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All Journal Biogenesis: Jurnal Ilmiah Biologi Jurnal Sumberdaya Hayati Jurnal Biologi Tropis
Afri Irawan, Afri
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology

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Diversitas dan Komposisi Flora Paku (Pteridophyta) di Perkebunan Teh Nirmala Citalahab, Kecamatan Kabandungan, Sukabumi, Jawa Barat: Diversity and Composition of Pteridophytes at Nirmala Citalahab Tea Plantation, Kabandungan District, Sukabumi, West Java Irawan, Afri; Maulana, Lana; Djuita, Nina Ratna; Ariyanti, Nunik Sri; Chikmawati, Tatik
Jurnal Sumberdaya Hayati Vol. 10 No. 3 (2024): 2024
Publisher : Departemen Biologi, Institut Pertanian Bogor

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jsdh.10.3.128-135

Abstract

Pteridophytes are able to live in a variety of habitats resulting in high species diversity. However, in monoculture vegetation such as tea plantations, species diversity can be reduced. This study aimed to compare the composition of the pteridophytes on the edge of the main road and the area in the tea garden at the Nirmala Tea Plantation, Kabandungan District, Sukabumi, West Java. Samples were collected using the exploratory method, then identified and observed for their morphological characteristics, and then the data were analyzed descriptively. The diversity of pteridophytes in the tea garden area (18 species) was lower than the main roadside tea plantation (25 species). Some species in the tea plantations were only found in the tea garden area (7 species) or on the side of the main roadside (14), and there were also species found in both locations (11 species). Pteridophytes in the study area is dominated by terrestrial ferns and the Polypodiaceae family. Soil moisture and wind speed are more influential factors on the diversity of pteridophytes than other abiotic factors measured. This result is new information on the diversity of fern in the Tea Plantation.
Analysis of Insect Communities in Gmelina arborea Plantation of Different Stand Ages in Cibugel, West Java Dewina, Restu Utari; Irawan, Afri
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9211

Abstract

Community timber plantation has an essential role as a source for the wood industry. One of the community timber plantations is located in Cibugel, Sumedang Regency, West Java. Lots of Gmelina arborea are planted in this community timber plantation because it does not need specific care and have a short cutting time. However, planting Gmelina in a community timber plantation leads to insect attacks on trees from different age groups, which could decrease wood production. Sustainable insect pest control efforts can be carried out by first understanding the structure of insect communities at different plant ages. Therefore, a study was conducted to compare the diversity of insect communities in plant age groups of 2, 4, and 15 years using the pitfall trap and sticky trap methods, supported by the hand searching method and microclimate data collection. In addition, plant damage caused by insects was also determined by analyzing the absolute and relative damage intensity. The results show that the dominant insect community in Gmelina age groups 2 and 15 years is Formicidae, which are generally classified as predators. Meanwhile, in the 4-year age group, the insect community was dominated by insects classified as herbivores, pests of G. arborea plants. These results align with the highest level of plant damage, namely in the 4-year age group.
Sensitifitas Tahapan Spermatogenesis dan Perubahan Profil Stress Oksidatif Jaringan Testis akibat Paparan Toksikan dalam Lindi Yulianty, Nurfitri; Istanti, Edwina; Yusuf, Ayda Trisnawaty; Irawan, Afri
Biogenesis: Jurnal Ilmiah Biologi Vol 12 No 2 (2024)
Publisher : Department of Biology, Faculty of Sci and Tech, Universitas Islam Negeri Alauddin Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24252/bio.v12i2.57633

Abstract

Exposure to environmental waste such as landfill leachate has the potential to cause genotoxic effects and oxidative stress impacting the mammalian reproductive system. This study examined the effects of Sarimukti Landfill Leachate (LTS) on sperm DNA damage and testicular oxidative stress in male Wistar rats. Rats were exposed to LTS at concentrations of 0%, 35%, and 63% during distinct spermatogenesis stages: mitosis (MTS), meiosis (MSS), and spermiogenesis (SMGS). Sperm DNA damage was assessed using the Sperm Chromatin Dispersion (SCD) assay, while testicular oxidative stress was measured by quantifying Malondialdehyde (MDA) and total protein levels. The results showed dose-dependent sperm DNA damage across all spermatogenesis stages, with the most significant damage observed at the 63% LTS dose. Sperm DNA damage levels were highest in the MTS group (93.53%), followed by MSS (87.5%) and SMGS (86.8%). The 63% LTS dose also increased testicular lipid peroxidation, as indicated by elevated MDA levels (4.63 µM/mL). This suggests that LTS can damage lipid components in testicular tissue. Additionally, the 63% LTS dose reduced total protein levels in testicular tissue to 63.55 µg/mL, compared to 108.31 µg/mL in the control group. Heavy metals (arsenic, plumbum, nickel, chromium) and organic pollutants in LTS generated reactive oxygen species (ROS) in germ cells, disrupting cellular repair mechanisms also inducing lipid and protein oxidation. This oxidative stress further exacerbated sperm chromatin fragmentation. These findings highlight the reproductive toxicity of landfill leachate and emphasize the need for protective measures during early spermatogenesis stages. This study provides insights into the environmental impacts on male fertility and underscores the risks of genotoxic exposure.
Co-Authors Dewina, Restu Utari Istanti, Edwina maulana, lana Nina Ratna Djuita NUNIK SRI ARIYANTI TATIK CHIKMAWATI Yulianty, Nurfitri Yusuf, Ayda Trisnawaty