Results 141 to 150 of about 13,726 (266)

Contrasting Net Community Production in the Oligotrophic Western North Pacific Subtropical Gyre During the Late Summers of 2020 and 2022: The Roles of Multiple Environmental Drivers

Journal of Geophysical Research: Oceans, Volume 131, Issue 6, June 2026.
Abstract Although the North Pacific Subtropical Gyre (NPSG) is among the most oligotrophic regions, its vast expanse means that small productivity shifts can alter the global carbon budget. We quantified net community production (NCP) from high‐resolution O2 ${\mathrm{O}}_{2}$/Ar measurements and gross primary production (GPP) from 18O incubations in ...
Inhee Lee, Doshik Hahm, Young Shin Kwon, Seon‐Eun Lee, Geun‐Ha Park, Young Ho Ko, Junhyeong Seo, Wonsun Park, Tae‐Wook Kim, Sok Kuh Kang   +9 more
wiley   +1 more source

Investigating Fine Particulate Matter in Streams Uncovers Peak Bacterial Activity in Agricultural Streams and on the Finest Particles

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 6, June 2026.
Abstract The processing of organic matter (OM) in stream ecosystems is a key component of the fluvial carbon cycle. While research has largely focused on the cycling of dissolved OM (DOM), suspended particles are increasingly recognized as active sites of OM cycling.
L. Haferkemper, G. Steniczka, S.‐K. Kämmer, M. J. Kainz, K. Attermeyer   +4 more
wiley   +1 more source

Method for automated high performance closed batch cultivation of gas-utilizing methanogens

AMB Express
To advance the utilization of microbial cell factories in gas fermentation processes, their physiological and biotechnological characteristics must be understood.
Walter Hofmann, Marco Orthofer, Nicolás Salas Wallach, Aquilla Ruddyard, Markus Ungerank, Christian Paulik, Simon K.-M. R. Rittmann   +6 more
doaj   +1 more source

Simulated Impacts of the 2023 Megadrought on Black Spruce Potential Productivity Across Canada

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 6, June 2026.
Abstract Black spruce (Picea mariana) is a dominant tree species across the Canadian boreal forest and a key contributor to national carbon dynamics. However, its growth and stand productivity are increasingly threatened by intensifying droughts, rising temperatures, and associated disturbances such as wildfire. In this study, we used the process‐based
Maxence Soubeyrand, Martin P. Girardin, Yan Boulanger   +2 more
wiley   +1 more source

Clarifying the trophic state concept to advance macroscale freshwater science and management

Ecosphere
For over a century, ecologists have used the concept of trophic state (TS) to characterize an aquatic ecosystem's biological productivity. However, multiple TS classification schemes, each relying on a variety of measurable parameters as proxies for ...
Michael F. Meyer, Benjamin M. Kraemer, Carolina C. Barbosa, Davi G. F. Cunha, Walter K. Dodds, Stephanie E. Hampton, César Ordóñez, Rachel M. Pilla, Amina I. Pollard, Joshua A. Culpepper, Alexander K. Fremier, Tyler V. King, Robert Ladwig, Dina M. Leech, Shin‐Ichiro S. Matsuzaki, Isabella A. Oleksy, Simon N. Topp, R. Iestyn Woolway, Ludmila S. Brighenti, Kate C. Fickas, Brian P. Lanouette, Jianning Ren, Mortimer Werther, Xiao Yang   +23 more
doaj   +1 more source

A Global, Daily Carbon Budget for Terrestrial Ecosystems Constrained by Satellite Observations of Soil Moisture: The SMAP Level 4 Carbon Product at Ten Years

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 6, June 2026.
Abstract The capacity of terrestrial ecosystems to retain carbon or sequester more atmospheric carbon is frequently investigated as a potential natural climate solution. However, global carbon inventories, national carbon assessments, and atmospheric inversion studies suffer from key limitations: infrequent estimates, low spatial resolution, or a lack ...
K. Arthur Endsley, John S. Kimball, Rolf H. Reichle, Joseph V. Ardizzone, Tobias Kundig, Thomas Colligan, Jens Heinke, Etsushi Kato, Jürgen Knauer, Lei Ma, Tobias Nützel, Qing Sun, Wenping Yuan   +12 more
wiley   +1 more source

Inter–Annual Variability of Model Parameters Improves Simulation of Annual Gross Primary Production

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 6, June 2026.
Abstract Parametric uncertainty can hinder land surface models (LSM) from accurately simulating carbon fluxes, such as gross primary production (GPP). These models generally cannot capture inter–annual variability (IAV) of fluxes well due to missing processes, and temporally varying parameters can partially alleviate this limitation.
Ranit De, Alexander Brenning, Markus Reichstein, Ladislav Šigut, Borja Ruiz Reverter, Mika Korkiakoski, Eugénie Paul‐Limoges, Peter D. Blanken, T. Andrew Black, Bert Gielen, Torbern Tagesson, Georg Wohlfahrt, Leonardo Montagnani, Sebastian Wolf, Jiquan Chen, Michael Liddell, Ankur R. Desai, Sujan Koirala, Nuno Carvalhais   +18 more
wiley   +1 more source

Incorporating Nitrifier‐Denitrification Improves Simulation of Nitrous Oxide and Nitric Oxide Emissions Under Intensive Nitrogen Application

Journal of Advances in Modeling Earth Systems, Volume 18, Issue 6, June 2026.
Abstract Nitrous oxide (N2O) and nitric oxide (NO) are key components of global biogeochemical nitrogen (N) cycle, contributing to global warming and atmospheric degradation. Process‐based models have been developed and applied to quantify N2O and NO fluxes from croplands.
Jia Deng, Rodney T. Venterea, Steve Frolking   +2 more
wiley   +1 more source

Comparative analysis of isoprostanoid profiles in Chlorella sorokiniana grown under autotrophic and heterotrophic conditions

International audienceOxylipins are bioactive lipid mediators derived from polyunsaturated fatty acids (PUFAs), with roles in oxidative stress responses, immunomodulation, and inflammation. While microalgae are recognized as valuable sources of oxylipins,
Domingues, M, Rosário, Domingues, M. Rosário, Vigor, Claire, Lopes, Diana, Oger, Camille, Rodrigues, Alexandre, M C, Rodrigues, Alexandre M. C., Reversat, Guillaume, Coelho, Natacha, Galano, Jean-Marie, Cardoso, Helena, Durand, Thierry, Conde, Tiago, Gros, Valérie   +13 more
core   +1 more source

Evidence for Limited Atmospheric CO2 Rise at the Miocene Climatic Optimum

Paleoceanography and Paleoclimatology, Volume 41, Issue 6, June 2026.
Abstract The Miocene Climatic Optimum (MCO; 16.9–14.7 Ma) was a relatively warm period with atmospheric CO2 averaging ∼500 μatm but CO2 change across its onset is poorly documented. We present a record of algal 13C‐fractionation covering the Early to Middle Miocene (∼18.5–15 Ma), with a gap at the MCO onset, from Ocean Drilling Program Site 959 in the ...
Evi Wubben, Joost Frieling, Yannick F. Bats, Linda van Roij, Kirsten de Haan, Gert‐Jan Reichart, Francien Peterse, Francesca Sangiorgi, Marcel T. J. van der Meer, Appy Sluijs   +9 more
wiley   +1 more source