Muhammad Wahyudin Lewaru
Departemen Ilmu Kelautan, Fakultas Perikanan Dan Ilmu Kelautan, Universitas Padjadjaran

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Plankton Diversity in Karst River, Masigit - Pawon Cave, West Java, Indonesia Muhammad Wahyudin Lewaru; Fifi Dwi Pratiwi; Sunardi Sunardi
Journal Omni-Akuatika Vol 15, No 1 (2019): Omni-Akuatika May
Publisher : Fisheries and Marine Science Faculty - Jenderal Soedirman University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (801.401 KB) | DOI: 10.20884/1.oa.2019.15.1.573

Abstract

Karst Citatah region has been known strategies economic value of biotic and a biotic resources. This study investigated plankton biodiversity potency on Cibukur and Cibodas rivers where it already made in Karst Citatah region, particularly on Masigit-Pawon. The result of four stations showed that Karst Masigit-Pawon region was high potency with Plankton biodiversity resources with Diversity and dominancy index almost 1. The numbers of Plankton identified were of 24 species of phytoplankton consist of 9 class and 16 species of zooplankton consists of 6 filum. The high abundance of Plankton was Navicula sp(5.280 species), Synedra sp(4.092 species), dan Cyclops sp(2.904 species) respectively.
KONDISI PERAIRAN DAN PENDUGAAN IKAN DI TELUK CILETUH, SUKABUMI JAWA BARAT BERDASARKAN PROFIL NUTRIEN DAN MAKROZOOBENTOS : The Water Quality of Ciletuh Bay, Sukabumi, West Java Based on the Nutrient Profile and Macrozoobenthos Yuniarti MS; Muhammad Wahyudin Lewaru; Wahyuniar Pamungkas; Ajeng Wulandari; Delilla Suhanda
Marine Fisheries : Journal of Marine Fisheries Technology and Management Vol. 13 No. 1 (2022): Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut
Publisher : Bogor Agricultural University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jmf.v13i1.36157

Abstract

Ciletuh Bay is a Global Geopark area since 2018 by UNCESCO. Ciletuh Bay is located in the south of Java Island which is directly facing the Indian Ocean, so Ciletuh Bays has unique water characteristics. This research aims to determine the condition of the waters of Ciletuh Bay in terms of physical, chemical, and biological parameters. This research was conducted in the dry season in June 2019 and the rainy season in February 2021. The parameters observed in this study were temperature, salinity, pH, dissolved oxygen, brightness, depth, ammpnia, nitrite, nitrate, phosphate, chlorophyll-a, sediment substrate, and macrozoobenthos. The results showed that the concentration of ammonia, nitrite, and chlorophyll-a had the highest values in the rainy season with values for each parameter of 0,028 mg/L; 1,663 mg/L; dan 2,82 mg/L. meanwhile, the highest concentration of nitrate and phosphate were found in the dry season with each having a value of 0,717 mg/L; dan 0,09 mg/L. The sediment substrate during both seasons is dominated by sand. Macrozoobenthos during the rainy season is dominated by the Gastropod class, while during the dry season it is dominated by the Bivalvia class.
Studi Metagenomik Sampel Perairan yang Diperkaya dari Wilayah Hilir Sungai Citarum dan Potensinya sebagai Agen Bioremediasi Fadia Mutiara Prastianti; Eri Bachtiar; Muhammad Wahyudin Lewaru; Moch Untung Kurnia Agung
Jurnal Pascapanen dan Bioteknologi Kelautan dan Perikanan Vol 17, No 1 (2022): Juni 2022
Publisher : Balai Besar Riset Pengolahan Produk dan Bioteknologi Kelautan dan Perikanan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/jpbkp.v17i1.794

Abstract

AbstrakPerairan Sungai Citarum banyak memperoleh limpasan limbah antropogenik dari darat yang dapat menimbulkan pencemaran lingkungan. Untuk mengatasi masalah pencemaran tersebut, bakteri dapat dimanfaatkan sebagai agen bioremediasi. Hingga saat ini belum tersedia informasi komunitas bakteri di Perairan Sungai Citarum, khususnya dari wilayah hilir Muara Gembong. Penelitian ini bertujuan untuk mengidentifikasi komunitas, kelimpahan, dan keanekaragaman bakteri dari Perairan Muara Gembong yang telah diperkaya dengan pendekatan metagenomik, serta analisis fungsional dengan melihat profil protein yang dimiliki dari bakteri yang teridentifikasi yang berpotensi sebagai agen bioremediasi. Pengambilan sampel air dilakukan di dua lokasi (A1 dan A2) dengan karateristik perairan yang berbeda. Sampel air estuari diperkaya dengan 0,2x Nutrient Broth. Sekuensing dilakukan dengan metode Next Generation Sequencing (NGS) menggunakan amplikon sekuensing platform Novaseq Illumina, dengan primer 16S rRNA region V3–V4 (341F dan 806R). Hasil identifikasi menunjukkan terdapat 37 genera, 19 famili, 13 ordo, 7 kelas, dan 4 filum bakteri dengan 49 OTU untuk sampel A1 dan 48 OTU untuk sampel A2. Kelimpahan tertinggi diperoleh pada kelas Gammaproteobacteria (99,82%) yang didominasi oleh genus Vibrio. Keanekaragaman bakteri pada kedua sampel diperkaya ini tergolong sedang dengan dominasi tinggi. Analisis fungsional menunjukkan kemampuan bakteri yang teridentifikasi mampu mendegradasi benzoate, dioxin, asam lemak, metana, naftalen, nitrotoluene, PAH, dan sulfur dengan protein dan enzim yang terlibat dalam metabolisme tersebut. Penelitian ini menunjukkan bakteri yang teridentifikasi pada Perairan Muara Gembong mempunyai potensi bioremediasi untuk cemaran lingkungan, seperti polutan organik dari logam berat. AbstractMuara Gembong waters is a downstream region of the Citarum watershed that receives anthropogenic runoff and affects water pollution. To overcome the problem of pollution, bacteria can be used as a bioremediation agent. Until now, information on the bacterial community in Citarum River waters has not been obtained, especially in the downstream area of Muara Gembong. This study aims to identify the community, abundance, and diversity of bacteria from Muara Gembong waters that have been enriched with a metagenomic approach, as well as functional analysis by looking at the protein profiles of the identified bacteria that have the potential as bioremediation agents. Water samples were taken at two locations (A1 and A2) with different water characteristics. Estuary water samples were enriched with 0.2x Nutrient Broth (NB). Amplicon sequencing of NGS by Novaseq Illumina platform was used in this research, using 16S rRNA primer region V3-V4 (341F and 806R). The results showed that 37 genera, 19 families, 13 orders, 7 classes, and 4 bacterial phyla were identified with 49 OTUs for A1 and 48 OTUs for A2. The highest abundance was obtained by the Gammaproteobacteria class (99.82%) which dominated by the Vibrio genera. The diversity level is classified as medium diversity with high dominance. Functional analysis showed the ability of the identified bacteria to degrade benzoate, dioxin, fatty acid, methane, naphthalene, nitrotoluene, PAH, and sulfur with proteins and enzymes involved in the metabolism. This study shows that identified bacteria in Muara Gembong waters are potentially appicable for bioremediation of the environment contaminants, such as organic pollutants and heavy metals.
ANALYSIS OF VEGETATION STRUCTURE IN THE MANGROVE ECOSYSTEM OF PENGARENGAN, PANGENAN, CIREBON REGENCY Lutfianti Mutmainah, Annisa; Arief, Mochamad Candra Wirawan; Lewaru, Muhammad Wahyudin; Sunarto, Sunarto; Arifin, Intan Khairunissa; Yasmin, Putri Auliya
Jurnal Perikanan Unram Vol 15 No 5 (2025): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v15i5.1872

Abstract

Mangrove ecosystems play an important role in maintaining coastal biological balance, protecting land from erosion, providing habitats for various biota, and functioning as effective carbon sinks. Indonesia has the largest mangrove area in the world, covering approximately 3.3 million hectares, but this ecosystem continues to experience degradation due to land conversion, with a rate of destruction reaching 530,000 hectares per year. This degradation reduces the ecological and economic functions of mangroves, necessitating vegetation structure analysis to assess the condition of the ecosystem. This study aims to analyze the vegetation structure of mangroves in Pengarengan Village, Pangenan District, Cirebon Regency, which is one of the oldest mangrove areas in Cirebon. Data collection was carried out at three stations using the Transect Line Plot method with plot sizes of 10×10 m² for trees, 5×5 m² for stakes, and 1×1 m² for seedlings. The parameters observed included density, frequency, and dominance, which were then used to calculate the Importance Value Index (IVI). The results showed that the mangrove vegetation at the study site was dominated by the species Rhizophora mucronata and Avicennia marina. The density of tree-level vegetation was classified as moderate to dense, with the highest density found at Station II (2,433 ind/ha) and the lowest density found at Station I (1,200 ind/ha). The INP value reached 300% for each species at all stations at the tree and stump levels, indicating the dominance of one species at each station