Distribution, sources and biogeochemistry of organic matter in a mangrove dominated estuarine system (Indian Sundarbans) during the pre-monsoon
作者： R. Ray , T. Rixen , A. Baum , A. Malik , G. Gleixner
DOI: 10.1016/J.ECSS.2015.10.017
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摘要: Abstract The sources and distribution of dissolved organic carbon (DOC), particulate (POC) inorganic (DIC) in the Indian Sundarbans mangrove Hooghly estuarine system were examined during pre-monsoon (summer) 2014. DOC is dominant form matter (OM) studied waters represents a mixture riverine sources. Microbial degradation land derived OM results high pCO 2 while enrichment δ 13 C-DIC ascribes to CO uptake by phytoplankton water. Higher 15 N nitrogen (PON) marine zone could be associated with enhanced production sustained nitrate from decomposition and/or imported Bay Bengal. Low contents elemental ratios (TN/TOC) indicate an intense mineralization transformation sediments, resulting insignificantly different compositions compared those three major sources: OM, leaf litter ( Avicennia marina ) situ production.
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