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All Journal Jurnal Ilmu Pertanian Indonesia Biospecies ILMU KELAUTAN: Indonesian Journal of Marine Sciences Journal of Marine Research Jurnal Kelautan : Indonesian Journal of Marine Science and Technology ECSOFiM (Economic and Social of Fisheries and Marine Journal) Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Panrita Abdi - Jurnal Pengabdian pada Masyarakat JURNAL ENGGANO Jurnal Akuatiklestari Dinamika Maritim Jurnal Penelitian Perikanan Indonesia Bawal : Widya Riset Perikanan Tangkap Jurnal Penelitian Kehutanan Bonita Journal of Marine and Coastal Science Unri Conference Series: Community Engagement SIMBIOSA Jurnal Abdi Masyarakat Indonesia Jurnal Abdi Panca Marga Agrikan: Jurnal Agribisnis Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Journal of Fisheries & Marine Journal Serambi Engineering (JSE) Jurnal Perikanan Darat dan Pesisir (JPDP)
Zulfikar, Andi
Universitas Maritim Raja Ali Haji
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The presence of harmful algae in the coastal waters of Bintan Island, Riau Islands Tri Apriadi; Winny Retna Melani; Andi Zulfikar; Deni Sabriyati; Wahyu Muzammil; Nuralim Pasisingi
Depik Vol 13, No 1 (2024): APRIL 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.1.34135

Abstract

Environmental mitigation measures are being undertaken as a proactive approach to prevent the adverse consequences associated with Harmful Algal Blooms (HABs). Presently, there is a lack of comprehensive information regarding the occurrence of HABs in the waters surrounding Bintan Island, and routine monitoring to assess the potential for eutrophication is absent. This research should begin by gathering information about potential sources that contribute to the emergence of HABs, the specific types of algae with the capacity to trigger HABs The primary objective of this study is to identify the harmful algae species present in the coastal waters of Bintan Island. The research was conducted in August 2023, with the sampling process taking place at four specific locations within the coastal waters of Bintan Island. These sampling stations were selected deliberately to capture the varying activities predominant in each respective area. The microalgae found consisted of four groups, namely Bacillariophyta, Cyanophyta, Dinophyta, and Chlorophyta. Bacillariophyta is a group of microalgae with the highest abundance proportion at all observation stations. Harmfull Algae found in the coastal waters of Bintan Island generally come from the Dinophyta group of the types Ceratium sp., Peridinium sp., Prorocentrum sp., and Dinophysis sp. Harmful microalgae from the Dinophyta group were found at all research stations, with the highest proportion of abundance at Station 2 (6%) and the lowest at Station 3 (1%). The difference in these findings is thought to be due to the dynamics of the hydrosanographic parameters of the waters, especially nutrient concentrations.Keywords:BintanCeratiumDinophytaHarmfulMicroalgae
KARAKTERISTIK BIOLOGI IKAN PARI KEKEH (Rhynchobatus spp.) SEBAGAI TANGKAPAN SAMPINGAN DI PERAIRAN ACEH JAYA Hermansyah, Rizky Fajar; Taryono, Taryono; Zairion, Zairion; Adrianto, Luky; Zulfikar, Andi; Booth, Hollie; Ichsan, Muhammad
BAWAL Widya Riset Perikanan Tangkap Vol 14, No 2 (2022): (Agustus) 2022
Publisher : Politeknik Kelautan dan Perikanan Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/bawal.14.2.2022.95-103

Abstract

Ikan pari kekeh (Rhynchobatus spp.) adalah salah satu jenis ikan yang dilindungi dan memiliki nilai ekonomis tinggi. Tingginya harga jual pari kekeh berdampak pada meningkatnya usaha tangkap serta kerusakan habitat pari kekeh yang hidup berasosiasi dengan ikan target nelayan. Informasi terkait aspek biologi sangat berguna bagi pembuat kebijakan dalam memanfaatkan sumberdaya yang berkelanjutan. Tujuan penelitian ini adalah memberikan informasi mengenai nisbah jenis kelamin ikan yang tertangkap, sebaran ukuran panjang, dan potensi sumber daya ikan pari kekeh (Rhynchobatus spp.) di perairan Aceh Jaya. Pengumpulan data pendaratan pari kekeh meliputi jenis kelamin, panjang total dan jumlah trip melaut pada periode tahun 2017-2021. Jumlah tangkapan total pari kekeh yang didaratkan sebanyak 191 ekor yang terdiri dari Spesies Rhynchobatus australiae sebanyak 133 ekor (69,63%), Rhynchobatus laevis sebanyak 55 ekor (28,80%) dan Rhynchobatus springeri sebanyak 3 ekor (1,57%). Ukuran pari kekeh yang tertangkap didominasi oleh ikan muda (immature), yaitu berada pada kelas panjang 65-86cm. Nisbah jenis kelamin ikan jantan dan betina 1:2,41 menunjukan hasil yang tidak seimbang. CPUE menunjukan nilai rata-rata yang fluktuatif, hubungan hasil tangkapan dengan upaya yaitu positif signifikan dengan persamaan linear y = 0,6687x + 1,6338 dengan R2 =0,9706 atau r = 0,9852 yang dapat diartikan bahwa setiap peningkatan upaya berbanding lurus dengan peluang pari kekeh yang tertangkap.Wedgefish (Rhynchobatus spp.) is one of the protected fish species that has high economic value. The high selling price of the wedgefish has an impact on increasing fishing efforts and damage to the habitat of the wedgefish that live in association with the target fish of fishermen. Information related to biological aspects is beneficial for policymakers in utilizing sustainable resources. The purpose of this study was to provide information on the sex ratio of wedgefish, length distribution, and potential resources of the wedgefish in the waters of Aceh Jaya. The wedgefish landing data collection included sex, total length, and the number of fishing trips from 2017 to 2021. The total number of wedgefish obtained was 191. The number consisted of 133 fishes from the Rhynchobatus australiae (69.63%), 55 fishes from Rhynchobatus laevis (28.80%), and 3 fishes from Rhynchobatus springeri (1.57%). Most of the wedgefish caught were immature fish with a size of 65-86 cmTL. The sex ratio of male and female fish was 1:2.41, showing unbalanced condition between males and females. CPUE aspect showed a fluctuating average value. The relation between the catch and effort was positive and significant with alinear equation of y = 0.6687x + 1.6338 with R2 = 0.9706 or r = 0.9852, meaning that increasing fishing effort was proportional to the possibility of a wedgefish being caught.
PERKEMBANGAN KONDISI SUMBERDAYA IKAN KARANG DAN EKOSISTEM TERUMBU KARANG DI PERAIRAN SUMATERA BARAT SEBAGAI DAMPAK PEMBENTUKAN KAWASAN KONSERVASI PERAIRAN TWP P. PIEH Rachmawati, Puput Fitri; Anggawangsa, Regi Fiji; Puspasari, Reny; Rachmawati`, Rita; Zulfikar, Andi
BAWAL Widya Riset Perikanan Tangkap Vol 13, No 2 (2021): (AGUSTUS) 2021
Publisher : Politeknik Kelautan dan Perikanan Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/bawal.13.2.2021.%p

Abstract

Pembentukan kawasan konservasi perairan (KKP) berkontribusi dalam pembangunan berkelanjutan untuk menjaga ekosistem, mengelola konflik dalam pemanfaatan sumberdaya, serta memfasilitasi pemanfaatan sumberdaya secara efektif. Adanya KKP memberikan kesempatan bagi ekosistem untuk pulih dan berkembang yang berujung dengan memberikan dampak yang positif untuk perbaikan kondisi ekosistem. Untuk mengetahui adanya dampak dari KKP terhadap kondisi sumberdaya ikan perlu dilakukan berbagai upaya pendekatan baik melalui kelimpahan, biomassa, maupun stok. Kemudian untuk mengetahui dampak KKP terhadap perkembangan ekosistem terumbu karang dilakukan pemetaan citra satelit untuk melihat perubahan dari waktu ke waktu serta perkembangan luasan tutupan terumbu karang. Kajian ini bertujuan untuk menganalisis perkembangan kondisi sumber daya ikan karang dan ekosistem terumbu karang di perairan Sumatera Barat sebagai dampak dari pembentukan KKP di TWP P. Pieh. Data yamg digunakan berupa data statistik perikanan serta data citra Landsat 05 (2009-2011) dan Landsat 08 (2014-2019). Perhitungan analisis profil dan analisis non-ekuilibrium model surplus produksi menggunakan alat bantu berupa SPSSTM, Notepad++TM, perangkat lunak ASPIC7TM, dan Kobe Plot I_II version 5TM. Analisis deteksi perubahan luasan terumbu karang menggunakan bantuan perangkat lunak Quantum GIS 3 dan R programming language (versi 4.0.2). Hasil analisis menunjukkan bahwa TWP P. Pieh belum secara maksimal berperan sebagai penyedia stok ikan karang yang dapat menyuplai kebutuhan biomassa ikan karang di perairan Sumatera Barat dan menyeimbangi tekanan penangkapan yang ada. Di sisi lain adanya pengelolaan TWP P. Pieh memberikan peningkatan terhadap kelimpahan dan biomassa ikan karang yang berbanding lurus dengan persentase luasan tutupan karang yang ada di dalam kawasan TWP P. Pieh. The establishment of marine conservation areas (MPA) contributes to sustainable development to maintain ecosystems, manage conflicts in using resources, and effectively facilitate using resources. The existence of MPAs provides an opportunity for ecosystems to recover and develop, which leads to a positive impact on improving ecosystem conditions. To determine the effects of MPA’s on fish resource conditions, various approaches need to be made, such as abundance, biomass, and stock. After that, satellite imagery mapping was carried out to find out the impact of the MPA on the development of coral reef ecosystems and the percentage of the coral cover area from time to time. This study aims to analyze the result of the condition of reef fish resources and coral reef ecosystems around the waters of West Sumatra due to the formation of the MPA in TWP P. Pieh. The data used are fishery statistics (1996-2019) and Landsat 05 (2009-2011), and Landsat 08 (2014-2019) image data. Calculation of profile analysis and non-equilibrium production surplus model using tools such as SPSS, Notepad++TM, ASPIC7TM software, and Kobe Plot I_II version 5TM. Study the detection of coral reef area changes using Quantum GIS 3 software and R programming language (version 4.0.2). The analysis results show that TWP P. Pieh has not optimally played a role as a provider of reef fish stocks that can supply the needs of reef fish biomass and balance the existing fishing pressure in the West Sumatra waters. However, TWP P. Pieh can be seen in the abundance and biomass of reef fishes ecosystems, which positively correlates with the percentage of coral cover area in TWP P. Pieh.
Pola Migrasi Zooplankton Berdasarkan Waktu dan Kedalaman di Perairan Kampung Bugis, Kota Tanjungpinang Kepulauan Riau Sisiliawati; Tri Apriadi; Andi Zulfikar
JURNAL ENGGANO Vol. 11 No. 1 (2026)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31186/jenggano.11.1.60-73

Abstract

Zooplankton merupakan mikroorganisme akuatik yang hidup melayang di kolom perairan, yang hanya bisa bergerak sedikit dan tidak bisa melawan arus. Pada umumnya zooplankton biasanya bermigrasi ke dasar perairan pada siang hari dan kembali ke permukaan pada malam hari. Penelitian ini bertujuan untuk mengetahui pola migrasi pada zooplankton Berdasarkan waktu dan kedalaman di Perairan Kampung Bugis, Kota Tanjungpinang Kepulauan Riau. Penelitian ini dilakukan pada Bulan Agustus-September 2023 di Perairan Kampung Bugis. Penelitian ini merupakan penelitian survei dengan pengambilan sampel menggunakan teknik purposive sampling pada 3 titik sampling dengan 3 kedalaman yaitu, dekat permukaan, tengah, dan dekat dasar. Sampel zooplankton diambil 2 minggu sekali dengan 3 kali pengulangan, sebanyak 108 botol pada 3 titik sampling berdasarkan tingkat kedalaman perairan dan waktu sampling. Pengukuran parameter fisika dan kimia dilakukan secara in situ di lapangan. Hasil dari penelitian ini didapatkan kelimpahan zooplankton berdasarkan stasiun hulu, tengah, dan hilir, pada saat siang hari zooplankton lebih banyak di dekat dasar, sedangkan saat malam hari kelimpahan lebih banyak di dekat permukaan. Berdasarkan hasil indeks zooplankton antar stasiun, indeks keanekaragaman berkategori sedang, indeks keseragaman berkategori tinggi, sedangkan indeks dominasi berkategori rendah. Hal ini menunjukkan bahwa Perairan Kampung Bugis masih stabil dengan tekanan lingkungan yang rendah dari indeks dominasi. Pola migrasi zooplankton berdasarkan waktu dan kedalaman, di waktu pagi hari berada di dekat dasar dan saat malam hari akan bergerak menuju ke dekat permukaan.
STRUKTUR KOMUNITAS MAKROZOOBENTOS SEBAGAI BIOINDIKATOR KUALITAS PERAIRAN ALIRAN SUNGAI RESUN, KABUPATEN LINGGA, KEPULAUAN RIAU Kurnianto, Alief; Purnama, Aji; Dhamanda, Fariz; Al Haddad, Fatmah; Melani, Winny Retna; Zulfikar, Andi; Amelia, Karla; Nugraha, Tito Aria; Anzani, Yunita Magrima; Apriadi, Tri
Biospecies Vol. 19 No. 2 (2026): Juli 2026
Publisher : Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/biospecies.v19i2.48997

Abstract

 The Resun River is located in North Lingga Village, Lingga Regency, Riau Islands. Besides being a tourist attraction, the Resun River is also used by local communities for anthropogenic activities such as bathing and washing. The presence of macrozoobenthos can serve as an indicator in assessing river water quality. This research was conducted from July to September 2023 with the aim of determining the structure of the macrozoobenthos community and water quality status based on the presence of macrozoobenthos in the Resun River, Lingga Regency. Sampling locations were determined using a purposive sampling method, taking into account land use conditions and anthropogenic activities, with three sampling stations. The data analysis used was in the form of macrozoobenthos community structure and Family Biotic Index (FBI). Macrozoobenthos found in the Resun River consisted of 5 families. The predominance of Elmidae at Station 1 and 2 suggests highly oxygenated and relatively undisturbed environmental conditions. Conversely, the increased abundance of Chironomidae at Station 3 indicates greater anthropogenic influence, reflecting spatial variation in disturbance levels within the Resun River ecosystem. Based on the Family Biotic Index analysis, the water quality of the Resun River ranged from excellent to good, with FBI values of 3.34 – 4.57, indicating slight degradation of the aquatic ecosystem. The Resun River generally demonstrated favorable ecological conditions. Nonetheless, anthropogenic pressures observed near Station 3 merit further investigation, as they may contribute to increased inputs of organic pollutants into the aquatic system.
The presence of harmful algae in the coastal waters of Bintan Island, Riau Islands Tri Apriadi; Winny Retna Melani; Andi Zulfikar; Deni Sabriyati; Wahyu Muzammil; Nuralim Pasisingi
Depik Vol 13, No 1 (2024): APRIL 2024
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.13.1.34135

Abstract

Environmental mitigation measures are being undertaken as a proactive approach to prevent the adverse consequences associated with Harmful Algal Blooms (HABs). Presently, there is a lack of comprehensive information regarding the occurrence of HABs in the waters surrounding Bintan Island, and routine monitoring to assess the potential for eutrophication is absent. This research should begin by gathering information about potential sources that contribute to the emergence of HABs, the specific types of algae with the capacity to trigger HABs The primary objective of this study is to identify the harmful algae species present in the coastal waters of Bintan Island. The research was conducted in August 2023, with the sampling process taking place at four specific locations within the coastal waters of Bintan Island. These sampling stations were selected deliberately to capture the varying activities predominant in each respective area. The microalgae found consisted of four groups, namely Bacillariophyta, Cyanophyta, Dinophyta, and Chlorophyta. Bacillariophyta is a group of microalgae with the highest abundance proportion at all observation stations. Harmfull Algae found in the coastal waters of Bintan Island generally come from the Dinophyta group of the types Ceratium sp., Peridinium sp., Prorocentrum sp., and Dinophysis sp. Harmful microalgae from the Dinophyta group were found at all research stations, with the highest proportion of abundance at Station 2 (6%) and the lowest at Station 3 (1%). The difference in these findings is thought to be due to the dynamics of the hydrosanographic parameters of the waters, especially nutrient concentrations.Keywords:BintanCeratiumDinophytaHarmfulMicroalgae
Carbon Storage in Seagrass in The East and North Coastal Waters of Bintan Island Syahbana Advani Alsha; Andi Zulfikar; Winny Retna Melani
Journal of Marine and Coastal Science Vol. 15 No. 1 (2026): FEBRUARY
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmcs.v15i1.75590

Abstract

Seagrass has the ability to store carbon by utilizing CO2 to be used as a photosynthesis component which has the potential as blue carbon. This research was aimed to determine density, and biomass in the East and North Coastal Waters of Bintan Island; determine the carbon storage contained in seagrass in the East and North Coastal Waters of Bintan Island; and determine the relationship between density, biomass, and carbon storage in seagrasses in the East and North Coastal Waters of Bintan Island. The research was conducted in Teluk Bakau, Malang Rapat, Berakit, and Pengudang from August 2024 to May 2025. The tools and materials used were 50 × 50 cm2, oven, muffle furnace, shieve net, underwater camera, plastic bag, seagrass samples, and substrate samples. The research procedures was used systematic random sampling method and the sampling design used in determining sampling points was a nested hierarchical design. The method of calculating the value of carbon storage in seagrasses used the Walkley and Black method. The data analysis was carried out by calculating the value of density, biomass; then calculating the value of carbon storage in seagrasses, and testing the relationship between density, biomass, and carbon storage in seagrasses. Density in the eastern region ranged from 284-577 shoot/m2 and in the northern region ranged from 107-816 shoot/m2. Biomass in the eastern region ranged from 39,31-82,99 gr/m2 and in the northern region ranged from 19,39-138,55 gr/m2. Carbon storage in the eastern region ranged from 27,46-31,03% and in the northern region ranged from 23,93-28,30%. The results of the correlation test show that density has a moderate relationship and is directly proportional to biomass with a correlation value of 0.51; density has a very weak relationship and is inversely proportional to carbon storage with a value of -0.09; and biomass has a weak relationship and is inversely proportional to carbon storage with a value of -0.24.
Estimation of Nitrogen (N) Storage in Seagrass in The East and North Coastal Waters of Bintan Island Ismi Dwi Yulianti; Andi Zulfikar; Winny Retna Melani
Journal of Marine and Coastal Science Vol. 15 No. 1 (2026): FEBRUARY
Publisher : Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jmcs.v15i1.75591

Abstract

Seagrass has high primary productivity and is highly dependent on the availability of nitrogen as the main nutrient that supports growth, photosynthesis, and biomass, including in the waters of Bintan, Indonesia. This research was conducted to determine the density, biomass, and nitrogen content of seagrass, as well as the influence of density and biomass on nitrogen storage to support sustainable conservation management in the Eastern and Northern regions of Bintan Island. The research was conducted from August 2024 to May 2025 by taking seagrass samples using the nested hierarchical design method based on systematic random sampling. Nitrogen measurements are carried out using the Kjeldahl method which converts organic nitrogen into ammonium sulfate. Based on this research, the highest density (816.1 stands/m2) and biomass (138.56 g/m2) of seagrass were in Pengudang. The lowest density and biomass were in Berakit_2 with values of 106.8 stands/m2 and 19.03 g/m2, respectively. The highest nitrogen (0.758%) was found in 2 locations, namely Pengudang and Teluk Bakau_2, while the lowest nitrogen (0.359%) was in Berakit_1. Based on regression analysis, the density and biomass of seagrass had a significant effect on nitrogen storage with a regression value of 0.642.
Potensi dan Kelayakan Sistem Pemanenan Air Hujan sebagai Sumber Air Bersih Alternatif pada Wilayah Kepulauan (Studi Kasus: Kota Tanjungpinang) Desryati; Febrianti Lestari; Diana Azizah; Andi Zulfikar; Yeggi Darnas
Jurnal Serambi Engineering Vol. 11 No. 3 (2026): Juli 2026
Publisher : Faculty of Engineering, Universitas Serambi Mekkah

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Telah dilakukan penelitian tentang potensi dan kelayakan sistem pemanenan air hujan sebagai sumber air bersih alternatif pada wilayah kepulauan dengan studi kasus kota tanjungpinang. Penelitian bertujuan menganalisis kelayakan sistem Pemanenan Air Hujan sebagai alternatif penyediaan air bersih dari aspek teknis dan sosial. Penelitian menggunakan pendekatan mix methods didominasi kuantitatif, mencakup analisis data curah hujan 10 tahun (2015-2024) dari Badan Meteorologi Klimatologi dan Geofisika, data luas atap bangunan dari citra satelit Open Street Map 2024, analisis kualitas air hujan berdasarkan 13 parameter sesuai Permenkes No. 2 Tahun 2023 dan penurunan air larian. Pendekatan skala Likert dan statistik deskriptif diterapkan untuk memahami persepsi dan partisipasi masyarakat serta tantangan dan hambatan melalui wawancara. Hasil menunjukkan potensi pemanenan air hujan mencapai 2.308.815 m³/bulan dari total luas atap 11.384.277 m². Atap 70 m² mampu memenuhi kebutuhan domestik 600 liter/hari sepanjang tahun. Air hujan murni memenuhi baku mutu, namun tangkapan atap terindikasi terkontaminasi bakteri E. coli dan Total Coliform serta mengandung timbal 1 mg/L. Korelasi positif yang moderat (r = 0,561; p < 0,0001) antara persepsi dan partisipasi masyarakat dengan hambatan utama kendala biaya dan kurangnya bantuan teknis, faktor pendukung berupa kesediaan masyarakat mengikuti pelatihan atau kampanye. Pemanenan air hujan dinilai layak dikembangkan sebagai sumber air alternatif dengan pengolahan memadai sebelum pemanfaatan.
Sebaran Spasial Fitoplankton Dan Hubungannya Dengan Parameter Lingkungan Perairan Pesisir Utara Kota Tanjungpinang Aji Purnama; Tri Apriadi; Andi Zulfikar; Ahmad Zahid
Jurnal Kelautan Vol 19, No 2: Agustus (2026)
Publisher : Department of Marine Sciences, Trunojoyo University of Madura, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/jk.v19i2.31065

Abstract

ABSTRAKPerairan pesisir utara Kota Tanjungpinang berupa estuari yang meliputi daerah Sebauk, Kampung Madong, Sei Nyirih, dan Air Raja. Keberadaan fitoplankton di perairan estuari dapat menjadi gambaran produktivitas primer yang dapat menunjang produksi perikanan. Riset yang dilakukan pada Juli 2024 dan Januari 2025 ini bertujuan untuk mengetahui kelimpahan dan sebaran spasial fitoplankton serta hubungan parameter lingkungan terhadap kelimpahan fitoplankton di perairan pesisir utara Kota Tanjungpinang. Pengambilan sampel fitoplankton dan air untuk analisis nutrien serta pengukuran beberapa parameter lingkungan dilakukan di 30 titik sampling yang ditentukan secara acak sistematis. Kelimpahan fitoplankton pada Januari 2005 lebih tinggi dari Juli 2024. Sebaran spasial fitoplankton pada bulan Juli 2024 dan Januari 2025 menunjukkan pola yang serupa yaitu kelimpahan tinggi di area tengah perairan (Kampung Madong dan Sei Nyirih), dan kelimpahan yang rendah bagian timur (Air Raja) dan barat (Sebauk). Hal ini juga sejalan dengan sebaran spasial konsentrasi nutrien nitrat dan fosfat. Konsentrasi nitrat dan fosfat menunjukkan hubungan positif dan signifikan dengan kelimpahan fitoplankton pada kedua periode pengamatan. Temuan ini menyoroti peran penting ketersediaan nutrien dalam mengatur dinamika fitoplankton di wilayah studi.Kata kunci : Chaetoceros, fitoplankton, fosfat, nitrat, sebaran spasialABSTRACTThe northern coastal waters of Tanjungpinang City comprise estuarine ecosystems encompassing Sebauk, Kampung Madong, Sei Nyirih, and Air Raja. Phytoplankton communities in estuarine waters are widely recognized as indicators of primary productivity and play a crucial role in supporting fisheries resources. This study was conducted in July 2024 and January 2025 to assess phytoplankton abundance, evaluate the relationships between environmental parameters and phytoplankton abundance, and examine the spatial distribution of phytoplankton in the northern coastal waters of Tanjungpinang. Phytoplankton and water samples for nutrient analyses, together with in situ measurements of environmental parameters, were collected from 30 sampling stations established using a systematic random sampling approach. Phytoplankton abundance was higher in January 2025 than in July 2024. Spatial analysis revealed a consistent distribution pattern during both sampling periods, with the highest phytoplankton abundance occurring in the central waters (Kampung Madong and Sei Nyirih) and lower abundance in the eastern (Air Raja) and western (Sebauk) areas. This spatial pattern corresponded closely with the distribution of nitrate and phosphate concentrations. Furthermore, nitrate and phosphate concentrations were positively and significantly correlated with phytoplankton abundance during both observation periods, highlighting the important role of nutrient availability in regulating phytoplankton dynamics in the study area.Keywords : Chaetoceros, nitrate, phosphate, phytoplankton, spatial distribution
Co-Authors Aditya Hikmat Nugraha Adrianto , Luky Agrianti, Renny Ahmad Zahid Aji Purnama Al Haddad, Fatmah Amelia, Karla Amrullah Usemahu Andrinal Andrinal Anggawangsa, Regi Fiji Ani Suryanti Apdillah, Doni Ariston, Muhamad Arta, Fatimah The Last Azzahra Maulidina Beale, Calvin S. Booth, Hollie Chandra Joei Koenawan Desryati Dewi Haryanti Dhamanda, Fariz Diana Azizah Dietriech Geoffrey Bengen Dony Apdillah Efrina Yanti Esty Kurniawati Faisal, La Ode M Febrianti Lestari Ferawati Runtuboi Fery Kurniawan FERY KURNIAWAN Ginting, Rio Junaydi Hanifah, Putri Nur Haryati, R. Nina Hermansyah, Rizky Fajar Hollie Booth I Wayan Nurjaya Irfan Yulianto Ismi Dwi Yulianti Karto Wongsopatty Khodijah Ismail Khodijah Khodijah Kurnianto, Alief Kurniawan, Rika Kusuma, Okky Rizal Laode M Faisal Leni Agustina Lestari, Putri Agil Lily Viruly Luky Adrianto Luthvi Nurwulandari mala kurnia Manik, Grace Rika Mennofatria Boer Muhammad Ichsan Mukhlis Mukhlis Munawar Munawar Muzahar Nancy Willian Nanda, Tri Nofrizal Nofrizal Noviyati, Syamsinar Nugraha, Tito Aria Nuralim Pasisingi Nurhidayah Rahmah Nyoman M N Natih Okky Rizal Kusuma Oktavialy, Feby Purnama, Aji Rachmawati, Puput Fitri Rachmawati`, Rita Rahima Zakia Renny Agrianty Reny Puspasari Reny Puspasari, Reny Rio Junaydi Ginting Ritha, Nola Rosnah, Rosnah Sabriyati, Deni Saputri, Anggun SAPUTRI, ANGGUN Septian Anugrah Sisiliawati Susanto, Handoko Adi Sutran Sutran Sutran, Sutran Syahbana Advani Alsha Taryono, Taryono Thamrin Thamrin Tri Apriadi Tri Apriadi Wahyu Muzammil Winny Retna Melani Winny Retna Melani Winny Retna Melani Yeggi Darnas Yunita Magrima Anzani Yusni Ikhwan Siregar Zairion Zen, Linda Waty Zulhamsyah Imran