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All Journal Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut BERKALA SAINSTEK JFMR (Journal of Fisheries and Marine Research) Samakia: Jurnal Ilmu Perikanan JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) Journal of Marine and Coastal Science Biodiversitas Journal of Biological Diversity
Lisa Nur Hidayah
Department Of Fisheries, Faculty Of Fisheries And Marine Science, Universitas Brawijaya. Jl. Veteran 1, Malang 65145, East Java, Indonesia
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Engineering Environmental Science Immunology & microbiology Mathematics Physics Public Health Social Sciences Other

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Estimasi Ketersediaan Ikan dan Kebutuhan Bahan Baku Industri Pengolahan Ikan Di PPN Brondong Lamongan Lisa Nur Hidayah; Iin Solihin; Eko Sri Wiyono; Mochammad Riyanto
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.v13i1.40569

Abstract

The Brondong Fishing Port is the largest in East Java. The catches landed in the Brondong fishing port increase, but they are insufficient to meet the raw material necessity of the existing processing industry. The study aims at estimating fish availability and the necessity of raw materials for the fish processing industry in the Brondong fishing port. This research was conducted from January to March 2022 by using a descriptive method. Data were collected through interviews and a literature study. The results revealed that the installed capacity for eight fish processing industries in the Brondong fishing port counted as 123,300 tons/year. Starry triggerfish, Lizard fishes, Streaked spine foot, freckled goatfish, squid, croaker, red snapper, spotted sil, grouper, threadfin breams, hardtail, big eyes, and yellow pike conger were all necessary for the processing industry. In contrast, the estimation of fish availability for the fish processing industry at Brondong fishing port counted as 45,086 tons/year. It indicated a gap between fish availability and the demand from the fish processing industry in the Brondong fishing port. This may impact the fish processing industry's development in the Brondong fishing port. Keywords: Raw material necessity, fish availability, fish processing industry
Community Structure of Fishes the Association with Seagrasses at Bama Beach, Baluran National Park, Situbondo, East Java Setyanto, Arif; Andriani, Dina; Sulkhani Yulianto, Eko; Tumulyadi, Agus; Bintoro, Gatut; Djoko Lelono, Tri; Adhihapsari, Wirastika; Nur Hidayah, Lisa; Isdianto, Andik; Zakiyah, Umi; Lanudia Fathah, Aulia; Kurnia Wardana, Novar; Mahardika Putri, Berlania
Journal of Marine and Coastal Science Vol. 13 No. 3 (2024): SEPTEMBER
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmcs.v13i3.61211

Abstract

Seagrass bed has an important role for biota in waters. The existence of fish in seagrass is influenced by other ecosystems close to seagrass, such as mangroves and coral reefs. This study focuses on fish associated with seagrass in Bama Beach. The data include seagrass coverage and the number of fish for the Diversity, Uniformity, and Dominance. The study was carried out on March 15 to 20, 2018 using the Underwater Visual Census. Results show that seagrass cover was highest in seagrass stations near mangroves (62,66%), while at stations near coral reefs was 37,66. The composition of fish associated with seagrass near mangroves was 361 individuals, while near reefs was 1.454 individuals. The values of diversity, uniformity, and dominance of fish associated with seagrass near mangroves are 2,62; 0,88; and 0,09 respectively while those associated with coral reefs have values of 2,93; 0,85; and 0,06. Family Aulostomidae was dominant in the morning at the station near mangroves, and in the afternoon was dominated by Apogonidae. At the station near coral reefs, the Family Pomacentridae was dominant both in the morning and afternoon. The seagrass conditions in this study are in the healthy category with quite diverse fishes. The level of fish diversity in seagrass was influenced by habitats associated with seagrasses than seagrass cover levels. The condition of Bama Beach as a conservation area is quite good, but the activity of tourists around the coastline must be monitored to maintain the environment.
Identifikasi Spesies dan Estimasi Nilai Produksi Ikan Kerapu (Epinephelus spp.) di Pelabuhan Tangkahan Kandangsemangkon: Analisis Data Perikanan yang Tidak Tercatat: Identification of Species and Estimation of Production Value of Grouper Fish (Epinephelus spp.) at Tangkahan Kandangsemangkon Port: Analysis of Unreported Fisheries Data Lelono, Tri Djoko; Bintoro, Gatut; Tumulyadi, Agus; Fuad, Fuad; Yulianto, Eko Sulkhani; Sutjipto, Darmawan Okto; Waliyuddin, Achmad; Hidayah, Lisa Nur; Widodo, Anung; Mahiswara, Mahiswara
JFMR (Journal of Fisheries and Marine Research) Vol. 9 No. 2 (2025): JFMR on July
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.2025.009.02.1

Abstract

Penelitian ini bertujuan mengidentifikasi spesies kerapu (Epinephelus spp.) serta mengestimasi volume produksi hasil tangkapan kerapu yang tidak tercatat di Tangkahan Kandangsemangkon, Lamongan. Data primer diperoleh melalui identifikasi spesies hasil tangkapan, dan pencatatan volume produksi di Tangkahan Kandangsemangkon. Data sekunder berupa data produksi resmi di Pelabuhan Perikanan Nusantara (PPN) Brondong. Analisis data menggunakan identifikasi visual spesies, kategorisasi spesies pendukung perikanan kerapu berdasarkan Unit of Assessment (UoA). Hasil penelitian menunjukkan terdapat tiga spesies target utama, yaitu Epinephelus fuscoguttatus, Plectropomus maculatus, dan Epinephelus areolatus. Volume produksi yang tidak tercatat selama periode penelitian mencapai 12,33% dari total produksi kerapu di wilayah tersebut. Spesies pendukung yang teridentifikasi terdiri dari enam spesies primer utama, empat spesies primer minor, satu spesies sekunder utama, dan lima spesies sekunder minor. Hasil ini menunjukkan bahwa keterlibatan aktif nelayan dalam   pengumpulan data spasial serta pencatatan produksi secara partisipatif berperan penting dalam memperbaiki akurasi data perikanan untuk mendukung pengelolaan sumber daya yang berkelanjutan.   This research aims to identify grouper species (Epinephelus spp.) and estimate the volume of unrecorded grouper catch production at Tangkahan Kandangsemangkon, Lamongan. Primary data were obtained through the identification of landed species and the recording of production volume at Tangkahan Kandangsemangkon. Secondary data consisted of official production data from the Brondong Fishing Port. Data analysis involved visual species identification and categorization of supporting species for the grouper fishery based on the Unit of Assessment (UoA). The research results indicate the presence of three main target species: Epinephelus fuscoguttatus, Plectropomus maculatus, and Epinephelus areolatus. The unrecorded production volume during the research period reached 12.33% of the total grouper production in the area. The supporting species identified consisted of six major primary species, four minor primary species, one major secondary species, and five minor secondary species. These findings suggest that the active involvement of fishermen in spatial data collection and participatory production recording plays a crucial role in improving the accuracy of fisheries data to support sustainable resource management.
Produktivitas dan Pola Musim Penangkapan Lemuru (Sardinella lemuru) dengan Alat Tangkap Purse Seine yang didaratkan Di Pelabuhan Perikanan Nusantara (PPN) Prigi Kabupaten Trenggalek Wirastika Adhihapsari; Wahida Kartika Sari; Meliani Sandia Pramesti; Lisa Nur Hidayah
Samakia : Jurnal Ilmu Perikanan Vol 15 No 2 (2024): Samakia: Jurnal Ilmu Perikanan
Publisher : Faculty of Science and Technology University Ibrahimy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35316/jsapi.v15i2.5738

Abstract

Lemuru (Sardinella lemuru) merupakan salah satu komoditas perikanan pelagis kecil yang tersebar hampir diseluruh wilayah Indonesia. Permintaan yang tinggi memiliki potensi terhadap penurunan hasil tangkapan sehingga upaya pengelolaan sumberdaya lemuru sangat dibutuhkan untuk menjamin keberlanjutan pemanfaatannya. Tujuan penelitian ini untuk mengetahui fluktuasi produksi lemuru, menentukan tren fluktuasi catch per unit effort (CPUE), dan pola musim penangkapan lemuru dengan alat tangkap purse seine di PPN Prigi. Pengambilan data dilaksanakan pada bulan Agustus 2023, bertempat di PPN Prigi dengan metode deskriptif yang berfokus di PPN Prigi. Data yang digunakan meliputi data produksi bulanan lemuru (kg) dan upaya penangkapan lemuru (trip) dengan alat tangkap purse seine di 10 tahun terakhir (2012-2022). Hasil penelitian menunjukkan bahwa produksi lemuru berfluktuasi dengan kecenderungan meningkat setiap tahunnya. Peningkatan produksi Lemuru terjadi mulai tahun 2019 dan tertinggi pada tahun 2020 dan kembali mengalami penurunan pada tahun 2021 dan 2022. Hasil perhitungan nilai CPUE dalam kurun waktu 10 tahun berfluktuatif namun cenderung mengalami peningkatan. Nilai CPUE terendah terdapat pada tahun 2017 sebesar 0.89 kg/trip dan nilai CPUE tertinggi terdapat pada tahun 2021 sebesar 541.97 kg/trip. Nilai Indeks Musim Penangkapan dapat memberikan informasi terkait waktu yang tepat dalam menentukan rencana kegiatan penangkapan oleh nelayan. Hasil penelitian menunjukkan bahwa puncak musim penangkapan lemuru di PPN Prigi terjadi pada bulan Oktober-Januari.
Pengelolaan Berkelanjutan Sumber Daya Ikan Cakalang (Katsuwonus pelamis) Di Perairan Selatan Prigi, Trenggalek, Jawa Timur Indonesia Gatut Bintoro; Fetriyani Fetriyani; Wildan Al Farizi; Kristina Marsela; Wirastika Adihapsari; Lisa Nur Hidayah; Supriatna Supriatna; Andik Isdianto; Arief Setyanto; Agus Tumulyadi; Vian Dedi Pratama; Dewa Gede Raka Wiadnya; Tri Djoko Lelono; Aisyiyah Nurmarina Bestari
Samakia : Jurnal Ilmu Perikanan Vol 16 No 2 (2025): Samakia : Jurnal Ilmu Perikanan
Publisher : Faculty of Science and Technology University Ibrahimy

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35316/jsapi.v16i2.8132

Abstract

Prigi waters belongs to the Republic of Indonesia's fisheries management area (FMA 573), which includes the South Indian Ocean of the island of Java to Nusa Tenggara. The species of large pelagic fish occurring in Indonesian waters include tuna comprising: madidihang (Thnunnus albacares), bigeye tuna (Thunnus obesus), albacore (Thunnus alalunga), bluefin tuna (Thunnus maccoyii), long tailed tuna (Thunnus mackerel). The small species of tuna include Skipjack tuna (K. Pelamis), Euthynnus affinis and Auxis thazard caught by purse seine, gillnet, troll line and payang fishing gear. Research purposes were to estimate value of maximum sustainable yield (MSY), total allowable catch (TAC), maximum economic yield (MEY), and open access (OA), to suspect rate and status utilization of Skipjack tuna (K. pelamis). Data analysis in this research was convertion of fishing gear, surplus production model by Schaefer, Fox, and Gordon-Schaefer model. The results of the conversion analysis of fishing gears are determined using a standard fishing gear, which is troll line as fishing gear standard. Result showed that sustainable potential obtained catch and effort of Skipjack tuna (K. pelamis) in MSY condition around 810 ton/year and 2,020 trip/year, and in TAC condition 648 ton/year and 1,616 trip per year, while in bioeconmic analysis in MEY condition was 680 ton/year and 1211 trip/year so that a profit Rp. 4,136,008,186, and in OA condition around 778 ton/year and 2,423 trip/year where the profit obtained Rp. 0. Utilization rate of Skipjack tuna (K. pelamis) was 106% so that the status of the stocks categories was Over Exploited
Peramalan Produksi Ikan Hasil Tangkapan di Pelabuhan Perikanan Pantai Bulu Tuban Dengan Menggunakan Metode Sarima: Forecasting of Fish Catch Production at Bulu Tuban Fishing Port Using the Sarima Method Hidayah, Lisa Nur; Fuad; Marsela, Kristina
JFMR-Journal of Fisheries and Marine Research Vol. 10 No. 1 (2026): 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.2026.010.01.8

Abstract

Produksi ikan hasil tangkapan yang didaratkan di Pelabuhan Perikanan Pantai (PPP) Bulu Tuban menunjukkan fluktuasi bulanan dengan pola musiman yang jelas, sehingga diperlukan pendekatan peramalan yang mampu merepresentasikan dinamika tersebut. Penelitian ini bertujuan mengidentifikasi pola deret waktu produksi ikan bulanan di PPP Bulu Tuban dan membangun model peramalan menggunakan Seasonal Autoregressive Integrated Moving Average (SARIMA). Data yang digunakan berupa data sekunder produksi ikan bulanan periode Januari 2019–Desember 2024 sebanyak 72 observasi. Pemodelan dilakukan mengikuti prosedur Box–Jenkins melalui visualisasi deret waktu, differencing non-musiman dan musiman , identifikasi kandidat model berdasarkan ACF dan PACF, serta estimasi dan seleksi model. Kinerja model dievaluasi menggunakan Bayesian Information Criterion (BIC), Root Mean Square Error (RMSE), dan Mean Absolute Percentage Error (MAPE), sedangkan diagnostik residual diuji dengan Ljung–Box. Hasil menunjukkan bahwa SARIMA merupakan model terbaik dengan BIC 10,797, RMSE 199,346, MAPE 207,607, dan residual yang memenuhi asumsi white noise . Model ini mampu merepresentasikan pola historis dan komponen musiman data, namun karena nilai MAPE masih tinggi, hasil peramalan lebih tepat diposisikan sebagai proyeksi pola umum produksi untuk tahun 2025 daripada prediksi numerik presisi tinggi pada setiap bulan.   Fish catch production landed at Bulu Tuban Fishing Port exhibits monthly fluctuations with a clear seasonal pattern, indicating the need for a forecasting approach capable of representing such dynamics. This study aimed to identify the monthly time-series pattern of fish production at Bulu Tuban Fishing Port and to develop a forecasting model using the Seasonal Autoregressive Integrated Moving Average (SARIMA) approach. The analysis used secondary monthly fish production data from January 2019 to December 2024, comprising 72 observations. Modeling followed the Box–Jenkins procedure through time-series visualization, non-seasonal differencing, seasonal differencing, identification of candidate models based on ACF and PACF, and model estimation and selection. Model performance was evaluated using the Bayesian Information Criterion (BIC), Root Mean Square Error (RMSE), and Mean Absolute Percentage Error (MAPE), while residual adequacy was assessed using the Ljung–Box test. The results show that SARIMA was the best model, with a BIC of 10.797, RMSE of 199.346, MAPE of 207.607, and residuals satisfying the white-noise assumption . The model was able to represent the historical and seasonal structure of the data; however, given the relatively high MAPE, the forecast should be interpreted more cautiously as a projection of general production patterns for 2025 rather than a high-precision monthly numerical prediction.
Observation of Scleractinian juveniles' composition, distribution, and density in shallow waters of Kondang Merak Beach, Southern Malang, East Java, Indonesia ROSDIANTO ROSDIANTO; OKTIYAS MUZAKY LUTHFI; ANWAN RAHMAT ARDIANSYAH; M. AZUREA BAHRI LUTHFI; ANDIK ISDIANTO; DESY SETYONINGRUM; ARIEF SETYANTO; LISA NUR HIDAYAH; AULIA LANUDIA FATHAH; BERLANIA MAHARDIKA PUTRI; NOVAR KURNIA WARDANA; SUPRIYADI SUPRIYADI
Biodiversitas Journal of Biological Diversity Vol. 25 No. 8 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250839

Abstract

Abstract. Rosdianto, Luthfi OM, Ardiansyah AR, Luthfi MAB, Isdianto A, Setyoningrum D, Setyanto A, Hidayah LN, Fathah AL, Putri BM, Wardana NK, Supriyadi. 2024. Observation of Scleractinian juveniles' composition, distribution, and density in shallow waters of Kondang Merak Beach, Southern Malang, East Java, Indonesia. Biodiversitas 25: 2663-2668. Kondang Merak Waters, a habitat for various hard corals that grow in flat areas of intertidal reefs, serve as a crucial location for understanding the influence of juvenile corals on the dynamics of coral communities in shallow waters. The research was conducted in 2020 in Kondang Merak, which studied the composition and abundance of young corals on natural substrates on shallow reef flats and reef slopes. Quadrant transects measuring 1x1 m were deliberately placed to observe coral juveniles at two research stations. Quadrant transects are placed along a 100-meter line transect. Visible juvenile corals are counted and identified at the genus or species level. The six types of coral juveniles identified are Favites flexuosa, Goniastrea favulus, Goniastrea aspera, Porites lobata, Montipora digitata and Montipora foliosa. The overall density of juveniles is low, ranging from 0.01-0.08 colonies m-2, with the highest density belonging to F. flexuosa and the lowest belonging to M. foliosa. The six species found showed a clustered distribution pattern, except for two species, namely Goniastrea aspera and M. foliosa, which showed a uniform distribution pattern. Coral juveniles have specific strategies depending on biology and environmental factors. This study revealed the distribution and composition of coral juveniles in intertidal areas as representative of dynamic ecosystems in coastal areas.
Assessing the relationship between coral cover and coral recruitment in the degraded ecosystems of Sempu Nature Reserve, East Java, Indonesia ANDIK ISDIANTO; RIDHA AYU WIBOWO; AMELINDA VIVIAN KUDRATI; DIAN ALIVIYANTI; MUHAMMAD ARIF ASADI; CITRA SATRYA UTAMA DEWI; ARIEF SETYANTO; TRI DJOKO LELONO; AGUS TUMULYADI; LISA NUR HIDAYAH; AULIA LANUDIA FATHAH; BERLANIA MAHARDIKA PUTRI; NOVAR KURNIA WARDANA; SUPRIYADI SUPRIYADI; OKTIYAS MUZAKY LUTHFI
Biodiversitas Journal of Biological Diversity Vol. 25 No. 9 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d250929

Abstract

Abstract. Isdianto A, Wibowo RA, Kudrati AV, Aliviyanti D, Asadi MA, Dewi CSU, Setyanto A, Lelono TD, Tumulyadi A, Hidayah LN, Fathah AL, Putri BM, Wardana NK, Supriyadi, Luthfi OM. 2024. Assessing the relationship between coral cover and coral recruitment in the degraded ecosystems of Sempu Nature Reserve, East Java, Indonesia. Biodiversitas 25: 3075-3083. The long-term survival of coral ecosystems requires the existence of coral recruitment variables that function as agents for future coral generations. The efficacy of this recruitment is crucial for the coral ecology in Sempu Waters, which is renowned for its ongoing loss in coverage. This research aims to determine hard coral cover, the number of coral recruits, and the correlation between hard coral cover and the number of coral recruits. Data was collected using the underwater photo transect method, a widely accepted and reliable technique for assessing coral cover and diversity, at five research stations during 3 observation periods (December 2022, February 2023, and April 2023) and then analyzed using pearson correlation to determine the relationship between the percentage of coral cover and the number of coral recruits. The results show that the coral cover of the Sempu Strait is classified as damaged and has decreased for 3 consecutive months, namely 14.28, 13.92, and 12.57%, and only 22 coral recruits were found in total with 6 identified genera, including Seriatopora, Porites, Pocillopora, Goniastrea, Pavona, and Acropora. The correlation between hard coral cover and coral recruits shows a positive relationship and a fragile level of closeness (r = 0.1119). The availability of stable substrates for recruitment, such as Dead Coral with Algae (DCA), Dead Coral (DC), and Rock (RK), can increase the potential for successful recruitment. However, coral recruits in the Sempu Strait also face competition from other biota, such as macroalgae and adult corals themselves.
Population and distribution patterns of juvenile scleractinian corals in Sempu Island Nature Reserve, East Java, Indonesia ANDIK ISDIANTO; SYAFRIAL YANUAR ISHAQ; ADE YAMINDAGO; FENI IRANAWATI; ADI TIYA YANUAR; LISA NUR HIDAYAH; KRISTINA MARSELA; WIRASTIKA ADHIHAPSARI; TRI DJOKO LELONO; AULIA LANUDIA FATHAH; DINI ATIKAWATI; BERLANIA MAHARDIKA PUTRI; NOVAR KURNIA WARDANA; SUPRIYADI SUPRIYADI; OKTIYAS MUZAKY LUTHFI
Biodiversitas Journal of Biological Diversity Vol. 25 No. 10 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d251010

Abstract

Abstract. Isdianto A, Ishaq SY, Yamindago A, Iranawati F, Yanuar AT, Hidayah LN, Marsela K, Adhihapsari W, Lelono TD, Fathah AL, Atikawati D, Putri BM, Wardana NK, Supriyadi, Luthfi OM. 2024. Population and distribution patterns of juvenile scleractinian corals in Sempu Island Nature Reserve, East Java, Indonesia. Biodiversitas 25: 3480-3490. Coral reefs, which play a vital role in tropical marine ecosystems, are threatened by anthropogenic and natural stressors, despite their important ecological and economic roles. This study examines the resilience of coral ecosystems through the lens of juvenile coral populations at Floating House Beach, which is part of the Sempu Island Nature Reserve, East Java, Indonesia. Using the Underwater Photo Transect (UPT) method along a 100-meter reference line with a 1 × 1-meter transect, our study found that coral cover was severely damaged, with live coral cover of only 18.67% and 17.61% at two observation stations, which was dominated by the life form CM (Coral Massive) at both stations. However, twelve juvenile coral genera were identified that showed potential for natural recovery, namely Acropora, Favia, Favites, Galaxea, Leptoseris, Montipora, Mycedium, Platygyra, Pocillopora, Porites, Stylophora, and Turbinaria. Juvenile coral densities were low, at 0.55 and 0.88 colonies/m², indicating a very low coral recruitment category with Pocillopora being the most common. Spatial distribution, analyzed using the Morisita Index, showed a predominantly clumped arrangement (Ip>0), indicating non-random aggregation of juveniles. The results of this study highlight the significant impact of environmental stressors on juvenile coral communities and underscore the urgent need for targeted conservation efforts to support coral resilience and recovery.
Environmental determinants of reef fish community structure in Sempu Strait, East Java, Indonesia ANDIK ISDIANTO; KHALIL GIBRAN; ADE YAMINDAGO; SYARIFAH HIKMAH JULINDA SARI; ADI TIYA YANUAR; DESY SETYONINGRUM; ARIEF SETYANTO; LISA NUR HIDAYAH; KRISTINA MARSELA; MUCHAMAD FAIRUZ HAYKAL; AULIA LANUDIA FATHAH; BERLANIA MAHARDIKA PUTRI; SUPRIYADI SUPRIYADI; OKTIYAS MUZAKY LUTHFI; DWI CANDRA PRATIWI
Biodiversitas Journal of Biological Diversity Vol. 25 No. 12 (2024)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d251214

Abstract

Abstract. Isdianto A, Gibran K, Yamindago A, Sari SHJ, Yanuar AT, Setyoningrum D, Setyanto A, Hidayah LN, Marsela K, Haykal MF, Fathah AL, Putri BM, Supriyadi, Luthfi OM, Pratiwi DC. 2024. Environmental determinants of reef fish community structure in Sempu Strait, East Java, Indonesia. Biodiversitas 25: 4781-4789. The Rumah Apung located in Sempu Strait, Malang District, East Java, Indonesia, is home to diverse coral reef ecosystems that provide vital ecological services and support local livelihoods. However, these ecosystems face significant threats from both natural environmental changes and anthropogenic activities. Understanding how environmental factors influence reef fish communities is critical to inform effective conservation strategies. This study investigated the influence of environmental factors on the community structure of coral reef fish in the Sempu Strait waters, East Java, using Underwater Visual Census (UVC) and Principal Component Analysis (PCA). Conducted from August 2023 to May 2024 at the Sempu Strait Floating House Station, this study aimed to assess the impact of water quality, substrate type, and food availability on the diversity and abundance of coral reef fish. The main results revealed a significant correlation between the community structure of coral reef fish and environmental variables such as water clarity, salinity (r = 0.65, p<0.01), pH (r = 0.55, p<0.05), dissolved oxygen (r = 0.70, p<0.01), and sediment type. Seasonal variations significantly affected water quality, with cold nutrient-rich water during the east monsoon increasing fish biomass by about 30%. Human activities, especially recreational diving and fishing activities, were correlated with a 20% decline in coral reef fish populations, highlighting the anthropogenic pressure on this ecosystem. PCA provides insight into the complex interdependencies within coral reef ecosystems, illustrating how multiple environmental factors combine to influence reef fish dynamics. The study concludes that effective management and conservation strategies, such as establishing marine protected areas, implementing community-based monitoring programs, and promoting sustainable tourism practices, are essential, supported by regular environmental monitoring, are essential to maintain the biodiversity and ecological integrity of coral reefs in the Sempu Strait. These strategies should address both natural environmental changes and anthropogenic impacts to mitigate their adverse effects on coral reef ecosystem conditions.
Co-Authors Ade Yamindago ADI TIYA YANUAR ADI TIYA YANUAR AGUS TUMULYADI Agus Tumulyadi Aisyiyah Nurmarina Bestari Almira Syawli AMELINDA VIVIAN KUDRATI ANDIK ISDIANTO ANDIK ISDIANTO ANDIK ISDIANTO Andik Isdianto ANWAN RAHMAT ARDIANSYAH ARIEF SETYANTO ARIEF SETYANTO ARIEF SETYANTO Arief Setyanto AULIA LANUDIA FATHAH AULIA LANUDIA FATHAH AULIA LANUDIA FATHAH BERLANIA MAHARDIKA PUTRI BERLANIA MAHARDIKA PUTRI CITRA SATRYA UTAMA DEWI Darmawan Ockto Sutjipto Darmawan Okto Sutjipto Desy Setyoningrum Dewa Gede Raka Wiadnya Dian Aliviyanti Dina Andriani DINI ATIKAWATI Djoko Lelono, Tri DWI CANDRA PRATIWI Eko Sri Wiyono Eko Sulkhani Yulianto FENI IRANAWATI Fetriyani Fetriyani Fuad Fuad Fuad Gatut Bintoro Iin Solihin KHALIL GIBRAN KRISTINA MARSELA KRISTINA MARSELA Kristina Marsela Lanudia Fathah, Aulia M. AZUREA BAHRI LUTHFI Mahardika Putri, Berlania Mahiswara, Mahiswara Marsela, Kristina Meliani Sandia Pramesti Mochammad Riyanto MUCHAMAD FAIRUZ HAYKAL MUHAMMAD ARIF ASADI NOVAR KURNIA WARDANA NOVAR KURNIA WARDANA NOVAR KURNIA WARDANA OKTIYAS MUZAKY LUTHFI OKTIYAS MUZAKY LUTHFI RIDHA AYU WIBOWO ROSDIANTO ROSDIANTO Setyanto, Arif Sulkhani Yulianto, Eko Supriatna Supriatna SUPRIYADI SUPRIYADI SUPRIYADI SUPRIYADI SYAFRIAL YANUAR ISHAQ SYARIFAH HIKMAH JULINDA SARI TRI DJOKO LELONO Tri Djoko Lelono Tumulyadi, Agus Umi Zakiyah, Umi Vian Dedi Pratama Wahida Kartika Sari Waliyuddin, Achmad Widodo, Anung Wildan Alfarizi Wirastika Adhihapsari Wirastika Adihapsari