Gas exchange across the air–water boundary of streams and rivers is a globally large
biogeochemical flux. Gas exchange depends on the solubility of the gas of interest, the gas …

Coastal salt marshes store large amounts of carbon but the magnitude and patterns of
greenhouse gas (GHG; ie, carbon dioxide (CO2) and methane (CH4)) fluxes are unclear …

Rivers substantially contribute to global greenhouse gas emissions, yet emissions from
headwater streams are poorly constrained. Here, we report dissolved concentrations of …

Existing analyses of salt marsh carbon budgets rarely quantify carbon loss as CO2 through
the air–water interface in inundated marshes. This study estimates the variability of partial …

The carbonate chemistry was investigated in the semiarid eutrophic Araruama Lagoon
(Brazil), one of the largest hypersaline coastal lagoons in the world. Spatial surveys during …

Estuaries and coastal waters are generally significant emitters of CO2 to the atmosphere.
Globally, submarine groundwater discharge (SGD) is a significant driver of inorganic carbon …

Coastal vegetated habitats like seagrass meadows can mitigate anthropogenic carbon
emissions by sequestering CO2 as “blue carbon”(BC). Already, some coastal ecosystems …

Abstract Carbon dioxide (CO 2) super-saturation in estuaries and the associated efflux to the
atmosphere is an important part of the global carbon cycle. However, the net global …

Subtropical seagrass meadows play a major role in the coastal carbon cycle, but the nature
of air–water CO2 exchanges over these ecosystems is still poorly understood. The complex …

Mangrove ecosystems with high sediment deposition and active carbon cycling are a source
of methane (CH4) to the coastal atmosphere. We investigated diurnal and seasonal …