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Kota semarang,
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INDONESIA
BIOMA
Published by Universitas PGRI Semarang
ISSN : 20865481     EISSN : 25499890     DOI : 10.26877
Core Subject : Education, Agriculture,
Agriculture, Biological Sciences & Forestry Education
Arjuna Subject : -
Articles 246 Documents
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Organoleptic Test of Eco-enzyme : Fermentation of Banana Peel Waste Juen Carla Warella
Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v12i1.14803

Abstract

Prevention of environmental damage can be done by recycling household waste both organic and inorganic. One of them is by making eco-enzymes made from banana peel waste which is found in the environment. This study aims to determine the level of respondents' liking based on organoleptic test variables. This research method is an experiment that includes making eco-enzymes, and organoleptic tests consisting of aroma, color and texture variables. Data analysis was carried out in a qualitative descriptive way by looking at the level of respondents' liking. The results showed that the average respondent chose a brown color with a percentage of 90%, yellow 7%, and colorless 3%. The scent variable respondents chose sour odor by 70% and other aromas 30%. While the texture of all respondents chose the composition of liquid eco-enzyme. This is due to the metabolic activity of microorganisms that result in the breakdown of substrates by bacteria resulting in changes in the aroma, color and texture of banana peels. The conclusion of this study is that the use of banana peel as the basic ingredient for making eco-enzyme affects the respondents' level of liking. Eco-enzyme can be used as a natural fertilizer for plant growth and can reduce household waste.
The Differences of Male and Female Students’s Problem Solving Ability in Environmental Change Topic Based on Education for Sustainable Development (ESD) Dewi Arum Budianti; Ary Susatyo Nugroho; Muhammad Syaipul Hayat
Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v12i1.16020

Abstract

This study aims to determine the differences between male and female students’s problem solving abilities in environmental change topic based on ESD. This study used pre-experimental method with one group pretest – post test design. This study located at MA Darul Muqorrobin with subjects  30 students of class X who selected using a purposive sampling technique. Generally, female students’s problem solving ability is higher than male student’s, with a final value of 77.7 for male students and 82.3 for female students. Male students have an average total score higher than female students on the problem understanding indicator, namely 7.7 for male students and 7.4 for female students. In the problem-solving design indicator, female students have a higher average total score than male students, namely 6.1 for male students and 6.5 for female students. Female students have an average total score higher than male students on the indicator of carrying out problem solving, namely 5.8 for male students and 6.4 for female students. In the indicators evaluating problem solving, female students have an average total score higher than male students, namely 5.3 for male students and 5.9 for female students. The high female students’s problem solving ability due to the structure of woman’s corpus collasum which thicker than the men’s. Testosterone hormone causes men prefer learning that hands-on. The preoptic region in the men’s hypothalamus is larger than women’s so men can understand problem better than women. The interpretation of the N-Gain value is sufficient, so the learning of environmental change topic based on ESD is effective to improve problem solving ability in both students.
The Effect of Discovery Learning on The Development and Strengthening of Understanding Basic Concepts in Biology Based on Students’ Experiences Susi Martini Sudibjo
Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v12i1.15868

Abstract

The Indonesian government is currently implementing two types of curriculums, namely the 2013 curriculum and the ‘Merdeka belajar’ curriculum which has been implemented for 2 years. Both of these differently named curriculums run together at different academic grades throughout Indonesia. Although they have different names, both curriculums have similarities in the application of their learning process, which is inquiry-based learning. Teachers can apply inquiry-based learning based on the guidelines specified in the curriculum or implement other inquiry-based learning methods, one of which is Wenning's levels of inquiry. This study aims to develop and strengthens the understanding of basic concepts in biology based on the student experience. This study investigates the impact of discovery learning on the development and strengthening of understanding basic concepts in biology, based on the experiences of students. The research aimed to explore the effectiveness of a discovery learning approach in enhancing students' comprehension and retention of fundamental biological principles. This study emphasizes the value of discovery learning as a powerful pedagogical approach for facilitating students' comprehension and mastery of basic concepts in biology. After carrying out the learning process with discovery learning steps, students get reinforcement of the basic concepts of the food digestive system and make it easier for students to carry out the next stage of inquiry.
The Effect of Air Pollution on The Stomata Characteristics Pigeon Orchid (Dendrobium crumenatum) Leaves, In the Tasikmalaya Nofi rahma Isma yanti; Purwati Kuswarini Suprapto; Diki Muhamad Chaidir
Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v12i1.15046

Abstract

This study aims to determine the effect of air pollution on the stomata characteristics in Pigeon Orchid (Dendrobium crumenatum) leaves in Tasikmalaya. This research is quantitative. The Samples were taken through survey method with purposive sampling technique in the Singaparna Bus Station as an exposed area with the highest air pollution, Sukaraja-Mangunreja street as an exposed area with the moderate air pollution, and Mount Galunggung as an exposed area with the the lowest air pollution. The characteristics of the stomata observed using an Optilab camera type Professional Model Series MTN001 which already has the Image Raster application and previously calibrated with an object glass micrometer at 400 x magnifications. The Data analysed quantitatively and descriptively using one way ANOVA test. The results showed that different levels of air pollution could affect the characteristics of the stomata. Stomata in areas with high air pollution have the highest stomata index and stomata density, namely 8.2% and 326.11/mm2, with the category of medium density and oval stomata shape. Stomata in areas with moderate air pollution have the lower stomata index and stomata density, namely 7.3% and 256.47/mm2, with the low-density category and round stomata shape. Meanwhile, stomata in areas with low air pollution have the lowest stomata index and stomata density, namely 5.7% and 256.47/mm2, which indicate the category of low density and the shape of the stomata is round.
Diversity Trees Riverside Rindu Hati as Science Teaching Materials Oriented Disaster Mitigation Pegi Gustari; Bhakti Karyadi; Sutarno Sutarno; Deni Parlindungan; Rendi Zulni Ekaputri; Ariefa Primair Yani; Mellyta Uliyandari
Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v12i1.15569

Abstract

The diversity of plants that exist on the banks of the Rindu Hati River is overgrown with plants, one of which is a tree-loving plant that has an important role in the river ecosystem and has the potential to mitigate disasters. This study aims to identify Disaster Mitigation Oriented Tree-Habitus Plants on the Rindu Hati Riverbanks which can be used as teaching materials in the form of Learning Unit Books (BUP) to increase understanding of natural science concepts and disaster awareness. Determining the research location using purposive sampling technique and inventory of tree plants using the quadratic method with an area measuring 20 mx 20 m at the tree level, 10 mx 10 m at the pole level, and 5 mx 5 m at the sapling level. Found 18 plant species from 13 families with a total of 137 individuals. These plants have disaster mitigation potential with a diversity index at the tree level reaching 2.674 in the medium category, the pole level reaching 2.432 in the medium category and the sapling level reaching 1.791 in the medium category. Based on these findings, a BUP can be made which can facilitate students in learning about information on tree-loving plants as disaster mitigation.
Daily Behavior of Red Tilapia (Oreochromis niloticus) Cultivated in Diferent Aeration and Filtration Nurizka Ayu Setiani; Kasiyati Kasiyati; Sunarno Sunarno; Muhammad Anwar Djaelani
Bioma : Jurnal Ilmiah Biologi Vol 12, No 1: April 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v12i1.12196

Abstract

Decreased water quality in red tilapia (Oreochromis niloticus) aquaculture indicates that low dissolved oxygen availability will affect fish behavior. One of the efforts to improve water quality is through the addition of aerators and filters. Aerators and filters increase the supply of dissolved oxygen and minimize feed waste in the aquaculture pond water. This study aims to analyze of different aeration and filtration or a combination of the daily behavior patterns of tilapia including eating behavior, aggressive behavior. The study was conducted for 1 month.This study used 24 red tilapia with a length of about 8-12 cm. The research design used in this study was a completely randomized design (CRD) with 4 treatment groups and 6 replications. The treatments were ANF group (use of single aerator without filter), AANF group (use of dual aerator without filter), AF group (use of single aerator with filter), and group AAF (use of dual aerator with filter). The data collected includes the daily behavior of red tilapia and water quality. Analysis of the daily eating, aggressive and comfortable behavior of red tilapia was carried out by observing video recordings and recording behavior recording techniques at intervals of 1-2 minutes based on duration and frequency. The results showed that the use of different aerators and filters or their combination had a significantly different effect (P<0,05) on the daily behavior of red tilapia. The conclusion of this study was the raising used of multiple aerators and filters can improve the quality of aquaculture water so that it has a positive impact on feeding, foraging, and schooling behavior in the growth phase of tilapia. Key words: quality water, aerator, filterd, aily behavior  
The Effect of Shallot Extract as Natural Plant Growth Regulator and Cuttings Materials on The Growth of Water Apple (Syzygium aqueum l.) Stem Cuttings Makrufah, Aliatul; Karno, Karno; Rosyida, Rosyida
Bioma : Jurnal Ilmiah Biologi Vol 12, No 2: October 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v12i2.15562

Abstract

The propagation of water apple by cuttings can meet the needs of the seeds in a short time and in large quantities. This study aimed to examine the effect of shallot extract as a natural plant growth regulator (PGR) and cutting material on the growth of water apple stem cuttings. The research was carried out from July to September 2022 at Greenhouse and the Physiology and Plant Breeding Laboratory, Faculty of Animal Husbandry and Agriculture, Diponegoro University. This study used a factorial Completely Randomized Design (CRD) with two factors. The first factor was the PGR concentration of shallots at four levels : K0 = 0%, K1 = 30%, K2 = 60%, and K3 = 90%. The second factor is the material of the water apple cuttings, with three levels: A1 = tip, A2 = middle, and A3 = base. The results of this study showed that the PGR concentration of shallots had significant effect on the age of shoots. The material of cuttings had a significant effect on age of shoots and the number of shoots. The natural growth regulator concentration of shallots 30% (v/v) in the shoots gave the best results for the growth of water apple cuttings
Echinoderms as a Bioindicator of Water Quality of Weda Waters, Central Halmahera District Juniartin, Juniartin; Tabaika, Rosita; Umagap, Wirda Az; Muna, Lintal
Bioma : Jurnal Ilmiah Biologi Vol 12, No 2: October 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v12i2.16606

Abstract

Echinoderms are deposit feeders that digest most of the sediment. Echinoderms are also good aquatic bioindicators, because Echinodermata are relatively calm or have low mobility, so they are highly influenced by environmental factors. This study aimed to determine the community structure of Echinoderms and their distribution relationship with several aquatic physico-chemical factors. Echinodermata sampling was carried out using the belt transect method using three stations. Data were collected in the form of the number of echinoderms in the transect and physico-chemical parameters of the waters including temperature, salinity, turbidity, pH, dissolved oxygen, ammonia, nitrite, and nitrate. From the results of research at three station points in the waters of Weda waters, 9 species of Echinodermata were found, namely Protoreaster nodosus, Linckia laevigata, Culcita novaeguineae, Diadema setosum, Diadema savigny, Echinometra mathaei, Tripneusteus gratilla, Holothuria atra, Holothuria edulis which were grouped into 3 classes, 4 orders, 6 families, and 7 genera with a total of 139 individuals. The diversity index of Echinodermata in Weda waters was classified as moderate with an average value of 1.05, the uniformity index was classified as moderate with an average value of 0.56, and the average dominance index value was 0.28 meaning that no species dominated
Adaptation of Four Strawberry Varieties at a Land Altitude of 900 Meters ASL with Different Shade Nugroho, Ary Susatyo; Sulistya Dewi, Endah Rita; Ulfah, Maria
Bioma : Jurnal Ilmiah Biologi Vol 12, No 2: October 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v12i2.16525

Abstract

Strawberries are herbaceous plants originating from sub-tropical regions. In Indonesia, which is a tropical climate, Strawberries can adapt well to the highlands of more than 1000 meters above sea level. At present, not much is known about strawberry varieties that are able to adapt to the plains below 1000 masl, so it is necessary to do research to find strawberry varieties that are able to adapt to the plains below 1000 masl. This research was conducted on agricultural land at an altitude of 900 masl in the Ngesrepbalong Village area, Limbangan District, Kendal Regency from September to October 2022. The research design used was a Completely Randomized Design with different types of shading. The treatment used is shading in the form of 50% paranet and 70% paranet. Data will be analyzed statistically with ANOVA and descriptive qualitative analysis. The results showed that the four strawberry varieties were able to adapt to an altitude of 900 meters above sea level with 50-70% paranet shade.
Optimizing the Function of Palembang City Forest as a Natural Laboratory Angraini, Erni; Auliandari, Lia; Dewiyeti, Susi
Bioma : Jurnal Ilmiah Biologi Vol 12, No 2: October 2023
Publisher : Universitas PGRI Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26877/bioma.v12i2.16531

Abstract

Urban forest is one of the public open spaces with a minimum area of 2,500 m2(0.25 hectares) which has various functions, both ecological, social and cultural, economic, and aesthetic functions. Each urban forest has its own potential and function. The urban forest in Palembang has not been used optimally in accordance with its function, especially as a learning space (natural laboratory). This research aims to optimize the function of urban forests in Palembang so that they can be used as natural laboratories in Plant Ecology courses. The method in this study uses a qualitative approach with applied research. Data collection techniques include (triangulation techniques), including: observation on 6 urban forests in Palembang: Punti Kayu Natural Tourism Park Forest, Bukit Siguntang Forest, Bumi Perkemahan Pramuka Gandus City Forest, Forest Area of Sri Mulyono Herlambang Palembang Air Base, OPI Retention Pool Area, and Jakabaring Stadium Area; Interview; and documentation. Based on the results of field observations and interviews with the six urban forests in Palembang, they have various functions including ecological, social and cultural functions, as well as aesthetics. Urban forests that have low biodiversity are the Gandus Scout Campground City Forest and the OPI Retention Pond Area Forest. The Urban Forest of the OPI Retention Pool Area and the City Forest of the Gandus Scout Camping Ground have no potential to be used as natural laboratories, especially in the Ecology course on vegetation analysis material. There needs to be good cooperation from the government, the industrial world, and the community to optimize the function of urban forests.

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