Phosphorous dynamics in a temperate intertidal estuary
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چکیده
منابع مشابه
Carbon and nitrogen cycling on intertidal mudflats of a temperate Australian estuary. I. Benthic metabolism
The light and dark inundated fluxes of O2 and total CO2 (TCO2), as well as the concentrations of chlorophyll a and phaeopigments, were measured (ex situ) on the upper and lower portions of 2 intertidal mudflats—1 in the upper Huon Estuary (salinity 4 to 32) and 1 in a marine side-arm of the estuary (salinity 17 to 34)—over 4 seasons. Dark-exposed fluxes of O2 and CO2 were also measured on the u...
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The estuarine nitrogen cycle can be substantially altered due to anthropogenic activities resulting in increased amounts of inorganic nitrogen (mainly nitrate). In the past, denitrification was considered to be the main ecosystem process removing reactive nitrogen from the estuarine ecosystem. However, recent reports on the contribution of dissimilatory nitrate reduction to ammonium (DNRA) to n...
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For a better understanding of the phosphorus dynamics and bioavailability in temperate climates, sequential chemical extraction techniques were used to study sediment P-pools distribution and relative importance in a eutrophicated estuary. Results indicate a shift in importance from the iron-bound P fraction to the CaCO3-bound P fraction with increasing salinity, which suggests a decrease in bi...
متن کاملCommunity dynamics and activity of ammonia-oxidizing prokaryotes in intertidal sediments of the Yangtze estuary.
Diversity, abundance, and activity of ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) were investigated using the ammonia monooxygenase α subunit (amoA) in the intertidal sediments of the Yangtze Estuary. Generally, AOB had a lower diversity of amoA genes than did AOA in this study. Clone library analysis revealed great spatial variations in both AOB and AOA communities alo...
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ژورنال
عنوان ژورنال: Estuarine, Coastal and Shelf Science
سال: 2004
ISSN: 0272-7714
DOI: 10.1016/j.ecss.2004.04.007