Karakteristik Habitat dan Konservasi Amfibi di Pulau Lombok

The previous study stated that there are 12 species of Amphibians found in Lombok Island, Indonesia. Four of which are the endemic species of Lesser Sunda Islands, namely Oreophryne monticola, Limnonectes kadarsani, Limnonectes dammermani dan Hylarana florensis. However, the information regarding the habitat characteristic which supports animal survival is limited. This study aimed to explore the types of habitat characteristics according to amphibian diversity in the Island of Lombok. The survey study was conducted at 9 locations (3 of habitat type) from March to July 2016. The collected data includes species composition and a sum of individuals of species. Amphibian diversity was analyzed using relative abundance and the Shannon-Wiener index. This study revealed that the nonforest habitat type was appropriate for five species, while secondary and primary forest habitat type was appropriate for seven species. Diversity of species index directly proportional to a natural level of habitat (H’ Nonforest = 1.3; H’ Secondary Forest = 1.7; H’ Primary Forest = 1.8). The highest species abundance was Bufo melanostictus (23.9%), and the lowest species abundance was Oreophryne monticola (0.9%). According to the distribution and relative abundance, the species that require conservation priorities are Oreophryne monticola and Hylarana florensis

Piebaldism in To Balo, South Sulawesi: Brief Report and Literature Review

Piebaldism is an autosomal dominant congenital disorder in pigment as a result of mutations in KIT gene, mapped on the long arm of chromosome 4. To Balo lived as a carrier of piebaldism genes. There are only four individuals of To Balo communities remained on Pujananting district, South Sulawesi. This study was a brief report and literature review about suspects of Piebaldism in To Balo. Data was collected by observation of depigmentation, interview and then depicted in pedigree. Phenotypic observations resulted in piebaldism on three individuals of To Balo, showed the same pattern and location of white patches. It is concluded that normal individuals could appear in third-generation when a woman or man carrier of piebaldism married with a normal individual

Notes of Some Macroscopic Fungi at IPB University Campus Forest: Diversity and Potency

Macroscopic fungi is cosmopolitan-heterotrophic organisms which have an important ecological role in ecocystem. The aim of this study was to explore the diversity of species and the potency of Fungi in the Campus Forest of IPB Unversity. Observation was carried out in March to April 2019 using exploration method. Identification used morphological characteristic such as fruit body shape, hygrophnous, cap color, diameter, edge, and margin, wetness level, himenophore type. Result showed that 11 species of macroscopic fungi were identified, divided into 7 families, 4 order, and 1 class. The Group fungi were identified as Termitomyces sp. 1, Termitomyces sp. 2, Marasmius sp. 1, Marasmius sp. 2, Psathyrella sp., Geastrum sp., Stereum sp., Microporus sp., Polyporus sp., Ganoderma sp. 1 and Ganoderma sp. 2. All identified fungi were Basidiomycota. Some fungi found to be potentially used as food source, medicine, and also played an important role as a decomposer in the IPB university campus forest

Diversity of Butterflies (Lepidoptera: Rhopalocera) in Sumber Clangap and Waduk Selorejo, East Java

Diversity of butterflies in various habitats very diverse, and it is one of them in the region Sumber Clangapand Waduk Selorejo. It has seen from the combination of colors and which wing shape varies. In this, bothregions were chosen because it had been affected by Mount Kelud eruption, which causes damage to thesurrounding area. The purpose of this research is to know the diversity of butterflies (Lepidoptera:Rhopalocera) in the region of Sumber Clangap and Waduk Selorejo, East Java. This research wasconducted on 26-29 January 2019. Sampling has taken by the method of Belt transect along the transectpath randomly with a technique snapshot experiment and a sweeping technique. Based on theobservations obtained 3 of the same family, Nymphalidae, Pieridae, and Papillionidae. The butterflydiversity in Waduk Selorejo belongs to low, whereas in Sumber Clangap are classified by index Shannon-Winner = 0.38 H ' and H ' = 2.47. Found eight types of butterflies from 3 families with a total of 13 speciesand has a value of H ' =2.47

Floristic Composition, Distribution, and Association of Pandanus (Pandanaceae) in Bukit Duabelas National Park Jambi

Pandanus species is widely distributed over Bukit Duabelas National Park in Jambi. Suku Anak Dalam (SAD), a local community living in Bukit Duabelas National Park area, use the natural fibers from Pandanus for many necessities, such as plaiting, building materials, and performing mytological rituals. This study aimed to examine floristic composition, distribution patterns, and association of pandanus species in Bukit Duabelas National Park. Sampling was conducted using a striped line, with a plot of 35 sample plots. Dominance of species was calculated using dominant type of important Value Index (IVI) based on the density, frequency, and dominance of sample plot enumeration. Distribution patterns was analyzed using the Morisita Index, while association patterns were measured by Contingency tables and Chi-square tests. Floristic composition was mostly found in the seedling strata consisting of 106 species. The species with highest important value index (IVI=14.53) was Palaquium gutta. There were two species of Pandanus (Benstonea kurzii and Benstonea atrocarpa) were spread in groups and three species of pandanus (Pandanus labyrinthicus, Pandanus furcatus, and Pandanus immersus) were spread evenly. The pandanus species found was associated with Benstonea kurzii was Litsea sp1. This present study suggested that the conservation of pandanus species should be conducted as a piece of rehabilitation of tropical forests in Bukit Duabelas National Park

ISOLATION OF CHITOSAN SNAIL SHELL (Achatina fulica F) ON CHEMICAL CHARACTERISTICS AND BACTERIA OF Staphylococcus aureus KIRBY BAUER IN VITRO METHOD

The shell of snail contains chitin that can be transformed into chitosan through four stages, which are deproteination, demineralization, depigmentation, and deacetylation. Chitosan can be utilized as an antibacterial agent because it has amine groups. In this research, chitosan that prepared from the snail shell will be analyzed using FT-IR spectroscopy to determine the deacetylation degree (DD). The antibacterial activity test result of Staphylococcus aureus will be carried out on chitosan with various concentrations using in-vitro Kirby Bauer method and will be analyzed using One Way ANOVA with confidence level at 95%. The variations concentration of chitosan used is 300, 400, 500, 600, and 700 ppm. The result shows that the deacetylation degree of chitosan is 63.09% and the optimum concentration of chitosan that can inhibit the Staphylococcus aureus bacteria is 500 ppm with diameter inhibition is 34.33 mm.Cangkang bekicot mengandung kitin yang dapat diisolasi menjadi kitosan. Kitosan diketahui memiliki sifat antibakteri kerena memiliki gugus amina. Tujuan penelitian ini untuk mengetahui isolasi kitosan cangkang bekicot (Achatina fulica F) terhadap karakteristik kimia dan bakteri Staphylococcus aureus dengan metode kirby bauer secara In Vitro dan berapakah konsentrasi kitosan cangkang bekicot yang paling optimal dalam menghambat bakteri Staphylococcus aureus. Penelitian ini menggunakan jenis penelitian true experimen. Analisa data dengan uji One-Way ANOVA dengan taraf kepercayaan 95% menunjukkan terdapat perbedaan yang bermakna (p<0,05) antara berbagai konsentrasi, sehingga dilanjutkan dengan uji LSD untuk mengetahui adanya perbedaan pada masing-masing perlakuan. Hasil menunjukan bahwa derajat deasetilasi kitosan sebesar 64,24 %. Hasil uji LSD menunjukkan bahwa kosentrasi 300 ppm dan 400 ppm berbeda nyata dengan konsentrasi 500 ppm, 600 ppm, dan 700 ppm, sedangkan konsentrasi 500 ppm dan 600 ppm tidak berbeda nyata dengan konsentrasi 700 ppm. Kesimpulan penelitian ini bahwa ekstrak kitosan cangkang bekicot berpengaruh positif dalam menghambat dan membunuh bakteri Staphylococcus aureus dan konsentrasi paling optimal pada 500 ppm. Kata kunci : Cangkang bekicot (Achatina fullica), kitosan, Metode Kirby Bauer, Staphylococcus aureu

Public Service Motivation: The Teaching Performance of Biology Teachers

The objective of this research was to explore the impact of Public Service Motivation (PSM) on the teaching performance of biology teachers at Madrasah Aliyah in Central Lombok Regency. The research method employed was a quantitative approach. This research was conducted on 32 samples of biology teachers at Madrasah Aliyah (High School) in Central Lombok Regency. Data were collected through a structured questionnaire containing statements filled out by respondents using a Likert Scale and scores of the respondent’s answer in each variable. Statistical calculations showed that the correlation value (r) between the Public Service Motivation (PSM) and the Teachers Performance variables was positive (0.278). However, the correlation between the Public Service Motivation and the Teachers Performance variables occurred was not significant. This present study suggests that Public Service Motivation has a positive correlation with the Teaching Performance

Plankton Biodiversity in The Burai River of Ogan Ilir District, Sumatera Selatan

The purpose of this study was to determine the abundance of plankton in the Ogan Ilir regency of South Sumatra. Samples were obtained using a purposive random sampling method with plankton as the main material for measuring abundance and the Shannon Wiener Diversity Index (H), Simpson Dominance Index (C), and plankton abundance index. The results of the study obtained six classes consisting of 15 genera of plankton including Fragielaria, Synedra, Eunotia, Diatom, Fustulia, Oedogonium, Gonium, Chaetophora, Microspora, Allona, Neuplius, Lyngbya, Spirulina, Cyclotella and Dismidium. Diversity value at point 1 (1.75) with medium category, point 2 (3.5) with high category, point 3 (0.75) with the medium category. The diversity value of three points is known to be low in population

The Effectiveness of SETS based-learning in Improving Students’ Higher-Order Thinking Skills

The aim of this study was to investigate a SETS (Science, environment, technology) based-learning approach for junior high school students on how well SETS based-learning improves thinking skill on the waste management. This study was conducted to 20 students of 7th grade. Data collection were employed by class observation (carried out pre and post test), essay analysis (based on several cognitive indicators such as analyze, evaluate, and create), and learning activities regarding environmental issues. The results showed that SETS based-learning could positively improve students critical thinking in terms of learning process and performance in creativity, motivation, critical thinking. If the number of subjects is increase, SETS based-learning strategy could be more challenging

Penurunan Total Koloni Bakteri Daging Ayam Pedaging (Gallus domesticus) di Pasar Pagesangan, Kota Mataram Dengan Perlakuan Infusa Daun Salam (Syzygium polyanthum)

Tujuan penelitian ini untuk mengetahui pengaruh konsentrasi infusa daun salam dan waktu pengamatan terhadap penurunan jumlah bakteri pada daging ayam pedaging. Penelitian  dilakukan  secara  eksperimental menggunakan rancangan  acak  lengkap dengan 3 perlakuan yaitu (konsentrasi infusa 0%, 5%, 10%) dan 3 ulangan. Variabel yang diukur meliputi jumlah bakteri. Data total koloni bakteri dianalisis secara kuantitatif menggunakan ANOVA. Hasil analisis data tersebut menunjukkan bahwa F hitung > Ftabel sehingga Ha diterima artinya perendaman dengan konsentrasi infusa daun salam berpengaruh terhadap penurunan total koloni bakteri pada daging ayam pedaging karna senyawa yang terkandung di dalam daun salam seperti tannin, flavonoid, dll. &nbsp