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Abundance and Diversity of Plankton as Bioindicators of Coastal Paddy-Field Water Quality in Batang Regency, Indonesia Handriatni, Ari; Ariadi, Heri; Al Ramadhani, Farchan Mushaf; Badrudin, Ubad; Jazilah, Syakiroh; Amin, Rohmatul; Faza, M. Akmal; Ma'Arif, Samsul; Pradana, Candra Dwi; Hadiprasetya, Anandya
Jurnal Penelitian Pendidikan IPA Vol 11 No 12 (2025): December
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i12.12550

Abstract

This investigation evaluated spatial and temporal variations in plankton abundance and community structure to determine their effectiveness as bioindicators of water quality in coastal rice-field ecosystems of Batang Regency, Central Java. Plankton samples were collected from five sampling stations using 80 mL film vials and subsequently identified through laboratory-based taxonomic analysis. Key physicochemical factors were measured ex situ, and the analyses evaluated plankton abundance, Shannon–Wiener diversity index (H’), evenness (e), dominance (C), and saprobic index. Results demonstrated relatively low plankton abundance, with Bacillariophyceae (40%), particularly Chaetoceros sp., representing the principal taxonomic group, followed by Chlorella sp. Moderate diversity levels (H’ = 1.45–2.85), high evenness (e > 0.6), and low dominance (C < 0.5) indicated a community structure with stable ecological dynamics. Most water quality parameters conformed to Indonesian water-quality criteria, characterized by a salinity of 0.5 g/L, temperatures of 23–24 °C, and dissolved-oxygen concentrations above 4.0 mg/L. However, the saprobic index revealed light to moderate pollution at stations near settlements and downstream river segments, likely influenced by domestic wastewater, agricultural runoff, and seawater intrusion. Overall, the ecosystem remained supportive of primary productivity, emphasizing the significance of plankton as sensitive indicators for monitoring coastal agricultural environments
Edukasi Budidaya Hidroponik Kepada Siswa SMK Diponegoro Kabupaten Pekalongan Sebagai Solusi Mengatasi Keterbatasan Lahan Afiatan, Arbina Satria; Al Ramadhani, Farchan Mushaf; Mufid, Ahsarul; Handriatni, Ari; Badrudin, Ubad; Jazilah, Syakiroh; Alfarisy, Fariz Kustiawan; Wagiyana, Wagiyana; Cahyanita, Elvin; Ali Mudhor, Muhammad; Zahrah, Ninda Alza Nur
Rahmah : Jurnal Pengabdian Masyarakat Vol. 1 No. 3 (2025): Rahmah : Jurnal Pengabdian Masyarakat
Publisher : Jaanur ElBarik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65065/wt2np309

Abstract

This community service activity aims to increase students' knowledge and interest in hydroponic cultivation as a solution to overcome land limitations. The community service activity was carried out at Diponegoro Vocational School. The implementation method consists of four stages: investigation, preparation, action, and reflection with educational materials, practice, and evaluation through pre-tests and post-tests. The results of the activity showed a significant increase in aspects of basic hydroponic knowledge, types of hydroponic systems, and hydroponic market opportunities, as indicated by changes in the percentage of students who understood the material before and after the activity. In addition, the level of student interest in hydroponic cultivation increased from 35.5% to 100% after participating in educational and practical activities. These findings prove that a practice-based learning approach can strengthen modern agricultural literacy and foster entrepreneurial motivation.