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Journal : Biocaster : Jurnal Kajian Biologi

Struktur Komunitas Mangrove di Pesisir Pantai Cemara Kabupaten Lombok Barat dalam Upaya Penyusunan Modul Ekologi Utami, Fidiati; Utami, Septiana Dwi; Safnowandi, Safnowandi
Biocaster : Jurnal Kajian Biologi Vol. 3 No. 4 (2023): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v3i4.213

Abstract

The mangrove habitat found on the coast of Cemara Beach, West Lombok Regency is a river that meets a forest area that merges with the sea. The objectives of this research include: 1) identifying the types of plants that make up the mangrove forest on the Cemara Coast; 2) analyze the abundance of mangroves on the Cemara Coast; 3) analyze the diversity and evenness index of mangroves on the Cemara Coast; 4) reveal the population of species that dominate the mangrove community on the Cemara Coast; 5) analyze differences in mangrove abundance on sandy and muddy substrates on the Cemara Coast; 6) analyze differences in mangrove species diversity on sandy and muddy substrates on the Cemara Coast; 7) analyze the differences in mangrove dominance on sandy and muddy substrates on the Cemara Coast; and 8) develop research results on mangrove community structure as material in preparing ecological modules. This type of research is comparative descriptive. The design in this research uses a plot method with a total of 20 plots, namely 10 plots on a sandy substrate and 10 plots on a muddy substrate with 1 plot measuring 10 x 10 m. Development research using the 4D model from Thiagarajan et al. (1974) which was modified into 3P (Definition, Design and Development). The results of the research showed that there were 5 species of mangroves found on sandy substrates, while there were 4 species on muddy substrates. The abundance of mangrove plants on sandy substrates is 292 species of Sonneratia alba, while on muddy substrates there are 219 species of Rhizophora mucronata. The diversity index for sandy substrates and muddy substrates is 0, so the diversity index is categorized as low species diversity because H'<1. The evenness of mangrove plants is the uneven distribution of organisms in the community. The species that dominates on sandy substrates is Sonneratia alba, while on muddy substrates it is Rhizophora mucronata. The important value index for the level of poles and trees as well as the level of seedlings and saplings on sandy substrates is included in the medium category, because the important value index value ranges between 101% - 200% which is categorized as medium. Based on the results of the analysis of teaching materials, analysis of expert validation results and student readability tests (small group tests), the average achievement level reached 81.15% with very good qualifications. Thus, the plant ecology module teaching materials are suitable for use without revision.
Identifikasi Jenis Zooplankton di Sepanjang Perairan Sungai Jangkok Kota Mataram Safnowandi, Safnowandi
Biocaster : Jurnal Kajian Biologi Vol. 4 No. 2 (2024): April
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v4i2.255

Abstract

Zooplankton is animal plankton, which plays a role as primary consumers in aquatic ecosystems and as a link in the aquatic food chain. The Jangkok River is one of the large rivers on Lombok Island. This river flows from the western slopes of Mount Rinjani through the Narmada area of ​​West Lombok Regency to downstream at Ampenan Beach. Many river flows provide functions and benefits for the continuity of life of the surrounding community. This research aims to identify zooplankton in the waters of the Jangkok River, Mataram City. This type of research is exploratory descriptive. Research procedures include taking zooplankton water samples horizontally and vertically. Data collection techniques use observation and documentation techniques. The data analysis technique uses the zooplankton abundance index. The research results show that there are 4 types of Zooplankton consisting of 4 species that have been discovered including Harpacticoid copepod, Parathemisto abyssorum, Cyclops bicuspidatus and Diaptomus sp.
Validitas Petunjuk Praktikum Ekologi: Meningkatkan Kualitas Pembelajaran Berbasis Lingkungan Safnowandi, Safnowandi
Biocaster : Jurnal Kajian Biologi Vol. 4 No. 4 (2024): October
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v4i4.324

Abstract

This research aims to determine the validity of ecology practicum instructions. This type of research is development research using the 4D model (Define, Design, Develop, and Disseminate). However, this research modified it to 3D, namely Define, Design, and Develop. The research instrument used was a validation sheet. The data analysis technique used is the percentage technique. The research showed that the validation results from content/material experts were 77%, in terms of appearance it was 75%, and in terms of language it was 87%. Thus, it can be concluded that the ecology practicum instructions are declared valid and do not need to be revised.
Pemanfaatan Vitamin C Alami sebagai Antioksidan pada Tubuh Manusia Safnowandi, Safnowandi
Biocaster : Jurnal Kajian Biologi Vol. 2 No. 1 (2022): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (493.043 KB) | DOI: 10.36312/bjkb.v2i1.43

Abstract

Vitamin C is an organic substance needed by the human body in small amounts, to maintain metabolic functions and also acts as an antioxidant for the human body, to ward off free radicals. The design of this research is a literature review of research articles collected by means of computer searches through google schoolar and repository. The search step is to enter the keyword Natural Vitamin C Antioxidant, Dosage and source of intake of vitamin C. Vitamin C or L-ascorbic acid is a water-soluble antioxidant (Aqueous Antioxidant). Vitamin C is part of the body's defense system against reactive oxygen compounds in plasma and cells. Vitamin C deficiency and excess will have an effect on our health. Lemons contain about 85 milligrams of vitamin C, guava has a high vitamin C content of 86 mg/100g, 1 pineapple or a plate of longan fruit (about 100 grams) contains about 80 milligrams of vitamin C, and in a bowl of spinach (about 30 grams) contains 8.5 mg of vitamin C.
Pengaruh Metode Mind Map dengan Media Komik terhadap Minat Baca dan Hasil Belajar Kognitif Siswa Pramana, Ida Bagus Wika; Fitriani, Herdiyana; Safnowandi, Safnowandi
Biocaster : Jurnal Kajian Biologi Vol. 2 No. 2 (2022): April
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (574.141 KB) | DOI: 10.36312/bjkb.v2i2.68

Abstract

The main problem in learning in formal education (schools) today is the low quality of student learning. One of the factors is the teacher's ability to manage, develop methods and select learning media. In this case the researcher tried to use the mind map method with comic media. This study aims to determine the effect of the mind map method with comic media on reading interest and cognitive learning outcomes of class VIII students in biology science subjects at SMPN 10 Mataram. This type of research is a quasi-experimental. The population in this study were all eighth grade students of SMPN 10 Mataram. This sample was taken using a simple random sampling technique, namely class VIII F as the experimental class and class VIII G as the control class. Data collection in this study was taken by giving pre-test and post-test to the sample class students. Data collection techniques using a reading interest questionnaire and objective tests that have been tested for validity and reliability. Based on the results of the study showed that the students' reading interest obtained an average of 60.54 for the experimental class with a percentage of 75.67%, while the control class was 51.79 with a percentage of 64.74% which indicated that students were included in the interested category, indicating that the reading interest of students who using the mind map method with comic media is higher than the reading interest of students who use conventional methods. Based on the results of the study, it was shown that the pre-test data obtained an average value of 51.03 for the experimental class and 51.55 for the control class. The post-test results showed an average of 77.93 for the experimental class and 68.96 for the control group. The post-test data of the sample class students were analyzed using t-test. Based on the results of data analysis using t-test obtained t count > t table, which is 4.33 > 2.00 at an error level of 5%. This indicates that the mind map method with comic media has an effect on cognitive learning outcomes for class VIII students in biology science subjects. at SMPN 10 Mataram.
Pengaruh Model Pembelajaran Inkuiri Terbimbing (Guided Inquiry) Berbasis Saintifik terhadap Kemampuan Berpikir Kritis Siswa Fitria, Yulia; Safnowandi, Safnowandi; Fajri, Siti Rabiatul
Biocaster : Jurnal Kajian Biologi Vol. 2 No. 3 (2022): July
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (402.221 KB) | DOI: 10.36312/bjkb.v2i3.97

Abstract

This study aims to determine the effect of the scientific-based guided inquiry learning model on the critical thinking skills of class X students. In this study there are 2 variables, namely the independent variable and the dependent variable, the independent variable is the guided inquiry learning model (Guided Inquiry). the dependent variable is students' critical thinking ability. The population of this study were students of class X MIA at MA Al-Ishlahul Ittihad Jabon Tentan Bagu Village, Pringgarata District, Central Lombok Regency. The selected sample is class X MIA with a total of 20 students. This study applies a quantitative approach with the Quasi Experiment method with a one group pre-test post-test design. The instrument used in the study was a written test in the form of 10 essay questions for the Pre-test 5 test questions and Post-test 5 test questions. The test questions were used to measure students' critical thinking skills on earthworm material. Based on the data analysis, the average pre-test was 63.75 which was included in the non-critical category and the post-test average was 81.75 which was included in the critical category. The data analysis technique in this study used a paired t test with the help of SPSS. Based on the results of the t-test, it was found that there was a significant difference between the results of the Pre-test and the Post-test. The results of the calculation of students' critical thinking ability data show that the value of sig = 0.000 0.05 then the HO hypothesis is rejected and Ha is accepted. Thus, it can be concluded that there is an influence of the guided inquiry learning model on the critical thinking skills of class X MIA students at MA Al-Ishlahul Ittihad Jabon Tentan Bagu Village, Pringgarata District, Central Lombok Regency.
Pemanfaatan Bintil Akar Kacang Tanah (Arachis hypogaea) sebagai Pupuk Biologi untuk Pertumbuhan Bibit Cabai Rawit (Capsicum frutescens) dalam Upaya Penyusunan Petunjuk Praktikum Fisiologi Tumbuhan II Andana, Dwi Sri; Jannah, Husnul; Safnowandi, Safnowandi
Biocaster : Jurnal Kajian Biologi Vol. 3 No. 1 (2023): January
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (864.634 KB) | DOI: 10.36312/bjkb.v3i1.145

Abstract

Peanut root nodules can be used as a biological fertilizer. Root nodules are roots containing rhizobium bacteria as nitrogen enhancers, which can be used as biological fertilizers. Nitrogen is an element for forming important compounds in cells, including proteins, DNA and RNA. Cayenne pepper production is low due to lack of nutrients, one of which is nitrogen. To meet this need, researchers use peanut root nodules. The aim of this study was to determine the utilization of peanut root nodules (Arachis hypogaea), as a biological fertilizer for the growth of cayenne pepper (Capsicum frutescens), in an effort to prepare plant physiology practical instructions II. This research is included in pure experimental research and development research. The design used was Completely Randomized Design (CRD). Data collection techniques in this study were through observation and documentation methods, then data analysis used One Way Anova. The population consisted of 5 treatments, namely: 1) P.O (Control with 100% soil); 2) P.1 (3 grams of peanut root nodule fertilizer); 3) P.2 (2.5 grams of peanut root nodule fertilizer); 4) P.3 (2 grams of peanut root nodule fertilizer); and 5) P.4 (1.5 grams of peanut root nodule fertilizer), and repeated 4 times. Parameters observed in this study were plant height, number of leaves, leaf length, leaf width, stem diameter, stem length, and total leaf area. The results of the research on plant height parameters showed that the Fvalue < Ftable 0.05, that is, 1.827 < 3.06, the parameter for the number of leaves with the Fcount < Ftable 0.05, namely 1.500 < 3.06, the leaf length parameter with Fcount < Ftable 0.05, that is, 0.478 < 3.06, the leaf width parameter with a calculated Fvalue < Ftable 0.05, that is, 0.053 < 3.06, the stem segment length parameter with a calculated Fvalue < Ftable 0.05, namely , 0.660 < 3.06, parameter of stem diameter with calculated Fvalue < Ftable 0.05 ie, 0.489 < 3.06, and total leaf area parameter with calculated Fvalue < Ftable 0.05 ie 0.489 < 3.06. Based on the results of the study, all observation parameters did not have a significant effect (non-significant). In the development research, 2 expert validators were used, namely teaching material experts, material expert in plant physiology II and the readability test by 15 students. From the results of data analysis of teaching materials experts, the average value was 3.56, and material experts 3.53. As well as the readability test by 15 students an average of 2.98. So that the practical instructions for plant physiology II are feasible to use without revision.
Pola Distribusi Siput Air (Gastropoda) sebagai Bioindikator Pencemaran Air di Sungai Unus Kota Mataram dalam Upaya Pengembangan Modul Ekologi Sofiana, Laily; Nofisulastri, Nofisulastri; Safnowandi, Safnowandi
Biocaster : Jurnal Kajian Biologi Vol. 3 No. 3 (2023): July
Publisher : Lembaga Pendidikan, Penelitian, dan Pengabdian Kamandanu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36312/biocaster.v3i3.191

Abstract

The results of preliminary observations on the Unus River in Mataram City show that the gastropods in each village which the river flows through have different characters according to the activities around the river and the level of river water pollution. Pollution and the high activity of residents who use the river as a residential area, indications of pollution in the Unus River can be seen from the condition of the river estuary which is quite dirty, so great ecological pressure is occurring in the river, it is necessary to conduct research on the community structure of macrozoobenthos, especially water snails as a bioindicator of water quality in the Unus River, Mataram City in an effort to develop an ecological module. The aims of this study were: 1) to find out how the pattern of distribution of gastropods in the Unus River, Mataram City; 2) identify the types of gastropods found in the Unus River, Mataram City; 3) reveal the population of Gastropod dominance that dominates the Unus River in Mataram City; 4) analyze the population density of Gastropods in the Unus River, Mataram City; 5) analyzing the diversity of gastropod species in the Unus River, Mataram City; and 6) developing research results on distribution patterns of gastropods as bioindicators of water pollution in the Unus River, Mataram City in an effort to develop an ecological module. This type of research is descriptive exploratory and developmental research for the development of ecological modules. The sampling technique used was purposive sampling technique and the length of the transect used was 30 m. Based on the results of the study, the highest morbidity index was the Thiara requenti species with a value of 0.253 which was in the regular category. Found 12 species from 5 families namely; Pomacea canaliculata, Mellanoides plicaria, Apella demisum, Mellanoides puncata, Taribea granifera, Goniobasis virginica, Fillopaludina javanica, Thiara scabra, Thiara sp, Thiara requenti, and Mellanoides tuberculata. The highest Gastropod dominance population was owned by the Mellanoides plicaria species with a total of 0.48. The highest population density is occupied by the species Thiara requenti with a value of 7.3. The highest level of Gastropod diversity is located at station 2 with a value of 1.82. Based on the results of the validation and readability test of the ecological module, an average value of 90 and 82.9 was obtained for the legibility test, so it can be concluded that the module is very feasible to use.