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JURNAL BIOLOGI PAPUA
Published by Universitas Cenderawasih
ISSN : 25030450     EISSN : 20863314     DOI : 10.31957/jbp
Core Subject : Science, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Environmental Science Materials Science & Nanotechnology
JURNAL BIOLOGI PAPUA dengan nomor ISSN: 2503-0450 dan EISSN: 2086-3314 diterbitkan oleh Jurusan Biologi FMIPA Universitas Cenderawasih. Jurnal ini mempublikasikan tulisan ilmiah hasil penelitian asli maupun telaah pustaka (review) yang berhubungan dengan biologi secara umum. Penulis dianjurkan menuliskan karyanya dalam Bahasa Inggris, walaupun dalam Bahasa Indonesia tetap kami hargai. Jurnal ini terbit dua kali setahun setiap Bulan April dan Oktober.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 252 Documents
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Isolation and characterization of nickel, lead, copper, and cadmium-multiresistant bacteria from the Citarum River, West Java Ruga, Deokward F.; Irawati, Wahyu
Jurnal Biologi Papua Vol 18 No 1 (2026)
Publisher : Jurusan Biologi FMIPA Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jbp.5286

Abstract

Industrial activities along the Citarum River, West Java, have resulted in serious heavy metal contamination, causing negative impacts on aquatic ecosystems and human health. Bioremediation using indigenous bacteria with multi-metal resistance offers an efficient and environmentally friendly solution because these bacteria are directly obtained from contaminated environments and are resistant to several heavy metals simultaneously. This study aimed to isolate and characterize indigenous bacteria from the Citarum River that are multiresistant to a mixture of four heavy metals, namely nickel, lead, copper, and cadmium. The bacteria were isolated using the spread plate method on Luria–Bertani Agar supplemented with a mixture of those heavy metals at a concentration of 1 mM. The isolates were purified by the streak plate method and characterized based on colony morphology and cell morphology through Gram staining. The results showed that 24 bacterial isolates were successfully obtained, all of which were able to grow in a 1 mM mixture of nickel, lead, copper, and cadmium. Morphological characterization revealed diverse colonies dominated by yellow, white, and brown pigmentation, with circular shapes and smooth margins. Gram staining showed that all isolates were Gram-negative bacteria. A total of 16 isolates exhibited darker pigmentation, ranging from dark brown to blackish, when cultivated on heavy-metal-containing media. Dark-colored colonies indicate intensive interactions through biosorption and bioprecipitation mechanisms, resulting in the formation of insoluble compounds such as metal sulfides on the cell surface.   
Lichen diversity as an air quality bioindicator in the Mount Tilu Nature Reserve (MTNR) Bandung Aryanto, Arie; Nurmawati, Subekti; Alifiyah, Na’ilah I.; Zikriyani, Hikmah; Hamdani, Fauzan; Sinyo, Filemon M.
Jurnal Biologi Papua Vol 18 No 1 (2026)
Publisher : Jurusan Biologi FMIPA Universitas Cenderawasih

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31957/jbp.5295

Abstract

MTNR in Pangalengan, West Java, is a conservation area with high biodiversity that is increasingly pressured by tourism and agricultural activities, which may affect air quality. This study aimed to examine the relationship between air quality and lichen diversity as bioindicators of air pollution. A descriptive exploratory method was applied at four site types representing different levels of human activity: forest, roadside, plantation, and tourist areas. The results showed that microclimatic conditions and air quality at all sites were classified as good according to Government Regulation No. 22/2021. However, lichen diversity and thallus composition varied among sites in response to environmental conditions. Crustose lichens dominated roadside and plantation areas with higher environmental stress, while foliose and fruticose lichens were more abundant in forest areas characterized by lower temperatures, higher humidity, and minimal pollution. The presence of sensitive species such as Usnea sp. and Ramalina sp. indicated superior air quality in forest sites. In conclusion, lichen distribution reflects an air quality gradient across the study area, confirming the effectiveness of lichens as reliable bioindicators for ecological monitoring in conservation areas.

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