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Chromium Bioremediation Using a Combination of Two Indigenous Rhizobacteria In Vitro Wahyu Surakusumah; Nurul Ilma Apriliani; Diah Kusumawaty; Wijanarka Wijanarka; Achmad Dinoto; Restu Utari Dewina
Al-Kauniyah: Jurnal Biologi Vol. 19 No. 2 (2026): AL-KAUNIYAH: JURNAL BIOLOGI
Publisher : Department of Biology, Faculty of Science and Technology, Syarif Hidayatullah State Islami

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15408/kauniyah.v19i2.44529

Abstract

Sukaregang, known for its leathercraft industry, faces chromium pollution from poorly managed tannery waste, affecting soil and water resources. The dynamic soil area influenced by plant roots, known as the rhizosphere, becomes a habitat for various microorganisms with unique metabolic capabilities that have significant potential as bioremediation agents for heavy-metal-contaminated environments. This study aims to evaluate the potential of indigenous bacterial consortia from the chromium-contaminated rhizosphere as bioremediation agents. Five bacterial genera: Pseudomonas, Citrobacter, Bacillus, Azotobacter, and Micrococcus, were identified as chromium-resistant in vitro. Compatibility tests showed that these bacterial combinations exhibited synergies without growth inhibition. Among the five consortia combinations tested (AB, BC, CD, DE, EA), consortium DE (Azotobacter and Micrococcus), exhibiting the most stable growth dynamics, characterized by a sustained stationary phase, suggesting a superior adaptive response to chromium-induced stress. Under chromium stress, the consortium EA (Micrococcus and Pseudomonas) achieved the highest chromium removal percentage at 30.78%. This study suggests that indigenous rhizobacterial consortia could be a practical approach to remediate chromium pollution in areas like Sukaregang.
Releksi Fungsi Lahan terhadap Biodiversitas Tumbuhan di Daerah Aliran Sungai Cilaja, Ujung Berung Hertien Koosbandiah Surtikanti; Wahyu Surakusumah; Tina Safaria; Afri Irawan; Amelia Qodaryanti
Jurnal Biodjati Vol 1 No 1 (2016): Jurnal Biodjati, Volume I, Nomor 1, November 2016
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v1i1.1039

Abstract

Abstrak. Ketergantungan manusia terhadap lahan sangat terlihat nyata dengan adanya perubahan fungsi lahan. Perubahan fungsi lahan juga berdampak terhadap tingkat biodiversitas tumbuhan. Studi ini mempelajari tingkat biodiversitas dan kelimpahan tumbuhan di tiga lokasi yang berbeda yaitu lahan konservasi pinus/perkebunan kopi, lahan persawahan dan lahan pemukiman. Ketiga lahan tersebut berada di Daerah Aliran Sungai (DAS) Cilaja yaitu di Desa Giri Mekar dan Desa Sindanglaya Kabupaten Bandung. Dalam penelitian ini dilakukan metode sampling struktur komunitas vegetasi untuk mengetahui komposisi, struktur dan jenis vegetasi serta perbedaan komunitas di tiga titik lokasi tersebut. Untuk analisis kuantitatif digunakan metode kuadran. Hasil penelitian menunjukkan bahwa lahan pemukiman desa lebih beragam dibandingkan dengan lahan sawah dan lahan perkebunan kopi. Dapat disimpulkan secara umum bahwa keterlibatan dalam mengelola lahan dapat merubah komunitas, tingkat keanekaragaman dan dominansi tumbuhan.Kata kunci : DAS, tingkat biodiversitas, metode sampling struktur komunitas vegetasi Abstract. Human dependence on land is very evident with the change in land use. Changes in land use also have an impact on the level of plant biodiversity. The study followed the level of biodiversity and abundance of plants in three different locations namely conservation land pine / coffee plantations, rice fields and residential land. The third land is located in the Watershed (DAS) Cilaja is in the village of Giri Mekar and Rural Sindanglaya Bandung regency. In this research, community structure vegetation sampling methods to determine the composition, structure and type of vegetation and the three-point difference in the communities that location. For quantitative analysis used kuadran method. The results showed that the rural residential land is more diverse than the wetland and coffee plantation. In general it can be concluded that involvement in land management can change the community, the level of diversity and dominance of plants.Keywords : DAS, level of biodiversity, community structure vegetation sampling methods
Partisipasi Komunitas Ekoenzim Dalam Perbaikan Kualitas Air Situ Bagendit, Garut Hertien Koosbandiah Surtikanti; Hernawati Hernawati; Wahyu Surakusumah
Proceeding Biology Education Conference: Biology, Science, Enviromental, and Learning Vol 21, No 1 (2024): Proceeding Biology Education Conference
Publisher : Universitas Sebelas Maret

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Abstract

Adanya revitalisasi dan penataan area Situ Bagendit dilakukan dalam rangka mempertahankan fungsi dalam pemeliharaan menjaga kelestarian lingkungan dan fungsi ekonomi. Kawasan Situ Bagendit sudah resmi dibuka lagi sejak tahun 2023 sebagai tempat wisata sehingga diharapkan mampu meningkatkan perekonomian masyarakat sekitar Kabupaten Garut. Kualitas Air Situ Bagendit dalam status hipertrofik (Hidayat, 2021) dan eutrofikasi yang artinya sudah terjadi pencemaran tinggi (Surtikanti dkk, 2023). Pengabdian kepada Masyarakat di Situ Bagendit dengan tema penuangan ekoenzim di danau Situ Bagendit, bertujuan untuk memperbaiki kualitas air. Kegiatan ini melibatkan beberapa Perguruan Tinggi yaitu Universitas Padjadjaran, Universitas Ma’soem, Universitas Winaya Mukti. Sekolah Tinggi Ilmu Kesehatan DHB, Universitas Islam As-syafiiyah, Universitas Islam Nusantara, Komunitas Ekoenzim Bandung, Rumah Edukasi Ecoenzym & Sekolah Konservasi Garut, Rumah Sakit Hasan Sadikin Bandung, guru-guru Musyawarah Guru Mata Pelajaran (MGMP) Biologi Kabupaten Garut dan Lions Club LCJS Metteyya Mahardhika Jakarta Selatan dengan total peserta berjumlah 110 orang. Ekoenzim yang terkumpul dari para komunitas mencapai 1.000 liter. Penuangan dilakukan di lima titik yaitu: menara swafoto, taman teratai, warung apung, masjid apung dan tempat rekreasi. Setelah kegiatan penuangan ekoenzim di Situ Bagendit diharapkan kualitas air menjadi lebih baik dan masyarakat lain dari seluruh instansi termotivasi untuk ikut berperan membuat ekoenzim (daur ulang limbah organik) dan ikut terlibat dalam menjaga kualitas danau. Eco enzyme, kita jaga alam, alam jaga kita
Pemanfaatan Limbah Sekam Padi (Oryza sativa Linn.) sebagai Media Fermentasi untuk Produksi Enzim Selulase oleh Aspergillus niger Eksa Adhwa Fadhilah; Peristiwati; Wahyu Surakusumah
Spizaetus: Jurnal Biologi dan Pendidikan Biologi Vol 6 No 2 (2025): Spizaetus: Jurnal Biologi dan Pendidikan Biologi
Publisher : Program Studi Pendidikan Biologi, FKIP, Universitas Nusa Nipa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55241/spibio.v6i2.559

Abstract

This study aims to optimize the production of cellulase enzyme by the cellulolytic fungus Aspergillus niger using rice husk powder (Oryza sativa Linn.) as substrate. Cellulase enzymes have important roles in various industrial applications, including the bioconversion of lignocellulosic waste into high-value products such as bioethanol, pulp, paper, and animal feed. The utilization of rice husk as a substrate offers economic and environmental advantages due to its abundant availability, low cost, and ability to reduce the volume of agricultural waste. The research method used a quantitative experimental approach to evaluate the effect of fermentation parameters, such as pH, temperature, and incubation time, on enzyme production. A. niger isolates were developed on carboxymethylcellulose (CMC) media to ascertain their cellulolytic capacity, with measurements of biomass, pH, temperature, and enzyme activity. The results showed that the biomass of A. niger increased from hour 0 to hour 96 at pH 4.5 to 5.5, and temperature 29.5°C to 30.5°C. The optimum condition for enzyme production was found at pH 4.5 and temperature 30.5°C, with the highest enzyme activity reaching 0.736 U/mL. These findings suggest that optimization of cellulase enzyme production from rice husk not only improves enzyme production efficiency, but also contributes to more sustainable waste management.
Peningkatan kualitas air pada budidaya ikan nila menggunakan sistem filtrasi bertingkat Wahyu Surakusumah; Diah Kusumawaty; Restu Utari Dewina; Aisyah Belva; Fadya Oktavia; Kirey Qanita; Naneu Nurfarida; Siti Nabila
Jurnal Abmas Vol. 26 No. 1 (2026): Jurnal Abmas
Publisher : Universitas Pendidikan Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17509/abmas.v26i1.670

Abstract

Algal bloom in Nile tilapia (Oreochromis niloticus) culture systems based on Recirculating Aquaculture Systems (RAS) can degrade water quality and increase the risk of fish stress. This community service program aimed to implement a multi-stage filtration system as an eco-friendly and energy-efficient solution to control microalgae growth and improve water quality in Nile tilapia culture ponds. The program was conducted through a Biology Study Program consultancy project involving lecturers, students, and the Padasuka Nila Cimahi aquaculture partner. The filtration system combined mechanical and biological filtration using fishing nets, gravel, kaldness K1, filter brushes, coral stones, and zeolite. Water quality parameters, including pH, Electrical Conductivity (EC), Total Dissolved Solids (TDS), and total ammonia, were evaluated before and after system implementation. The results showed that the filtration system reduced pH from 9.18 to 7.60, EC from 284 µS/cm to 212 µS/cm, TDS from 147 ppm to 115 ppm, and total ammonia from 0.5 mg/L to 0.18 mg/L. In addition, pond water became visually clearer, and microalgae growth decreased significantly. The multi-stage filtration system proved to be an effective, low-cost, and sustainable approach for improving water quality in small- to medium-scale Nile tilapia aquaculture systems.
Dry-Season Herpetofauna Diversity In Taman Hutan Raya Ir. H. Djuanda Amalia Zikra; Hernawati Hernawati; Wahyu Surakusumah
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): Juli - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i3.12497

Abstract

Herpetofaunal inventories provide baseline information for conservation, but detection is strongly influenced by season, habitat, and survey effort. This study assessed amphibian and reptile diversity in Taman Hutan Raya Ir. H. Djuanda, Bandung, during July–October 2025 using visual encounter surveys at nine selected locations. Surveys were conducted primarily between 07:00 and 11:00. Species were identified morphologically, and diversity was summarized using the Shannon–Wiener diversity index (H′) and Pielou evenness (E). A total of 57 individuals were recorded, comprising 24 amphibians from 10 species and 33 reptiles from 8 species. Amphibian diversity and evenness (H′ = 2.07; E = 0.90) were higher than those of reptiles (H′ = 1.14; E = 0.55), although reptiles were represented by more individuals. The sun skink was the most frequently recorded species. These findings provide a preliminary dry-season inventory; however, inference about overall diversity and habitat condition is limited by unequal survey effort, predominantly diurnal sampling, and the inclusion of opportunistic records. Repeated standardized surveys across seasons and day–night periods are required to obtain a more complete estimate of herpetofaunal diversity.
Co-Authors Abthal, Ok M. Achmad Dinoto Afifi Mutiarani Afri Irawan Afri Irawan, Afri Agie Syirban Gizawi Agustine, Liana Aisyah Belva Amalia Zikra Amelia Qodaryanti Aulia Fatharani Aulia Khaerunnisa Aulia Khairunnisa Aulia, Hanna Aziz, Adika Muhammad Azizah, Hilda Nur Azkiya Annurbaiti Bambang Supriatno Bangun, Adityana Arta Christofan, Vinno Bayu Dewina, Restu Utari Dewina, Utari Diah - Kusumawaty Didik Priyandoko Dieni Asma Mardiyah Dina Nur Permatasari Dini Indriani, Dini Ekaputri, Rendi Zulni Eksa Adhwa Fadhilah Erma, Nabila Fadhilah, Eksa Adhwa Fadhilah, Fathan Fadya Oktavia Fakhran Rozali Daulay Fatma Ainul Ilmia Fauziah, Abidah Fauziah, Aisyah Fikria Feldina Gustanti Gumanti, Zarfani Hadiprasetyo, Dhanar Septyawan Hadistia, Nabilla Halisa, Halisa Hanieyane, Dendu Noutera Pramayuditya Hanna Sari Widya Kusuma, Hanna Sari Widya Hardhaneszha, Azkaifa Syawqie Hendriantika, Ratu Dewi Hernawati Hernawati Hernawati Hernawati Hertien K Surtikanti Hertien Koosbandiah Surtikanti Hertien Koosbandiah Surtikanti Hildawati Febiana Irma Kusumastuti Juansah, Rahadian Deden Kamaludin, Syaris Khofifah, Tsani Kirey Qanita Kocha, Santana Koosbandiah Surtikanti, Hertien Kurniawan, Try Kusdianti Kusdianti Lestari, Emilia Mia Maesaroh, Tika Mardiyah, Dieni Asma Marhamah, Yualinda Durotul Marisca Evalina Gondokesumo, Marisca Evalina Maulana Yusuf Mauseni Wantika Dewi Mrs Sariwulan Diana Naneu Nurfarida Naufalia Zahrannanda Nisa Pangsuma Novilla, Arina Nur Ilmiah Sakinah Nurani, Lisna Wahyu Nurhaliza, Salma Setia Nurul Ilma Apriliani Nusayba Abdul Wahid Peristiwati Peristiwati, Peristiwati Polando, Chersy Tiffany Polandos, Chersa Steffany Polandos, Chersy Tiffany Prameswari, Alfi Hanifah Putra, Muhammad Naufal Nugraha R. Riandi, R. Rabani, Naila Aulia Ramadhani, Abidah Bunga Regina Pacis Resti*, Novita Restu Utari Dewina Riandi Riandi Rini Marwati Rizal Awaludin Malik Rizal Awaludin Malik, Rizal Awaludin Rizka Khairunisa Rizki, Fajri Khoirul Saffanah Nadhirah Salma Salsabila Sholihah, Ika Adhani Sijani Prahastuti Silaban, Oky Rizkiana Siti Nabila Siti Sofiah Soemarwoto, Rini Sri Anggraeni Suhara, . Surtikanti Hertien Koosbandiah, Surtikanti Syaris Kamaludin Tina Safaria Tina Safaria Nilawati Topik Hidayat WAHYU WIDOWATI Widi Purwianingsih Wijanarka Wijanarka YAYAN SANJAYA Yuliandini, Sinta Yunita Yunita Yusuf Andi Senjaya Zahira, Nurul Zahra Zahiroh, Fadhilah Haifa