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All Journal Jurnal Biosilampari: Jurnal Biologi Proceeding Biology Education Conference
Dewi Jumiarni
Pendidikan Biologi Universitas Bengkulu
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Materials Science & Nanotechnology Medicine & Pharmacology Public Health

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STUDI KEANEKARAGAMAN MIKROALGA DI SUNGAI DAN DANAU BENGKULU SEBAGAI BIOINDIKATOR PERAIRAN Oktaria Silviani; Bhakti Karyadi; Sipriyadi Sipriyadi; Dewi Jumiarni; Abdul Rahman Singkam
Jurnal Biosilampari : Jurnal Biologi Vol 4 No 2 (2022): Biosilampari
Publisher : LP4MK STKIP PGRI Lubuklinggau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31540/biosilampari.v4i2.1614

Abstract

This exploratory study aims to analyze the water quality of Selagan River and Tes Lake based on diversity of microalgae. Sampling was done by systematic purposive sampling. Results of study found 38 species (8 classes) of microalgae in Selagan River and 48 species (9 classes) in Tes Lake. The bundance of microalgae at the upstream, middle, and downstream stations of Selagan River were 3714 ind/ml, 105 ind/ml, and 315 ind/ml, with diversity index 0.25; 1.93; and 1.72. The microalgae dominance index in river is 0.95; 0.58; and 0.75 low to high criteria. The evenness index value for each station is 0.09; 0.78; and 0.63 low to high categories. Meanwhile, abundance of microalgae in Tes Lake at the inlet, middle, and outlet stations were 192 ind/ml, 204 ind/ml, and 200 ind/ml, with diversity index of 2.70; 2.55; and 2.05. The microalgae dominance index was 0.10; 0.28; and 0.2 low category. The evenness index value for each station is 0.78; 0.75; 0.64 high category. Conclusion, condition of Selagan River at the upstream station is classified as heavily polluted, the middle and downstream stations are classified as clean. Meanwhile, condition of Tes Lake is clean and shows normal tolerance range for microalgae life.
Development of Electronic Student Worksheets Based on Research of Potential Annona muricata L. as Antibacterial in Biology Learning Kurnia Widiyani; Dewi Jumiarni; Bhakti Karyadi; Yennita Yennita; Sri Irawati
Proceeding Biology Education Conference: Biology, Science, Enviromental, and Learning Vol 18, No 1 (2021): Proceeding Biology Education Conference
Publisher : Universitas Sebelas Maret

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This study aims to produce E-LKPD teaching materials for class X bacteria based on the Inhibitory Test of Soursop Leaf Extract (Annona muricata L) against Escherichia coli bacteria, determine the feasibility of E-LKPD and determine the student response test on bacterial material. This type of research is research and development using the Borg and Gall model (1989) with stages of potential and problems, data collection, product design, design validation, and design revision. The research was conducted at the University of Bengkulu and the feasibility test was carried out by validators of media experts, material experts, and practitioner experts and continued with a response test conducted by 12 students at SMAN 8 Bengkulu City, MIPA class. The teaching materials that have been compiled and developed get a validation value from material experts 90,62% with very feasible criteria, media experts 96,42% with very feasible criteria, and 100% practitioner experts with very feasible criteria and a response test of 91,51 % with very good criteria. E-LKPD can be used to test the use of biology teaching materials for class X SMA for bacteria.
Co-Authors Abdul Rahman Singkam Bhakti Karyadi Bhakti Karyadi Kurnia Widiyani Oktaria Silviani Sipriyadi Sri Irawati Yennita Yennita