Results 51 to 60 of about 28,767 (249)

Ground‐truthing of satellite imagery to assess seabird colony size: A test using Adélie penguins

Remote Sensing in Ecology and Conservation
Adélie penguin (Pygoscelis adeliae) colonies can be detected from space using very high‐resolution (VHR; 0.3–0.6 m resolution) satellite imagery, as the contrast between their guano and the surrounding terrain enables colony identification even when ...
Alexandra J. Strang, Dean P. Anderson, Esme Robinson, Grant Ballard, Annie E. Schmidt, David G. Ainley, Kerry Barton, Fiona Shanhun, Elissa Z. Cameron, Michelle A. LaRue   +9 more
doaj   +1 more source

ПРОШЛОЕ, СОВРЕМЕННОЕ И СЦЕНАРИЙ БУДУЩЕГО СОСТОЯНИЯ ОБЩЕГО СОДЕРЖАНИЯ ОЗОНА НАД СТАНЦИЕЙ «АКАДЕМИК ВЕРНАДСКИЙ» В АНТАРКТИЧЕСКИЙ СЕЗОН ОЗОНОВОЙ ДЫРЫ

Український антарктичний журнал, 2018
Целью работы является построение метода прогноза состояния озона над Украинской антарктической станцией «Академик Вернадский» в ближайшее десятилетие. В статье приводятся результаты исследования состояния озона над станцией «Академик Вернадский» с 1972 г.
V. Martazinova
doaj   +1 more source

Partners or passengers? Revisiting the association between diatoms and aquatic animals

Biological Reviews, EarlyView.
ABSTRACT Numerous studies have revealed the importance of research on the communities capable of colonizing animal surfaces (epibionts) and the animals on which they live (basibionts). Very few studies have considered epizoic diatoms, and there are gaps and biases in our knowledge, including the choice of basibionts, the methods used, and the habitats ...
Gianluca Vacca, Elisa Falasco, Francesca Bona   +2 more
wiley   +1 more source

Characterization of Staphylococcus intermedius Group Isolates Associated with Animals from Antarctica and Emended Description of Staphylococcus delphini

Microorganisms, 2020
Members of the genus Staphylococcus are widespread in nature and occupy a variety of niches, however, staphylococcal colonization of animals in the Antarctic environment has not been adequately studied.
Veronika Vrbovská, Ivo Sedláček, Michal Zeman, Pavel Švec, Vojtěch Kovařovic, Ondrej Šedo, Monika Laichmanová, Jiří Doškař, Roman Pantůček   +8 more
doaj   +1 more source

Xylose Acetals ‐ a New Class of Sustainable Solvents and Their Application in Enzymatic Polycondensation

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
Novel organic solvents with an unmodified carbohydrate core were synthesised both from D‐xylose and directly from biomass and were successfully used as reaction media for lipase biocatalysts to synthesise aliphatic and aromatic polyesters. Abstract The use of organic solvents in academic research and industry applications is facing increasing ...
Anastasia O. Komarova, Cicely M. Warne, Hugo Pétremand, Laura König‐Mattern, Johannes Stöckelmaier, Chris Oostenbrink, Georg M. Guebitz, Jeremy Luterbacher, Alessandro Pellis   +8 more
wiley   +1 more source

Basal reflectance and melt rates across the Ross Ice Shelf, Antarctica, from grounding line to ice shelf front

Journal of Glaciology
We present a 1000 km transect of phase-sensitive radar measurements of ice thickness, basal reflection strength, basal melting and ice-column deformation across the Ross Ice Shelf (RIS).
Daniel Price, Joseph Snodgrass, Wolfgang Rack, Heather Purdie, Christina Hulbe, Christian T. Wild, Craig Stevens, Oliver J. Marsh, Michelle Ryan, Adrian McDonald, Kelly Gragg, Martin Forbes   +11 more
doaj   +1 more source

Diphenyl Disulfide‐Promoted Racemization of 1‐Arylethanols for Photobiocatalytic Dynamic Kinetic Resolution

European Journal of Organic Chemistry, EarlyView.
Purple‐light activation of aggregated diphenyl disulfide unlocks the photocatalyst‐free racemization of 1‐arylethanols. The resulting sulfur radical process operates under mild conditions and couples with the enzymatic acylation by Candida antarctica lipase B in a photobiocatalytic dynamic kinetic resolution, revealing new opportunities for sulfur ...
Cristina Guolo, Stefano Parisotto, Cristina Prandi   +2 more
wiley   +1 more source

A Reassessment of Petrochemistry of ~1.2 Ga Tonalitic Rocks of the Northern Tugela Terrane, Natal Metamorphic Belt, South Africa: Further Constraints on the Evolution of This Belt

Geological Journal, EarlyView.
Our petrochemical studies on ~1.2 Ga granitoids of the Natal Metamorphic Belt, South Africa, do not suggest any property similar to Phanerozoic‐style subduction‐related granitoids. Plot of Kotongweni Tonalite in Y versus Sr diagram (after Moyen 2011), note that most samples have Sr/Y < 50.
Palesa Leuta, Saumitra Misra, Thembiso O. Basupi   +2 more
wiley   +1 more source

Lateral flexure of Erebus Ice Tongue due to ocean current forcing and fast ice coupling

Journal of Glaciology
Ice tongues are unconfined by land on their lateral margins and are sensitive to external forcing from the ocean. They are found sporadically around the Antarctic coast but are common in the western Ross Sea.
Rodrigo Gomez-Fell, Wolfgang Rack, Oliver J. Marsh, Heather Purdie   +3 more
doaj   +1 more source

Antarctic soil microbiomes encode structurally conserved and phylogenetically diverse beta‐lactamases

iMetaOmics, EarlyView.
An integrative metagenomic framework combining sequence, structural, and functional inference reveals a phylogenetically diverse and structurally conserved repertoire of putative beta‐lactamases across Antarctic soil microbiomes, with predominance of class A and subclass B3 enzymes and limited but detectable associations with mobile genetic elements ...
José Coche‐Miranda, Patricio Arros, Nicolás Canales, Camilo Berríos‐Pastén, Gastón Azziz, Rosalba Lagos, Julieta Orlando, Francisco P. Chávez, Andrés E. Marcoleta   +8 more
wiley   +1 more source