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Ammonia-Oxidizing Archaea; Dissimilatory Nitrate Reduction; Francisco Bay Estuary; Salt-Marsh; Denitrifier Abundance; Bacterial Communities; Marine-Sediments; Diffusion Method; Ribosomal-Rna; Process Rates
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Full-Text Articles in Life Sciences
Genetic And Biogeochemical Investigation Of Sedimentary Nitrogen Cycling Communities Responding To Tidal And Seasonal Dynamics In Cape Fear River Estuary, Ja Lisa, Bk Song, Cr Tobias, De Hines
Genetic And Biogeochemical Investigation Of Sedimentary Nitrogen Cycling Communities Responding To Tidal And Seasonal Dynamics In Cape Fear River Estuary, Ja Lisa, Bk Song, Cr Tobias, De Hines
VIMS Articles
Tidal and seasonal fluctuations in the oligohaline reaches of estuaries may alter geochemical features that influence structure and function of microbial communities involved in sedimentary nitrogen (N) cycling. In order to evaluate sediment community responses to short-term (tidal) and long-term (seasonal) changes in different tidal regimes, nitrogen cycling rates and genes were quantified in three sites that span a range of tidal influence in the upper portion of the Cape Fear River Estuary. Environmental parameters were monitored during low and high tides in winter and spring. N-15 tracer incubation experiments were conducted to measure nitrification, denitrification, anaerobic ammonium oxidation (anammox), …