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Community Structure of Zooplankton in the waters of Kampung Ambong Likupang, North Minahasa Rizki Antuke; Gaspar D. Manu; Rose O. S. E. Mantiri; Fransine B. Manginsela; Adnan S. Wantasen; Deiske A. Sumilat
Jurnal Ilmiah PLATAX Vol. 8 No. 2 (2020): ISSUE JULY-DECEMBER 2020
Publisher : Sam Ratulangi University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35800/jip.8.2.2020.31629

Abstract

Zooplankton has an important role as a linking chain between primary producers and biota at higher trophic levels. This organism is a component in the food chain that has a dual role as both the first consumer and the second consumer. They are intermediaries between plankton and nekton groups. This research was conducted at the field station of Fisheries and Marine Sciences Faculty of Sam Ratulangi University, which is located in Kampung Ambong, Likupang, North Minahasa Regency, to identify the species and to determine the structure of the Zooplankton community through: Density, Relative Density, Diversity (H '), Dominance (e ), and Uniformity (C). Based on the results of species identification, 20 species from 15 genera in 3 classes were obtained, namely Hexanauplia (13 genus 18 species), Crustacea (1 genus 1 species), and Malacostraca (1 genus 1 species). The results of the community structure analysis obtained moderate uniformity values at points 1, 2, and 3. The dominance index shows low values at all three points, where point 2 C = 0.17 and at points 1 and 3 C = 0.20 This means that there is no types of plankton that dominate the area. Temperature 28 ° C, Salinity 300/00, and pH = 7 indicate conditions that are still in a good range as a place to live and grow Zooplankton.Keywords: Zooplankton; Diversity; Community Structure; LikupangAbstrakZooplankton mempunyai peran penting sebagai rantai penghubung produser primer dengan biota pada tingkat trofik yang lebih tinggi, juga merupakan salah satu komponen dalam rantai makanan yang berperan ganda baik sebagai konsumen tingkat pertama maupun konsumen tingkat ke dua, selanjutnya merupakan penghubung antara plankton dan nekton. Penelitian ini dilakukan di Laboratorium Basah Fakultas Perikanan dan Ilmu Kelautan Universitas Sam Ratulangi, Kampung Ambong, Likupang, Kabupaten Minahasa Utara, untuk mengetahui jenis dan struktur komunitas Zooplankton melalui: Kepadatan, Kepadatan Relatif, Keanekaragaman (H’), Dominansi (e), dan Keseragaman (C). Berdasarkan hasil Identifikasi jenis, diperoleh 20 spesies dari 15 genus dalam 3 klas, yaitu Hexanauplia (13 genus 18 spesies), Crustacea (1 genus 1 spesies), dan Malacostraca (1 genus 1 spesies).  Hasil analisis struktur komunitas diperoleh nilai keseragaman yang sedang pada titik 1, 2, dan 3. Indeks Dominansi menunjukkan nilai yang rendah  pada ketiga titik, dimana titik 2  C = 0,17 dan pada titik 1 dan 3 C = 0,20  Artinya tidak terdapat jenis plankton yang mendominsi daerah tersebut. Suhu 28°C, Salinitas 300/00, dan pH= 7  menunjukkan kondisi yang masih dalam kisaran baik sebagai tempat hidup dan bertumbuhnya Zooplankton.Kata kunci: Zooplankton; Keanekaragaman; Struktur Komunitas; Likupang
Mapping Plankton Community Structure in North Sulawesi Waters Using Ecological Diversity Indices as Indicators of Marine Ecosystem Health Rose O.S.E. Mantiri; Deiske A. Sumilat; Suzanne L. Undap; Rowen Bonaventura; Haryati Rabuka; Tesalonika S. Koloay
Jurnal Penelitian Pendidikan IPA Vol 12 No 2 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i2.14387

Abstract

Plankton communities play a crucial role in marine ecosystems and are widely used as bioindicators of environmental quality. This study aimed to map plankton community structure in several coastal waters of North Sulawesi and evaluate their potential as indicators of marine ecosystem health. Plankton samples were collected from Bunaken, Lembeh Strait, Amurang, Belang, and Likupang using standard plankton net tows. Community structure was analyzed using species composition, abundance, Shannon–Wiener diversity index (H′), evenness (E), and dominance (D). The results showed clear spatial variation in plankton community structure among study sites. Higher diversity values were recorded in Bunaken (H′ = 2.78; E = 0.81; D = 0.18) and Lembeh Strait (H′ = 2.65; E = 0.79; D = 0.21), indicating relatively stable marine conditions. In contrast, Likupang exhibited lower diversity and higher dominance (H′ = 1.43; E = 0.52; D = 0.39), suggesting greater environmental stress. These patterns demonstrate that plankton community indices are sensitive indicators of ecosystem condition in tropical coastal waters. The findings also highlight the potential use of plankton ecological data as contextual learning resources in science education, particularly for teaching marine ecosystem dynamics, biodiversity, and environmental monitoring using real environmental datasets from local coastal ecosystems