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All Journal Dharma Raflesia : Jurnal Ilmiah Pengembangan dan Penerapan IPTEKS Bioscientist : Jurnal Ilmiah Biologi Jurnal Biosilampari: Jurnal Biologi
Putri Lisya Anggraini
Biologi FMIPA Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Social Sciences Other

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Respon Komunitas Bacillariophyceae terhadap Kualitas Air Sub-Das Kedurang: Bukti Dominansi Synedra ulna dalam Kawasan RHL Meliya Wati; Putri Lisya Anggraini; Novia Duya
Jurnal Biosilampari : Jurnal Biologi Vol 7 No 2 (2025): Biosilampari: Jurnal Biologi
Publisher : Universitas PGRI Silampari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62112/biosilampari.v7i2.225

Abstract

This study aims to examine the dominance of Synedra ulna as a bioindicator in assessing the water quality of the Kedurang Sub-watershed (Sub-DAS) located within the Forest and Land Rehabilitation (RHL) area of Batu Ampar Village, South Bengkulu. A quantitative and qualitative approach was used by measuring physicochemical parameters (temperature, pH, TDS, and DO) and analyzing the phytoplankton community structure, with a focus on the Bacillariophyceae class. Samples were collected purposively from two stations with different ecological conditions. The results showed that Synedra ulna was highly dominant, with dominance index values of 0.75 and 0.92 at Stations 1 and 2, respectively. The water's physicochemical conditions were within the optimal range for phytoplankton growth, with temperatures of 24.9–29.8°C, pH of 7.5–8.0, TDS of 103–125 ppm, and DO of 7.9–8.2 ppm. The high dominance of S. ulna indicates moderate ecological pressure due to anthropogenic activities and suggests that the aquatic ecosystem is in a recovery phase. These findings highlight the potential of Synedra ulna as an effective ecological indicator for monitoring the success of forest and land rehabilitation efforts
Pelatihan Produksi Minuman Probiotik Tepache dan Cuka Nanas dari Buah Nanas untuk Peningkatan Ekonomi Kreatif Ibu PKK Desa Arga Mulya RISKY H WIBOWO; Agustin Zarkani; Salprima Yudha S; Etriyanto Arman; Putri Lisya Anggraini; Evan Vria Andesmora; Thoriqul Hidayah; Rangga Ardiansyah; Rindiyani; Livia Rayani Sinaga
DHARMA RAFLESIA Vol 24 No 1 (2026): JUNI (ACCREDITED SINTA 5)
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/dr.v24i1.45139

Abstract

Nanas (Ananas comosus L.) merupakan salah satu komoditas buah unggulan yang banyak dibudidayakan di Desa Arga Mulya, Kecamatan Padang Jaya, Kabupaten Bengkulu Utara. Melimpahnya hasil panen menghasilkan limbah kulit nanas yang belum dimanfaatkan secara optimal. Pengabdian masyarakat ini bertujuan untuk memberdayakan ibu-ibu PKK melalui peningkatan pengetahuan dan keterampilan dalam mengolah limbah kulit nanas menjadi produk fermentasi bernilai tambah dan bernilai jual, yaitu minuman probiotik tepache dan cuka nanas. Metode kegiatan meliputi sosialisasi, pelatihan pembuatan, pendampingan produksi, dan evaluasi. Respons positif dari peserta menunjukkan bahwa kegiatan ini berhasil menjadi solusi aplikatif dalam meminimalisir limbah pertanian sekaligus mampu meningkatkan ekonomi kreatif di desa. Melalui program ini, ibu-ibu PKK diharapkan mampu memproduksi minuman probiotik secara mandiri sebagai peluang usaha baru, meningkatkan pendapatan keluarga, serta sebagai minuman sehat untuk masyarakat yang dapat dikonsumsi setiap hari. Hasilnya, peserta memahami cara membuat dan manfaat tepache serta cuka nanas, menunjukkan keberhasilan kegiatan dan respons positif dari peserta. Kegiatan ini diharapkan menjadi solusi pengolahan buah nanas sekaligus menambah wawasan masyarakat setempat, dengan harapan ibu-ibu PKK mampu menghasilkan minuman probiotik bernilai jual tinggi yang dapat mengurangi ketergantungan pada obat kimia.
Assessment of Carbon Storage and Ecological Functions of Beach Sheoak (Casuarina equisetifolia) in Muara Cemara, Pantai Panjang, Bengkulu City Putri Lisya Anggraini; Darmi; Rizwar; Meliya Wati; Siti H. Norfahmi
Bioscientist : Jurnal Ilmiah Biologi Vol. 14 No. 2 (2026): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v14i2.18906

Abstract

This study aimed to estimate the aboveground biomass, carbon stock, and carbon dioxide (CO₂) sequestration of coastal she-oak (Casuarina equisetifolia) stands in Muara Cemara, Pantai Panjang, Bengkulu City, and to describe their ecological functions based on field observations. The study was conducted in September 2025 using a non-destructive method based on the allometric equation ln Y = –2.177 + 2.523(ln DBH). Data were collected from 17 systematically established plots, each measuring 20 m × 20 m. The results showed that the stands had an aboveground biomass of 2.37 ± 0.63 t ha⁻¹, a carbon stock of 1.09 ± 0.20 t C ha⁻¹, and CO₂ sequestration of 4.01 ± 1.06 t CO₂ ha⁻¹. The 21–30 cm diameter class contributed the largest proportion of total biomass and carbon stock, indicating the important role of medium-sized trees in carbon accumulation. Ecologically, C. equisetifolia may contribute to reducing coastal erosion, stabilizing sandy substrates, improving microhabitat conditions, and supporting coastal habitat functions. These findings indicate that C. equisetifolia stands have potential as a complementary component of coastal carbon storage, climate change mitigation, and ecosystem-based coastal management in sandy coastal environments.
Kelimpahan Fitoplankton sebagai Bioindikator Lingkungan Perairan di Sungai Uram, Kabupaten Lebong Meliya Wati; Novia Duya; Gress Pinesta; Putri Lisya Anggraini; Khonita R. Diani; Darmi; Rizwar
Jurnal Biosilampari : Jurnal Biologi Vol 8 No 2 (2026): Biosilampari: Jurnal Biologi
Publisher : Universitas PGRI Silampari

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62112/biosilampari.v8i2.674

Abstract

Phytoplankton are primary producers that respond rapidly to environmental changes and therefore have considerable potential as bioindicators of aquatic ecosystem conditions. This study aimed to analyze the abundance and community structure of phytoplankton and evaluate their ecological significance as bioindicators in the Uram River, Lebong Regency, Bengkulu Province. Sampling was conducted at four stations representing different habitat characteristics along the river continuum, including upstream, dam-influenced, settlement-associated, and downstream segments. Phytoplankton samples were collected using a plankton net and identified microscopically. Community analysis included abundance, Shannon-Wiener diversity, evenness, and dominance. A total of 52 phytoplankton species belonging to eight classes were identified, with Bacillariophyta as the dominant group, contributing 46.2% of the total species composition. The highest abundance was recorded at Station I (2,316.6 ind/L), while the highest diversity index was observed at Station III (H' = 3.380). High evenness values (0.855–0.898) and low dominance values (0.072–0.097) indicated a relatively stable community structure. Variations in phytoplankton composition among stations reflected differences in habitat conditions influenced by flow velocity, substrate characteristics, riparian vegetation, and human activities. These findings demonstrate that phytoplankton are effective bioindicators for assessing ecological conditions and provide baseline information for aquatic resource management and biomonitoring programs in the Uram River.
Co-Authors Agustin Zarkani Darmi Etriyanto Arman Evan Vria Andesmora Gress Pinesta Khonita R. Diani Livia Rayani Sinaga Meliya Wati Novia Duya Novia Duya Rangga Ardiansyah Rindiyani RISKY H WIBOWO Rizwar Salprima Yudha S Siti H. Norfahmi Thoriqul Hidayah