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All Journal El-Hayah : Jurnal Biologi Research Journal of Life Science JFMR (Journal of Fisheries and Marine Research) Jurnal Perikanan
Samuel, Pratama Diffi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Engineering Environmental Science Immunology & microbiology Medicine & Pharmacology

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Density and Biomass of Seagrass Beds and Its Threats on Lamongan Regency Dewi, Citra Satrya Utama; Yona, Defri; Samuel, Pratama Diffi; Maulidiyah, Rizqi Aimmatul; Syahrir, Ahdiya; Putri, Yandini Eka; Rakhmawan, Hilal; Fikri, Maulana
Research Journal of Life Science Vol 7, No 3 (2020)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rjls.2020.007.03.9

Abstract

This study aims to determine the density of seagrass species, seagrass biomass, and threats faced by seagrass communities in the Coastal District of Lamongan. The study was conducted in August to November 2019 in three coastal villages of Lamongan Regency, namely Tunggul Village (Station 1), Kranji (Station 2), and Banjarwati (Station 3). The stages of the study consisted of: preparation, data collection on density, threat data and seagrass stand samples, sample processing, and data analysis. The results showed that the total density of seagrass species at Stations 1, 2 and 3 was 160 stands / m2; 172 stands / m2; and 185 stands / m2. Furthermore, the total biomass of seagrass at Stations 1, 2 and 3 was 4633 gbk / m2, 2136 gbk / m2, and 9234 gbk / m2. In addition to seagrass species, seagrass density values also affect seagrass biomass. As development progresses in Lamongan Regency, it is known that the biggest threat of seagrass communities in the study site is human activity (anthropogenic), among others: anchor ships when anchored and the use of coastal areas as tourist areas, which often cleans up seagrass communities because they are deemed unfit to be enjoyed tourism sector.
Coral Reefs Health Status in the East Java: a Case Study in Banyuwangi, Situbondo, Probolinggo Samuel, Pratama Diffi; Dewi, Citra Satrya Utama; Azmi, Nur Fadholi Ulul; Anam, M.Choirul; DP, Imas; Setyorini, Dewi Nur; Hariani, Dyah Fitri; Fatmawati, Riska
Research Journal of Life Science Vol 8, No 2 (2021)
Publisher : Direktorat Riset dan Pengabdian Masyarakat, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rjls.2021.008.02.1

Abstract

Coral reef ecosystems are among the most productive natural biodiversity resources  in tropical coastal areas, within seagrass beds and mangrove forests. Besides, coral reefs have very high ecological impacts and economic value that are managed well and sustainably. Also, healthy ecosystems will undoubtedly provide more incredible benefits and values, so studies need to be conducted to determine the health of coral reefs. While P2O LIPI is an institution that is the guardian of coral reef health data in Indonesia, there is limited information related to the coastal areas of East Java that has not been widely reported. This study aimed to find out the percentage of living hard corals and the health status of the ecosystem at three reef sites: Banyuwangi, Situbondo, and Probolinggo. Field surveys were carried out in June-July 2019, using the Line Intercept Transect (LIT) method. The materials used in this study are Self-Contain Underwater Breath Apparatus-SCUBA diving equipment, roll meters, and an underwater camera. The results showed that the hard coral cover living in Banyuwangi accounted for 28.91%, Situbondo was 31.20%, and Probolinggo (34.77%). Therefore, this study interpreted that the coral reef ecosystem was a moderate category (25% - 49.9%).
Percentage of Hard Coral Cover and Coral Recruitment on in Bangsring Beach, Banyuwangi Regency Samuel, Pratama Diffi; Fakhri, Muhammad; Dewi, Citra Satrya Utama; Ellona, Jessica; Anam, M. Choirul
Research Journal of Life Science Vol 10, No 1 (2023)
Publisher : Direktorat Riset dan Pengabdian Masyarakat, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.rjls.2023.010.01.3

Abstract

One of the tourist attractions at Bangsring Beach is the condition of the coral reef ecosystem and unique marine biota that tourists can enjoy by snorkeling and diving. Based on research (Ekawati et al., 2021) using remote sensing, the area of live coral reefs on Bangsring Beach is as follows; 2005; 3.38, 2008; 2.61, 2011; 3.7, 2017; 3.98, 2020; 6.1 Ha). It can be said that the area of coral reefs increases yearly, although, in 2008-2011, it decreased by 32%. The results of the economic valuation explain that the (Total Economic Value) of the coral reef ecosystem in Bangsring Beach is 38.2 billion Rupiah/year or 2.9 billion Rupiah hectares/year. The use-value that has the largest economic value comes from tourism utilization of 25 billion or 60% of the Total Economic Value. The coral community structure includes Coral Branching, Coral Encrusting, Coral Massive, Coral Submaasive, and Coral Mushroom. Mushroom Coral is found solitary and shaped like a mushroom. The research data shows the average value of Bangsring Fish House cover is 82.5%. Fish house cover here is seen and assessed based on the presence of hard corals, soft corals, and algae. The average percentage of hard corals growing at the Bangsring Fish House was 30%, soft corals 21.5%, and algae 17.5%. Found 21 types of coral such as; Acropora, Favia, Turbinaria, Symphyllia, Goniastrea.
ANALYSIS OF MICROPLASTIC CONTAMINATION ON WATER AND SEDIMENT IN THE BRANTAS SUBWATERSHED OF THE MALANG AREA Buwono, Nanik Retno; Samuel, Pratama Diffi; Gifari, Ahmad Wahyu
Jurnal Perikanan Unram Vol 15 No 1 (2025): JURNAL PERIKANAN
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jp.v15i1.1347

Abstract

Microplastics are non-degradable contaminants that have been found in many river waters. Microplastics not only pollute water bodies but also become pollutants in river sediments. The Malang area is one of the areas passed by the Brantas River, which is the longest river in East Java and plays an important role for the community. The Brantas River has experienced a decline in water quality related to microplastic contamination. This study aims to analyze the types of microplastics and the abundance of microplastics found in water and sediment in the Brantas Subwatershed Malang Region. This study used a survey method and determined the sampling location point by purposive sampling. Microplastics found in water and sediment samples have the same 3 types, namely fragments, fibers and films. The fragment type was found to dominate in water samples by 38.62% and also in sediment samples by 76.13%. The abundance of microplastics in water was highest at Station 5 at 686.67 particles/m3 and lowest at Station 1 at 396.67 particles/m3. While the abundance of microplastics in the sediment was highest at Station 3 at 2,517.15 particles/kg and lowest at Station 2 at 1,779.93 particles/kg.
Kladistik Genera Famili Leiognathidae melalui Penelusuran Morfologi Eksternal dan Otolith: Cladistic Genera of Family Leiognathidae Based on External Morphology and Otolith Samuel, Pratama Diffi; Wiadnya, Dewa Gede Raka; Anam, M. Choirul; Setyanto, Arief; Khamidah, Nur; Yasmin, Delviega Aisyah; Astuti , Septiana Sri
JFMR (Journal of Fisheries and Marine Research) Vol. 9 No. 1 (2025): JFMR on March
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2025.009.01.15

Abstract

Anggota famili Leiognathidae atau Peperek termasuk dalam kategori minor commercial, berfungsi sebagai komoditas ketahanan pangan sehingga kurang mendapat perhatian untuk diteliti. Penelitian ini bertujuan untuk membuktikan hipotesis penemuan seluruh genera dari Leiognathidae pada perairan Pantai Jawa Timur. Sampel ikan dikoleksi dari hasil tangkapan nelayan dengan alat penangkapan ikan; Jaring Tarik, Cantrang, dan Mini-Trawl dari Januari 2023 sampai Oktober 2024. Analisis genus dilakukan melalui deskripsi morfologi eksternal, morfometri, dan penyelidikan otolith. Studi otolith dilakukan melalui koleksi sagittae dari tulang telinga di belakang otak. Analisis morfometri untuk memperjelas definisi bentuk tubuh menggunakan perangkat lunak TpsDig. Total 12 variabel morfologi digunakan untuk menjelaskan masing-masing kerabat pada genus. Sementara deskripsi otolith dianalisis dengan menggunakan 15 variabel bentuk, cekungan, dan tonjolan dari otolith. Dendogram dihasilkan dari analisis morfologi dan otolith untuk memisahkan kekerabatan di antara genus. Hasil analisis membuktikan bahwa terdeskripsi total 10 genera dari famili Leiognathidae yaitu; Leiognathus, Aurigequula, Eubleekeria, Photopectoralis, Nuchequula, Karalla, Gazza, Deveximentum, Equulites, dan Photolateralis. Genus Gazza ditemukan pada seluruh lokasi sampling. Namun genus Karalla hanya ditemukan pada lokasi sampling di Selatan Barat Jawa Timur (Pantai Dangkal Pacitan, dan Prigi Trenggalek). Hasil analisis dendogram berhasil menempatkan Equulites satu kerabat dengan Photolateralis, namun tidak berhasil memisahkan antara Leiognathinae dengan Gazzinae. Sebaliknya, analisis menggunakan morfologi otolith tidak berhasil menempatkan Equulites satu kelompok dengan Photolateralis, namun bisa memisahkan antara sub famili Leiognathinae dengan Gazzinae. Kondisi lingkungan geografis mungkin menjadi faktor utama terjadinya adaptasi morfologi eksternal dan otolith yang berbeda. Deskripsi morfologi dan otolith bisa digunakan sebagai indikator apomorfi genus. Analisis genetik melalui DNA barcoding masih diperlukan untuk menelusuri kekerabatan diantara genus.   Members of family Leiognathidae are included in the minor commercial category, functioning as a food security commodity so that they have received less attention for research. The study aims to prove the hypothesis of the discovery of all genera of Leiognathidae within coastal waters of East Java. Fish samples were collected from the catches of fishermen using fishing gear; Beach Seine, modified Danish Seine, and Mini-Trawl, from January 2023 to October 2024. Genera analysis was carried out through external morphological descriptions, morphometry, and otolith investigations. Otoliths were collection of sagittae from the ear bones behind the brain. Morphometric analysis to clarify the definition of body shape were using TpsDig software. A total of 12 morphological variables were used to describe each genus within family. While the otolith description was analyzed using 15 variables of shape, depression, and protrusion of the otolith. Each dendrogram was generated from morphological and otolith analysis to separate the clade among genera. The results of the analysis proved that all 10 genera of Leiognathidae were described, consisting of: Leiognathus, Aurigequula, Eubleekeria, Photopectoralis, Nuchequula, Karalla, Gazza, Deveximentum, Equulites, and Photolateralis. The genus Gazza was found in all sampling locations. However, the genus Karalla was only described in two sampling locations in Southwest of East Java (Pantai Dangkal Pacitan, and Prigi Trenggalek). The results of dendogram analysis succeeded in placing Equulites in the same clade as Photolateralis, but failed to separate Leiognathinae from Gazzinae. On the other hand, the analysis using otolith morphology failed to place Equulites in the same group as Photolateralis, but could separate Leiognathinae from Gazzinae. Geographical barriers and environmental factors might be the main factor in the occurrence of different morphological and otolith adaptations. Genera can be distinguished through external morphology and otolith description. Genetic analysis through DNA barcoding is still needed to trace the lineage among genera of Leiognathidae.
Community Structure of Transplanted Corals by Shelf Method at Bangsring Beach, Banyuwangi Samuel, Pratama Diffi; Utomo, Anisa Dwi Riskiani; Handziko, Rio Christy; Dewi, Citra Satrya Utama
El-Hayah:Jurnal Biologi Vol 10, No 3 (2025): EL-HAYAH (VOL 10, NO 3 September 2025)
Publisher : Program Study of Biology, Science and Technology Faculty, UIN Maulana Malik Ibrahim Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18860/elha.v10i3.35944

Abstract

Coral reef ecosystems that have been damaged require restoration actions. The study's goal was to identify transplanted coral species on Bangsring Beach, as well as to assess the importance of community structure and community role. Location is determined through selective sampling and direct data capture. Descriptive data analysis, including the diversity index, uniformity, and dominance. The community's part was determined through interviews and questionnaires distributed to the residents of Bangsring. Corals transplanted at Bangsring Banyuwangi Beach include 12 genera and 30 species of coral. The Acropora genus includes Favia, Merulina, Pavona, Pocillopora, Porites, Stylophora, Turbinaria, Nepthea, Tubipora, and Hetroxenia. Block 4 has the greatest diversity index (2.75), followed by blocks 3, 2, 5, and 1. Coral species diversity was relatively high throughout all blocks, with no dominant species. The role of local communities cannot be ruled out in the sustainability of coral reef conservation activities. The community's and managers' active participation in coral transplantation at Bangsring Beach is critical to its success. The transplanted corals at the Bangsring Beach Area are monitored on a regular basis to observe changes in the coral community structure.
DETERMINATION OF WATER QUALITY STATUS BASED ON HEAVY METAL CONTENTS IN THE RAINY AND DRY SEASON USING THE STORET INDEX IN PASURUAN SEA WATERS, EAST JAVA Herawati, Endang Yuli; Arfiati, Diana; Samuel, Pratama Diffi; Dina, Karina Farkha; Anugerah, Putri; Valina, Rahmi
JFMR (Journal of Fisheries and Marine Research) Vol. 5 No. 2 (2021): JFMR
Publisher : Faculty of Fisheries and Marine Science, Brawijaya University, Malang, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jfmr.2021.005.02.3

Abstract

Waters that are presumably contaminated with heavy metals need to be observed to ensure the level of pollution to perform water restoration. This study was aimed to determine the status of water quality based on heavy metal contents. The survey method was employed in this study, and it was conducted in Pasuruan sea waters in different seasons; September 2019 represented the dry season, and April 2020 represented the rainy season. The water sampling stations were chosen by using purposive sampling in three sampling locations: the sea waters of Kraton, Lekok, and Nguling districts. The heavy metals and water quality parameters were analyzed by using Storet Index. The results indicated that the highest level of heavy metals was found in Lekok waters in September, consisting of Hg (1.22 mg/l), Cd (1.20 mg/l), and Pb (0.55 mg / l). The seawater of Nguling district had the lowest content in April, while Kraton's seawater was moderate. The water quality status based on the Storet Index suggested that the sea waters of Kraton, Lekok, and Nguling districts were classified as moderately polluted with a score of -16 to -24. The highest score was in September in the rainy season with a score of -24 and the score in April in the dry season was -16. It means that the score is increasing but still in the moderately polluted category. The measurement results of temperature, pH, dissolved oxygen, salinity, and current velocity were in optimum results for aquatic organisms in the dry season or the rainy season. Regarding the water quality status in Pasuruan sea waters, it can be concluded that the heavy metal contents exceeded the quality standard set by the government. Therefore, improved management is required to prevent the deterioration of the pollution status in Pasuruan sea waters
Co-Authors Anam, M. Choirul Anam, M.Choirul Anugerah, Putri Arief Setyanto Astuti , Septiana Sri Azmi, Nur Fadholi Ulul Defri Yona Dewa Gede Raka Wiadnya Dewi Nur Setyorini, Dewi Nur Dewi, Citra Satrya Utama Diana Arfiati Dina, Karina Farkha DP, Imas Ellona, Jessica Endang Yuli Herawati Fatmawati, Riska Fikri, Maulana Gifari, Ahmad Wahyu Hariani, Dyah Fitri Maulidiyah, Rizqi Aimmatul Muhammad Fakhri Nanik Retno Buwono Nur Khamidah Putri, Yandini Eka Rakhmawan, Hilal Rio Christy Handziko, Rio Christy Syahrir, Ahdiya Utomo, Anisa Dwi Riskiani Valina, Rahmi Yasmin, Delviega Aisyah