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Preliminary Identification to Local Coral Bleaching Event in Manjuto Beach, Pesisir Selatan Regency, West Sumatra: Hydro-Oceanographic Perspectives

Jurnal Ilmiah Perikanan dan Kelautan · Vol. 13 No. 2 (2021) · hlm. 156–170

DOI
10.20473/jipk.v13i2.25502
ISSN
2528-0759, 2085-5842
Terbit
2021-09-28
Penerbit
Faculty of Fisheries and Marine Universitas Airlangga
Bahasa
eng
Lisensi
creativecommons.org/licenses/by-nc-sa/4.0

Abstrak

Highlight ResarchThe cause of local coral bleaching in Manjuto Beash has been addressed.The influence of ebb-tide cycles on salinity mixing and stratification was analyzed.Spatial analysis Digital Shoreline Analysis System (DSASv5) was conducted to determine the coastline changes in Manjuto Beach.Flow model flexible mesh was simulated to determine the flow pattern within Sungai Pinang Bay.AbstractIn October 2019, the local community reported the occurrence of coral bleaching of a colony of Acropora sp. at Manjuto Beach, Pesisir Selatan Regency experienced bleaching. It was published in several local news, becoming a trending topic among local and central government authorities and coastal communities. There were many inaccuracies about the cause of this phenomenon. This study aimed to identify the causes of local coral bleaching in Manjuto Beach based on oceanographic perspectives. The water quality data collected using TOA DKK water quality checker in the surrounding Manjuto Beach were assessed descriptive-statistically. This study also analyzed the spatial changes of the coastline using DSASv5. A time series of tidal data was also used to analyze the tidal range-induced salinity stratification. A flow model with a flexible mesh was also simulated to determine the water mass movement and longshore current patterns in Manjuto Beach. Dissolved oxygen (DO), temperature, and salinity showed anomalies compared to the water quality standard to support marine life. During both flood and ebb tides, it ranged from 5.8-11.2 mg/L, 28-28.3oC, and 25-28 o/oo, respectively. The other parameters measured (pH, conductivity, turbidity, and density) were suitable for marine biota. The findings show that tidal range has a unique influence on salinity stratification. The intrusion of groundwater supply resulted in lowering of salinity, inducing local coral bleaching in Manjuto Beach. Changes in salinity levels were also triggered by tidal current ranging from 0-0.31 m/s resulting in cumulative salinity shock. Currently, Manjuto Beach is experiencing accretion ranging from 2.36-3.17 m/year, altering the water coverage through the flood-ebb cycles. Those states cause cumulative sun rays' exposures and salinity shock induced by flood-ebb cycles. That is why local coral bleaching event is undoubtedly avoided.

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  • Ministry of Marine Affairs and Fisheries
  • Diponegoro University
  • Universitas Bung Hatta
  • National Nuclear Energy Agency of Indonesia
  • Andalas University
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Rekan penulisOrganisasiArtikel bersama
Wisnu Arya GemilangMinistry of Marine Affairs and Fisheries3
Gunardi KusumahMinistry of Marine Affairs and Fisheries2
Semeidi HusrinMinistry of Marine Affairs and Fisheries2
Tubagus SolihuddinMinistry of Marine Affairs and Fisheries1
Ali ArmanNational Nuclear Energy Agency of Indonesia1
Koko OndaraMinistry of Marine Affairs and Fisheries1
Aprizon PutraAndalas University1
Joko PrihantonoMinistry of Marine Affairs and Fisheries1
Herdiana MutmainahMinistry of Marine Affairs and Fisheries1
Muhammad RamdhanMinistry of Marine Affairs and Fisheries1
Aida HeriatiMinistry of Marine Affairs and Fisheries1
Eva MustikasariMinistry of Marine Affairs and Fisheries1
Ilham IlhamMinistry of Marine Affairs and Fisheries1
Lilik MaslukahDiponegoro University1
Anindya WirasatriyaDiponegoro University1
Sugeng WidadaDiponegoro University1
Baskoro RochaddiDiponegoro University1
M. Firouz Dimas SadewoDiponegoro University1
Gegar Sapta PrasetyoAfiliasi tidak diketahui1
Try Al TantoMinistry of Marine Affairs and Fisheries1
Ilham IlhamMinistry of Marine Affairs and Fisheries1

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Sumber metadata: OAI-PMH (metadata jurnal) https://e-journal.unair.ac.id/index.php/JIPK/oai, pertama di-harvest 9 Nov 2026, terakhir terlihat 9 Nov 2026.
Metadata asli (oai_dc) 
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	<dc:title xml:lang="en-US">Preliminary Identification to Local Coral Bleaching Event in Manjuto Beach, Pesisir Selatan Regency, West Sumatra: Hydro-Oceanographic Perspectives</dc:title>
	<dc:creator>Wisha, Ulung Jantama</dc:creator>
	<dc:creator>Dhiauddin, Ruzana</dc:creator>
	<dc:creator>Rahmawan, Guntur Adhi</dc:creator>
	<dc:creator>Wijaya, Yusuf Jati</dc:creator>
	<dc:subject xml:lang="en-US">Coral bleaching</dc:subject>
	<dc:subject xml:lang="en-US">Manjuto Beach</dc:subject>
	<dc:subject xml:lang="en-US">Hydro-oceanography</dc:subject>
	<dc:subject xml:lang="en-US">coastline changes</dc:subject>
	<dc:description xml:lang="en-US">Highlight ResarchThe cause of local coral bleaching in Manjuto Beash has been addressed.The influence of ebb-tide cycles on salinity mixing and stratification was analyzed.Spatial analysis Digital Shoreline Analysis System (DSASv5) was conducted to determine the coastline changes in Manjuto Beach.Flow model flexible mesh was simulated to determine the flow pattern within Sungai Pinang Bay.AbstractIn October 2019, the local community reported the occurrence of coral bleaching of a colony of Acropora sp. at Manjuto Beach, Pesisir Selatan Regency experienced bleaching. It was published in several local news, becoming a trending topic among local and central government authorities and coastal communities. There were many inaccuracies about the cause of this phenomenon. This study aimed to identify the causes of local coral bleaching in Manjuto Beach based on oceanographic perspectives. The water quality data collected using TOA DKK water quality checker in the surrounding Manjuto Beach were assessed descriptive-statistically. This study also analyzed the spatial changes of the coastline using DSASv5. A time series of tidal data was also used to analyze the tidal range-induced salinity stratification. A flow model with a flexible mesh was also simulated to determine the water mass movement and longshore current patterns in Manjuto Beach. Dissolved oxygen (DO), temperature, and salinity showed anomalies compared to the water quality standard to support marine life. During both flood and ebb tides, it ranged from 5.8-11.2 mg/L, 28-28.3oC, and 25-28 o/oo, respectively. The other parameters measured (pH, conductivity, turbidity, and density) were suitable for marine biota. The findings show that tidal range has a unique influence on salinity stratification. The intrusion of groundwater supply resulted in lowering of salinity, inducing local coral bleaching in Manjuto Beach. Changes in salinity levels were also triggered by tidal current ranging from 0-0.31 m/s resulting in cumulative salinity shock. Currently, Manjuto Beach is experiencing accretion ranging from 2.36-3.17 m/year, altering the water coverage through the flood-ebb cycles. Those states cause cumulative sun rays' exposures and salinity shock induced by flood-ebb cycles. That is why local coral bleaching event is undoubtedly avoided.</dc:description>
	<dc:publisher xml:lang="en-US">Faculty of Fisheries and Marine Universitas Airlangga</dc:publisher>
	<dc:date>2021-09-28</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
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	<dc:identifier>https://e-journal.unair.ac.id/JIPK/article/view/25502</dc:identifier>
	<dc:identifier>10.20473/jipk.v13i2.25502</dc:identifier>
	<dc:source xml:lang="en-US">Jurnal Ilmiah Perikanan dan Kelautan; Vol. 13 No. 2 (2021): JURNAL ILMIAH PERIKANAN DAN KELAUTAN; 156-170</dc:source>
	<dc:source>2528-0759</dc:source>
	<dc:source>2085-5842</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://e-journal.unair.ac.id/JIPK/article/view/25502/15690</dc:relation>
	<dc:relation>https://e-journal.unair.ac.id/JIPK/article/view/25502/41087</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2021 Jurnal Ilmiah Perikanan dan Kelautan</dc:rights>
	<dc:rights xml:lang="en-US">http://creativecommons.org/licenses/by-nc-sa/4.0</dc:rights>
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