Master of Environmental Science, The University of Western Australia
Bachelor of Applied Science, Jakarta Fisheries University
RESEARCH, TEACHING, or OTHER INTERESTS
Environmental Science, Nature and Landscape Conservation, Management, Monitoring, Policy and Law
27
Scopus Publications
837
Scholar Citations
14
Scholar h-index
16
Scholar i10-index
Scopus Publications
The spatio-temporal analysis of land use changes & above-ground carbon stock in Sumbawa mangrove ecosystem, Indonesia Jaka Putra Rahmajati, Vina Nurul Husna, Yulius Yulius, Taslim Arifin, Hadiwijaya L. Salim, et al. Anthropocene Coasts, 2026 Mangrove deforestation in Indonesia amounts to roughly 18,209 ha per year (18.26 MtCO₂e/year −1 ). However, spatial and temporal integrative research in eastern Indonesia's coastal areas remains limited. This study aims to analyse mangrove forests' condition and spatio-temporal changes, compute above-ground carbon (AGC) as a basis for sustainable coastal management in Sumbawa Regency and support the 2030 Nationally Determined Contribution (NDC) target. This research merges UAV-RGB data (July 2024) and multitemporal PlanetScope imagery (2016 and 2024) to develop a Canopy Height Model (CHM) and calculate the AGC. Land use classification was accomplished using Object-Based Image Analysis (OBIA)—Random Forest (RF), while changing trends were assessed using Modules for Land Use Change Evaluation/Simulations (MOLUSCE). AGC at the study site was in the range of 21—168 $${\\text{MgC}.\\text{ha}}^{-1}$$ MgC . ha - 1 (mean = 72.3 $${\\text{MgC}.\\text{ha}}^{-1}$$ MgC . ha - 1 , total = 8,999.9 $$\\text{MgC}$$ MgC . The investigation found a change of 37.89 ha of mangrove area to barren and shrubland, resulting in an AGC loss of 2,739.5 $$\\text{MgC}$$ MgC . However, there has been an increase in land use and changes in aquaculture and agriculture. This study proposes a novel approach by merging UAV data and time-series satellite images to increase the accuracy of AGC prediction in data-sparse locations. A nature-based Solution (NbS) is advocated as an integrated method for adaptive mangrove restoration and conservation, while still supporting the demands of the local community. This research presents a geographical framework that may be duplicated to create inclusive and adaptable coastal resource management plans and directly contribute to reaching the 2030 NDC targets.
Spatial Dynamics of Mangrove Community Ecosystem in Muaragembong, Indonesia: Integrating Drone Data, NDVI, and Support Vector Machine (SVM) Bellaputeri, Yulius, Hadiwijaya Salim, Yudi Nurul Ihsan, Mega Laksmini Syamsuddin, et al. Journal of Marine and Island Cultures, 2025 The mangrove forest in Muaragembong has experienced fluctuations in area over time, prompting this study to analyze the dynamics of mangrove community changes from 2019 to 2023. The study focuses on two main areas in Muaragembong: Muara Nawan and Muara Kuntul. The approach integrates remote sensing, including Planetscope satellite imagery and aerial photographs from DJI Phantom 3 Pro taken directly in 2019. The methodology combines remote sensing technology, Normalized Difference Vegetation Index (NDVI) analysis, Support Vector Machine (SVM) algorithm, and drone validation. The classification results obtained two dominant mangrove genera: Avicennia sp. and Rhizophora sp.. Spectrally, Avicennia sp. reflects a greater amount of near-infrared than Rhizophora sp. with a difference range of 10–15%. Validation and accuracy assessment showed a high level of accuracy with an Overall Accuracy value of 89% and a Kappa Coefficient value of 0.83. There was an increase in Muara Nawan of 7.1 hectares, while Muara Kuntul experienced a reduction of 2 hectares. The changes in mangrove communities occur due to rehabilitation, land-use conversion, and local utilization of mangrove resources. Overall, this study shows the effectiveness of integrating the SVM algorithm, drone data, and NDVI analysis to monitor mangrove community dynamics over 5 years.
Temporal variability on Seagrass Cover and Species Composition in a Tourism Hotspot: a case study in Derawan Island Mariska Astrid Kusumaningtyas, Andi Zulfikar, Agustin Rustam, Hadiwijaya L. Salim, Yusmiana P. Rahayu, et al. Bio Web of Conferences, 2024 Seagrass ecosystems in Derawan Island provide crucial services to coastal communities, including serving as a food source for sea turtles. However, like many coastal areas, seagrass ecosystem in Derawan Island faces significant challenges. One major issue is related to tourism, which affects seagrass both through land use changes for tourism development and through various tourism activities. This study aims to assess the resilience of the seagrass ecosystem on Derawan Island by examining temporal variability in seagrass cover and community structure. Permanent plots were established to monitor changes in seagrass cover and community composition. The observations were conducted following the SeagrassWatch method. Data were collected three times, in September 2018, March 2019, and August 2019. Seagrass cover during 3 times monitoring showed fluctuate trend (averaging 42.3%, 33.2%, and 32.3%, respectively). Pioneer species such as H. pinifolia dominated the seagrass meadow, maintaining a consistently higher cover compared to other species. Conversely, the species T. hemprichii was observed at lower levels, likely due to overgrazing by sea turtles, which may have prevented its recovery. This study provides valuable insights into the status and resilience of seagrass ecosystems in a tourism hotspot and offers information that could be useful for managing seagrass ecosystem on Derawan Island.
Biomass carbon stocks in conserved and rehabilitated mangroves of Indonesia: case studies from Biduk-Biduk, Karimunjawa, Pati and Indramayu Restu Nur Afi Ati, Khairunnisa Khairunnisa, Yusmiana P. Rahayu, Mariska A. Kusumaningtyas, Agustin Rustam, et al. Bio Web of Conferences, 2024 Mangroves could potentially contribute to global climate change adaptation and mitigation by absorbing carbon with large amounts and storing it in the sediment and biomass for a long time. The purpose of this study is to estimate the potential stock of carbon and sequestration in conserved and rehabilitated mangroves. It was conducted at four locations including Biduk-Biduk, Karimunjawa, Pati, and Indramayu. The allometric equations method was used to calculate the potency of carbon stock and sequestration in the mangrove. Results show that mangroves in conservation areas have higher carbon stock and sequestration than mangroves in rehabilitated areas. Mangrove in Karimunjawa has higher diversity but the total carbon stock are lower than Biduk- biduk which has total carbon storage of 1,266,997.73 Mg C which potentially absorb 4.65 t CO2e. Total carbon stock in Pati and Indramayu (rehabilitated mangroves) ranged from 2,878.31 to 43,885.63 Mg C which potentially absorb 0.01 to 0.16 t CO2e. Regression analysis showed a positive correlation between mangrove density and carbon stock in conserved and rehabilitated mangroves. The results show that conserved mangroves are more effective in absorbing and storing carbon than rehabilitated mangroves. Monitoring of rehabilitated mangroves is important to maintain and enhance carbon absorption and storage.
Coastal Hazards in the Sunda Strait: Mitigation Strategy and Coastal Management A Heriati, E Mustikasari, T Solihuddin, H L Salim, A Daulat, et al. Iop Conference Series Earth and Environmental Science, 2024 Sunda strait is one of the strategic waters in Indonesia situated at the Indonesian archipelagic sea lane passage. The water is also known as one of the national strategic regions as governed in the Presidential Decree of 32/2019 about marine spatial planning. The coasts of the region have been developed as industrial areas, marine tourism and associated facilities, fisheries, agriculture, mining, etc. Despite the huge economic potency, Sunda Strait has high coastal hazards due to volcanic and tectonic activities. The Krakatau volcanic eruption in 1883 generated a tsunami run-up to ∼35 m high causing catastrophic damage along the coasts of Banten and Lampung and more than 36.000 people were reported killed. More recently, the eruption and flank collapse of the Anak Krakatau volcano generated a tsunami in the Sunda Strait causing severe damage, extensive inundation, and more than 430 deaths. Likewise, the Sunda Strait has a high potency of tsunami impacts generated by the earthquake sourced from the subduction zone known as megathrust. These conditions must become a valued lesson learned to all of us to raise awareness and preparedness through mitigation-based disaster management. Thus, we can reduce the impacts of the disaster and the high investment for post-disaster rehabilitation and reconstruction.
Maritime Culture of Bantik Ethnic Group From North Sulawesi, Indonesia Terry Kepel, Maya Warouw, Nani Undap, Steven Sumolang, August Daulat, et al. Journal of Marine and Island Cultures, 2024 Indonesia is well known as an archipelagic country on the equator with a huge population and diverse cultures where up to 70% of its area constitutes a maritime continent. This study investigates the maritime culture of Indonesia, a nation comprising 16,771 islands, 1,331 ethnicities, and 4,735 coastal villages, with a particular focus on the Bantik Ethnic Group in North Sulawesi Province. The primary objective of this study is to identify and document maritime cultural elements and local knowledge of the Bantik group, alongside assessing their past and current status. Employing a descriptive analysis through thematic coding of data collected via focus group discussions (FGD), in-depth interviews, field observations, and document analysis, the study reveals that the Bantik has a rich maritime culture rooted in agrarian coastal life and historical ocean connections. However, urbanization poses significant threats to their traditional practices and language, while rural Bantik communities remain largely unaffected by these changes. This research underscores the importance of preserving the Bantik's intrinsic cultural values amidst modern challenges.
Changes in Seagrass Community Structure in Response to Sediment Load and Excess Nutrients, and its implication to Carbon Stocks in the Berau Marine Conservation Area Agustin Rustam, Mariska Astrid Kusumaningtyas, Hadiwijaya L. Salim, Devi Dwiyanti Suryono, Restu Nur Afi Ati, et al. Journal of Ecological Engineering, 2024 As the urgency to reduce carbon emission increases, seagrass ecosystems have recently received attention due to their capacity to take up and store high amounts of carbon. Protection of this ecosystem is key to increase resilience to climate change. However, in some of the Marine Protected Areas (MPAs), seagrass ecosystems are still under threat. This study aims to investigate the current condition of seagrass ecosystems and compare it to the previous study before MPA was established in the Berau coastal water. SeagrassWatch method was used to measure seagrass community structure. Other proxies were also used to explain factors affecting seagrass condition such as total suspended solid (TSS) and sedimentary stable isotopes to identify the source of organic carbon. The percentage cover of seagrass in this study were categorized as not healthy (<29–59.9%), which was statistically related to TSS. The higher TSS resulted in the lower seagrass cover, as observed in the Rabu Rabu island located adjacent to mainland. Changes in seagrass composition were observed, including the emergence of larger species of E. acoroides and T. hemprichii in the islands located adjacent to mainland. The spatial and temporal changes of seagrass ecosystems observed in Berau MPA should be taken into consideration that conservation on seagrass ecosystems needs to be prioritized by improving the MPA function to avoid further loss of carbon from seagrass ecosystems.
Sedimentary seagrass carbon stock and sources of organic carbon across contrasting seagrass meadows in Indonesia Yusmiana P. Rahayu, Mariska A. Kusumaningtyas, August Daulat, Agustin Rustam, Devi D. Suryono, et al. Environmental Science and Pollution Research, 2023 Seagrass meadows are an important component of coastal ecosystems globally, and they capture and store organic carbon in living biomass and sediments. Geographical estimates of blue carbon in seagrass habitats are regionally biased, with limited information from the Indo-Pacific region, including Indonesia. Seagrass extent in Indonesia is declining rapidly, and it has been suggested that marine protected areas (MPAs) are an important instrument to support protection of seagrass ecosystems and their services. Thus, this study is aimed at quantifying and comparing sedimentary carbon stocks and sources of organic carbon from seagrass meadows located in undisturbed areas outside MPA, disturbed areas outside MPA, and within MPA in three small islands in Indonesia. The sediment carbon stocks from this study ranged from 19.81 to 117.49 Mg C ha−1, with the highest stock measured inside MPA (77.15 ± 1.38 Mg C ha−1), followed by undisturbed outside MPA (36.08 Mg C ha−1), and the lowest stock at disturbed outside MPA (21.86 ± 0.31 Mg C ha−1). The predominant source of organic carbon in disturbed meadows was from coastal POM (particulate organic matter, ~ 36%), while in MPA and undisturbed sites, the main source was from seagrass, with ~ 38% and ~ 60% contributions, respectively. The results of this study add more data and information on seagrass blue carbon potential from three different islands with different degrees of disturbance in Indonesia.
Integrated Land–Sea Spatial Planning for Disaster Risk Reduction in Tanah Laut Regency, South Kalimantan, Indonesia KP Setiawan, K Kasman, A Putra, B Budimawan, T Arifin, Yulius, ... Integrated Environmental Assessment and Management, vjag035 , 2026 2026
The spatio-temporal analysis of land use changes & above-ground carbon stock in Sumbawa mangrove ecosystem, Indonesia JP Rahmajati, VN Husna, Y Yulius, T Arifin, HL Salim, R Rahmania, ... Anthropocene Coasts 9 (1), 13 , 2026 2026 Citations: 1
Connectivity of green-blue carbon ecosystems and its implication on sediment carbon sources and stocks in Berau Coastal Water, Indonesia MA Kusumaningtyas, TL Kepel, HL Salim, T Solihuddin, RNA Ati, ... Journal of Ecological Engineering 27 (3), 90-101 , 2026 2026
Maritime Culture of Bantik Ethnic Group From North Sulawesi, Indonesia Terry Louise Kepel, Steven Sumolang, Maya Pinkan Warouw, August Daulat, Nani ... Journal of Marine Island and Cultures 13 (Institution for Marine & Island … , 2024 2024 Citations: 3
Coastal Hazards in the Sunda Strait: Mitigation Strategy and Coastal Management A Heriati, E Mustikasari, T Solihuddin, HL Salim, A Daulat, D Purbani IOP Conference Series: Earth and Environmental Science 1350 (1), 012030 , 2024 2024 Citations: 1
Assessment of a small island’s groundwater resilience under the pressure of anthropogenic and natural stresses on Tunda Island, Indonesia T Solihuddin, J Prihantono, A Daulat, R Bramawanto, J Risandi, TL Kepel, ... Environmental Earth Sciences 83 (12), 380 , 2024 2024 Citations: 5
Biomass carbon stocks in conserved and rehabilitated mangroves of Indonesia: Case studies from Biduk-Biduk, Karimunjawa, Pati and Indramayu RNA Ati, K Khairunnisa, YP Rahayu, MA Kusumaningtyas, A Rustam, ... BIO Web of Conferences 134, 02003 , 2024 2024 Citations: 3
Temporal variability on Seagrass Cover and Species Composition in a Tourism Hotspot: a case study in Derawan Island MA Kusumaningtyas, A Zulfikar, A Rustam, HL Salim, YP Rahayu, ... BIO Web of Conferences 134, 02001 , 2024 2024
Changes in seagrass community structure in response to sediment load and excess nutrients, and its implication to carbon stocks in the Berau Marine conservation area A Rustam, MA Kusumaningtyas, HL Salim, DD Suryono, RNA Ati, ... Journal of Ecological Engineering 25 (9) , 2024 2024 Citations: 3
Aboveground carbon stock of marine mangroves in Kepulauan Seribu Islands MA Kusumaningtyas, TL Kepel, RNA Ati, HL Salim, A Rustam, ... IOP Conference Series: Earth and Environmental Science 1251 (1), 012003 , 2023 2023 Citations: 4
Sedimentary seagrass carbon stock and sources of organic carbon across contrasting seagrass meadows in Indonesia YP Rahayu, MA Kusumaningtyas, A Daulat, A Rustam, DD Suryono, ... Environmental Science and Pollution Research 30 (43), 97754-97764 , 2023 2023 Citations: 23
Water Security In Tunda Island, Banten Indonesia: Potency & Threat Kepel, Solihuddin, Risandi, Daulat, Heriati, Mustikasari, Mardiany, Hong Journal of Marine and Island Cultures 12 (Institution for Marine & Island … , 2023 2023 Citations: 8
Preliminary Study of Marine Debris Composition from Fisherman Activities: A Case Study on Cikidang Fishing Port, Pangandaran NR Prasetiawan, N Sudirman, HL Salim, RNA Ati, TL Kepel, A Daulat, ... IOP Conference Series: Earth and Environmental Science 1118 (1), 012082 , 2022 2022 Citations: 6
Preliminary study to estimate the potential input of solid waste to the area of fishing port, case study: Karangantu Fishing Port HL Salim, N Sudirman, RNA Ati, TL Kepel, A Daulat, MA Kusumaningtyas, ... IOP Conference Series: Earth and Environmental Science 1118 (1), 012057 , 2022 2022 Citations: 1
Low-cost investigation of wave dynamics across low energy reef environments in Indonesia J Risandi, T Solihuddin, TL Kepel, A Daulat, A Heriati, E Mustikasari, ... IOP Conference Series: Earth and Environmental Science 1119 (1), 012033 , 2022 2022 Citations: 2
Panimbang Coastal Area Planning based on Disaster Mitigation A Heriati, T Solihuddin, MI Marzuki, T Arifin, D Purbani, S Husrin, TL Kepel, ... IOP Conference Series: Earth and Environmental Science 1095 (1), 012005 , 2022 2022
Biodiversity and Aquatic Vegetation Succession in Biawak Island Marine Protected Area, Indramayu-West Java AA Hutahaean, A Rustam, A Daulat, YP Rahayu, DD Suryono, HL Salim, ... Jurnal Segara 18 (1), 37-46 , 2022 2022 Citations: 1
Determining The Capacity of Temporary Evacuation Shelter in Carita and Labuan District Pandeglang Regency D Purbani, M Ramdhan, HL Salim, A Daulat, A Heriati, B Ontowirjo, ... Jurnal Segara 18 (1), 13-24 , 2022 2022 Citations: 3
Carbon sequestration potential in the rehabilitated mangroves in Indonesia MA Kusumaningtyas, TL Kepel, T Solihuddin, AA Lubis, ADP Putra, ... Ecological Research 37 (1), 80-91 , 2022 2022 Citations: 46
Distribution of marine debris in Jakarta Bay and its implication to the coastal ecosystem N Sudirman, DD Suryono, A Daulat, A Rustam, HL Salim, MH Jayawiguna IOP Conference Series: Earth and Environmental Science 925 (1), 012017 , 2021 2021 Citations: 5
MOST CITED SCHOLAR PUBLICATIONS
Kualitas perairan Natuna pada musim transisi MA Kusumaningtyas, R Bramawanto, A Daulat, WS Pranowo Depik Jurnal 3 (1), 10-20 , 2014 2014.0 Citations: 111
Stok karbon dan struktur komunitas mangrove sebagai blue carbon di Tanjung Lesung, Banten RNA Ati, A Rustam, TL Kepel, N Sudirman, M Astrid, A Daulat, ... Jurnal Segara 10 (2), 119-127 , 2014 2014.0 Citations: 103
Assessing carbon stock and sequestration of the tropical seagrass meadows in Indonesia AJ Wahyudi, S Rahmawati, A Irawan, H Hadiyanto, B Prayudha, M Hafizt, ... Ocean Science Journal 55 (1), 85-97 , 2020 2020.0 Citations: 93
Field survey and numerical modelling of the December 22, 2018 Anak Krakatau tsunami JC Borrero, T Solihuddin Pure and Applied Geophysics 177 , 2020 2020.0 Citations: 63
Peran ekosistem lamun sebagai blue carbon dalam mitigasi perubahan iklim, studi kasus Tanjung Lesung, Banten A Rustam, TL Kepel, RN Afiati, HL Salim, M Astrid, A Daulat, ... Jurnal Segara 10 (2), 107-117 , 2014 2014.0 Citations: 55
Carbon sequestration potential in the rehabilitated mangroves in Indonesia MA Kusumaningtyas, TL Kepel, T Solihuddin, AA Lubis, ADP Putra, ... Ecological Research 37 (1), 80-91 , 2022 2022.0 Citations: 46
Ekosistem lamun sebagai bioindikator lingkungan di P. Lembeh, Bitung, Sulawesi Utara A Rustam, TL Kepel, MA Kusumaningtyas, RNA Ati, A Daulat, ... Jurnal Biologi Indonesia 11 (2) , 2016 2016.0 Citations: 37
Pedoman pengukuran karbon di ekosistem padang lamun A Rustam, NS Adi, A Daulat, W Kiswara, DS Yusup, RA Rappe Institut Teknologi Bandung. Bandung , 2019 2019.0 Citations: 36
Dampak Tsunami Selat Sunda Desember 2018 Di Provinsi Banten dan Upaya Mitigasinya T Solihuddin, HL Salim, S Husrin, A Daulat, D Purbani JURNAL SEGARA Учредители: Agency for Marine and Fisheries Research and … , 2019 2019.0 Citations: 31
Sebaran kandungan CO2 terlarut di perairan pesisir selatan Kepulauan Natuna A Daulat, MA Kusumaningtyas, RA Adi, WS Pranowo Depik Jurnal 3 (2), 166-177 , 2014 2014.0 Citations: 27
Sedimentary seagrass carbon stock and sources of organic carbon across contrasting seagrass meadows in Indonesia YP Rahayu, MA Kusumaningtyas, A Daulat, A Rustam, DD Suryono, ... Environmental Science and Pollution Research 30 (43), 97754-97764 , 2023 2023.0 Citations: 23
Dinamika struktur komunitas lamun Kepulauan Karimunjawa, Kabupaten Jepara A Rustam, YPR Ningsih, DD Suryono, A Daulat, HL Salim Jurnal Kelautan Nasional 14 (3), 179-190 , 2019 2019.0 Citations: 21
Mangrove forest change in Nusa Penida marine protected area, Bali-Indonesia using Landsat satellite imagery A Daulat, WS Pranowo, SN Amri International Journal of Remote Sensing and Earth Sciences 15 (2), 141-156 , 2018 2018.0 Citations: 17
Cadangan karbon ekosistem mangrove di Sulawesi Utara dan implikasinya pada aksi mitigasi Perubahan iklim TL Kepel, RNA Ati, A Rustam, YP Rahayu, MA Kusumaningtyas, A Daulat, ... Jurnal Kelautan Nasional 14 (2), 87-94 , 2019 2019.0 Citations: 14
S. Pranowo, W.(2014). Kualitas perairan Natuna pada musim transisi MA Kusumaningtyas, R Bramawanto, A Daulat Depik 3 (1), 10-20 , 0 Citations: 13
Study of coastline changes and land use change in marine protected area (Case study: Derawan Island, East Kalimantan Province) D Purbani, M Ramdhan, HL Salim, A Daulat, D Dwiyanti, G Winarso, ... IOP Conference Series: Earth and Environmental Science 561 (1), 012056 , 2020 2020.0 Citations: 11
Fishing ground mapping based on Chlorophyll-a distribution using aqua Modis satellite imagery in the fisheries management area (FMA) 712 Y Yulius, V Aidina, M Ramdhan, A Daulat E3S Web of Conferences 324, 01007 , 2021 2021.0 Citations: 9
Ekologi dan Struktur Komunitas Lamun di Teluk Ratatotok, Minahasa Tenggara, Sulawesi Utara MA Kusumaningtyas, A Rustam, TL Kepel, RNA Ati, A Daulat, ... Jurnal Segara 12 (1) , 2016 2016.0 Citations: 9
Water Security In Tunda Island, Banten Indonesia: Potency & Threat Kepel, Solihuddin, Risandi, Daulat, Heriati, Mustikasari, Mardiany, Hong Journal of Marine and Island Cultures 12 (Institution for Marine & Island … , 2023 2023.0 Citations: 8
Sunda strait Tsunami impact in Banten Province and its mitigation measures T Solihuddin, HL Salim, S Husrin, A Daulat, D Purbani Jurnal Segara 16 (1), 15-28 , 2020 2020.0 Citations: 8