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Dissolved organic nitrogen (DON) represents a large percentage of the total nitrogen in rivers and estuaries, and can contribute to coastal eutrophication and hypoxia. This study reports on the composition and bioavailability of DON along the Caloosahatchee River (Florida), a heavily managed system receiving inputs from Lake Okeechobee as well as agricultural and urban runoff from the surrounding...
Fires have been proposed as one of the important options to manage and restore degraded wetlands through changing nutrient regimes; however, their effects on nutrient dynamics and community shift have not been studied sufficiently. In this study, wetland ecosystem model (WEM) was enhanced by incorporating plant competition, and applied to a moderately phosphorus-enriched area in the Everglades with...
Redox potential impacts wetland ecosystem functions and processes. This study assessed the temporal and spatial patterns and variability of soil redox potential in relation to: 1) hydrology, 2) soil phosphorus (P) enrichment, and 3) dominant vegetation community in an Everglades wetland. Probes installed for 2-week periods required 8 to 10 days for measurements to stabilize, considerably longer than...
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