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Journal : Makara Journal of Science

The Influence of Nutrient (N and P) Enrichment and Ratios on Phytoplankton Abundance in Keunekai Waters, WehIsland, Indonesia Wisha, Ulung Jantama; Ondara, Koko; Ilham, Ilham
Makara Journal of Science
Publisher : UI Scholars Hub

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Abstract

The Keunekai waters around Weh Island, Indonesia, have become a prone coastal area because of degradation from climate anomalies and anthropogenic pressure. The high level of coral mortality caused by mass bleaching and fish bombing several years ago may have led to the deterioration of the water conditions and the disruption of the biogeo-chemical cycle, resulting in potential nutrient enrichment and algae blooms (eutrophication). This study aimed to de-termine the influence of nutrient ratios on phytoplankton abundance and monitor the existing waterconditions aroundKeunekai. Spectrophotometry analysis was used to determine the concentrations of the nutrients, and the Sedgewick-Rafter counting method was used to identify the species and abundance of the phytoplankton. A large variation in N content (ranging from 1.1 to 1.6 mg N/L) and, particularly, P content (ranging from 0.02 to 0.18 mg P/L) most likely reflected differences in the supply ratios of N and P, rather than differences in absolute N and P availability. Three taxa of phytoplankton and their relative abundance were identified in the study area: Bacillariophyceae (diatom) (72%), Cyanophyceae (3%), and Dinoflagellate (25%). It was found that P-limitation mostly controls potential algae blooms, which support the density of Dinoflagellates thatmay endanger the water.
Co-Authors A. Ratna Sari Abdussahid Abdussahid Ahmad Syarief Iskandar, Ahmad Syarief alek oktadinata Ali Mardius Amrullah, La Ode Andini Tria Alfiazh Andri Muhammad Kholiq Angkasa Putra Annisa Annisa Ardhiya Rachmala Zedi Arif Jaya Pamana Arin Febriani Putri Arman Pariakan ARNO, ABDUL KADIR Arrahman, Rudi Ary Suud Cahyo Alben Asni Asni Asriadi, Nur Muhammad Asy Syafa’ Yumna Atika, Nur Bahtiar Bahtiar Bayu Adi Nugraha Bayu Herizal Bintal Amin David Iqroni Den Ka, Veronika Sari Depi Prayogi DEWI ANGGRAINI Dewi Samrotul Fu’adah Dewi Sartika Dian Puteri Nurbaity Djauhari Djauhari Dody Priosambodo Dwitya Citta P Ery Iswary Ery Safrianti Febry Ramadiansyah Fina Diana Firman - Saleh Fredinan Yulianda Gilang Saputra Ramadhan Guspianto Guspianto Habiburrahman Habiburrahman, Habiburrahman Hardiansyah Hardiansyah Hardianti Hasyim Hayana Hayana Heri Bahtiar Hijril Ismail, Hijril Humaira Humaira Ilpi Zukdi Indasari, Andi Nur Irwan Hadi Irwandi Irwandi ISHAK KADIR Ismail Ismail Isna Nur Isnayanti Jaka Surya Suwandi Jisal, Muh. Joko Samiaji Khairi, Sabiah Khoirul Mufti Ali Koko Ondara, Koko M. Kotta, Husni Magdalena Litaay Merlin Apriliyanti Meyka Aris Yusron Misroh Mulianingsih Moch., Assiddieq Monica Novela Muh. Husni Kota Muhammad Adam Nugraha Muhammad Afif Muhammad Ali Muhammad Rafli Firmansyah Mulianingsih, Misroh Murbayani Murbayani Mus, Akhmad H. Nanda Pratiwi Ba’arsyah Nasaruddin Nasaruddin Nasrul Nasrul Ndibale, Wa Neno Yurmina Tanjung Nugi Abdul Chalid Nur Julianti Dwi Chairani Nurdiniawati Nurdiniawati Nurhayati Nurhayati Nurhayati Nurhayati Nurmiati Irvan Nurmiati Nurmiati Paramita, Mahardian Hersanti Pebrianti, Henny Purnama, Iksan Raden Dini Destiani Siti Fatimah Rahim Rahim Ridwan Ridwan Rima Rahmaniah Risris Rusyana Priatna Rizky Febriani S Sumarlin Sabani, Akbar Safitri Juanita Salmiah Salmiah Samsuardi Samsuardi Sani, Muhammad Halim Sekaryadi, Yudi Sri Nirmala Sari Subhan Mulyana Sucipto Sucipto Suharyadi Suharyadi Supratman Supratman, Supratman Suryono Suryono Susilawati, Susilawati Suwardi Suwardi Syahrul R, Syahrul Syarifuddin Syarifuddin Tavi Supriana Ulfiana, Ulfiana Ulung Jantama Wisha Umaeydah Umaeydah Ummi Kalsum Uswatun Khasanah Wirayanti Utami, Kusniyati Veronika Sari Den Ka Vience Tebay Wawan Junreti Daya Willem Moka Winda Nurmayani M Winda Sari wirayanti, uswatun khasanah Yohana Dhoe Wake Yushinta Fujaya Yusnita Rahayu Zuliardi Zuliardi