Headwater wetlands are important sites for carbon storage and emissions. While local- and landscape-scale factors are known to influence wetland carbon biogeochemistry, the spatial and temporal heterogeneity of these factors limits our predictive understanding of wetland carbon dynamics. To address this issue, we examined relationships between carbon dioxide (CO 2 ) and methane (CH 4 ) concentrations with wetland hydrogeomorph...

Globally significant quantities of carbon (C), nitrogen (N), and phosphorus (P) enter freshwater reservoirs each year. These inputs can be buried in sediments, respired, taken up by organisms, emitted to the atmosphere, or exported downstream. While much is known about reservoir-scale biogeochemical processing, less is known about spatial and temporal variability of biogeochemistry within a reservoir along the continuum from i...

Hydrogen peroxide (H 2 O 2 ) plays key roles in aquatic systems, including metal redox cycling and degradation of organic matter into bioavailable forms. Abiotic photoproduction, via photo‐oxidation of chromophoric dissolved organic matter, has generally been assumed to be the most important source of H 2 O 2 to freshwater systems in the daytime. However, the significance of other H 2 O 2 sources has not been previously examin...