Results 221 to 230 of about 135,649 (294)
Limnology and Oceanography, Volume 71, Issue 9, September 2026.Abstract Sediments in productive coastal regions are hotspots of hydrogen sulfide (H2S) production through microbial sulfate reduction. Under anoxic seafloor conditions, H2S can escape the sediment and accumulate in bottom waters, where elevated concentrations render the benthic environment toxic, posing ecological and economic risks.
Timo Spiegel +9 more
wiley +1 more source
Limnology and Oceanography Letters, Volume 11, Issue 5, September 2026.Abstract The Northern Amazon River Plume plays a crucial role in carbon sequestration and nitrogen cycling. This study quantified NO3− budgets along the plume during a period of high discharge, revealing NO3− uptake rates in excess of inputs from riverine sources and nitrification beyond 5°N.
Noémie Choisnard +4 more
wiley +1 more source
Back to the pre-industrial age? FAOSTAT statistics of food supply reveal radical dietary changes accompanied by declining body height, rising obesity rates, and declining phenotypic IQ in affluent Western countries. [PDF]
Ann MedGrasgruber P.
europepmc +1 more source
Influence of the geographical origin on substance concentrations in herring as basis for dietary exposure assessments. [PDF]
EFSA J, 2019 Fechner C +4 more
europepmc +1 more source
Limnology and Oceanography Letters, Volume 11, Issue 5, September 2026.Abstract The biotic component of the marine silica cycle strongly influences global biogeochemical cycling. Active uptake of dissolved silicic acid (dSi) occurs via silicon transporters (SITs), first characterized in diatoms but widely distributed in eukaryotes. Studying SITs and SIT‐like (SIT‐L) gene transcripts provides insights into the dynamics and
Yelena Churakova +7 more
wiley +1 more source
Status and future of seed conservation of threatened plants in the post‐2020 era
PLANTS, PEOPLE, PLANET, Volume 8, Issue 5, Page 1763-1777, September 2026.Ambitious targets have been set to backup seeds of threatened plants by the global strategy for plant conservation (GSPC), but it is unclear in how far these targets have been met and how seed collection should be organized to meet future challenges. Here, we provide an overview of the status of 44 countries in achieving seed conservation targets.
Andreas Ensslin +130 more
wiley +1 more source
Small, Volume 22, Issue 49, 1 September 2026.This approach addresses a major challenge in tissue engineering: creating larger, vascularized tissues. Microvascular networks in liver spheroids are developed through self‐organization mediated by mesenchymal stem cells. These spheroids are maintained in serum‐reduced or serum‐free medium and serve as building blocks to form planar tissue layers ...
Alina Filatova +10 more
wiley +1 more source
Small Science, Volume 6, Issue 9, September 2026.Stabilizing earth‐abundant catalysts for acidic oxygen evolution remains a major challenge for PEM water electrolysis. Here, Nb/F co‐modification electronically tunes MnO2 and stabilizes the Mn3+/Mn4+ redox equilibrium, suppressing overoxidation and structural degradation during acidic oxygen evolution, thereby enhancing the activity and durability of ...
Vimanshu Chanda +12 more
wiley +1 more source
The Importance and Mechanics of Near‐Seafloor Oxygenation Events in Shallow Coastal Environments
Journal of Geophysical Research: Oceans, Volume 131, Issue 9, September 2026.Abstract Bottom‐water oxygen (O2) possibly constitutes the strongest regulating factor on ecosystem function of the seafloor environment. The conventional view of bottom‐water O2 regulation in temperate regions is a strong seasonal variability imposed by deposition of fresh, labile organic carbon following the spring and fall plankton bloom generating ...
Jonas P. Fredriksson +4 more
wiley +1 more source
Journal of Applied Ecology, Volume 63, Issue 9, September 2026.While border infrastructure disrupts wildlife movement, conservation interventions need not hinge on resolving the broader conflicts that created these barriers. Instead, targeted measures—including wildlife passages through existing barriers, improved landscape permeability at rivers and less hazardous security technologies—can help mitigate ...
Katarzyna Nowak +9 more
wiley +1 more source