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Journal : Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan

Diversity of macroalgae in the intertidal zone of Iboih Beach, Sabang, Indonesia Suwarniati, Suwarniati; Ulfa, Maria; Zahara, Meutia; Fajriana, Nurul; Amiren, Muslim; Aini, Qurratu
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.45719

Abstract

The intertidal zone of Iboih Beach in Sukakarya District, Sabang, has significant macroalgae diversity with different substrate variations. This study examined the diversity, distribution, and ecological significance of macroalgae using the quadrat method with purposive sampling technique on three plots measuring 2 2 m (coral, sand, and rock substrates), each replicated three times. Measurements of environmental parameters including temperature (using a thermometer), salinity (refractometer), and depth (Secchi disk) were carried out prior to sampling to ensure that environmental conditions were recorded. The results showed Galaxaura rugosa as the dominant species (INP 63.22), followed by Halimeda opuntia (38.42) and Chaetomorpha crassa (35.27), which showed a preference for hard substrates rich in nutrients. In contrast, Caulerpa sp. had the lowest INP (9.33), indicating specific habitat adaptation. The Shannon-Wiener diversity index (H=1.57) was in the moderate category, with an average INP of 28.575 reflecting a diverse community occupying different ecological niches. The coral substrate supported the highest abundance due to its stability and nutrient availability. This finding confirms the crucial role of substrate characteristics in the structure of intertidal macroalgal communities.Keywords:DiversityMacroalgaeIntertidal zoneSubstrateIboih Beach
Co-Authors Abdul Majid Abdurrahman, Faisal Bin Adamy, Aulina Afrida, Maina Aini Qurratu Aini, Qurratu Ajarni Ajarni Alfad Darul Umra Alma Aletta Alma, Siti Amiren, Muslim Anisrina Anisrina Arifin, Vera Nazhira Aripin Ahmad, Aripin Aslam Nur Asnawi Abdullah Asnawi Abdullah Asnawi Abdullah Asyifa, Putri Aulia zulkifli, Riski Baharuddin, Dharina Basri Aramico Basri Aramico, Basri Cintia, Defi Cut Mawar Helmanda Cut Mawar Helmanda Cut Nasrulsyah Cut Novrita Rizki Cut Novrita Rizki Dharina Baharuddin Dilla Santi, Tahara Erlina, Eni Essy Harnelly Fadhillah, Nada Fadhlullah, Fadhlullah Fahmi Ichwansyah Fajriana, Nurul Falita, Cut Mela Fatemah Rosma Fauza, Riska Febyolla Presilawati Hafnidar A. Rani Hafnidar, Hafnidar Hanifah Hasnur Hasnita, Nevi Helmanda, Cut Mawar Hermansyah Hermansyah Hermansyah Hermansyah Hidayat, Melania Ichwansyah, Fachmi Ilham Wahyudi Ira Puspita Sari Irhamna, Dian Ayu Jamaluddin Jamaluddin Kamaliah Kamaliah, Kamaliah Kusma, Nila Lina Rahmawati Loki, Orismi Luthfi Nanda Perdana M. Marthoenis Maghfirah Maghfirah Mahlil Yulian Winda Maidar Maidar Maidar, Maidar Maifrizal, Maifrizal Manja Manja Maria Ulfa Masitoh Masitoh Masrita, Masrita Mauizah Hasanah Mauizah Hasanah Mauizzah Hasanah Mawaddah, Husnul Muhammad Fadhil Muhammad Fikri Muhammad Muhammad Muhammad Yani Muhammad Yani, Muhammad Murdi, Syahrial Muslim Muslim Muslim Muslim MUSLIM MUSLIM Nada Fadhillah Nazariah Nazariah Nazariah Nazariah, Nazariah Nura Shara Amirza Nurhidayatun Rahma Nurjannah Nurjannah Nurul Fajriana Nurul Fajriana Ori Resmida Orismi Loki QURRATU AINI Qurratu, Aini Radhiah Zakaria Radhiah, Radhiah Rahmatun Nisa Rahmatun Nisa, Rahmatun Restu Andrian Restu Andrian, Restu Rina Hasnita Risnawati Risnawati Riza Septiani Riza Septiani Rizki, Cut Novrita Rosnidarwati Rosnidarwati Salsabila, Siti Saputra, Irwan Siti Salsabila Surna Lastri Suryady Suryady Suryady, Suryady Sutri Helfianti Suwarniati Suwarniati, Suwarniati Suwirda, Cut Syarifah Farissi Hamama Syelvita, Cut Yayang Tahara Dilla Santi Ulia Hanum Ulia Hanum Usman, Said Vera Nazhira Arifin Win, Cho Cho Winda, Mahlil Yulian Yosi Rosalita Zaharamutia, Zaharamutia Zairin Thomy Zakaria, Radhiah Zalianda, Rahma