BIOGEOCHEMISTRY OF NITROUS OXIDE PRODUCTION IN THE RED MANGROVE (Rhizophora mangle) FOREST SEDIMENTS
Jorge Bauza, Julio M. Morell and Jorge E. Corredor
Department of Marine Sciences
University of Puerto Rico
Mayaguez, Puerto Rico 00680
RUNNING HEAD: Nitrous Oxide in Mangrove Sediments
keywords: nitrous oxide, nitrification, mangrove forest
ABSTRACT
The present study was undertaken to quantify the emission and distribution of nitrous oxide and to explore its relation with pertinent physical and chemical parameters of the red mangrove forest sediment. Rates of N2O evolution, which ranged from 0.052 to 1.37 Ýmole.m-2.h-1 (overall mean = 0.495 Ýmole.m-2.h-1), are comparable to those of other ecosystems that has been previously studied. A significant diel flux change in nitrous oxide emission was observed. Dissolved nitrous oxide concentration averaged 0.149 nmole.cm-3 (SD = 0.09, n = 54) with a range from 0.096 to 0.574 nmole.cm-3. Dissolved and exchangeable......
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