Article Per Year (5 Year)
p-Index From 2021 - 2026
0.408
P-Index
This Author published in this journals
All Journal Jurnal Penelitian Pendidikan IPA (JPPIPA) Bioma : Jurnal Biologi Indonesia
Muhammad Ridwan
Institut Pertanian Bogor
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Education Immunology & microbiology Materials Science & Nanotechnology Physics

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
Response of (Kopsia arborea Blume) Seed Germination to Rhizosphere Microbial Treatment Muhammad Ridwan; Arum Sekar Wulandari; Yunik Istikorini
Jurnal Penelitian Pendidikan IPA Vol 12 No 1 (2026)
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v12i1.12925

Abstract

Kopsia arborea Blume is a plant species with high bioactive potential, yet its cultivation remains underdeveloped. One of the primary challenges in generative propagation is the low viability and slow seed germination rate. This study aims to analyze the effect of generative materials and rhizosphere microbes on the germination of Kopsia seeds. The generative materials used include whole fruits and fruit embryos of Kopsia. The rhizosphere microbes applied consist of a mixture of Trichoderma sp., Bacillus sp., Pseudomonas sp., and Azospirillum sp. The generative materials were cultivated in sand media over a two-month observation period. The observed parameters included the germination process, germination capacity, maximum growth potential, mean germination time, germination rate, vigor index, plant height, seedling length, total fresh weight, total dry weight, and shoot-root ratio. The treatment of generative materials significantly influenced germination capacity, mean germination time, germination rate, total fresh weight, total dry weight, and shoot-root ratio. Microbial applications affected germination capacity, mean germination time, maximum growth potential, vigor index, and seedling length. Overall, both whole fruits and embryos of kopsia are suitable for generative propagation. However, microbial applications are only necessary when propagation is conducted using whole fruits.
Freshwater fish diversity in semi‑urban artificial lakes: A case study from IPB Dramaga Campus, Indonesia Winda Eka Putri; Muhammad Ridwan; Nur Anisa; Astihawa Indah Setiani; Rizki Rahma Hayati; Dyah Perwitasari-Farajallah
Bioma Vol. 22 No. 1 (2026): Bioma
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/bioma.v22i1.55659

Abstract

Fish diversity is widely used as an indicator of freshwater ecosystem stability and environmental quality, particularly in semi-urban areas experiencing increasing anthropogenic pressure. This study assessed fish diversity in three artificial lakes on the IPB University Dramaga Campus: Lake LSI, Lake SDGs, and Telaga Inspirasi. Sampling was conducted in April 2025 using a combination of active and passive capture methods. Collected specimens were identified to species level, and diversity was evaluated using the Shannon, Simpson, and evenness indices. A total of 12 fish species from nine families were recorded. Five species were introduced, with Oreochromis niloticus and Poecilia reticulata identified as the dominant taxa. Telaga Inspirasi exhibited the highest Shannon index (1.390) and the lowest Simpson value (0.733), indicating relatively high diversity and low dominance. Lake LSI supported the greatest species richness (10 species) but showed relatively high dominance (Simpson index = 0.581). Lake SDGs displayed the highest evenness value (0.610), reflecting a more balanced distribution of individuals. Environmental parameters at all sites remained within suitable ranges for fish survival. These findings highlight differences in fish community structure among lakes and emphasise the importance of ecological monitoring for freshwater biodiversity management.
Co-Authors Arum Sekar Wulandari Astihawa Indah Setiani Dyah Perwitasari-Farajallah Nur Anisa Rizki Rahma Hayati Winda Eka Putri Yunik Istikorini