Results 121 to 130 of about 91,538 (269)

Spatial patterns in the evolution of Cenozoic dynamic topography and its influence on the Antarctic continent [PDF]

, 2013
Our knowledge of dynamic topography in Antarctica remains in an infancy stage compared to other continents. We assess the space-time variability in dynamic topography in Antarctica by analysing grids of global dynamic topography in the Cenozoic (and late
Anderson, L., Eagles, Graeme, Ferraccioli, F., Ritsema, J., Steinberger, B.   +4 more
core  

Dominance and toxicity without lethality: Exploring biomass, cyanometabolites, and Daphnia responses across Cyanobacterial strains

Journal of Phycology, EarlyView.
Abstract Cyanobacteria are cosmopolitan, important components of biomass with a remarkable ability to synthesize a diverse array of bioactive compounds, some of which may have toxic effects on other organisms and ecosystems. In this study, filamentous cyanobacterial strains isolated predominantly from temperate European freshwaters (Aphanizomenon ...
Łukasz Wejnerowski, Tamara Dulić, Sultana Akter, Michał Rybak, Agnieszka Piasecka, Jakub Szymkowiak, Oskar Kamiński, Anna Czerepska, Filip Pniewski, Zorica Svirčev, Ewa Poniecka, Krzysztof Zawierucha, Katarzyna Taylor, Marcin Krzysztof Dziuba, Jussi Meriluoto   +14 more
wiley   +1 more source

Microbial Endolithic Community at Meteor Crater

Meteoritics &Planetary Science, EarlyView.
Abstract Postimpact recovery and evolution in response to climate changes produced a modern ecosystem at Meteor Crater dominated by a grassland and woodland of piñon and juniper, which has been used to evaluate floral and megafaunal consequences of impact cratering during the Phanerozoic Eon of complex life.
David A. Kring, Charles S. Cockell
wiley   +1 more source

Causes of the Abrupt and Sustained 2016–2023 Antarctic Sea‐Ice Decline: A Sea Ice–Ocean Model Perspective

Geophysical Research Letters
Antarctic sea ice, which undergoes large seasonal changes and plays a crucial role in the global climate system, showed a gradual increasing trend in its extent from the late 1970s to 2015 but experienced a sharp decline in 2016, followed by record lows ...
K. Kusahara, H. Tatebe
doaj   +1 more source

Fluxes of microbes, organic aerosols, dust, sea-salt Na ions, non-sea-salt Ca ions, and methanesulfonate onto Greenland and Antarctic ice [PDF]

, 2009
Using a spectrofluorimeter with 224-nm laser excitation and six emission bands from 300 to 420 nm to measure fluorescence intensities at 0.3-mm depth intervals in ice cores, we report results of the first comparative study of concentrations of microbial ...
P. B. Price, R. A. Rohde, R. C. Bay
core  

Whole genome sequencing of historical specimens from the world's largest fungal collection yields high‐quality assemblies

New Phytologist, EarlyView.
Summary High‐throughput molecular studies of museum specimens (museomics) have great potential in biodiversity research, but fungal historical collections have scarcely been examined, leading to no comprehensive methodological assessments. Here we present a whole genome sequencing (WGS) project conducted at the Fungarium of the Royal Botanic Gardens ...
Torda Varga, Roseina Woods, Frances Pitsillides, Rowena Hill, Alona Yu Biketova, Theo Llewellyn, Brandon J. P. Shaw, Emily Hodgson, Brigid Wong, Jasmine Le, Josepha Becker, Alexander J. Bradshaw, Seth L. E. Blake, Clementine Geeves, Quentin Levicky, Lottie Goodman, Ruben L. Mole, Sidney L. Reed, M. Carly Lin, Emily Read, Keenan Harris, Raquel Pino‐Bodas, László G. Nagy, Anna Bazzicalupo, Ester Gaya   +24 more
wiley   +1 more source

Report on the geomorphological survey in the Soya Coast (JARE-61)

Antarctic Record, 2020
The Antarctic Ice Sheet is a major source of future sea-level rise due to global warming. Reconstruction of the past Antarctic Ice Sheet is essential to understand the mechanism of the Antarctic Ice Sheet response to global and regional climate changes ...
Takeshige Ishiwa, Yuki Tokuda, Takuya Itaki, Satoshi Sasaki   +3 more
doaj   +1 more source

Ambient noise under Antarctic sea ice [PDF]

The Journal of the Acoustical Society of America, 1975
Underwater ambient noise spectra and amplitude distributions are described for data recorded during late spring conditions under the ice in McMurdo Sound, Antarctica. The ice was fast to the shore and provided 10/10 cover at the time. While the ambient noise was characterized by intense biological activity a diurnal, nonbiological component became ...
openaire   +1 more source

Role of extracellular carbonic anhydrase in the polar diatom Fragilariopsis cylindrus

New Phytologist, EarlyView.
Summary Diatoms are major primary producers in productive polar oceans, where cold temperatures and high CO2 solubility raise questions as to whether they rely on the CO2‐concentrating mechanism (CCM) to saturate photosynthesis. Knowledge of CCM function will help better predict the sensitivity of diatom primary production to warming and acidifying ...
Meng Li, Jodi N. Young
wiley   +1 more source

A 700 year record of Southern Hemisphere extratropical climate variability [PDF]

, 2004
Annually dated ice cores from West and East Antarctica provide proxies for past changes in atmospheric circulation over Antarctica and portions of the Southern Ocean, temperature in coastal West and East Antarctica, and the frequency of South Polar ...
Curran, Mark AJ, Goodwin, Ian D, Kreutz, K, Maasch, Kirk A, Mayewski, Paul A, Meyerson, E A, Morgan, Vin, Souney, Joseph M, Jr, Steig, Eric J, van Ommen, Tas D, White, James W.C.   +10 more
core   +1 more source