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Journal : LIMNOTEK

 1 
Organochlorine and pyrethroid residue in fish and sediment of Lake Singkarak, a tropical deep lake Ibrahim, Aiman; Muhamad Suhaemi Syawal; Asep Nugraha Ardiwinata; Sugiarti; Mohamad Awaludin Adam; Wathri Fitrada; Riky Kurniawan
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 29 No. 2 (2023)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2023.2084

Abstract

Agricultural activities still involve the use of synthetic pesticides to support the increase of their products. On the other hand, the use of synthetic pesticides such as organochlorines and pyrethroids may contribute to the decline of aquatic ecosystem health due to the accumulation of their residues in sediments and organisms. The current study aimed to assess the levels of organochlorine and pyrethroids pesticide residue in endemic fish and sediment from Lake Singkarak. Bilih fish and sediment samples were taken in June 2021 at ten (10) sampling sites in Lake Singkarak. The samples were extracted and analyzed by gas chromatography. Seven organochlorine compounds were measured, including aldrin, endrin, dieldrin, DDT, heptachlor, lindan, and endosulfan. Meanwhile, three compounds chosen from the pyrethroid group, cypermethrin, permethrin, and α-cypermethrin, were also measured. Four organochlorine compounds, aldrin, dieldrin, DDT, and endrin, were detected in bilih fish in three different sites. Dieldrin had the highest concentration at nd-0.007 mg/kg, followed by DDT, endrin, and aldrin. Meanwhile, in the sediments, no organochlorine compounds were detected from all observed sites. Pyrethroid compounds were detected in bilih fish at six sites. The compound with the highest concentration was permethrin (nd-0.02 mg/kg), followed by cypermethrin and α-cypermethrin. The surface sediment from three sites contained two pyrethroid residues, permethrin and α-cypermethrin, at nd-0.002 and nd-0.001 mg/kg, respectively. Our findings show that the residual levels of organochlorine and pyrethroid in bilih fish still meet the standards set by the Codex Alimentarius Commission (CAC). Nevertheless, Bilih fish accumulate more pesticide than surface sediment, so it is essential to be aware of their potential accumulation in the human body as the final consumer. Restriction on synthetic pesticide application is necessary to reduce its residue input into the lake waters for ecological and human health.
Plankton Community Structure in the Estuaries of Banten Bay, Banten Province, Indonesia Sugiarti; Aldiano Rahmadya; Denalis Rohaningsih; Relita Novianti; Agus Waluyo; Aisyah, Siti; Rosidah
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 30 No. 2 (2024)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2024.5100

Abstract

Estuaries in Banten Bay support fisheries activities by serving as critical habitats for plankton communities, which form the foundation of the aquatic food web. This study aims to determine the structure of plankton communities, both phytoplankton and zooplankton, as baseline data for fisheries management in Banten Bay estuaries. Fieldwork was conducted in April and October 2021 at four estuaries in Banten Province: Karangantu, Wadas, Cengkok Estuary, and Pamong. Water samples were collected for plankton identification and analysis of physical and chemical water quality parameters in situ and laboratory. Key structural attributes, including Shannon - Wiener diversity index (H'), evenness index (E), dominance index (C), trophic status and canonical correspondence analysis (CCA), were also assessed. The highest abundance of phytoplankton was found in the Karangantu estuary, while the highest abundance of zooplankton was observed in the Pamong estuary, with overall abundance higher in April. Phytoplankton diversity was highest in Karangantu in October, whereas zooplankton diversity peaked in April. Plankton diversity indicated slight to moderate pollution levels, and trophic status analysis revealed eutrophic to hypertrophic conditions across the estuaries, suggesting high nutrient levels that support fish productivity. CCA revealed significant correlations between environmental variables and plankton composition and abundance. Mitigation strategies are recommended to monitor the growth of Chaetoceros sp. and Bacteriastrum sp., especially during the dry season. Long-term monitoring of water quality and plankton dynamics is essential in other estuaries of Banten Bay to assess nutrient loading impacts and develop strategies to mitigate harmful algal blooms. These efforts are critical to ensuring sustainable fisheries management in the region.
Effect of Light Intensity on Ammonium Removal and Biomass Growth in Different Levels of Aquaculture Effluent Using Duckweed (Lemna perpusilla) Agus Waluyo; Nirmala, Kukuh; Satya, Awalina; Puji Hastuti, Yuni; Chrismadha, Tjandra; Susanti, Evi; Sumi Lestari, Fajar; Nafisyah, Eva; Sugiarti; Nasrul, Muit
LIMNOTEK Perairan Darat Tropis di Indonesia Vol. 30 No. 2 (2024)
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55981/limnotek.2024.6420

Abstract

Cultivating duckweed in aquaculture effluent offers a viable approach to eliminating contaminants. The duckweed biomass obtained can be utilized for the generation of bioenergy. However, elevated levels of ammonium (NH4+) in aquaculture effluent, combined with variations in light intensity, can hinder biomass formation. The precise mechanisms underlying this inhibition remain incompletely elucidated. The study assessed the efficacy of duckweed (Lemna perpusilla) as a treatment agent for wastewater from catfish farms. The objective was to evaluate the growth response of duckweed and its efficacy in reducing ammonium levels. The research demonstrated that daily light intensity fluctuated using shade nets and that the ammonium concentration of aquaculture wastewater varied according to the age of the fish. The shade nets, which blocked 25% of the sunlight and had an average daily light intensity of 3433.34–15199.56 lux, demonstrated a slightly elevated NH4+ removal efficiency and duckweed productivity of 69.34% and 0.050 kg/m²/day, respectively. However, these values were not statistically significant when compared to conditions without shade nets, which had a removal efficiency of 63.97% and duckweed productivity of 0.042kg/m2/day (P<0.05). The implementation of shade structures that effectively decrease solar exposure by 25% shows promise for enhancing duckweed productivity and optimizing nutrient reduction in wastewater from fish cultivation systems. This approach contributes to the promotion of sustainable integrated aquaculture.
Co-Authors A. Octamaya Tenri Awaru Achmad Wahidy, Achmad Agus Waluyo Ahmad Fudhail  Majid Ai, Aisyah Aisyah, Siti Kharisma Nurul Akhodiyah, Sulistina Aldiano Rahmadya Alfiyah Anam, Mohammad Kaerul Andi Muhammad Kemai Arief Hidayat Paharuddin Andi Vania Anastasia Ariefah Yulandari Arti Prihatini As'ad, Ihwana Asep Nugraha Ardiwinata Ayu Lestari, Dyah AZUZ, FAIDAH Chrismadha, Tjandra Chusna, Adrini Amalia Cunayah Daroe Iswatiningsih Dasep Suryanto Denalis Rohaningsih Desi Ariyani Dewi Astuti Herawati Dewi Widyawati Dewiyanti Fadly Diah Ayu Amanah Dionysius Andang Arif Wibawa Djunaedi Dwi Alidya Safitri Eliya Septiarani Eva Desemberianita Evi Susanti Faiz Rahman Siddiq Faiz, Fauzi Abdullah Firmiaty, Sri Gaffar, Andi Widya Mufila Happy Fitria, Happy Hari Sunaryo Harlinda L Harun, Makmur Hasanah Setyowati Herawati, Ita Hilaluddin, Al Ibrahim, Aiman Ilham Akbar Intan Ramadhani Jumiyati Kukuh Nirmala Lailatul Fitriyah Lestari, Fitri Anggun Lia Idealistiana lilis nurhayati Listia Eka Sari Lutfiati, Arfia M. Fajrianor M.MUKLAS Majida, Andi Zulfa Manggiasih , Nurina Maria Lapriska Dian Ela Revita Maryono Mohamad Awaludin Adam Muhamad Suhaemi Syawal Muhammad Alwi Muhammad Yunus Muhammad Zusanri Batubara Nafisyah, Eva Nasrul, Muit Nasution, Dedek Handayani Nur Hanifa Nurfadilah Qafifah Nurmiati Nurul Fadillah Oktiyani, Rina Osi Karina Saragih Pangestu, Muhamad Aji Prilia Rahmadina Prima Gusti Yanti Puji Hastuti, Yuni Ramelan, Hazlansyah Relita Novianti Resti Septikasari Restiani, Winda Riky Kurniawan Rinata, Wayan Risa Indriani Robiatul Adawiyah Rosidah Safitri, Siti Indri Ainun Salnus, Subakir Samsul Hadi Saputra Adiwijaya Satya, Awalina Siti Aisyah Siti Latifah Siti Nurjannah Siwitri Wulandari Sri Dewi Lestari Sri Wulandari Samsul Sufyan, Muhamad Faza Aryansah Sugiarti, Riska Sumi Lestari, Fajar SUYONO Tenripada, A Ulfah Tika Sri Kinasih Titiek Puji Astuti Trian Fisman Adisaputra Triyono Wahyudi Winarjo, Wahyudi Wathri Fitrada Widi Hariyanti Yulandari, Ariefah Yulianti, Anisa Zenni Puspitarini Zulfan Zulfikar