Results 241 to 250 of about 4,825,950 (295)

Surface Chlorophyll‐a Trends in the Mediterranean Sea: Seasonal Bloom Dynamics and Drivers

Journal of Geophysical Research: Oceans, Volume 131, Issue 10, October 2026.
Abstract Chlorophyll‐a (Chl‐a) is the most widely used proxy for phytoplankton biomass, bloom intensity, and trophic status in marine ecosystems. We analyzed 27 years (1998–2024) of 1 km‐resolution satellite‐derived Chl‐a data across the Mediterranean Sea and evaluated long‐term trends, bloom phenology, and seasonal variability in relation to sea ...
Christian Marchese, Simon Oiry, Emanuele Organelli, Maria Laura Zoffoli   +3 more
wiley   +1 more source

Seasonal and Spatial Variability of Silicon Cycle in Godavari Tidal River Zone

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 10, October 2026.
Abstract Dam regulation of tropical monsoonal rivers enhances seasonal contrasts in the tidal river zone (TRZ) hydrology, altering the delivery of dissolved silicon (DSi) to the coastal ocean. Here, we identify the drivers of Si cycling in the Godavari TRZ and quantify their implications for Si delivery to the Bay of Bengal (BoB). We analyzed elemental
Sarath Pullyottum Kavil, Jean Riotte, Ramananda Chakrabarti, V. V. S. S. Sarma, Arnaud Dapoigny, Gilles Reverdin, Damien Cardinal   +6 more
wiley   +1 more source

Organic Matter Dynamics and Biogeochemical Signatures in Lakes From the Prairies to Tundra in Western Canada

Journal of Geophysical Research: Biogeosciences, Volume 131, Issue 10, October 2026.
Abstract Climate‐driven poleward shifts of terrestrial ecosystems are expected to alter organic matter inputs and biogeochemical processes in northern lakes. In regions lacking long‐term observations, latitudinal gradients provide valuable space‐for‐time substitutions for predicting these changes.
Vilmantas Prėskienis, E. Henriikka Kivilä, Matthew J. Bogard, Dënë Cheecham‐Uhrich, Jules M. Blais, Milla Rautio   +5 more
wiley   +1 more source

Impacts of Nuclear War on Human Health From Changed Surface Ultraviolet Radiation

Earth's Future, Volume 14, Issue 10, October 2026.
Abstract Climate model simulations indicate that surface ultraviolet (UV) radiation would change after soot injection into the stratosphere during a nuclear war, due to the competing effects of ozone depletion and aerosol attenuation. Using climate model simulations, we evaluate UV impacts under two scenarios: a regional India‐Pakistan conflict ...
Shu Xu, Lili Xia, Alan Robock, Charles Bardeen, Simchan Yook, Sasha Madronich, Soko Setoguchi   +6 more
wiley   +1 more source

Spatial Variability and Long‐Term Trends in Winter Phytoplankton of the Warming Eastern Mediterranean Sea

Global Biogeochemical Cycles, Volume 40, Issue 10, October 2026.
Abstract The Eastern Mediterranean Sea (EMS) is among the fastest‐warming ocean regions, but the impacts of this warming on phytoplankton are unclear. Here, wintertime field observations were conducted across the EMS. These observations showed that small photosynthetic eukaryotes (<20 μm) dominated phytoplankton communities, collectively accounting for
Zhongwei Yuan, Alon Blachinsky, Tom Reich, Yoav Lehahn, Ilana Berman‐Frank, Eric P. Achterberg, Thomas J. Browning   +6 more
wiley   +1 more source

Amazon River Plume Control on Carbonate Chemistry in the Western Tropical Atlantic

Global Biogeochemical Cycles, Volume 40, Issue 10, October 2026.
Abstract The Amazon River Plume (ARP) modulates the carbonate system of the western Tropical Atlantic (WTA) through physical and biological processes, including freshwater dilution, biological carbon uptake, and circulation‐driven transport; however, its basin‐scale impact has not been quantitatively assessed.
Matheus Batista, Eunice Machado, Thiago Monteiro, Nathalie Lefèvre, Rodrigo Kerr   +4 more
wiley   +1 more source

Improving Micro– and Macro–Algae Speciation Mapping for Management: A Field‐Validated Sentinel‐2 and Sentinel‐3 Intercomparison in the Indian River Lagoon

GeoHealth, Volume 10, Issue 10, October 2026.
Abstract In recent years, the health of the Indian River Lagoon (IRL) on Florida's east coast has fluctuated due to recurring harmful algal blooms (HABs). These events typically involve cyanobacteria, dinoflagellates, or A. lagunensis (brown tide) causing water‐quality degradation and seagrass decline.
McKenzie L. Woodman, Edith A. Widder, Warren H. Falls, Joseph D. Ortiz   +3 more
wiley   +1 more source

Microbial Respiration Across Subtropical Eddies: Submesoscale Variability and Biogeochemical Drivers

Journal of Geophysical Research: Oceans, Volume 131, Issue 10, October 2026.
Abstract Island‐induced eddies from the Canary Islands region propagate southwestward along the Canary Eddy Corridor, exporting biological and biogeochemical properties to the oligotrophic open ocean. However, their contribution to organic matter remineralization, and consequently to the biological carbon pump, throughout their life cycle remains ...
J. L. García, M. F. Montero, X. A. Álvarez‐Salgado, J. Arístegui   +3 more
wiley   +1 more source

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Dynamics of Phytoplankton Communities Under Photoinhibition

Bulletin of Mathematical Biology, 2013
We analyzed a model of phytoplankton competition for light in a well-mixed water column. The model, proposed by Gerla et al. (Oikos 120:519-527, 2011), assumed inhibition of photosynthesis at high irradiance (photoinhibition). We described the global behavior through mathematical analyses, providing a general solution to the multi-species competition ...
Hsu, Sze-Bi, Lin, Chiu-Ju, Hsieh, Chih-Hao, Yoshiyama, Kohei   +3 more
openaire   +2 more sources

A mechanistic basis for underyielding in phytoplankton communities

Ecology, 2010
Species richness has been shown to increase biomass production of plant communities. Such overyielding occurs when a community performs better than its component monocultures due to the complementarity or dominance effect and is mostly detected in substrate‐bound plant communities (terrestrial plants or submerged macrophytes) where resource use ...
Schmidtke, Andrea, Gaedke, Ursula (Prof. Dr.), Weithoff, Guntram (PD Dr. rer. nat.)   +2 more
openaire   +3 more sources