antarctic) specialists of Saint Petersburg Mining University conducted experimental ...
Danil V. Serbin, Andrey N. Dmitriev
doaj   +1 more source

Antarctic and Sub-Antarctic Asteroidea database [PDF]

open access: yesZooKeys, 2018
The present dataset is a compilation of georeferenced occurrences of asteroids (Echinodermata: Asteroidea) in the Southern Ocean. Occurrence data south of 45°S latitude were mined from various sources together with information regarding the taxonomy, the sampling source and sampling sites when available.
Moreau, Camille   +20 more
openaire   +8 more sources

Extreme ecological response of a seabird community to unprecedented sea ice cover [PDF]

open access: yesRoyal Society Open Science, 2015
Climate change has been predicted to reduce Antarctic sea ice but, instead, sea ice surrounding Antarctica has expanded over the past 30 years, albeit with contrasted regional changes.
Christophe Barbraud   +2 more
doaj   +1 more source

Influence of Sea-Ice Anomalies on Antarctic Precipitation Using Source Attribution in the Community Earth System Model [PDF]

open access: yes, 2020
We conduct sensitivity experiments using a general circulation model that has an explicit water source tagging capability forced by prescribed composites of pre-industrial sea-ice concentrations (SICs) and corresponding sea surface temperatures (SSTs) to
Fyke, Jeremy G.   +7 more
core   +3 more sources

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