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All Journal Jurnal Teknologi Perikanan dan Kelautan Jurnal Ilmu dan Teknologi Kelautan Tropis ILMU KELAUTAN: Indonesian Journal of Marine Sciences JSEH (Jurnal Sosial Ekonomi dan Humaniora) Jurnal Sains Teknologi dan Lingkungan (JSTL) Jurnal Belantara Jurnal Biologi Tropis SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Jurnal Ilmu Kelautan Kepulauan Jurnal Pengabdian Magister Pendidikan IPA Jurnal Abdi Insani Jurnal Pengabdian Perikanan Indonesia Jurnal SIAR ILMUWAN TANI Jurnal Pepadu Jurnal Ilmu Kelautan Lesser Sunda
Mahardika Rizqi Himawan
Jurusan Perikanan Dan Kelautan, Fakultas Pertanian, Universitas Mataram
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Journal : Jurnal Biologi Tropis

 1 
Study of Hard Coral Community Structure and Natural Recruitment on Rote Island in the Sawu Sea Marine National Park (TNP) Idris Idris; Fakhrurrozi; Ofri Johan; Jotham S R Ninef; Edwin Jefri; Mahardika Rizqi Himawan
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.4688

Abstract

Rote Island and its surroundings are included in the Savu Sea Marine National Park (TNP) area and are administratively included in the Rote Ndao Regency, East Nusa Tenggara (NTT) Province. The waters of the area have high potential for coral reef ecosystem resources and are an important for the marine biota. But when the condition is under pressure due to anthropogenic and natural influences. Therefore it is necessary to carry out routine observations related to the condition of the community structure and its potenstial natural recruitment. Observations were made on 26-28 September 2021 at 12 observation stations. The observation method used was the belt transect method with 3 repetitions (20 m) with an area of 60 m2. Data collection using SCUBA equipment at a depth of 5-7 m on the reef flat. The results of the study found a total of 37 hard coral genera and the highest species richness was in Daiama 2 (30 genera) and the lowest was in Oelua and metina (13 genera). The dominant hard coral genera found were the Porites genera. Furthermore, the potential for natural recruitment of hard coral tillers reaches 21%. The highest potential for natural recovery is at Sotimori 1 (station 3) and the lowest at Boni (station 12). In general, the hard coral community structure at the observation site is in a stable condition with good natural recruitment potential.
Survival Rate and Growth Rate of Transplant Acropora sp and Porites sp Corals in Kecinan, North Lombok Sigit Hariyanto; Ibadur Rahman; Mahardika Rizqi Himawan
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): April-June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v23i2.4876

Abstract

Coral reef ecosystem is an ecosystem that plays a vital role as spawning floor, feeding floor and nursery ground for marine biota. This study aims to determine the survival and in growth rate of Acropora sp and Porites sp sp corals transplanted using frame media. This research was done in Kecinan Coastal Waters, Malaka Village, Pamenang District, North Lombok Regency. West Nusa Tenggara. The method used in this study an experimental method with 2 month observation, which repeated in every 2 weeks. Coral growth rate is observed twice, at the beginning of coral planting and at the end of the observation. The frame media used were 4 units a size of 1 x 1 m2, which placed 30 coral fragments each. So the total number of coral fragments observed was 120 in the media frame at the same depth. Acropora sp corals that were able to survive until the end of the study reached 96.67% while Porites sp sp corals reached 86.67%. The growth rate of Acropora sp was obtained at a value of 0.51 cm/month, while for Porites sp sp was 0.37 cm/month. The two transplanted corals had different growth forms so that they had different growth rate values. Acropora sp coral had a branching growth form with a hollow and porous limestone structure while Porites sp sp had a massive growth form with a denser and harder limestone skeletal structure.
Status of Coral Reef Benthic Cover in the Gili Balu Marine Conservation Area, Sumbawa, West Nusa Tenggara Himawan, Mahardika Rizqi; Santana, Lalu Bagus; Lestariningsih, Wiwid Andriyani; Hidayatullah, Rahmat; Prabuning, Derta
Jurnal Biologi Tropis Vol. 24 No. 2b (2024): Special Issue
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v24i2b.8077

Abstract

The coral reef ecosystem in Indonesia boasts the highest biodiversity and serves as the center of the Coral Triangle's diversity. Despite its richness, Indonesia's coral reefs face increasing threats from various factors, primarily anthropogenic. Regular biophysical surveys of coral reef ecosystems are therefore necessary to monitor their current conditions and guide management efforts. This study aimed to assess the condition of coral reefs by examining the percentage of coral cover in the Gili Balu Marine Conservation Area, Sumbawa NTB. The research was conducted in January, 2022, using the Point Intercept Transect (PIT) method at 10 observation points. The transects measured 50 meters in length and were repeated three times at each location. The results indicated that the coral reefs were in good condition at the South Belang Island Station (57%) and West Pasareang Island (69.67%), according to Kepmen LH No. 4/2001. However, moderately damaged reefs were observed at North Belang Station (38%), Kenawa Island (30%), East Belang Island (30%), and Mandiki Island (28.67%). Coral reefs classified as severely damaged were found at Southwest Namo Island Station (17.33%), North Pasareang (16.67%), South Kalong (11%), and North Namo (9.67%). Overall, the dominant condition of coral reefs in the Gili Balu Conservation Area was categorized as moderately to severely damaged. Conservation efforts, including protection in areas with good conditions and rehabilitation in damaged areas, are recommended as follow-up actions to support coral reef sustainability in Gili Balu.
Co-Authors Adiba, Nur Adiwijaya, Cakra Afid Wisnubroto Agung, Wahyu Alam, Dita Hikmatul Amar, Fahri Anggereni, Aprilia Anggraini, Nurlita Putri Araujo, Gonzalo Ardiansyah, Yanuar Ashari, Rowi Asmileen, Suci Dwi Atmaja, Putu Satya Pratama Ayu Adhita Damayanti Ayu Adhita Damayanti Baiq Hilda Astriana Baiq Hilda Astriana Budhy Setiawan Cahaya, Himaya Kartika Chandrika Eka Larasati Chandrika Eka Larasati Chandrika Eka Larasati Chandrika Eka Larasati, Chandrika Eka Devi, Lokita Dewi, Amalia Sartika Diah Permata Sari Edwin Jefri Edwin Jefri Edwin Jefri Eni Hidayati Eni Hidayati Eni Hidayati Eni Hidayati Eni Hidayati Fadillah, Fitri Fakhrurrozi Fitriani, Rahmah Gigentika, Soraya Hamzah Hamzah Hamzah, Hamzah Hardianty Hardianty Hariadi, Muhammad Dipa Hawis H Madduppa Hernawati Hernawati Hery Widijanto Himawan, Cahya Hotmariyah, Hotmariyah Ibadur Rahman Ibadur Rahman Ibadur Rahman Ida Ansharyani Idris Idris Irwan Mahakam Lesmono Aji Jayawangsa, Rahman Jefri, Edwin Jotham S R Ninef Jurnal Pepadu Khaldun, Muhammad Hafidz Ibnu Lalu Ferdi Alfarisi Murdin Lalu Kukuh Mahendra Lalu Kukuh Mahendra lestariningsih, Wiwid Lestariningsih, Wiwid Andriyani Lestrariningsih, Wiwid Andriyani Mahendra, Putra Ivan Majariana Krisanti Majerus, Kara Muriel Angela Martanina, Martanina Maulita Syahdina Maulita Syahdina Muh. Marwan Muhammad Sumsanto Murdin, Lalu Ferdi Alfarisi Murtiyoso, Mahbub Niechi Valentino Nurliah Nurliah Buhari Nurliah Buhari Nurliah Buhari Nurliah Buhari, Nurliah Nurliah Nurliah nurliah, nurliah Nyoman Widi Artha Putra Ofri Johan Paryono Paryono Paryono Paryono Paryono Paryono Paryono1 Prabuning, Derta Pratama, Alfian Putra, Brilliant Rudzaky Ridwan Rafandi, Muhammad Tezar Rahman, Ibadur Rahmat Hidayatullah Rhojim Wahyudi Rosyada, Vivian Sadikin Amir Sakina, Sholihati Lathifa Santana, Lalu Bagus Santika, Lora Saptono Waspodo Sholihati Lathifa Sakina Siagian, Raja Aditya Sahala Siahaya, Patrick Alexander Sigit Hariyanto Sitti Hilyana Sitti Hilyana Sitti Hilyana Sitti Latifah Sitti Latifah Soraya Gigentika Sultansyah, Muhammad Ta'yuni, Qur'a Tania, Casandra Tilahunga, Sukirman Tilahunga, Sukirman Dj Utami, Widia Tri WIBISONO, RENDY VIDYA Wiwid Andriyani Lestariningsih Wiwid Andriyani Lestariningsih Z, Muhammad Fayyadh A.