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All Journal HAYATI Journal of Biosciences Indonesian Journal of Oceanography Casuarina: Environmental Engineering Journal
Sembiring, Agustinus
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Agriculture, Biological Sciences & Forestry Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Energy Engineering Environmental Science Immunology & microbiology

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Studi Dasar Kesehatan Lingkungan di Kecamatan Hu’u, Sumbawa Barat, NTB, Indonesia: Bahasa Indonesia Kharistanto, Robertus Tegar Kurnia; Aprilia, Hesti Dwi; Fahlevy, Karizma; Sembiring, Agustinus; Suroso, Adi
Casuarina: Jurnal Teknik Lingkungan Vol 3 No 1 (2025): CEEJ OCT 2025
Publisher : LRI Universitas Muhammadiyah Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33506/ceej.v3i1.4937

Abstract

Good environmental quality is essential to support the optimal life and development of communities. Hu’u District, Dompu Regency, possesses abundant natural resource potential; however, human activities, especially agriculture, can affect the local environmental conditions. This study aims to evaluate the environmental health status in Hu’u District, focusing on groundwater quality, soil, and air parameters based on the standards outlined in the Regulation of the Minister of Health of the Republic of Indonesia Number 2 of 2023. Sampling conducted during the wet season (February–March 2023) at nine groundwater locations, ten soil locations, and five air sampling sites around villages in Hu’u District. Physical, chemical, and microbiological analyses were performed to assess water and soil quality. The results showed that several groundwater parameters, such as color, turbidity, and total dissolved solids (TDS), exceeded the established thresholds, likely due to natural organic matter, mineral dissolution, and agricultural activities. Total coliform bacteria were detected at several points, indicating potential domestic waste contamination, although Escherichia coli was not found. Concentrations of heavy metals include Barium (Ba), Copper (Cu), and Zinc (Zn), in some soil locations exceeded quality standards, suspected to be associated with agricultural activities and active geological characteristics. Additionally, air quality for chemical parameters is classified as good, but CO concentrations need to be prioritized for monitoring as its potential to increase due to the burning of agricultural waste activities. These findings provide an important basis for developing adaptive environmental management policies in Hu’u to maintain ecosystem sustainability and community quality of life.
Ocean Wave Modelling in Cempi Bay, West Nusa Tenggara during Northwest and Southeast Monsoon Hidayat, Esa Fajar; Havis, Muchammad Iqbal; Sembiring, Agustinus; Fahlevy, Karizma; Abdullah, Faizal Ade Rahmahuddin
Indonesian Journal of Oceanography Vol 7, No 4 (2025): Indonesian Journal of Oceanography
Publisher : University of Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijoce.v7i4.29242

Abstract

Coastal regions in Indonesia, such as Cempi Bay in West Nusa Tenggara, are strongly influenced by seasonal monsoon systems, which significantly affect wave dynamics and coastal processes. As the Northwest Monsoon (NWM) and Southeast Monsoon (SEM) exert non-uniform effects along Indonesia’s coastline, accurate wave modeling is essential to support coastal management, fisheries, and disaster mitigation in this area. This study applies a numerical wave model driven by monsoonal wind data, supplemented with bathymetry and open-boundary conditions, to simulate and analyze ocean wave characteristics in Cempi Bay during the NWM and SEM periods, focusing on significant wave height ( ) and dominant wave period ( ). Model performance was evaluated using Mean Absolute Percentage Error (MAPE), correlation coefficient ( ), and Root Mean Square Error (RMSE). During NWM,  achieved a MAPE of 15.49%,  = 0.55, and RMSE = 0.19 m, indicating good agreement, while the initial SEM run showed a high MAPE of 42.83% for  that improved to 20.16% after scaling the  input by 79%, reducing the RMSE from 0.48 m to 0.26 m and increasing  from 0.67 to 0.68. Spatial analysis revealed distinct wave propagation patterns between the monsoons and confirmed lower wave energy in the inner part of Cempi Bay, highlighting the importance of capturing seasonal wave variability for effective coastal infrastructure planning and monsoon-adapted management strategies.
Assessment of Macrobenthos Assemblages Along the Seabed Characteristic in the Cempi Bay, West Nusa Tenggara, Indonesia: A Case Study in the Dry Season Fahlevy, Karizma; Sembiring, Agustinus; Kaessari Magenta, Rias; Iqbal Havis, Muchammad; Suroso, Adi; Nauval, Rahmat; P. H. Simanjuntak, Charles
HAYATI Journal of Biosciences Vol. 33 No. 2 (2026): March 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.2.540-555

Abstract

The ecosystem in Cempi Bay, Indonesia, is known for its diverse coastal ecosystems. Gathering baseline data to understand the habitat and its fauna is essential. The study aims to update macrobenthos data and identify natural patterns across sediment gradients, specifically in the dry season. Cempi Bay has three distinct areas: the lower reach (open sea), the middle reach (mixing water), and the upper reach (influenced by freshwater). The most dominant classes in the macrobenthic assemblages were Gastropoda, Bivalvia, and Polychaeta, especially in the lower and middle reaches with sand and silty sand seabed textures. However, the upper reach area with sandy silt textures showed a different pattern of macrobenthic assemblages, with fewer classes, leaving only Gastropoda and Bivalvia. The feeding habits of macrobenthos also varied, with carnivores, deposit feeders, and suspension feeders dominating the lower and middle reach areas. It is important to continue monitoring macrobenthos to understand if these patterns are natural or caused by environmental changes.
Co-Authors Aprilia, Hesti Dwi Fahlevy, Karizma Faizal Ade Rahmahuddin Abdullah Hidayat, Esa Fajar Iqbal Havis, Muchammad Kaessari Magenta, Rias Kharistanto, Robertus Tegar Kurnia Muchammad Iqbal Havis Nauval, Rahmat P. H. Simanjuntak, Charles Suroso, Adi