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Journal : HAYATI Journal of Biosciences

The Effect of Tides on Plankton Communities in the Belawan River Estuary, North Sumatra Leidonald, Rusdi; Muhtadi, Ahmad; Harahap, Cici Maulidiah; Mukra, Rizal; Ishak, Mohd Yusoff; Hasani, Qadar
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.114-128

Abstract

The Belawan Estuary is a highly important economic and logistics hub in Sumatra, serving as the primary maritime transportation route in western Indonesia. This estuary is also utilized for multiple purposes, including industrial activity, residential areas, and fisheries. These activities inevitably influence water quality, which in turn affects the presence and population dynamics of plankton in the estuary. This study aimed to examine the spatial and temporal distribution of plankton communities in the Belawan Estuary. Observation points were selected from eight locations representing different activities and regions, including areas near the sea, the middle section, and areas close to land. Plankton samples were collected during high and low tides following the tidal cycle (new moon, first quarter, full moon, and last quarter). Principal component analysis was performed to determine the influence of tidal cycles on plankton composition and abundance in the estuary. A total of 64 plankton genera from 16 classes were identified in the estuary. spatially, the highest abundance was recorded in the mouth estuary during low tide. Temporally, the highest plankton abundance across stations was during the first quarter phase at low tide. These findings indicate that tidal cycles significantly influence plankton abundance in the Belawan Estuary. This phenomenon is attributed to the tidal currents that transport nutrients from the lower layers to the surface waters during both high and low tides. Changes in plankton abundance and species composition can serve as indicators of water fertility in this region and reflect the impacts of changes in environmental conditions.
Co-Authors AA Sudharmawan, AA Adelia, Riska Adha Putra, Chairunas Agnes, Jistisya Maria Ahmad Muhtadi Aina Azzahra Amanda, Priska Amrizal Amrizal Angel Maria Yosephine Anugerah, Randy Anwar, Syakila Aritonang, Margareth Shanastasha Aritonang, Nathasya Inneke Asmida, Lisa Ayu Wulandari Bangun, Dewi Ribreka Br Barik, Ahsanul Baringbing, Siska Juliana Barus, Dea Natalia Bella Junniar, Amanda Camara, Jun S. Chairunas Adha Putra Chairunas Adha Putra Dalimunthe, Aina Mardiah Dicky Ray’za Sianturi Dionesa Sitanggang, Joyce Basana Elisabet, Melfa Romanna Eri Yusni Falahani, Falahani Fatmawati, Ade Fauziah Fauziah Fazira, Hafizha Gaol, Lumban Gilang Pradana Gilang Pradana , Tengku Giovani, Amanda Gultom, Dita Zahara Gultom, Wirda Resinta Gultom, Yosa Martini Hafifa, Fanny Harahap, Aline Gustri Yolanda Harahap, Cici Maulidiah Hariyadi, Itra Hartono, Adi Hasibuan, Nitya Ilmi Hasruddin Hijriyanti, Putri Husna, Raudhatul Husni, Rafeah Ipanna Enggar Susetya, Ipanna Enggar Ishak, Mohd Yusoff Ivo Elsa Samaria Hutabarat Khalisyah, Zhafira Klarindha, Winda Kudadiri, Wahyuni Sada Arihta Lingga, Nur Anelia Lubis, Rizka Lumbangaol, Sriyanti Manalu, Rosa Rini Kezia Manurung, Dhea Amelia Mira Rangkuti, Sailana Muammar Muammar, Muammar Muhammad Fadhli Muhammad Yusuf Muhammad Yusuf Muhammad Yusuf Nasution Munthe, Gabriella Mustaqim Mustaqim Mustaqim Mustaqim, Mustaqim Mustasfa, Sinta Wulida Mutia, Diska Qolbu Nahdah, Hadyan Wafi Nazmyra Siregar, Nayla Nazwari, Aura Nisa Holida Siagian Nuzalifa, Yosie Ulfa Oktavia, Dhea Pandiangan, Christin Magdalena Pandiangan, Pinta Grace Pangaribuan, Selfiana Panggabean, Nurul Hikmah Pasaribu, Cynthya Elizabet Pasaribu, Fadilah Pasaribu, Khairina Hafiza Permata, Bintang Rizki Pradana, Gilang Pratiwi, Adinda Rizky Pristy, Annisa Puan Adila Putri, Allysha Dinda Putri, Dwi Fadhillah Putri, Wila Nurlisa Qadar Hasani Rabiah Afifah Daulay Rahima, Tazkia Khansa Putri Rangkuty, Sailana Mira Ratno, Suyit Rini Hafzari Ritonga, Viony Azzahra Rudi Munzirwan Siregar, Rudi Munzirwan Rusdi Leidonald Ruth Cessaminar Gultom Sabrina Pasaribu, Annisa Sagala, Nur’aini Sailana Mira Rangkuty Samosir, Ayu Triputri Samosir, Newche Rolima Sangkuti, Dinda Saragih, Azra Nabila Saragih, Putri Fransiska Sari, Vio Joana Sarip, Najwa Sasmita Br Sianturi, Amelia Satipa, Oriza Sembiring, Christine Natalia Br Sembiring, Safira Salsabilla Ayudia Balqis Septiani, Findi Servina Indah Yani Br Tarigan Sesil Audia Br Sibarani Shafwan S. Pulungan, Ahmad Shinta, Dwi Sianturi , Stephanie Agustin Sianturi, Betaria Sonata Siburian, Sri Yuliani Rezeki Sihombing, Nurhanifah Br. Silaban, Friends Silaban, Pita Valentina Silalahi, Maria Handayani Simanjuntak, Debora Simaremare, Inda Vandiwinata Simorangkir, Marco Antonio Sinaga, Aulia Sinaga, Gunis Enzlen Sinaga, Putri Wanna Oktavia Sinambela, Sarianto Siregar, Alya Anugrah Siregar, Halimatussyakdiah Siregar, Rara Afifah Sitanggang , Robella Sulastri Siti Aisyah Sitohang, Mohonia Sabarito Sitompul, Naila Zahwa Sitorus , Nurdayanti Sitorus, Herman Aldona P. Suci Rahmawati, Suci Sueng, Yuliani Syah, Putri Aulia Syahra, Assyfa Tampubolon, Qori Afifah Tarigan, Adelia Br. Tarigan, Osmondo Jorey Pratama Tarigan, Risalina Septiani Br Tri Amanda Siregar Tri Harsono Turrahmah, Fadilla Ulina Silalahi, Dewi Ratna Sari Varanth, Sree Viknes Widia Ningsih Widia Ningsih WIDYA ANDAYANI Widya Andayani Widya Arwita wulandari, atika Wuriyani, Elly Prishasti Zain, Ulfi Khairani