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Biosel: Biologi Science and Education

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Published by Institut Agama Islam Negeri Ambon

ISSN : 2252858X EISSN : 25411225 DOI : -

Core Subject : Science, Education, Agriculture, Social,

Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Energy Environmental Science

Journal Biosel receiving articles of the results of the study in biology field and education. This journal rising twice a year, namely edition of january-june and edition of july-december.

Arjuna Subject : -

Articles 292 Documents

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Analisis Struktur Komunitas Fitoplankton di Beberapa Ekosistem Air Terjun Kecamatan Jabung, Kabupaten Malang Salsabila, Dina; Catur Retnaningdyah; Yusuf, Muhammad
Biosel Biology Science and Education Vol. 15 No. 1 (2026): BIOSEL (Biology Science and Education: Jurnal Penelitian Sains dan Pendidikan)
Publisher : INSTITUT AGAMA ISLAM NEGERI AMBON

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33477/bs.v15i1.12791

Phytoplankton are primary biotic components of aquatic ecosystems that are highly sensitive to environmental changes and are therefore widely used as biological indicators of water quality. However, information on phytoplankton community structure in waterfall ecosystems remains limited, particularly in tropical regions. This study aimed to analyze the phytoplankton community structure in waterfall ecosystems in Jabung district as a basis for assessing water quality. Sampling was conducted at four waterfall sites, namely Siuk, Tarzan, Toris, and Jahe, with three replicates at each location. Phytoplankton samples were collected by filtering 3 liters of water using a plankton net with a mesh size of 40 µm, then preserved with 4% formalin (10 drops) and CuSO₄ (5 drops). Identification and enumeration of phytoplankton were performed using 1 mL of sample placed in a Sedgewick–Rafter Counting Chamber and observed under a binocular microscope (100× magnification) across 1,000 fields of view. The collected data were used to calculate abundance, taxonomic richness, community composition, the Shannon–Wiener diversity index (H’), evenness index (E), and dominance index (D). The results showed that phytoplankton taxa were present in all observed waterfall ecosystems, consisting of Bacillariophyceae (21 genera), Chlorophyceae (9 genera), Cyanophyceae (5 genera), Zygnematophyceae (9 genera), and Trebouxiophyceae (1 genus). The highest diversity index was recorded at Jahe Waterfall (H’ = 4.50), while the lowest was found at Siuk Waterfall (H’ = 4.17). The highest evenness index occurred at Siuk Waterfall (E = 0.8773), with a dominance index value of 0.075. Overall, all sites exhibited high diversity (H’ > 3) and very low dominance, indicating that phytoplankton communities were stable and well balanced across all investigated waterfall ecosystems. Keywords: Water Quality, Phytoplankton, Community, Waterfalls, Diversity

Species Diversity of Lichen as A Bioindicators of Air Quality at The State Polytechnic of Jember Agustin, Mili; Avika Aditya Febriana Putri; Ika Nuraini; Yohana Maharani Pitaloka; Putri Saniyyah Rahmalisa Az Zahra; Retno Wimbaningrum; Rendy Setiawan
Biosel Biology Science and Education Vol. 15 No. 1 (2026): BIOSEL (Biology Science and Education: Jurnal Penelitian Sains dan Pendidikan)
Publisher : INSTITUT AGAMA ISLAM NEGERI AMBON

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33477/bs.v15i1.12855

Lichens are symbiotic organisms that are sensitive to changes in air quality, so they are widely used as environmental bioindicators. The purpose of this study was to determine the diversity of lichens in the Jember State Polytechnic area and to assess air quality based on the Atmospheric Purity Index (API). The research was conducted at nine observation sites using a purposive sampling method with 10 × 10 cm plots on four sides of tree trunks at each point. Lichen samples were collected, identified based on morphological characteristics, and their coverage percentage was calculated to obtain frequency values and ecological indices used in the ACI calculation. The results showed that 25 types of lichens were found with a coverage area of 8.647%. The highest ACI value was found in the Department of Language, Communication, and Tourism with a value of 0.35, while the lowest values were found in the Department of Information Technology and the Department of Agribusiness Management with ACI values of 0.02, respectively. All locations on campus had very low IAP values with a total value of 0.86, indicating a very high level of air pollution. The location with the highest IAP value remained in the very high pollution category. The low IAP value is strongly suspected to be related to the high level of motor vehicle activity on campus and the suboptimal function of vegetation in reducing atmospheric pollutants. Keywords: Air Quality, Atmospheric Purity Index, Bioindicator, Lichen

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