Article Per Year (5 Year)
p-Index From 2020 - 2025
2.601
P-Index
This Author published in this journals
All Journal Journal of Marine Research Jurnal Biologi Tropis Jurnal Pengabdian Magister Pendidikan IPA Jurnal Abdi Insani Jurnal Aplikasi dan Inovasi Iptek (JASINTEK) Jurnal SIAR ILMUWAN TANI Journal of Fish Health Jurnal Pepadu Carmin: Journal of Community Service Journal of Aceh Aquatic Sciences Jurnal Perikanan Jurnal Ilmu Kelautan Lesser Sunda
Rhojim Wahyudi
Program Studi Ilmu Kelautan Fakultas Pertanian Universitas Mataram
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Social Sciences Other

Published : 18 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 3 Documents
Search
Journal : Jurnal Biologi Tropis

 1 
Distribution of Marine debris in Coral Reef Ecosystems on Mules Island, Sawu Marine National Park Idris Idris; Fakhrurrozi Fakhrurrozi; Desna Bagus Suhendar; Akbar Rochyadi; Rhojim Wahyudi; Chandrika Eka Larasati
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.v23i2.4618

Abstract

Mules Island and its surroundings are included in the Savu Sea National Park (TNP) area and administratively included in the Manggarai Regency, East Nusa Tenggara Province (NTT). The waters of the area have a high potential for coral reef ecosystem resources and are important support for the marine life. However, the current condition of anthropogenic pressure continues to increase due to an increase in the number of people living on the coast and small islands. One of the pressures that are currently a big issue is the existence of marine debris, where studies related to its impact and distribution on coral reef ecosystems are still very few. The purpose of this study was to determine the distribution and types of marine debris in the coral reef ecosystem on Nucamolas Island and its surroundings. Observations were made on 1-3 November 2021 at 12 stations. The research method used is the belt transect method with an area of 500 m2. Data collection was assisted by SCUBA diving equipment at a depth of 5-7 m on the coral reef flat. The results of this study found that the dominant marine debris in the coral reef ecosystem was organic waste (64.3%) and a group of macro debris (71,4%). Based on the type, the dominant species found were logs (37%), which physically damaged the coral, especially when currents and waves were moving. The distribution of marine debris at the study site was only found at 8 stations while the other 4 were not found.
Analysis of the Economic Value of Environmental Services of Mangrove Ecosystem in Cendi Manik, Sekotong District, West Lombok Regency Nuryadin, Rusmin; Fitria, Syawalina; Alim, Sahrul; Wahyudi, Rhojim; Amir, Sadikin; Valentino, Niechi
Jurnal Biologi Tropis Vol. 24 No. 2 (2024): April - Juni
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.v24i2.5749

Abstract

The area of mangrove ecosystems in West Nusa Tenggara Province continues to decline each year. One of the threatening factors that substantially contribute to such condition is socioeconomic activities of human beings in fulfilling their needs. An effort that can be made primarily to preserve the mangrove ecosystem is to quantify the economic value of environmental services provided by the mangrove ecosystem as a whole, so that the existence and sustainability of the mangrove ecosystem could be maintained. This research aims to calculate the total economic value of mangrove ecosystem services which indicate the four categories of ecosystem services including supporting services, provisioning services, regulatory services and cultural services. The research was carried out using a survey method by collecting data and information from location of this study to obtain actual data regarding the existence of the mangrove ecosystem. The results of the analysis show that the total economic value of mangrove ecosystem environmental services is 963,888,060/year. This value is divided into provider services (supply services) amounting to Rp. 153,002,250, regulatory services (arrangement services) Rp. 598,339,702, supporting services (support services) Rp. 2,243,250, and cultural services (cultural services) Rp. 210,308,857. The magnitude of the total economic value of mangrove ecosystem environmental services can be a reference for the government in determining compensation for services if there is degradation to mangrove ecosystem resources in the area.
Percentage of Coral Reef Lifeforms Using Sentinel-2A at the Gili Air Dive Site A'zom, As'ad Humam; Hilayana, Sitti; Wahyudi, Rhojim
Jurnal Biologi Tropis Vol. 25 No. 4b (2025): 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.v25i4b.10466

Abstract

Indonesia possesses approximately 51,000 km² of coral reef ecosystems, yet their condition continues to decline due to both human activities and natural factors. One affected area is the Gili Matra Marine Tourism Park (TWP), particularly the Gili Air dive sites, where significant coral reef degradation has been observed. This study aims to determine the percentage of coral lifeforms and assess the accuracy of Sentinel-2A satellite imagery in mapping coral reefs in the area. Field data were collected using the Underwater Photo Transect (UPT) method and analyzed with CPCe software. Sentinel-2A imagery was processed through sunglint correction water column correction and unsupervised classification using ENVI 5.3 and ArcGIS 10.8. The results show coral reef conditions in Gili Air range from moderate to poor, with the highest live coral cover at Air Slove and the lowest at Hans Reef. A total of eleven coral lifeform types were identified. Image classification produced four benthic habitat classes with an overall accuracy of 60.5% and a Kappa index of 18.3%, meeting the minimum standard set by the Indonesian National Standard The study demonstrates that integrating UPT data and Sentinel-2A imagery is effective for mapping coral reefs, although higher-resolution imagery is recommended for better substrate differentiation.
Co-Authors A'zom, As'ad Humam Abd Saddam Mujib Akbar Rochyadi Ashari, Rowi Asmileen, Suci Dwi Asri, Yuliana Ayu Adhita Damayanti Bagus Dwi Hari Setyono Chandrika Eka Larasati Chandrika Eka Larasati Chandrika Eka Larasati, Chandrika Eka Dandy Saleky Desna Bagus Suhendar Devi, Lokita Diniariwisan, Damai Dwiyanti, Septiana Edwin Jefri Fadillah, Fitri Fakhrurrozi Fakhrurrozi Fitriani, Syawalina Gigentika, Soraya Hendri Susilo Hilayana, Sitti Ibadur Rahman Idris Idris Inayah Yasir Inayah Yasir Jamal Basmal, Jamal Jefri, Edwin Kholilah, Nenik Lalu Ferdi Alfarisi Murdin Lestariningsih, Wiwid Andriyani Lestrariningsih, Wiwid Andriyani Lumbessy, Salnida Yuniarti M. Farid Samawi M. Farid Samawi, M. Farid Mahardika Rizqi Himawan Martanina, Martanina Muhammad Marzuki Muhammad Sumsanto Murdin, Lalu Ferdi Alfarisi Nanda Diniarti Niechi Valentino Nunik Cokrowati Nurliah Nurliah Buhari, Nurliah nurliah, nurliah Nyoman Widi Artha Putra Paryono Putra, Brilliant Rudzaky Ridwan Rahman, Ibadur Rangga Idris Affandi Rusmin Nuryadin Sadikin Amir Sahrul Alim Sakina, Sholihati Lathifa Sakinah, Sholihati Lathifa Saptono Waspodo Sholihati Lathifa Sakina Siagian, Raja Aditya Sahala Siahaya, Patrick Alexander Sitti Hilyana Sitti Hilyana Soraya Gigentika Sultansyah, Muhammad SUWARTI Syahrial Syahrial Syawalina Fitria Ta'yuni, Qur'a Utami, Widia Tri Wahyudi, Rojim Wiwid Andriyani Lestariningsih Yasir Z, Muhammad Fayyadh A.