Results 111 to 120 of about 83,673 (292)

Novel Hydrurus species (Chrysophyceae) and their adaptations to high‐altitude European and Arctic snowfields

Journal of Phycology, EarlyView.
Abstract Colored snow caused by green algae (Chlorophyceae) is well known, but melting snowpacks can also harbor golden‐brown blooms consisting of Chrysophyceae. We collected 14 samples of cryoflora in the Austrian and Swiss Alps, the High Tatras in Slovakia, and in Arctic Svalbard. Eight laboratory unicellular flagellated strains were established from
Lenka Procházková, Robert A. Andersen, Thomas Leya, Tomáš Řezanka, Martin Lukeš, Linda Nedbalová, Daniel Remias   +6 more
wiley   +1 more source

Search for impact ejecta at the Paleocene–Eocene boundary

Meteoritics &Planetary Science, EarlyView.
Abstract Almost 10 years have passed since microtektites and microkrystites were reported for the Paleocene–Eocene (P–E) boundary in drill cores and outcrop in New Jersey and in ODP Hole 1051B in the western North Atlantic. The glassy spherules were interpreted to reflect an impact trigger for the Paleocene–Eocene Thermal Maximum (PETM).
Birger Schmitz, Yue Cai, Shiyong Liao, Victoriano Pujalte, Ting Ruan, Robert P. Speijer, Ellen Thomas   +6 more
wiley   +1 more source

Photosynthetic primary production in the Mesoproterozoic

New Phytologist, EarlyView.
Summary The Mesoproterozoic atmosphere had more CO2 and less O2 than at present. While the upper ocean was oxygenated, the deeper ocean was euxinic or ferruginous. Primary production was performed by Chlorobia, Cyanobacteria, Proteobacteria, and Archaeplastida.
Patricia Sánchez‐Baracaldo, John A. Raven   +1 more
wiley   +1 more source

Tracing recent large herbivore influence on soil carbon in permafrost and seasonally frozen Arctic ground using lipid biomarkers: a pilot study

Arctic Science
This study investigates the impact of large herbivores on soil organic matter (OM) stability in Arctic permafrost and seasonally frozen ground ecosystems, focusing on the potential preservation effect of grazing. Soil samples were collected from Siberian
Torben Windirsch, Kai Mangelsdorf, Guido Grosse, Juliane Wolter, Loeka L. Jongejans, Jens Strauss   +5 more
doaj   +1 more source

Forecasting Climate Change Using a Multivariate Cointegrated System

Oxford Bulletin of Economics and Statistics, EarlyView.
ABSTRACT A cointegrated vector equilibrium correction model of key climate variables including sea surface temperature, ocean heat content, Arctic sea‐ice extent and sea‐level change is built, driven by radiative forcing in which a stochastic trend arises due to anthropogenic emissions of greenhouse gases.
Jennifer L. Castle, Jurgen A. Doornik, David F. Hendry, Luke P. Jackson   +3 more
wiley   +1 more source

Alaskan water resources: Selected abstracts, 1974 [PDF]

, 1977
Compiled and Edited by Charles Hartman and Sheila. FinchAs one of the 51 Water Resources Research Institutes administered under the Water Resources Research Act of 1964, IWR receives a semimonthly journal entitled Selected Water Resources Abstracts.
Finch, Sheila, Hartman, Charles
core  

Methane fluxes, microbial activities and community structures in a wet tundra of the Lena Delta [PDF]

, 2005
Wet tundra environments of the Arctic are natural sources of the climate relevant trace gas methane. The underlying biogeochemical processes are not yet well understood.
Gattinger, A., Lipski, A., Schloter, M., Wagner, Dirk   +3 more
core  

The Northern Eurasia Earth Science Partnership: An Example of Science Applied to Societal Needs [PDF]

, 2009
Northern Eurasia, the largest landmass in the northern extratropics, accounts for ~20% of the global land area. However, little is known about how the biogeochemical cycles, energy and water cycles, and human activities specific to this carbon-rich, cold
Aizen, Vladimir B., Cartus, Oliver, Chen, Jiquan, Clark, Elizabeth A., Conard, Susan, Groisman, Pavel Ya., Kattsov, Vladimir M., Katzenberger, John, Krankina, Olga, Kukkonen, Jaakko, Lettenmaier, Dennis P., Machida, Toshinobu, Maksyutov, Shamil, Ojima, Dennis, Qi, Jiaguo, Romanovsky, Vladimir E., Santoro, Maurizio, Schmullius, Christiane C., Shiklomanov, Alexander I., Shimoyama, Kou, Shugart, Herman H., Shuman, Jacquelyn K., Sofiev, Mikhail A., Sokolik, Irina N.   +23 more
core   +1 more source

Terrestrial Analogs to Titan for Geophysical Research

Reviews of Geophysics, Volume 64, Issue 2, June 2026.
Abstract Saturn's moon Titan exhibits remarkable parallels to the Earth in many geophysical and geological processes not found elsewhere in the solar system at the present day. These include a nitrogen atmosphere with a condensible gas—methane—replacing the Earth's water, leading to an active meteorology with rainfall and surface manifestations ...
Conor A. Nixon, Samuel Birch, Audrey Chatain, Charles Cockell, Kendra K. Farnsworth, Peter M. Higgins, Stéphane Le Mouélic, Rosaly M. C. Lopes, Michael J. Malaska, Mohit Melwani Daswani, Kelly E. Miller, Catherine D. Neish, Olaf G. Podlaha, Jani Radebaugh, Lauren R. Schurmeier, Ashley Schoenfeld, Krista M. Soderlund, Anezina Solomonidou, Christophe Sotin, Nicholas A. Teanby, Tetsuya Tokano, Steven D. Vance   +21 more
wiley   +1 more source

Effects of warming on plant uptake of post‐fire nitrogen in an arctic heath tundra

New Phytologist, Volume 250, Issue 3, Page 1510-1521, May 2026.
Summary Postfire nitrogen (N) becomes increasingly important with the rising frequency of fires in arctic tundra, and climate warming is expected to accelerate plant recovery following fire. However, how plants differ in utilizing this postfire N and how their postfire N uptake responds to warming remains unknown.
Wenyi Xu, Per Lennart Ambus
wiley   +1 more source