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http://dx.doi.org/10.7837/kosomes.2018.24.5.545

Estimation of Nutrient Mass Balance in a Phragmites Australis Community in Jinudo Through a Mesocosm Experiment  

RYU, Sung Hoon (Department of Ocean Engineering, Pukyong National University)
LEE, In cheol (Department of Ocean Engineering, Pukyong National University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.24, no.5, 2018 , pp. 545-552 More about this Journal
Abstract
In this study, we performed a mesocosm experiment to estimate the mass balance of Nutrients (DIN, DIP) in a phragmites australis community. We developed 4 mesocosm tanks which is available to circulate seawater with adjustable tide levels and flooding times. Each of the mesocosm tanks were filled with phragmites australis and sediment from Jinudo in Nakdong Estuary. We investigated DIN, DIP concentrations in three layers (seawater-phragmites australis-sediment) to estimate the mass balance of Nutrients and biomass. Growth rates were also investigated. The results can be summarized as follows. 1) In spring, rhizome biomass was higher than that of aerial stem by about 6.3~9.7%. In summer, aerial stem biomass was higher than that of rhizome about 19.2~21.2 %. 2) Th Growth rate of phragmites in Mesocosm Tank A was faster than in Mesocosm Tank D by about 2 to 3 times for aerial stem and rhizome. 3) The Concentration of nutrients (DIN, DIP) in each mesocosm Tank showed 2~3 % variance in spring and summer. 4) The biomass in each mesocosm varied by about 23 % which was higher than the concentration variance for each mesocosm tanks.
Keywords
Mesocosm experiment; Phragmites australis community; Nutrient; Mass balance; Aerial stem; Rhizome;
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