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All Journal Jurnal Teknologi Perikanan dan Kelautan Marine Fisheries: Jurnal Teknologi dan Manajemen Perikanan Laut AQUATIC SCIENCE & MANAGEMENT ILMU KELAUTAN: Indonesian Journal of Marine Sciences AL KAUNIYAH Jurnal Biologi Tropis Albacore : Jurnal Penelitian Perikanan Laut Jurnal Pengabdian UNDIKMA Jurnal Pijar MIPA Jurnal Perikanan
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Politeknik Kelautan Dan Perikanan Jembrana
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Journal : Jurnal Pijar MIPA

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Abundance and diversity of phytoplankton at sekotong bay waters Western Lombok Lalu Japa; Noar Muda Satyawan; Rizky Regina Kawirian
Jurnal Pijar Mipa Vol. 16 No. 5 (2021): November 2021
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (535.945 KB) | DOI: 10.29303/jpm.v16i5.1702

Abstract

Phytoplankton is one of the important components in aquatic ecosystems. This organism plays an important role as a primary producer to support the life of the tropics above it. The purposes of this study were to reveal the abundance and diversity of phytoplankton species in the waters of Sekotong Bay, West Lombok. Sampling were conducted in July 2018 at 8 stations using plankton net and then observed at the Laboratory. The results of the abundance calculations show a varied pattern at each observation station. The highest abundance was found at station 8 (9,060 ind/L) followed by station 6 (8,300 ind/L), station 7 (6,490 ind/L), station 4 (4,440 ind/L), station 3 (3,980 ind/L) , station 5 (2,820 ind/L), station 2 (2,460 ind/L) and station 1 (2,440 ind/L). The Shannon - Wiener Species diversity Index also shows diverse patterns at each station. Station 7 has the highest diversity index value (H′ = 3.55), followed by station 6 (H′ = 3.46), station 8 (H′ = 3.18), station 1 (H′ = 2.72) , station 2 (H′ = 2.69), station 5 (H′ = 2.67), station 4 (H′ = 2.33) and station 3 (H′ = 2.26). Species dominance index at all stations at low category with the highest dominance found at station 3 (D = 0.19), followed by station 4 (D = 0.18), station 2 (D = 0.09), station 5 (D = 0, 09), station 1 (D = 0.08), station 8 (D = 0.06), station 6 (D = 0.05) and station 7 (D = 0.04). Species Evennes index (E) values ranged from 0.71 to 0.88, indicating that the number of individual species was relatively the same and the ecosystem was in relatively good condition. The analysis showed that the spatial pattern of abundance and diversity of phytoplankton species in Sekotong Bay was related to the distance from the estuary.
Community Structure, Abundance and Ecological Index of Phytoplankton in Jembrana Coastal Waters, Bali Satyawan, Noar Muda; Rakhma Fitria Larasati; Made Mahendra Jaya; Iya Purnama Sari; Yulia Estmirar Tanjov; Muh. Arkam Azis
Jurnal Pijar Mipa Vol. 19 No. 5 (2024): September 2024
Publisher : Department of Mathematics and Science Education, Faculty of Teacher Training and Education, University of Mataram. Jurnal Pijar MIPA colaborates with Perkumpulan Pendidik IPA Indonesia Wilayah Nusa Tenggara Barat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpm.v19i5.7523

Abstract

Phytoplankton is an important component in aquatic ecosystems. Apart from producing oxygen, phytoplankton also act as primary producers in the food chain. Bali Sardinella (Lemuru) is an important fishery commodity in the Bali Strait, which is known to eat plankton (Plankton Feeder), so its existence depends on the distribution of plankton. This descriptive research aims to determine the community structure, abundance and ecological index of phytoplankton in the coastal waters of Jembrana Regency. Sampling was conducted in July 2023 at five observation stations in the coastal waters of Jembrana Regency (Pengambengan Beach, Perancak Beach and Delod Berawah Beach). Around 250 litres of seawater was filtered by a plankton net measuring 35 mm. The filtered samples collected in a 100 ml collecting bottle were then transferred to a 120 ml sample bottle and preserved in 4% formalin. The samples obtained were taken to the laboratory for observation under a microscope. This research shows that 66 types of phytoplankton were found to belong to 5 classes in the waters of Jembrana, Bali. The Bacillariophyceae class were found with the highest number of species (44 species), followed by the Dinophyceae (19 species), Chlorophyceae (1 species), Cryptophyceae (1 species), and Cyanophyceae (1 species). Based on the results of calculating phytoplankton abundance, various abundance values ​​were obtained at each observation station. Station 2 has the highest abundance of phytoplankton with 297 individuals/l followed by Station 1 (221 individuals/l), Station 4 (130 individuals/l), Station 3 (127 individuals/l), and Station 5 (36 individuals/l). The species Diversity Index (H') ranges from 2.61 - 2.83, the Dominance Index (C) ranges from 0.07 - 0.13, and the Evenness Index (e) ranges from 0.72 - 0.95. The ecological index value shows that the phytoplankton community in Jembrana coastal waters included in the moderate diversity category is not dominant and evenly distributed. The ecological index value shows that the water quality is categorized as moderately polluted.
Co-Authors Aditya Bramana Aditya Bramana, Aditya AGUS PURWANTO Agus Purwanto Ario Anggara Mukti Azis, Muh. Arkam Aziz, Muh. Arkam Bhagaskara, I Nyoman Sujiwo Ganang Dwi Prasetyo Gito Hadiprayitno I Nyoman Sujiwo Bhagaskara Iya Purnama Sari Lalu Japa Larasati, Rakhma Fitria Liya Tri Khikmawati, Liya Tri M. Irsyad A. Ghafari M. Liwa Ilhamdi Made Mahendra Jaya MAINNAH, MUTH Makoto Tsuchiya Muh. Arkam Azis Muh. Arkam Azis Muh. Arkam Azis Muh. Arkam Aziz Muth Mainnah Noveldesra Suhery NOVITA TRI ARTININGRUM Novita Tri Atriningrum Perdana Putra Kelana Prayitno, Muhamad Riyono Edi Rahmat Kurnia Rizky Regina Kawirian Sarasati, Wulandari Shelly Tutupoho Suratna Suratna Suratna, Suratna Tanjov, Yulia Estmirar Tiku, Mathius Triyono, Heri Wulandari Sarasati Yusli Wardiatno