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Community Structure of Coral Reef Ecosystem in Senoro-Toili Block

Jurnal Biodjati · Vol. 11 No. 1 (2026) · pp. 21–35

DOI
10.15575/biodjati.v11i1.54702
ISSN
2541-4208, 2548-1606
Published
2026-05-31
Publisher
UIN Sunan Gunung Djati Bandung
Language
eng
License
creativecommons.org/licenses/by-nc-nd/4.0

Abstract

Research on coral reef biodiversity within oil and gas operational areas remains limited, as most previous studies have focused on coastal ecosystems adjacent to urban environments. This study aims to assess coral reef condition and reef fish community structure in the Senoro–Toili Block, and to examine the relationship between coral cover and reef fish abundance. Field data were collected using Manta Tow and Line Intercept Transect (LIT) methods for coral reef conditions, while reef fish data were obtained through the Underwater Visual Census (UVC) method. Coral reef observations included percentages of live hard coral, dead coral, algae, and abiotic substrates. Fish data comprised species composition and abundance, which were analyzed at the family level. The relationship between reef fish abundance and live coral cover was tested using Pearson correlation analysis. The study results indicated that dead corals dominated the Senoro-Toili Block coral community, ranging from 17.62 to 52.68%. Evaluation of coral reef conditions shows moderate to high levels of damage, with a high mortality index, indicating that reef health is significantly compromised and may negatively impact associated reef fish populations. The reef fish community comprises 195 species across 37 families. The abundance of reef fish ranges from 1605 to 3105 individuals/500 m². The Pearson correlation showed a significant association between reef fish abundance and coral cover (p < 0.05). The diversity index was high, and the evenness index indicated a stable fish community. A low dominance index supported this. These conditions indicate that the reef fish community in the Senoro–Toili Block exhibits relatively high ecological resilience in response to both natural and anthropogenic disturbances. These results highlight the need for continuous management interventions, especially coral transplantation initiatives implemented in the study region.

Keywords

Collaboration network of the authors

40 authors · 103 co-authorship links · 12 across different organisations · showing the 40 most connected

Hover or tap a name to highlight its co-authors. Double-click to open the author's page.

  • Telkom University
  • Universitas Gadjah Mada
  • Universitas Halu Oleo
  • Institut Teknologi Telkom Purwokerto
  • Hasanuddin University
  • Universitas Sulawesi Tenggara
  • Institut Teknologi dan Sains Mandala
  • Other organisations
  • Affiliation unknown
  • Different organisations
  • Same organisation
  • Affiliation unknown
  • Thicker line = more joint articles · bigger circle = more articles
Show as table
Co-authorOrganisationJoint articles
Sugondo HadiyosoTelkom University3
Jondri JondriTelkom University2
Risanuri HidayatUniversitas Gadjah Mada2
Hanung Adi NugrohoUniversitas Gadjah Mada2
Dewi Yanuarita SatariAffiliation unknown2
Fauziah AzmiAffiliation unknown2
Teuku Fadlon HaserAffiliation unknown2
Dien RahmawatiTelkom University1
Desri Kristina SilalahiTelkom University1
Vera SuryaniUniversitas Gadjah Mada1
Willy Anugrah CahyadiTelkom University1
. YusnainiAffiliation unknown1
Wellem H. MuskitaAffiliation unknown1
Nur HasanahUniversitas Halu Oleo1
Novalina SerdiatiAffiliation unknown1
Aswad Eka PutraAffiliation unknown1
Amanda Pricella PutriAffiliation unknown1
Riris Yuli ValentineAffiliation unknown1
Rita RostikaAffiliation unknown1
Ayu YustiatiAffiliation unknown1
Mochammad RudyansyahAffiliation unknown1
Lantun Paradhita DewantiAffiliation unknown1
Rahmat WidadiInstitut Teknologi Telkom Purwokerto1
Hilman FauziAffiliation unknown1
Ziani SaidAffiliation unknown1
Syamsu Alam AliAffiliation unknown1
Supriadi SupriadiUniversitas Sulawesi Tenggara1
Ahmad FaizalAffiliation unknown1
Rohani Ambo‐RappeHasanuddin University1
Agung MuliawanInstitut Teknologi dan Sains Mandala1
Merita Ayu IndriantiUniversitas Muhammadiyah Gorontalo1
Dewi Shinta AchmadAffiliation unknown1

Affiliations come from OpenAlex; journal OAI-PMH metadata carries none. Authors without an OpenAlex ID are matched by name, which can merge or split people.

Metadata source: OAI-PMH (metadata jurnal) https://journal.uinsgd.ac.id/index.php/biodjati/oai, first harvested 7 Nov 2026, last seen 8 Nov 2026.
Original metadata (oai_dc) 
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	<dc:title xml:lang="en-US">Community Structure of Coral Reef Ecosystem in Senoro-Toili Block </dc:title>
	<dc:creator>Mansyur, Kasim</dc:creator>
	<dc:creator>Rizal, Achmad</dc:creator>
	<dc:creator>Tis’in, Musayyadah</dc:creator>
	<dc:creator>Nurdin, Muh. Saleh</dc:creator>
	<dc:creator>Artha, Shanti Nata</dc:creator>
	<dc:creator>Nurdin, Enrico Putra</dc:creator>
	<dc:creator>Maulidiansa, Clara</dc:creator>
	<dc:creator>Stani, Abdil Halimis</dc:creator>
	<dc:subject xml:lang="en-US">biodiversity</dc:subject>
	<dc:subject xml:lang="en-US">coral cover</dc:subject>
	<dc:subject xml:lang="en-US">reef fish</dc:subject>
	<dc:description xml:lang="en-US">Research on coral reef biodiversity within oil and gas operational areas remains limited, as most previous studies have focused on coastal ecosystems adjacent to urban environments. This study aims to assess coral reef condition and reef fish community structure in the Senoro–Toili Block, and to examine the relationship between coral cover and reef fish abundance. Field data were collected using Manta Tow and Line Intercept Transect (LIT) methods for coral reef conditions, while reef fish data were obtained through the Underwater Visual Census (UVC) method. Coral reef observations included percentages of live hard coral, dead coral, algae, and abiotic substrates. Fish data comprised species composition and abundance, which were analyzed at the family level. The relationship between reef fish abundance and live coral cover was tested using Pearson correlation analysis. The study results indicated that dead corals dominated the Senoro-Toili Block coral community, ranging from 17.62 to 52.68%. Evaluation of coral reef conditions shows moderate to high levels of damage, with a high mortality index, indicating that reef health is significantly compromised and may negatively impact associated reef fish populations. The reef fish community comprises 195 species across 37 families. The abundance of reef fish ranges from 1605 to 3105 individuals/500 m². The Pearson correlation showed a significant association between reef fish abundance and coral cover (p &amp;lt; 0.05). The diversity index was high, and the evenness index indicated a stable fish community. A low dominance index supported this. These conditions indicate that the reef fish community in the Senoro–Toili Block exhibits relatively high ecological resilience in response to both natural and anthropogenic disturbances. These results highlight the need for continuous management interventions, especially coral transplantation initiatives implemented in the study region.</dc:description>
	<dc:publisher xml:lang="en-US">UIN Sunan Gunung Djati Bandung</dc:publisher>
	<dc:date>2026-05-31</dc:date>
	<dc:type>info:eu-repo/semantics/article</dc:type>
	<dc:type>info:eu-repo/semantics/publishedVersion</dc:type>
	<dc:type xml:lang="en-US">Peer-reviewed Article</dc:type>
	<dc:format>application/pdf</dc:format>
	<dc:identifier>https://journal.uinsgd.ac.id/index.php/biodjati/article/view/54702</dc:identifier>
	<dc:identifier>10.15575/biodjati.v11i1.54702</dc:identifier>
	<dc:source xml:lang="en-US">Jurnal Biodjati; Vol. 11 No. 1 (2026): May; 21-35</dc:source>
	<dc:source xml:lang="id-ID">Jurnal Biodjati; Vol 11 No 1 (2026): May; 21-35</dc:source>
	<dc:source>2541-4208</dc:source>
	<dc:source>2548-1606</dc:source>
	<dc:language>eng</dc:language>
	<dc:relation>https://journal.uinsgd.ac.id/index.php/biodjati/article/view/54702/16495</dc:relation>
	<dc:rights xml:lang="en-US">Copyright (c) 2026 Jurnal Biodjati</dc:rights>
	<dc:rights xml:lang="en-US">https://creativecommons.org/licenses/by-nc-nd/4.0</dc:rights>
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