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All Journal Indonesian Journal of Applied Environmental Studies
David Harries
Somerton Cottage, Hundleton, Pembroke SA71 5RX, United Kingdom
Environmental Science

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Indonesian green tides: the problem is also the solution Christine A. Maggs; David Harries; Dolly Priatna
Indonesian Journal of Applied Environmental Studies Vol 5, No 2 (2024): Volume 5 Number 2 October 2024
Publisher : Universitas Pakuan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33751/injast.v5i2.10906

Abstract

Green tides are unattached blooms of green macroalgae (seaweeds) that occur globally and can attain vast proportions. The main components of the blooms are species of the sea lettuce genus Ulva, a sheet-like green seaweed, which can form unusual morphs under these conditions. In estuaries and shallow coastal embayments drifting or cast-up macroalgae can reach quantities of up to 27 kg wet weight m-2. Green tides have been researched extensively since Fletcher's (1996) review highlighted their importance, but they came to wide public attention at the time of the 2008 Qingdao Summer Olympics when the Yellow Sea blooms endangered the sailing events. In May–July 2008, prior to the Olympics, the Yellow Sea coastline experienced the world’s largest green tide with 1 million tonnes of drifting biomass covering 13,000–30,000 km2. Enormous quantities were washed into shallow water and onto the beaches.  News reports from the time show volunteers working to remove the biomass and save the events.  Green tides have increased in frequency and extent globally over the last few decades, with the most significant blooms continuing to be those in the Yellow Sea.
Co-Authors Christine A. Maggs Dolly Priatna