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Bioscientist : Jurnal Ilmiah Biologi
Published by Universitas Pendidikan Mandalika
ISSN : 23385006     EISSN : 26544571     DOI : https://doi.org/10.33394
Core Subject : Science, Education, Agriculture, Social,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Education Immunology & microbiology Social Sciences
Bioscientist : Jurnal Ilmiah Biologi (BJIB), receiving and publishing article in the form of research (scientific article) in the field of biology education and utilization of biological research in learning. Moreover, this journal bridges the gap between research and practice, providing information, ideas and opinion, in addition to critical examinations of biology research and teaching. Through the coverage of policy and curriculum developments, the latest results of research into the teaching, learning and assessment of biology are brought to the fore. Special emphasize are as follow: 1. Research on Learning Biology (Biology Learning Materials at All Education Levels). 2. Pure Research of Biology Developed or Studied to the Sources, Materials, or Instructional Media Biology (Biology Learning Materials at All Education Levels and Application in Society). 3. Curriculum of Biology Education at all Education Levels. 4. Class Action Research (CAR) and Lesson Study in Biology. 5. Other Qualitative Research of Biology Education. 6. The School Management and Biology/Science Laboratory Management. 7. Biology Learning Evaluation. 8. Teacher Professional Issues/Trends in Biology Education. 9. Another Study for the Scope of Biology Education. 10. Research on Environmental Education.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 1,428 Documents
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Kadar Silika (SiO2) terhadap Kelimpahan Diatom Bentik di Sungai Jamblang Kabupaten Cirebon Haque, Maharani Zahiratun; Afiati, Norma; Jati, Oktavianto Eko
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i1.9192

Abstract

Jamblang River is a concern because it has a very turbid water color due to natural stone mining activities processed by the natural stone industry. One of the natural stones produced at the location of the Jamblang river is andesite rock which has a constituent component is silica. Silica is the second most abundant element in the Earth's crust after oxygen. Silica usually comes from minerals and rocks that dissolve in water. In fresh water, quartz silica is less soluble than amorphous silica. Enrichment of nutrients with silica favors the growth of diatoms, since diatoms need silica for cell wall biogenesis. The amount of silica present in water is not immediately absorbed by diatoms. The sampling method used is the purposive sampling method. The sampling locations set are 4 locations. The most interesting location is location 2 because there are 38 natural stone industries scattered around the location. There is also a simple linear regression statistical test on SPSS which shows the influence of silica levels on the abundance of benthic diatoms in the Jamblang river. The value of Sig. 0.000 shows that there is an influence of silica on plankton abundance in water because the value is < 0.05. The lowest silica content obtained at location 2 is also supported by the least abundance of diatoms found. The low abundance of diatoms is thought to be caused by high TSS numbers, low observed brightness, and low DO numbers.
Distribusi Spasial Lamun di Perairan Sekotong Barat-TWP Gita Nada Lombok Barat Menggunakan Citra Landsat 8 OLI Sholihin, Arfian; Virgota, Arben; Astuti, Sri Puji; Farista, Baiq; Sukiman, Sukiman
Bioscientist : Jurnal Ilmiah Biologi Vol. 11 No. 2 (2023): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i2.9225

Abstract

West Sekotong Village is one of the coastal water areas included in the Gita Nada Aquatic Tourism Park (TWP) area which has a seagrass habitat. Seagrass beds in West Sekotong are threatened due to increased tourism and community activities. This research aims to determine the distribution and extent of seagrass beds on the coast of West Sekotong-TWP Gita Nada. This research uses a remote sensing approach through interpretation of Landsat 8 OLI imagery. This research consists of 2 steps, namely image data processing and supporting data. Image data processing includes several stages, namely image data collection, geometric correction, radiometric correction, image cutting, image composite, image data sharpening, image data interpretation, accuracy testing, area measurement, and final layout. Supporting data was obtained by searching related literature, interviews and surveys of activities that have the potential to have an impact on seagrass ecosystems. The research results show that the distribution of seagrass in West Sekotong-TWP Gita Nada covers the coast of the large island (mainland) and the coast of small islands. The distribution of seagrass on the mainland is found on the coasts of Medang, Tanjung Kelor, Batu Kijuk, Tawun, Labu, Kelapa, Pandanan, Gili Genting, Labuan Petung, Temeran, and Gawah Pudak. In the coastal areas of small islands, seagrass is found on Gili Sudak, Gili Tangkong, Gili Nanggu, Gili Poh, and Gili Lontar. The total area of seagrass beds in West Sekotong is around 144.68 ha. On the mainland coast the area is 118.96 ha (82.2%) and on small islands the area is around 25.72 ha (17.8%). The distribution of seagrass in West Sekotong is influenced by many factors, among which those observed in this research are the type of substrate, the presence of river estuaries, and the use of land and coastal waters.
Analisis Vegetasi Tumbuhan Tingkat Pohon di Kawasan Geopark Silokek Kabupaten Sijunjung Pertiwi, Vera; Chairul, Chairul
Bioscientist : Jurnal Ilmiah Biologi Vol. 12 No. 1 (2024): June
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v12i1.9231

Abstract

Silokek Geopark Area is a geopark area that is being appointed into a national geopark consisting of 25 geodiversity, 12 biodiversity, and 17 cultural diversity sites. The objective of the study is to determine the composition and structure of vegetation of trees in the Silokek Geopark area, Sijunjung Regency. This research has been conducted from September to December 2022 by using the transect method. The plot was made of 10 plots with a size of 10x10 meters for vegetation that is placed alternately on both sides of the transect. Identification is carried out at the Andalas University Herbarium. Based on the research results, 15 families, 19 genera, 22 species, and 30 individuals were found. The co-dominant families are Moraceae (20%), Ebenaceae (16.67%), and Euphorbiaceae (13.33%). The highest important value index of Ficus Stricta was obtained at 57.86% and the lowest in the Nephelium Lappaceum at 7.36%. The plant diversity index in this area is classified as moderate (H '= 2.85). It is recommended that the government to controlling the diversity of plants in the Silokek Geopark area, considering that this area is a tourist area.
Pengaruh Penambahan Minyak Jelantah dalam Pakan Komersil terhadap Performa Burung Puyuh Jantan Pedaging Coturnix coturnix japonica Fase Akhir (Finisher) Oktaviana, Dina; Supriadi, Supriadi; Mashur, Mashur
Bioscientist : Jurnal Ilmiah Biologi Vol. 11 No. 2 (2023): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i2.9237

Abstract

Increasing the production potential of quail requires better rearing management, especially in the selection of feed ingredients. A feed ingredient that has great potential to be used as a source of energy and fat is used cooking oil. Used cooking oil or waste cooking oil is waste oil that comes from various types of cooking oil, such as corn oil, vegetable oil, ghee, and so on. This oil is used oil for general household use, and can be reused for culinary purposes or even as an alternative feed ingredient for livestock. The aim of this research was to determine the performance of male Coturnix coturnix japonica broiler quail in the final phase (finisher) which received additional feed ingredients in their rations in the form of used cooking oil. This research used 5 different types of feed treatments with 4 repetitions, so that 20 male quail were distributed in 20 experimental unit cages. The five types of treatment are P0 = 98% basal feed, 2% filler, 0% used cooking oil, P1 = 98% basal feed, 1.5% filler, 0.5% used cooking oil, P2 = 98% basal feed, 1% filler , 1% used cooking oil, P3 = 98% basal feed, 0.5% filler, 1.5% used cooking oil, and P4 = 98% basal feed, 0% filler, 2% used cooking oil. The parameters tested in this study were body weight gain, slaughter weight, feed consumption and feed conversion (FCR). All data obtained were analyzed statistically using a complete random design test with a unidirectional pattern, as well as variance ANOVA via SPSS, and if there were differences, they were further tested with the Duncan test. The results of statistical analysis showed that the addition of used cooking oil to commercial feed for male quail had a significant effect on body weight gain and feed consumption P > 0.05, but had no significant effect on slaughter weight and feed conversion value (FCR).
Modifikasi Pewarna Alami Ekstrak Etanol Sappan Lignum pada Pewarnaan Soil Transmitted Helminth Pengganti Eosin 2% Munawaroh, Siti; Shofi, Muh.
Bioscientist : Jurnal Ilmiah Biologi Vol. 11 No. 2 (2023): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i2.9245

Abstract

Worms are a disease that attacks humans in tropical areas. The cause of worm infections in the community is from the Soil Transmitted Helminth (STH) worm group, but the government pays little attention to this. In the process of identifying worm eggs, 2% eosin has been used, which apparently produces waste that is difficult to decompose. Sappan lignum is a natural dye because it contains brizilin which can give a red color, so it can be used as a worm egg dye replacing 2% eosin. This study aims to test whether sappan lignum extract can be used as a dye in fecal examination to detect SHT infections. This research is descriptive research. Examination of worm eggs using the direct feces method was carried out using sappan lignum extract dye with 96% ethanol and 2% eosin as a positive control. This research shows that sappan lignum ethanol extract at a coloring ratio of 1:3 is the best dye compared to other ratios and can be used as a substitute for eosin dye. The conclusion of this research is that sappan lignum ethanol extract can be used as a natural dye in identifying worm eggs.
Pengembangan Instrumen Penilaian Berbantuan Wordwall pada Materi Sistem Koordinasi untuk Siswa Kelas XI IPA Qurniawan, Muhammad Fani; Nurmawati, Ira; Sahlan, Mohammad
Bioscientist : Jurnal Ilmiah Biologi Vol. 11 No. 2 (2023): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i2.9259

Abstract

This research is a type of research and development (Research and Development or R & D) using the ADDIE Branch development model. The aim of this research is to produce a product in the form of a wordwall-assisted assessment instrument on coordination system material for class XI Science students at MA Negeri 2 Jember. The assessment instrument developed contains multiple choice questions (multiple choice) type Higher Order Thinking Skills (HOTS) questions on the coordination system material. The research results show that the validation obtained from experts has been matched with the validation score criteria, material expert validation results are 88.12% (very valid), evaluation expert validation results are 95.55% (very valid), language expert validation results are 86.66 % (very valid), and the results of practitioner validation by teachers were 94.72% (very valid). Meanwhile, the results of student responses were: 1) small scale trial stage 83.17% (very interesting); and 2) large-scale trial phase 85.1% (very interesting). The results of the question item validation test were: 1) 20 of the 25 question items were declared valid with a value of rcount > rtable; 2) the overall reliability value of the questions is 0.792 (high); 3) the level of difficulty of the items in the easy, medium and difficult categories; and 4) the distinguishing power of items in the very good and quite good categories. The wordwall-assisted assessment instrument on the coordination system material was proven to be effective for class 05). Based on the results of this research, it can be concluded that the wordwall-assisted assessment instrument product is categorized as very valid, very practical and effective.
Perbandingan Struktur Komunitas Cacing Tanah Megadrilli pada Ekosistem Alami dan Ekosistem Buatan Jody, Regina; Darmi, Darmi; Rizwar, Rizwar; Jarulis, Jarulis; Wibowo, Risky Hadi
Bioscientist : Jurnal Ilmiah Biologi Vol. 11 No. 2 (2023): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i2.9262

Abstract

Earthworms are an important component of soil ecosystems. The presence of earthworms in a habitat can enhance the quality of the soil, both in its physical, chemical, and biological properties. This research has the purpose to analyze the comparison of earthworm density found in natural ecosystems and artificial ecosystems. The determination of location points is done using the Cluster Sampling method, which includes both natural and artificial ecosystems. Sampling is conducted using the line transect method along a 100-meter length in 20 plots. The earthworm collection method involves the use of square and hand sorting methods. Data analysis includes density values, frequency, diversity index, and the Morisita index, as well as statistical analysis using an independent sample T-Test to determine the significance of the difference in earthworm abundance between the two locations. Five species of megadrillic earthworms were identified, classified into two ecological categories: epigeic and endogeic. In the natural ecosystem, there were five species, namely Pheretima capensis (epigeic), P. corethururus (endogeic), Pheretima sp.1 (epigeic), Megascolex sp. (endogeic), and Pheretima sp.2 (epigeic). Meanwhile, in the artificial ecosystem, three species were found, which are P. capensis (epigeic), P. corethururus (endogeic), and Pheretima sp.2 (epigeic). The density of megadrillic earthworms in the natural ecosystem (567.8 individuals/m2) is significantly higher compared to the artificial ecosystem (242.5 individuals/m2). The relative frequency of earthworms in the natural ecosystem is divided into 3 categories: Rare (Assesory), Common (Constant), and Very Common (Absolute), whereas in the artificial ecosystem, there are 2 categories: Common (Constant) and Very Common (Absolute). The diversity index of earthworms in the natural ecosystem tends to be higher (H' = 1.236) than in the artificial ecosystem (H' = 0.885). The distribution pattern of megadrillic earthworms in the natural ecosystem is clustered, while in the artificial ecosystem, it is random.
Pertumbuhan Tanaman Tomat (Solanum lycopersicum) dengan Media Abu Terbang (Fly Ash) dan Abu Dasar (Bottom Ash) Andriani, Vivin; Ajiningrum, Purity Sabila; Ngadiani, Ngadiani
Bioscientist : Jurnal Ilmiah Biologi Vol. 11 No. 2 (2023): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i2.9272

Abstract

The use of fly ash and bottom ash as a plant medium can reduce waste from burning coal. The ash waste contains micro and macro nutrients that plants can use for growth. The ash contains the elements Na, K, Ca, Mg, Cu, Zn, and MN. This research aims to determine the effect of fly ash, bottom ash, and their combination on the growth of tomato plants (Solanum lycopersicum). This research used RAL (Completely Randomized Design) with 12 factors and 3 replications, namely k0 (negative control, not given anything), k1 (positive control, given urea fertilizer), a1 (400 g/polybag fly ash), a2 (800 g/polybag fly ash), a3 (1200 g/polybag fly ash), b1 (400 g/polybag base ash), b2 (800 g/polybag base ash), b3 (1200 g/polybag base ash), ab1 (200 g/polybag fly ash + 400 g/polybag fly ash), ab2 (400 g/polybag fly ash + 200 g/polybag fly ash), ab3 (600 g/polybag fly ash + 400 g/polybag fly ash), and ab4 (400 g/polybag fly ash + 600 g/polybag fly ash). The observation variable is the growth of tomato plants, including plant height, number of leaves, number of branches, stem diameter and wet weight. The results showed that there was an effect of using fly ash and bottom ash as a planting medium on the growth of tomato plants for 90 DAP in the AB4 treatment. The combination of 400 g/polybag fly ash + 600 g/polybag fly ash gave good results in plant height, number of leaves, number of branches, and fresh weight of tomato plants, but in terms of branch diameter, NPK treatment gave good results.
Fitoremediasi Limbah Cair Tahu Menggunakan Tumbuhan Eceng Gondok (Eichhornia crassipes) dan Arang Kayu Damayanti, Alinda; Binawati, Diah Karunia
Bioscientist : Jurnal Ilmiah Biologi Vol. 11 No. 2 (2023): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i2.9283

Abstract

Tofu liquid waste produces toxic compounds that can pollute the environment. Pollution due to tofu liquid waste causes the aquatic environment to become dirty and smelly. Phytoremediation is considered an innovative, economical and relatively safe technology for the environment, because phytoremediation is an effort to use plants to decontaminate waste. Water hyacinth is considered a weed in waters, but has the ability to absorb organic substances, inorganic substances and heavy metals which are pollutants. Wood charcoal can be used as a pollutant absorber in water purification systems. This research aims to improve the quality of tofu liquid waste with a phytoremediation process using water hyacinth plants and wood charcoal with TDS, pH and COD test parameters. This research used 18 experimental tanks with 3 treatments and 6 replications. P1 (100% EG), P2 (75% EG + 25% AK), P3 (50% EG + 50% AK). In this research, the phytoremediation process using water hyacinth plants and wood charcoal was able to improve the quality of tofu liquid waste. Based on the results of the Two Way ANOVA test, it is known that phytoremediation treatment has a significant effect on the test parameters with a significance level of 5%. The results of the phytoremediation study showed TDS levels from 610 mg/L to 589 mg/L; pH from 5.1 to 7.17; and COD from 3000 mg/L to 115.83 mg/L.
Kelayakan LKPD Berbasis Inkuiri Terbimbing untuk Melatihkan Keterampilan Proses Sains pada Materi Sistem Organisasi Kehidupan Sari, Dwi Nilam; Ningsih, Kurnia; Wahyuni, Eko Sri
Bioscientist : Jurnal Ilmiah Biologi Vol. 11 No. 2 (2023): December
Publisher : Department of Biology Education, FSTT, Mandalika University of Education, Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33394/bioscientist.v11i2.9286

Abstract

This research aims to determine the feasibility of guided inquiry-based LKPD for practicing science process skills in class VII life organization system material at SMP Negeri 4 Sungai Raya. The method used in this research is research and development (R&D) with the Borg & Gall development model which is carried out through six stages, namely potential and problems, data collection, product design, design validation, design revision, and product testing. The research subjects were 10 class VII students at SMP Negeri 4 Sungai Raya with 3 high ability students, 4 medium ability students and 3 low ability students. The instruments used were validation sheets and science process skills assessment sheets which were validated by 5 validators. The results of the validation analysis from the aspects of appropriateness of content, language, presentation and graphics using Aiken's V obtained an average value of 0.91 which was declared valid, and an ICC reliability value of 0.82 was obtained in the good category. The results of the analysis of students' science process skills from the aspects of observing, asking, hypothesizing, grouping, applying concepts, and concluding obtained an average score of 88.33% in the very good category. This can be concluded that the LKPD is suitable for use as teaching material.

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