NDLI: Phytoplankton Size and Taxonomic Composition in a Temperate Estuary Influenced by Monsoon

Content Provider	Springer Nature Link
Author	Sin, Yongsik Hyun, Bonggil Bach, Quang Dung Yang, Sungryull Park, Chul
Copyright Year	2011
Abstract	Temporal and spatial variations in phytoplankton in Asan Bay, a temperate estuary under the influence of monsoon, were investigated over an annual cycle (2004). Phytoplankton blooms started in February (>20 μg chl l$^{−1}$) and continued until April (>13 μg chl l$^{−1}$) during the dry season, especially in upstream regions. The percentage contribution of large phytoplankton (micro-sized) was high (78–95%) during the blooms, and diatoms such as Skeletonema costatum and Thalassiosira spp. were dominant. The precipitation and freshwater discharge from embankments peaked and supplied nutrients into the bay during the monsoon event, especially in July. Species that favor freshwater, such as Oscillatoria spp. (cyanobacteria), dominated during the monsoon period. The phytoplankton biomass was minimal in this season despite nutrient concentrations that were relatively sufficient (enriched), and this pattern differed from that in tropical estuaries affected by monsoon and in temperate estuaries where phytoplankton respond to nutrient inputs during wet seasons. The flushing time estimated from the salinity was shorter than the doubling time in Asan Bay, which suggests that exports of phytoplankton maximized by high discharge directly from embankments differentiate this bay from other estuaries in temperate and tropical regions. This implies that the change in physical properties, especially in the freshwater discharge rates, has mainly been a regulator of phytoplankton dynamics since the construction of embankments in Asan Bay.
Starting Page	839
Ending Page	852
Page Count	14
File Format	PDF
ISSN	15592723
Journal	Estuaries
Volume Number	35
Issue Number	3
e-ISSN	15592731
Language	English
Publisher	Springer-Verlag
Publisher Date	2012-01-04
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Phytoplankton dynamics Asan Bay Size structure Taxonomic composition Temperate estuary Freshwater & Marine Ecology Ecology Nature Conservation Environment Coastal Sciences Environmental Management
Content Type	Text
Resource Type	Article
Subject	Ecology Aquatic Science Ecology, Evolution, Behavior and Systematics

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