Halophyte die-off in response to anthropogenic impacts on tidal flats

Yoon Kyung Lee, Wook Park, Jong Kuk Choi, Joo Hyung Ryu, Joong-sun Won

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This study analyzed an abrupt change in halophyte populations, especially the annual plant Suaeda japonica. The boundaries and distributions of S.japonica and Phragmites australis were determined based on the decision tree classifier of TerraSAR-X, SAVI of Landsat ETM+, and density slicing of aerial photography. A large patch of S.japonica in the eastern parts of Donggum-do, South Korea, disappeared in 2007, while populations have been stable in the western parts of the island. To understand the reason behind the sudden die-off, mean sea level was analyzed based on gaged tidal data. Sedimentation rate was measured using Vernier caliper and RTK leveling data. Sedimentation rate between 2006 and 2007 was above the threshold at which S.japonica can germinate. After the loss of an 11-ha S.japonica patch from the eastern part of Donggum-do, sedimentation was accelerated because of a decrease in tidal current caused by a series of land reclamation projects. The increased monthly exposure duration due to continuous sediment accretion altered the type of salt marsh. Our results imply that accumulated effects from a series of coastal construction projects around Ganghwa-do can change not only tide and current hydrodynamics, but also sedimentation and erosion rates, which can cause large halophyte patches to disappear.

Original languageEnglish
Pages (from-to)347-354
Number of pages8
JournalEstuarine, Coastal and Shelf Science
Volume151
DOIs
Publication statusPublished - 2014 Dec 5

Fingerprint

halophyte
die-off
tidal flat
sedimentation rate
anthropogenic activities
tides
Suaeda
calipers
slicing
aerial photography
Phragmites australis
South Korea
land restoration
Landsat
salt marshes
hydrodynamics
sea level
exposure duration
TerraSAR-X
annual plant

All Science Journal Classification (ASJC) codes

  • Oceanography
  • Aquatic Science

Cite this

Lee, Yoon Kyung ; Park, Wook ; Choi, Jong Kuk ; Ryu, Joo Hyung ; Won, Joong-sun. / Halophyte die-off in response to anthropogenic impacts on tidal flats. In: Estuarine, Coastal and Shelf Science. 2014 ; Vol. 151. pp. 347-354.
@article{b0d8a12e930344b38bf0909b14bd9da3,
title = "Halophyte die-off in response to anthropogenic impacts on tidal flats",
abstract = "This study analyzed an abrupt change in halophyte populations, especially the annual plant Suaeda japonica. The boundaries and distributions of S.japonica and Phragmites australis were determined based on the decision tree classifier of TerraSAR-X, SAVI of Landsat ETM+, and density slicing of aerial photography. A large patch of S.japonica in the eastern parts of Donggum-do, South Korea, disappeared in 2007, while populations have been stable in the western parts of the island. To understand the reason behind the sudden die-off, mean sea level was analyzed based on gaged tidal data. Sedimentation rate was measured using Vernier caliper and RTK leveling data. Sedimentation rate between 2006 and 2007 was above the threshold at which S.japonica can germinate. After the loss of an 11-ha S.japonica patch from the eastern part of Donggum-do, sedimentation was accelerated because of a decrease in tidal current caused by a series of land reclamation projects. The increased monthly exposure duration due to continuous sediment accretion altered the type of salt marsh. Our results imply that accumulated effects from a series of coastal construction projects around Ganghwa-do can change not only tide and current hydrodynamics, but also sedimentation and erosion rates, which can cause large halophyte patches to disappear.",
author = "Lee, {Yoon Kyung} and Wook Park and Choi, {Jong Kuk} and Ryu, {Joo Hyung} and Joong-sun Won",
year = "2014",
month = "12",
day = "5",
doi = "10.1016/j.ecss.2014.09.009",
language = "English",
volume = "151",
pages = "347--354",
journal = "Estuarine, Coastal and Shelf Science",
issn = "0272-7714",
publisher = "Academic Press Inc.",

}

Halophyte die-off in response to anthropogenic impacts on tidal flats. / Lee, Yoon Kyung; Park, Wook; Choi, Jong Kuk; Ryu, Joo Hyung; Won, Joong-sun.

In: Estuarine, Coastal and Shelf Science, Vol. 151, 05.12.2014, p. 347-354.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Halophyte die-off in response to anthropogenic impacts on tidal flats

AU - Lee, Yoon Kyung

AU - Park, Wook

AU - Choi, Jong Kuk

AU - Ryu, Joo Hyung

AU - Won, Joong-sun

PY - 2014/12/5

Y1 - 2014/12/5

N2 - This study analyzed an abrupt change in halophyte populations, especially the annual plant Suaeda japonica. The boundaries and distributions of S.japonica and Phragmites australis were determined based on the decision tree classifier of TerraSAR-X, SAVI of Landsat ETM+, and density slicing of aerial photography. A large patch of S.japonica in the eastern parts of Donggum-do, South Korea, disappeared in 2007, while populations have been stable in the western parts of the island. To understand the reason behind the sudden die-off, mean sea level was analyzed based on gaged tidal data. Sedimentation rate was measured using Vernier caliper and RTK leveling data. Sedimentation rate between 2006 and 2007 was above the threshold at which S.japonica can germinate. After the loss of an 11-ha S.japonica patch from the eastern part of Donggum-do, sedimentation was accelerated because of a decrease in tidal current caused by a series of land reclamation projects. The increased monthly exposure duration due to continuous sediment accretion altered the type of salt marsh. Our results imply that accumulated effects from a series of coastal construction projects around Ganghwa-do can change not only tide and current hydrodynamics, but also sedimentation and erosion rates, which can cause large halophyte patches to disappear.

AB - This study analyzed an abrupt change in halophyte populations, especially the annual plant Suaeda japonica. The boundaries and distributions of S.japonica and Phragmites australis were determined based on the decision tree classifier of TerraSAR-X, SAVI of Landsat ETM+, and density slicing of aerial photography. A large patch of S.japonica in the eastern parts of Donggum-do, South Korea, disappeared in 2007, while populations have been stable in the western parts of the island. To understand the reason behind the sudden die-off, mean sea level was analyzed based on gaged tidal data. Sedimentation rate was measured using Vernier caliper and RTK leveling data. Sedimentation rate between 2006 and 2007 was above the threshold at which S.japonica can germinate. After the loss of an 11-ha S.japonica patch from the eastern part of Donggum-do, sedimentation was accelerated because of a decrease in tidal current caused by a series of land reclamation projects. The increased monthly exposure duration due to continuous sediment accretion altered the type of salt marsh. Our results imply that accumulated effects from a series of coastal construction projects around Ganghwa-do can change not only tide and current hydrodynamics, but also sedimentation and erosion rates, which can cause large halophyte patches to disappear.

UR - http://www.scopus.com/inward/record.url?scp=84915807793&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84915807793&partnerID=8YFLogxK

U2 - 10.1016/j.ecss.2014.09.009

DO - 10.1016/j.ecss.2014.09.009

M3 - Article

VL - 151

SP - 347

EP - 354

JO - Estuarine, Coastal and Shelf Science

JF - Estuarine, Coastal and Shelf Science

SN - 0272-7714

ER -