Phytoplankton Dynamics and Its Further Implication for Particulate Organic Carbon in Surface Waters of a Tropical/Subtropical Estuary

Phytoplankton succession along with salinity in estuaries not only influences the riverine ecosystem but also interferes our understanding of riverine materials (e.g., organic carbon) transport to the sea. Four cruises were conducted in a mid-size river and its estuary (i.e., the Wanquan River) to e...

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Bibliographic Details
Published in:Estuaries and coasts 2015-05, Vol.38 (3), p.905-916
Main Authors: Zhu, Zhuo-Yi, Liu, Su-Mei, Wu, Ying, Li, Ying, Zhang, Jing, Hu, Jun
Format: Article
Language:English
Subjects:
Algae
Aquatic ecosystems
Bacillariophyceae
Biogeochemistry
Carbon
chlorophyll
Coastal Sciences
Dominant species
Earth and Environmental Science
Ecology
ecosystems
Environment
Environmental Management
Estuaries
Freshwater & Marine Ecology
Microscopy
Particulate organic carbon
Phytoplankton
Pigments
Rivers
Salinity
Scenedesmus
sea transportation
summer
Surface water
Water and Health
winter
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Summary:Phytoplankton succession along with salinity in estuaries not only influences the riverine ecosystem but also interferes our understanding of riverine materials (e.g., organic carbon) transport to the sea. Four cruises were conducted in a mid-size river and its estuary (i.e., the Wanquan River) to elucidate the riverine phytoplankton decease along increasing salinity and to quantify the amount of algal particulate organic carbon (POC) present in the system at different seasons. CHEMTAX calculations suggested that chlorophytes were the main chlorophyll a (CHLa) contributor in the dissolved inorganic phosphorus-limited river, which contributed over 60 % of the total CHLa. Microscopy further revealed that the dominant species was Scenedesmus sp. In the estuary, phytoplankton succession along with salinity in the estuary was observed. Chlorophyte contribution to total CHLa dramatically decreased from over 60 % in the river (S = 0) segment to
ISSN:1559-2723
1559-2731
DOI:10.1007/s12237-014-9866-6