Controls on Nutrient Cycling in Estuarine Mangrove Lake Sediments
نویسندگان
چکیده
We estimated the net exchange of nitrogen and phosphorus species using core incubations under light dark conditions in estuarine lakes that are aquatic interface between freshwater Everglades marine Florida Bay. These adjacent shallow water Bay environments sites where restoration hydrological flows will likely have largest impact on salinity. Sediment respiration, measured by oxygen uptake, averaged (±S.D.) ?2400 ± 1300, ?300 1000, 1900 1400 ?mol m?2 h?1 for incubations, gross photosynthesis estimates, respectively, with consistent uptake microelectrode profiles. Although most fluxes soluble reactive phosphorus, nitrate, N2–N were low both incubation conditions, we observed a number very high efflux events NH4+ during incubations. A significant decrease NH4+flux was light. The differences effluxes occurred periods coverage macrophyte Chara hornemannii Wallman, > 200 h?1. Increasing flow from is expected to expand lower salinity suitable Chara, therefore, diminish sediment may fuel algal blooms.
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ژورنال
عنوان ژورنال: Journal of Marine Science and Engineering
سال: 2021
ISSN: ['2077-1312']
DOI: https://doi.org/10.3390/jmse9060626