Between the land and ocean, diverse coastal ecosystems transform, store, and transport
material. Across these interfaces, the dynamic exchange of energy and matter is driven by …

Redox-driven biogeochemical element cycles play a central role in converting organic
matter in aquatic ecosystems. They also perform key functions such as removing nitrate …

This paper is the outcome of a community initiative to identify major unsolved scientific
problems in hydrology motivated by a need for stronger harmonisation of research efforts …

Microbiome research has increased dramatically in recent years, driven by advances in
technology and significant reductions in the cost of analysis. Such research has unlocked a …

Reactive oxygen species (ROS) are ubiquitous in the natural environment and play a pivotal
role in biogeochemical processes. However, the spatiotemporal distribution and production …

Rivers are important ecosystems under continuous anthropogenic stresses. The hyporheic
zone is a ubiquitous, reactive interface between the main channel and its surrounding …

While microplastic transport, fate, and effects have been a focus of studies globally, the
consequences of their presence on ecosystem functioning have not received the same …

Metformin is the first-line antidiabetic drug and one of the most prescribed medications
worldwide. Because of its ubiquitous occurrence in global waters and demonstrated …

Develo** an understanding of how groundwater (GW) and surface water (SW) systems
function and interact to impact water quantity, water quality, and ecosystem health provides …

Headwater catchments are the fundamental units that connect the land to the ocean.
Hydrological flow and biogeochemical processes are intricately coupled, yet their respective …