The critical zone (CZ) includes natural and anthropogenic environments, where life, energy
and matter cycles combine in complex interactions in time and space. Critical zone …

This review meticulously examines the dynamics of river microbiomes, with an emphasis on
the Ganges and Yamuna rivers of South Asia. These rivers are vital for both ecological and …

The hyporheic zone, where surface water and groundwater mix, is an important microbial
habitat where biogeochemical reactions influence water quality. We show that spatial …

Nonperennial streams dominate global river networks and are increasing in occurrence
across space and time. When surface flow ceases or the surface water dries, flow or …

Dissolved oxygen (DO) is critical for aquatic ecosystems, however, few studies have focused
on the long‐term DO dynamics in hyporheic zones, which are a function of both transport …

Hyporheic zones (HZ) are hotspots for biogeochemical reactions where groundwater and
surface water mix. River dam buildings and other hydrologic controls alter the sediment …

The input of nitrate and other agricultural pollutants in higher-order streams largely derives
from first-order streams. The streambed as the transition zone between groundwater and …

High-resolution mass spectrometry techniques are widely used in the environmental
sciences to characterize natural organic matter and, when utilizing these instruments …

Wildfires, which are increasing in frequency and severity in the western US, impact water
quality through increases in erosion, and transport of nutrients and metals. Meanwhile …

Hyporheic sediments are influenced by physical, biological, and chemical processes due to
the interactions with river water and has been shown to play an important role in the …