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All Journal Habitus Aquatica : Journal of Aquatic Resources and Fisheries Management Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan
Cahyati, Nur Alam Dwi
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science

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Phytoplankton Community Structure in Palabuhanratu Bay: Struktur Komunitas Fitoplankton di Perairan Teluk Palabuhanratu Cakasana, Nadya; Sunuddin, Adriani; Srimariana, Endang Sunarwati; Lestari, Dea Fauzia; Setyaningsih, Wahyu Adi; Kusumastuti, Desi Nurulita; Az Zahra, Lilyana; Yonatika, Niken Oktaviandini; Ningtyas, Azizah Lutfia; Amigunani, Zahra Wajdini; Lotaldy, Alnodio; Kautsaharani, Fanasya; Cahyati, Nur Alam Dwi; Kamini, Qudsi Athiyyah
Habitus Aquatica Vol 5 No 1 (2024): Habitus Aquatica : Journal of Aquatic Resources and Fisheries Management
Publisher : Department of Aquatic Resources Management, Faculty of Fisheries and Marine Science, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/HAJ.5.1.1

Abstract

Fitoplankton sebagai organisme autotrof berperan sebagai produsen primer dan kerap digunakan untuk mengukur kesuburan suatu perairan. Perairan Palabuhanratu yang memiliki sumberdaya perikanan memiliki sejumlah aktivitas manusia di sekitarnya. Penelitian ini bertujuan untuk mengetahui struktur komunitas di Perairan Palabuhanratu. Sampel fitoplankton diambil pada Oktober 2022 dari empat stasiun, parameter fisika dan kimia air yang diambil antara lain suhu, salinitas, pH, dan DO. Terdapat enam kelas dan 27 genus fitoplankton yang ditemukan antara lain Dinophyceae, Bacillariophyceae, Oligotrichea, Chlorophyceae, Polycystina, dan Trebouxiophyceae dengan kelas yang dominan yaitu Bacillariophyceae. Kelimpahan fitoplankton tergolong rendah dengan kisaran 66–695 ind/l. Indeks keanekaragaman tergolong sedang dengan nilai 1,552–2,234. Parameter perairan menunjukkan bahwa kondisi masih mendukung pertumbuhan fitoplankton.
Biodegradation activities of microplastic polymers by Agelas conifera spongesymbiotic bacteria Ismet, Meutia Samira; Srimariana, Endang Sunarwati; Cahyati, Nur Alam Dwi; Anggraini, Nurlita Putri; Simbolon, Lenni Mariana; Cakasana, Nadya; Sari, Anita Edya Melliana; Rafi, Mohamad
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.35939

Abstract

Research on microplastic (MP) accumulation in marine organisms' tissue have been widely conducted, as well as research on microplastic biodegradation by microbial organisms from the environment. Agelas conifera sponge is proven to accumulate MP in its tissue as well as having bacteria as symbiotic organism. This research aims to screen and study biodegradation activities of A. conifera symbiotic bacteria on MP polymers, also to identify the species of those bacteria isolates. Bacterial Isolation of A. conifera sponge tissue was using Zobell 2216E agar media. Screening and biodegradation assay of the bacteria isolates was conducted on Marine Salt Media agar that was added with 0,5 g of MP polymers, using Kroc-Boral method. Diameter of clear (bacterial growth) zone surrounding Kroc-Boral indicated the biodegradation activity of the bacterial isolates. Statistical analysis on the activity was using Two Way ANOVA. Results showed that there were 9 bacterial isolates of 53 that could degrade several MP polymers, with different activities (ANOVA, p value 0.05). High and low-density polymers (Linear- Low Density PolyEthylene/ LLDPE, Polyethylene/PE, and Polyvinyl Chloride/ PVC) were found to be degraded by all 9 isolates. Meanwhile, Polyethylen Taraphtalene (PET) and Polystyrene (PS) only degraded by 8 and 3 isolates, respectively. There are only 5 isolates that have high biodegradation index (1.5) on different polymers, which mostly on PET polymer. Isolate Ac8MP found to be the most bacteria that have degradation index on all polymers more than 1. This research proves that symbiotic bacteria could have a biodegradation mechanism on MP polymers that accumulates by sponge-host. However, further study needs to be done to understand the mechanisms and effectiveness of sponge-bacterial biodegradation activity.Keywords:Dumbo catfishLeukocytesErythrocytesGlucoseMusa AcuminataAeromonas hydrophila
Biodegradation activities of microplastic polymers by Agelas conifera spongesymbiotic bacteria Ismet, Meutia Samira; Srimariana, Endang Sunarwati; Cahyati, Nur Alam Dwi; Anggraini, Nurlita Putri; Simbolon, Lenni Mariana; Cakasana, Nadya; Sari, Anita Edya Melliana; Rafi, Mohamad
Depik Jurnal Ilmu Ilmu Perairan, Pesisir, dan Perikanan Vol 14, No 2 (2025): JUNE 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.2.35939

Abstract

Research on microplastic (MP) accumulation in marine organisms' tissue have been widely conducted, as well as research on microplastic biodegradation by microbial organisms from the environment. Agelas conifera sponge is proven to accumulate MP in its tissue as well as having bacteria as symbiotic organism. This research aims to screen and study biodegradation activities of A. conifera symbiotic bacteria on MP polymers, also to identify the species of those bacteria isolates. Bacterial Isolation of A. conifera sponge tissue was using Zobell 2216E agar media. Screening and biodegradation assay of the bacteria isolates was conducted on Marine Salt Media agar that was added with 0,5 g of MP polymers, using Kroc-Boral method. Diameter of clear (bacterial growth) zone surrounding Kroc-Boral indicated the biodegradation activity of the bacterial isolates. Statistical analysis on the activity was using Two Way ANOVA. Results showed that there were 9 bacterial isolates of 53 that could degrade several MP polymers, with different activities (ANOVA, p value 0.05). High and low-density polymers (Linear- Low Density PolyEthylene/ LLDPE, Polyethylene/PE, and Polyvinyl Chloride/ PVC) were found to be degraded by all 9 isolates. Meanwhile, Polyethylen Taraphtalene (PET) and Polystyrene (PS) only degraded by 8 and 3 isolates, respectively. There are only 5 isolates that have high biodegradation index (1.5) on different polymers, which mostly on PET polymer. Isolate Ac8MP found to be the most bacteria that have degradation index on all polymers more than 1. This research proves that symbiotic bacteria could have a biodegradation mechanism on MP polymers that accumulates by sponge-host. However, further study needs to be done to understand the mechanisms and effectiveness of sponge-bacterial biodegradation activity.Keywords:Dumbo catfishLeukocytesErythrocytesGlucoseMusa AcuminataAeromonas hydrophila
Co-Authors Adriani Sunuddin Amigunani, Zahra Wajdini Anggraini, Nurlita Putri Az Zahra, Lilyana Dea Fauzia Lestari, Dea Fauzia Endang Sunarwati Srimariana Kamini, Qudsi Athiyyah Kautsaharani, Fanasya Kusumastuti, Desi Nurulita Lotaldy, Alnodio M. Rafi Meutia Samira Ismet Nadya Cakasana Ningtyas, Azizah Lutfia Sari, Anita Edya Melliana Setyaningsih, Wahyu Adi Simbolon, Lenni Mariana Yonatika, Niken Oktaviandini