Relative importance of landscape versus local wetland characteristics for estimating wetland denitrification potential.

ABSTRACT: Wetlands can be significant sinks for N_r, via denitrification. There is a lack of understanding about factors controlling denitrification. Research suggests that hydrology, geomorphology, and nitrogen loading are dominant controls. We compared site-scale characteristics with denitrification enzyme activity (DEA) in wetlands along gradients of drainage basin land use to explore the relative importance of landscape and site-scale factors for determining denitrification potential. DEA rates ranged between 0.01-1.69 (μg N gdw^-1 hr^-1), with most sites falling at the lower end. Sites with higher DEA rates had higher percentages of soil carbon and nitrogen, concentrations of soil extractable NO₃ and percent loss on ignition. Sites with upstream agricult

SUBMITTER: Russell M 

PROVIDER: S-EPMC7788065 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature