Carbon sequestration and nutrient uptake by Red Macroalga, <em>Sarcodia suiae</em>

Chin-chang Hung

Presentation information

[J] Oral

A (Atmospheric and Hydrospheric Sciences ) » A-CG Complex & General

[A-CG56] Coastal Ecosystems-2. Coral reefs, seagrass and macroalgal beds, and mangroves

convener:Yu Umezawa(Tokyo University of Agriculture and Technology), Toshihiro Miyajima(Marine Biogeochemistry Group, Division of Ocean-Earth System Science, Atmosphere and Ocean Research Institute, The University of Tokyo), Atsushi Watanabe(The ocean policy research institute, The Sasakawa peace foundation), Tomihiko Higuchi(Atmosphere and Ocean Research Institute, The University of Tokyo)

[ACG56-09] Carbon sequestration and nutrient uptake by Red Macroalga, Sarcodia suiae

*Chin-chang Hung¹ (1.National Sun Yat Sen University)

Keywords:macroalga, carbon sequestration, nutrient

As the aquaculture industry quickly grows, it simultaneously poses unprecedented environmental pressures. Typically, aquaculture generates large quantities of nutrients and organic carbon, which causes coastal eutrophication and greenhouse gas emissions (GGEs). In this study, we used marine macroalgae Sarcodia suiae to take up nutrients from aquaculture shrimp ponds in southern Taiwan. The preliminary results showed that Sarcodia suiae can produce approximately at least 1 kg-wet weight /m2/day (about 29 C-g/m2/day and 2.8 N-g/m2/day based on C-N-S EA instrumental analysis), respectively, under a suitable environment. The result suggests that Sarcodia suiae is not only a good candidate to efficiently regulate excessive nutrients from shrimp ponds, but also can play an important role in carbon sequestration, especially from anthropogenic CO₂ emissions.