Typhoon-induced changes in seagrass beds over the past three decades in the Korean coastal waters

Title
Typhoon-induced changes in seagrass beds over the past three decades in the Korean coastal waters
Author(s)
김근용; 김범준; 최종국; 유주형
KIOST Author(s)
Kim, Keunyong(김근용)Choi, Jong Kuk(최종국)Ryu, Joo Hyung(유주형)
Publication Year
2018-09-04
Abstract
Seagrass is one of the most important vegetation in coastal ecosystems. Despite the ecological importance, the large loss of seagrass beds around the world have been reported. In particular, extreme climatological events such as typhoons have large impact on the seagrass beds. In order to clarify how seagrass distribution variation is affected by typhoons have been studied. In this study, we used multi-spatial resolution satellite imageries collected from 1990 to 2016 to examine the spatial and temporal dynamics of seagrass beds at Deukryang bay, Korea. From the analysis of time-series satellite imageries, there were no significant changes in distribution patterns of seagrass beds for 20 years, and the average area of seagrass beds was 4.6 km2. However, significant decline of seagrass beds was observed in September 2012 after Typhoon Bolaven, Tembin, and Sanba consecutively passed the study site. The three sequential typhoons that passed through during the short time probably produced a cumulative damage. After the seagrass die-off, degraded seagrass bed completely recovered from the typhoon damage in a few years. These seagrass mapping results will allow understand past changes and provide crucial information for management of their resources.ve large impact on the seagrass beds. In order to clarify how seagrass distribution variation is affected by typhoons have been studied. In this study, we used multi-spatial resolution satellite imageries collected from 1990 to 2016 to examine the spatial and temporal dynamics of seagrass beds at Deukryang bay, Korea. From the analysis of time-series satellite imageries, there were no significant changes in distribution patterns of seagrass beds for 20 years, and the average area of seagrass beds was 4.6 km2. However, significant decline of seagrass beds was observed in September 2012 after Typhoon Bolaven, Tembin, and Sanba consecutively passed the study site. The three sequential typhoons that passed through during the short time probably produced a cumulative damage. After the seagrass die-off, degraded seagrass bed completely recovered from the typhoon damage in a few years. These seagrass mapping results will allow understand past changes and provide crucial information for management of their resources.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/23151
Bibliographic Citation
ECSA 57: Changing estuaries, coasts and shelf system, 2018
Publisher
Elsevier
Type
Conference
Language
English
Publisher
Elsevier
Related Researcher
Research Interests

Coastal Remote Sensing,RS based Marine Surveillance System,GOCI Series Operation,연안 원격탐사,원격탐사기반 해양감시,천리안해양관측위성 운영

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