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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 Sains Teknologi dan Lingkungan (JSTL)

 1 
Kondisi Terkini Presentase Tutupan Terumbu Pada Masa Pandemi Covid-19 di Gili Air, Taman Wisata Perairan Gili Matra, Nusa Tenggara Barat: The Current Condition of the Coral Reef Cover Percentage during the Covid-19 Pandemic in Gili Air, Gili Matra Marine Protected Area, West Nusa Tenggara Nurliah Buhari; Mahardika Rizqi Himawan; Edwin Jefri; Paryono Paryono; Ibadur Rahman; Ayu Adhita Damayanti
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 7 No. 2 (2021): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v7i2.276

Abstract

Gili Matra Aquatic Tourism Park has two conservation targets, namely biological targets and social, cultural and economic targets. Coral reef ecosystems, apart from being a conservation target, are also an attraction for tourists to visit. This research was conducted to determine the condition of the coral reef ecosystem to be used as the basis for the management of conservation areas. The research was conducted by collecting coral reef data either through surveys or secondary data from the results of previous studies. Coral reef survey using the standard Line Intercept Transect method. The survey results show that the condition of coral reefs in the utilization zone is better than the core zone. Live coral cover in the utilization zone reached 71% so it was categorized as good, while in the core zone it only reached 8% so it was categorized as bad. Coral reefs in the core zone are unable to recover even though the number of tourists has decreased during the Covid-19 pandemic. Therefore, the location of the core zone on Gili Air needs to be evaluated further so that the effectiveness of Gili Matra TWP management can be improved.  Key words: coral reefs; Gili Matra; Conservation
Status Terkini Tutupan Terumbu Karang di Perairan Dangkal Pulau Bedil, Desa Labuan Bajo, Kabupaten Sumbawa, NTB Mahardika Rizqi Himawan; Eni Hidayati; Nurliah Buhari; Sitti Hilyana; Maulita Syahdina
JURNAL SAINS TEKNOLOGI & LINGKUNGAN 2021: Special Issue, Oktober 2021
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v0i0.277

Abstract

Bedil Island is included in the Keramat, Bedil, and Temudong Small Island Park (TPK), which was approved by the Regent of Sumbawa. Administratively, this island is included in the Labuan Bajo Village area, Sumbawa, NTB. There is the existence of coral reef ecosystems in these waters that form a reef flat and reef slope profile, that stretches to the southwest and northeast. By its designation as a small island park, the coral reefs in Bedil Island are used as an underwater tourism object. This study aims to determine the current condition of coral reef cover in the waters around Bedil Island, especially in the eastern and southern parts of the island. Coral reefs in the north and west area are limited and there is the existence of seagrass beds. The line intercept transect method is carried out by spreading the roll meter as far as 50 meters on the east and south sides of the island with a depth of 2-3 meters. The coral lifeform that is tangent with the roll meter is then recorded and then analyzed for the average percent cover, clustering status, and coral mortality index. Coral reefs in the eastern and southern parts of Bedil Island are classified as very good/excellent because they have a percent cover value above 75%. In addition, the coral mortality index value is also relatively small which indicates that the corals are living well. Clearwater conditions and locations far from human settlements are thought to be factors that support coral survival. However, the presence of dead coral algae and rubble still indicates a threat of damage even though the value is small. Algae life on the surface of dead coral also indicates that the coral has been dead for a long time. 
Sebaran Bakteri Coliform Sebagai Indikator Pencemaran Biologis Di Beberapa Sumber AirKecamatan Hu’u, Kabupaten Dompu Paryono Paryono; Nurliah Nurliah; Ibadur Rahman; Mahardika Rizqi Himawan
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 2 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i2.454

Abstract

Coliform bacteria are a group of bacteria that originate from human and animal feces in large numbers, so they are often used as indicators of food and water quality. This study aims to determine the condition of the aquatic environment based on biological indicators such as the abundance of coliform bacteria in river water and wells in Hu'u sub-district, Dompu district. Data on coliform bacteria and water quality were sourced from PT STM based on the survey results of PT Intertek and PT Sucofindo in several rivers and wells in 2021. The results of data analysis show that most rivers have coliform bacteria density values exceeding the quality standards set by the Ministry of Environment and Ministry of Health. This is probably because many residents and cattle still dispose of their feces in the river.
Understanding Enabling Factors for Community-Led Coral Reef Health Monitoring and Early Warning System through Participatory Action Research Eni Hidayati; Mahardika Rizqi Himawan; Edwin Jefri
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i4.560

Abstract

Coral reefs are under pressure from climate change and various factors, putting them at risk of a decline in resilience. This heightened vulnerability increases the likelihood of reaching a tipping point with the next shock or stressor. Identifying early warning indicators for tipping points is crucial for proactive coral reef management. Therefore, this study aims to comprehend the coral reef health parameters considered important and feasible for collection by local stakeholders, as well as identify factors facilitating the implementation of a community-based monitoring and early warning system in a fishers-dominated community. The approach used was Participatory Action Research. The results reveal twelve priority parameters deemed necessary by the local community and feasible for collection by local stakeholders, including the local community, university, and non-governmental organization. The identified parameters are: coral bleaching, visibility, temperature, pH, dissolved oxygen, salinity, current, coral percent cover, fish community, macroalgal canopy cover and composition, benthic composition, and plankton. Interpretive structural model and MICMAC analysis show nine enabling factors supporting the development of a community-led coral reef health monitoring and early warning system. These factors include team motivation, training and team capacity, connection with government, connection with university, facilitation by NGOs, supporting regulations, operational funds, access to equipment, and operation and maintenance of equipment. Team motivation stands out as the most influential factor, with strong driving power and dependence, making it crucial to manage as actions on it will have ripple effects on other factors.
Estimasi Cadangan Karbon Tegakan Mangrove di Lombok Barat, Nusa Tenggara Barat Lestariningsih, Wiwid Andriyani; Himawan, Mahardika Rizqi; Siagian, Raja Aditya Sahala; Majerus, Kara Muriel Angela; Putra, Brilliant Rudzaky Ridwan; Anggereni, Aprilia; Buhari, Nurliah
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 4 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i4.729

Abstract

Mangrove ecosystems are a vital form of aquatic ecosystem that significantly contribute to maintaining carbon balance in the atmosphere and support climate change mitigation efforts. Their ability to absorb and store carbon in both biomass and soil makes them among the most effective carbon sinks. This study aims to estimate the carbon storage of mangrove stands in the Gita Nada Mangrove Area, Sekotong, West Lombok. The research was conducted at three stations: Station 1 (Berambang), Station 2 (Siung), and Station 3 (Bangko-Bangko). Data collection involved a 10 x 10 meter transect, where species and diameter at breast height (DBH) data were recorded. Allometric equations were then applied to calculate biomass and carbon reserve values. The results identified four mangrove species: Rhizophora mucronata, R. stylosa, R. apiculata, and Avicennia marina. The average mangrove density at each station fell within the moderate to dense category, with values ranging from 1000 to 4666.66 individuals per hectare. The estimated carbon stocks of the mangrove stands were as follows: Station 1 had 149.33 tons per hectare, Station 2 had 28.38 tons per hectare, and Station 3 had 476.36 tons per hectare. These findings indicate significant differences in estimated carbon stock values across the stations. Overall, the results of this study provide crucial information to support conservation and restoration efforts for mangrove ecosystems in West Lombok, enhancing understanding of the role of mangroves in mitigating climate change.
Pola Pertumbuhan Karang Genus Acropora Hasil Transplantasi Pada Media Blok Mars dan Meja di Perairan Pantai Pandanan Lombok Utara Fitriani, Rahmah; Rosyada, Vivian; Adiba, Nur; Ardiansyah, Yanuar; Jefri, Edwin; Lestariningsih, wiwid Andriyani; Himawan, Mahardika Rizqi
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 3 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i3.749

Abstract

Pantai Pandanan yang terletak di Desa Malaka kecamatan Pemenang merupakan salah satu destinasi wisata pantai yang terletak di Lombok Utara. Pantai Pandanan memililiki ekosistem terumbu karang yang mendukung keanekaragaman hayati lokal dan merupakan bagian penting dari ekosistem laut setempat. Penelitian ini bertujuan untuk membandingkan pertumbuhan karang Acropora yang ditransplantasi menggunakan dua jenis media, yaitu blokmars dan meja, di perairan Pantai Pandanan, Lombok Utara. Penelitian dilakukan selama empat bulan, dari Mei hingga Agustus 2024, dengan pengamatan pertumbuhan panjang karang setiap bulan. Hasil penelitian menunjukkan bahwa karang yang ditransplantasi pada media blokmars mengalami pertumbuhan yang lebih signifikan dibandingkan dengan media meja. Rata-rata pertumbuhan karang pada media blokmars meningkat lebih cepat pada awal periode transplantasi, sedangkan pada media meja pertumbuhannya lebih lambat. Media blokmars terbukti lebih stabil dan efektif dalam mendukung pertumbuhan karang, karena memiliki struktur yang memfasilitasi perlengketan dan penyediaan nutrisi yang optimal. Berdasarkan hasil ini, media blokmars direkomendasikan sebagai pilihan yang lebih baik untuk kegiatan rehabilitasi terumbu karang
Spatial Distribution and Utilization of Marine Habitats by Green Turtle (Chelonia mydas) and Hawksbill Turtle (Eretmochelys imbricata) in the Gili Matra Island Marine Protected Area Lestariningsih, Wiwid Andriyani; Himawan, Mahardika Rizqi; Rahman, Ibadur; Araujo, Gonzalo; Adiwijaya, Cakra; Khaldun, Muhammad Hafidz Ibnu; Cahaya, Himaya Kartika; Alam, Dita Hikmatul; Hotmariyah, Hotmariyah
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 2 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v11i2.869

Abstract

Sea turtles are one of the key biota in coastal and marine ecosystems whose existence is not only ecologically important, but also holds social, cultural, and economic value. Indonesia, as the largest archipelagic country in the world, is home to six of the world’s seven sea turtle species, making it a globally significant habitat for the sea turtle life cycle. The Gili Matra Marine Protected Area, encompassing the three islands of Gili Trawangan, Gili Meno, and Gili Air, is one of the strategic regions with high potential for sea turtle conservation. This study aims to document and analyze the spatial distribution and habitat use of green turtles (Chelonia mydas) and hawksbill turtles (Eretmochelys imbricata) in the Gili Matra Marine Protected Area. Data collection was carried out during the period of September to October 2024, adjusted to weather conditions and water visibility. The method used was the Underwater Turtle Visual Census Methodology. The composition of sea turtle species and habitat characteristics were analyzed using descriptive analysis to summarize the patterns of species presence, habitat types, and environmental conditions observed during the survey. The findings indicate that the area supports both species, with sea turtles observed at various depths (9–16 meters) across multiple dive sites. The predominance of female individuals and the variation in species presence across sites suggest species specific habitat preferences and potential influences of environmental conditions. Both sea turtle was mostly observed in locations associated with coral reef structures.
Penilaian Kondisi Terumbu Karang Di Area Perairan Dangkal Tanjung Pantai Senggigi, Lombok Barat, Nusa Tenggara Barat Himawan, Mahardika Rizqi; Hariadi, Muhammad Dipa; Pratama, Alfian; Lestariningsih, Wiwid Andriyani
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 11 No. 2 (2025): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v11i2.879

Abstract

This study aims to assess the condition of coral reefs based on benthic composition in the shallow waters of Tanjung, Senggigi Beach, West Lombok, West Nusa Tenggara. Data collection was carried out through diving using the Underwater Photo Transect (UPT) method by analyzing 50 quadrat photos taken along a 50-meter transect line, processed with the CPCe software. The analysis revealed that live coral (Coral) was the most dominant benthic component, with an average cover of 91.38% ± 13.72%, which falls under the "very good" category. Macroalgae and abiotic components such as sand and coral rubble were present but in very small proportions. The coral community was dominated by complex growth forms such as Acropora tabular, Acropora branching, Coral foliose, and Coral massive, which are known for their relatively fast growth and adaptability to clear water with stable substrates. These findings indicate that the reef ecosystem in the waters of Tanjung Senggigi is in very good condition and provide a scientific foundation for developing effective management and conservation strategies for the area.
Kelimpahan dan Biomassa Ikan Karang di Kawasan Konservasi Perairan Gili Balu, Kabupaten Sumbawa, Nusa Tenggara Barat Himawan, Mahardika Rizqi; Hidayatullah, Rahmat; Prabuning, Derta; Lestariningsih, Wiwid Andriyani
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 10 No. 2 (2024): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v10i2.656

Abstract

The Gili Balu Marine Conservation Area (KKP), located in Sumbawa Regency, West Nusa Tenggara, is ecologically and economically significant due to its rich coral reef ecosystems. This research aims to measure the abundance and biomass of reef fish in the KKP Gili Balu, which can be used as a basis for evaluating the effectiveness of conservation efforts in maintaining marine biodiversity. The Underwater Visual Census (UVC) method was used, recording types of reef fish at ten observation points. The results showed that the highest abundance was found on Mandiki Island, with functional fish abundance reaching 2973 ind/ha, followed by Pasareang Barat Island (1903 ind/ha) and South Kalong (1600 ind/ha). The biomass of functional fish also reflects their important role in maintaining the balance of the coral reef ecosystem. This research contributes to the scientific understanding of marine biodiversity in the KKP Gili Balu and provides a basis for sustainable conservation management efforts. Additionally, the research recorded the presence of several coralivorous and economically important fish species, although they tend to be smaller compared to functional fish. Economically important fish in the KKP Gili Balu waters were found only at four observation locations: East Belang Island, North Belang, Kenawa, and Southwest Namo. The highest value was recorded at Kenawa Island, with 93 ind/ha. These fish tend to be rare in this area, possibly due to past fishing practices.
Studi Kuantitatif Kerapatan Lamun di Perairan Teluk Cempi: Implikasi untuk Konservasi dan Manajemen Sumber Daya Laut: Quantitative Study of Seagrass Density in the Waters of Cempi Bay: Implications for Conservation and Management of Marine Resources Lestariningsih, Wiwid Andriyani; Himawan, Mahardika Rizqi; Santika, Lora; Gigentika, Soraya; Wibisono, Rendy Vidya; Hernawati, Hernawati; Himawan, Cahya
JURNAL SAINS TEKNOLOGI & LINGKUNGAN Vol. 9 No. 4 (2023): JURNAL SAINS TEKNOLOGI & LINGKUNGAN
Publisher : LPPM Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jstl.v9i4.561

Abstract

Cempi Bay is an important water area with a rich and diverse ecosystem. One crucial component of marine ecosystem that plays a major role in maintaining the balance of the marine environment is seagrass. The objective of this research is to provide critical insights into the dynamics of seagrass populations in Cempi Bay and offer an overview of the broader coastal ecosystem's condition. The research, conducted in June-July 2021 at 5 research stations, employed the transect method. At each data collection point, three transect lines were created perpendicular to the coastline. The distance between transect lines was 100 m, and each transect consisted of 10 quadrants measuring 1x1 m with a 5 m distance for each quadrant. Four seagrass species were identified: Thalassia hemprichii, Cymodocea rotundata, Halodule pinifolia, and Cymodocea serrulata. These species were found on sand substrates, with the highest total density and percentage cover observed at Station 5 (1135.22 ind/m2 and 40.74%). The results highlight the necessity for routine monitoring, mapping, and further research to comprehend seagrass population dynamics and support effective conservation policies. Implementation of recovery strategies, water quality management, and continued research support is imperative to ensure the sustainability of seagrass ecosystems and marine resources in Cempi Bay.
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.