Kasetsart University Unlocks Solution to Revive Thai Seas with 'KU-SST' Technology, Successfully Transplants Seagrass to New Areas for First Time

Kasetsart University's Seagrass and Climate Change Research Unit at the Faculty of Fisheries has achieved a significant breakthrough in marine resource restoration following the successful development of the 'KU-SST technique' (KU Smart Site Selection for Seagrass Transplantation), an innovation that evaluates the suitability of seagrass planting sites. This technology increases survival rates and promotes seagrass expansion in concrete, measurable ways, representing a crucial step in coastal ecosystem conservation and addressing Thailand's climate change crisis.

Associate Professor Chatchree Kaewsuralip, Deputy Director of the Seagrass and Climate Change Research Unit and Faculty of Fisheries lecturer, revealed that over the past 20 years, Thailand has continuously attempted seagrass transplantation and restoration, yet has never achieved scalable success due to a critical limitation: unsuitable site selection and use of slow-growing seagrass species. Previous efforts primarily used 'long-leaf sea grass,' a variety requiring up to two years to produce new shoots from a single plant.

To address this problem, the research team spent over five years developing the KU-SST technique, collecting data from more than 600 seagrass sites across Thailand, covering both the Gulf of Thailand and Andaman coasts. The data underwent statistical analysis to determine environmental factor scores, which were integrated into a geographic information system to create suitability assessment maps for seagrass planting, categorized into five levels from most to least suitable. Testing showed KU-SST achieved average accuracy of 80%, with some areas reaching 93% accuracy. A key advantage is that users can access the maps via Google Earth on mobile devices for field implementation.

For testing the KU-SST technique, researchers selected 'short-leaf sea grass' or turtle seagrass, a faster-growing variety, and planted specimens from nearby areas in 'a completely new area with no previous seagrass.' The results were impressive: just three seagrass plants grew and multiplied into 58 plants within ten months—nearly a 20-fold increase—while surviving severe tidal lows and fierce monsoons, clearly demonstrating the effectiveness of site selection using KU-SST technology.

Associate Professor Chatchree credited the success to funding support from the National Research Council, which promotes research addressing genuine national needs, and private sector support from Bangchak Corporation and Thai President Foods.