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All Journal Jurnal Pembelajaran dan Biologi Nukleus
Tri Harsono
Departemen of Biology, Medan State University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media

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Species of Woody Plants in Green Open Spaces of Medan State University Yusran Efendi Ritonga; Tri Harsono
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 11, No 2: Jurnal Pembelajaran Dan Biologi Nukleus June 2025
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v11i2.6848

Abstract

Background: Universities play a critical role in the development of urban ecosystems, which include artificial forests, parks, and green open spaces. Medan State University is one of the campuses in Medan City, North Sumatra, that boasts a significant amount of green open space. In order to identify and prioritize the conservation of woody plant species, data collection is necessary. Methodology: The method employed exploration, which involves the recording of all woody plants and their presentation in a qualitative descriptive format. Findings: The data on woody plants in the green open spaces of Medan State University are categorized into 2 subdivisions, 48 families, and 146 species, as indicated by the study's findings. Contribution: Protective plants, medicinal plants, spices, fresh fruits, and ornamental plants are all utilized. It is anticipated that the findings of this investigation will serve as a reference for future research on woody plants in urban green open spaces
Identification of Fern Species (Pteridophyta) in The Salak Orchard Area of Cimande Village, Caringin District, Bogor Yusran Efendi Ritonga; Tri Harsono
JURNAL PEMBELAJARAN DAN BIOLOGI NUKLEUS Vol 12, No 3: Jurnal Pembelajaran Dan Biologi Nukleus September 2026
Publisher : Universitas Labuhanbatu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36987/jpbn.v12i3.7966

Abstract

Background: Ferns (Pteridophyta) are components of ecosystems and can become important weeds in plantations, including salak orchards. Research on Pteridophyta in salak orchards has not yet been reported; therefore, an inventory of fern species is necessary. Methodology: The method used was an exploration survey conducted throughout the salak orchards, covering an area of 8,519 m². Each fern species encountered was collected, described, and documented, and the results were subsequently presented using a qualitative descriptive approach. Fern identification was carried out using relevant books, scientific journals, and online resources. Findings: A total of 18 fern species (Pteridophyta) belonging to 9 families were recorded. Regarding habitat preference, 67% of the fern species were terrestrial, 22% were epiphytic, and 11% were found in both terrestrial and epiphytic habitats. The environmental factors at the study site included soil pH ranging from 6.2–6.8, soil moisture of 70–100%, air temperature of 25–29°C, air humidity of 84–96%, and light intensity of approximately 141–152 lux. Contributions: Environmental conditions were associated with the diversity of fern species recorded in the salak orchards of Cimande Village, Caringin District, Bogor Regency, West Java. Although often considered weeds, ferns may contribute to maintaining soil moisture, and this study provides baseline information on their diversity and habitat associations in salak orchard agroecosystems
Co-Authors Yusran Efendi Ritonga