cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kota mataram,
Nusa tenggara barat
INDONESIA
Jurnal Biologi Tropis
Published by Universitas Mataram
ISSN : 14119587     EISSN : 25497863     DOI : -
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Immunology & microbiology
Jurnal Biologi Tropis (ISSN Cetak 1411-9587 dan ISSN Online 2549-7863) diterbitkan mulai tahun 2000 dengan frekuensi 2 kali setahun oleh Program Studi Pendidikan Biologi PMIPA FKIP Universitas Mataram, berisi hasil penelitian dan ulasan Ilmiah dalam bidang Biologi Sains.
Arjuna Subject : -
Articles 2,562 Documents
 41   42   43   44   45 
Inhibition of bacterial growth of Leilem leaf extract (Clerodendrum minhassae Teijsm. & Binn): Inhibition of bacterial growth of Leilem leaf extract Masje Wurarah; Yermia Semuel Mokosuli
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3394

Abstract

Leilem (Clerodendrum minhassae Teism. & Binn.) is a plant endemic to Sulawesi. Leilem leaves are used as a typical food vegetable for the Minahasa tribe. However, leilem leaves were used as a medicinal plant for intestinal worms, abdominal pain and chest pain. There has been no research report on the use of leilem leaves as a source of antibacterial bioactivity. This study aims to obtain the best concentration of antibacterial Leilem leaf extract. Leilem leaves are obtained from North Minahasa. Extraction by maceration method using various solvents with a level of polarity. The test concentrations of the extract were 100 mg/L, 200 mg/L, 400 mg/L and 800 mg/L. As a positive control, clindamycin 400 mg/L was used. The results showed that the percentage of solvent yield was ethanol, which was 1.23% at 1:4 (w/v) maceration. The average diameter of bacterial growth is 12.6 mm. The results of the one way ANOVA analysis showed significant differences between test concentrations (p>0.5). Tukey's test showed that the three extracts significantly inhibited the growth of gram-positive bacteria Staphylococcus aureus strain ATCC 25923. The n-hexane extract showed the best antibacterial activity, followed by ethanol extract and ethyl acetate extract. Leilem leaves are potential to be developed as a source of antibacterial bioactive.
Community Structure of Bacillariophyceae in the Water of Klui Beach, North Lombok Yuni Safrian Hadi; Lalu Japa; Lalu Zulkifli
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3398

Abstract

Coastal areas have potential that can be developed by the community, one of which is beach tourism. Tourism activities around that take place around the coast can affect the aquatic ecosystems especially the community structure of phytoplankton. Phytoplankton are aquatic organisms that act as primary producers. Bacillariophyceae is a class of phytoplankton that is commonly abundant in marine waters. The objectives of this study were to determine the species composition, species abundance, and community structure of Bacillariophyceae in the waters of Klui Beach. This type of research is descriptive-explorative. The Haphazard sampling was applied for determining the sampling sites. Phytoplankton data were analyzed using the abundance formula, diversity index, uniformity index, and dominance index. The results showed that the composition species of Bacilllariophyceae consisted of 48 species which included in 17 orders. Average species abundance was 298.09 ind/L (low category). The spesies diversity index was 2.37 (moderate category), the species uniformity index was 0.86 (high category), and the species dominance index was 0.13 (low category).
Ethanol Extract Test of Mustajab Leaves (Rhinacanthus nasutus L. Kurz) Against the Growth of Fusarium oxysporum Lalu Septiadi Wirandanu; Syamsul Bahri; Dewa Ayu Citra Rasmi
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3419

Abstract

The research goal is to analyze the concentration of ethanol extract of mustajab (Rhinacanthus nasutus) leaves which is has the most effective in inhibiting the growth of Fusarium oxysporum micelium which were isolated from shallots (Alliun cepa L). The sample testing method used the method of effectiveness. The experimental design used Completely Randomized Design (CRD). The data of inhibition acitivity of ethanol extract of mustajab (Rhinacanthus nasutus) leaves on the growth of Fusarium oxysporum were collected by measuring the diameter of the mycelium of Fusarium oxysporum. The data of inhibition acitivity were analyzed by using a one-way analysis of variance at a significance level of 95%, followed by the Honestly Significant Difference test. The results showed that concentrations of ethanol extract of mustajab (Rhinacanthus nasutus) leaves significantly effective in inhibiting the growth of Fusarium oxysporum mycelium. The most effetive concentration of ethanol extract of mustajab (Rhinacanthus nasutus) leaves in inhibiting the growth of Fusarium oxysporum is 5%. The inhibition activity of this concentration is up to 64%, and this inhibition activity is classified into the strong category.
The Effect of Planting Media Composition on the Growth of Dendrobium Sp. Orchid Seedlings Nur Rokhimah Hanik; Ratna Dewi Eskundari; Tri Wiharti
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3446

Abstract

Fern is the best growing medium for orchids, because it is protected, a solution is needed to find a substitute for fern media. In this study, a combination of stem charcoal, husk charcoal and peanut shell compost was chosen. The combination of the three was chosen because the charcoal sticks and husk charcoal are relatively sterile and the peanut shell compost can function as a medium and fertilizer. The purpose of this study 1. To determine the effect of the composition of the planting medium on the growth of Dendrobium sp orchid seeds 2. To determine the best composition of the growing media for the growth of Dendrobium sp orchid seeds. The research time was 2.5 months, the object of the research was the Dendrobium sp. orchid aged 12 months, the research location was at Paranet's house, Gabahan Village, RT 05 RW 12, Jombor Sukoharjo. Simple randomized study design with 4 treatments. Treatment A Planting orchid seeds with a mixture of ferns and peanut shell compost in 10 pots. Treatment B was planting orchid seeds with a mixture of stem charcoal, husk charcoal, and peanut shell compost in a ratio of 1:1:1 for 10 pots. Treatment C was planting orchid seeds with a mixture of charcoal stems, husk charcoal and peanut shell compost in a ratio of 1/4:1/4:1/2 for 10 pots. Treatment D was planting orchid seedlings. The variables observed were the number of leaves, leaf length, leaf area, number of tillers, and wet weight measured 12 weeks after treatment. Data analysis using Varieties Test (Anova or Kruskal Wallis Test) followed by Duncan's Multiple Range Test (DMRT) or Mood Median Test. Growth parameters were observed (leaf length, number of leaves, leaf area, and wet weight). As for the number of tillers, there was a difference in influence, although the difference was not significant. Treatment The combination of K.1/2 media or with a comparison of peanut shell compost, charcoal stems and husk charcoal 1/2:1/4:1/4 gave the best effect on the 4 observed growth parameters (Leaf Length, Leaf Number, Leaf Area). , and wet weight). From the results of this study, collectors, orchid lovers and orchid entrepreneurs can use a combination of stem charcoal, husk charcoal and peanut shell compost as a substitute for ferns with a mixture of charcoal stems, husk charcoal, and peanut shell compost in a ratio of 3/8:3/ 8:2/8.
The Growth Response of Kale Land (Ipomoea reptans Poir) to the Aplications of Vermicompost and NPK Fertilizer Ahmad Raksun; Mohammad Liwa Ilhamdi; I Wayan Merta; I Gde Mertha
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3447

Abstract

Kale land is a short-lived plant, containing the nutrients needed by the human body. The growth of kale land is influenced by various factors, one of which is the adequate supply of nutrients needed by plants. Fertilization is one of the efforts that can be done to ensure the availability of nutrients on agricultural land. Research has been carried out on the growth response of kale land due to the application of vermicompost and NPK fertilizers. The purpose of this research is to obtain information about (1) increased growth of  kale land due to the application of vermicompost, (2) increased growth of kale land due to application of NPK fertilizer, (3) increased growth of  kale land  due to the interaction of vermicompost and NPK fertilizer treatments. The research was carried out using an experimental method in the form of factorial arranged according to a completely randomized design. The first factor is vermicompost (C) with doses of 0 kg, 0.4 kg, 0.8 kg, 1.2 kg and 1.6 kg vermicompost per square meter of agricultural land. The second factor is the application of NPK fertilizer (P) at a dose of 0 g, 0.5 g, 1 g, 1.5 g per plant. Thus there were 20 treatment combinations and each combination was carried out with 3 replications. The growth parameters observed were plant height, total leaf, leaf length, leaf width and stem diameter of land kale. Research data were analyzed by Anova. The conclusions of the study were: (1) The application of vermicompost could increase plant height, number of leaves, leaf length and leaf width but could not increase stem diameter of kale land (2) application of NPK fertilizer can improve all growth parameters of kale land kangkong. (3) The interaction of vermicompost and NPK fertilizer cannot increase the growth of kale land.
Adaptation of Community of Seaweed Cultivation in Disease Attacks and Climate Change in Seriwe Village Jerowaru District Suparmin Suparmin
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3481

Abstract

Adjustment to the external environment in carrying out all activities as a result of climate change is a must for every individual, including fishermen in Seriwe village. This study aims: first, to analyze the adaptation of fishermen in the face of climate change and attacks of seaweed disease. Second, analyze the use of leisure time, income, and household expenses of fishermen. The method used in this research is descriptive method with survey technique. The conclusion in this study is that fishing households can adapt to climate change by resting, not going to sea and filling with other activities. If there is an attack of ice-ice disease, fishermen only secure seaweed that is still good. The time used by fishermen for seaweed cultivation increases the working time in a year, which is 90 hours. Fishermen's household income comes from fishing, trading, labor, and seaweed cultivation. Fishermen household expenditures are dominated by food consumption needs.
Growth and Content of Seaweed Carrageenan Kappaphycus alvarezii Cultivated at Bottom-off method Devi Suryani Putri; Nunik Cokrowati; Dewi Putri Lestari; Ahmad Ahmad
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3539

Abstract

Kappaphycus alvarezii is a red alga that produces kappa-carrageenan which can be used as raw material for processed foods, medicines, cosmetics, and bacterial media materials. The production of K. alvarezii is increasingly being sought to increase to meet consumer demands. This study aimed to analyse the growth rate and content of carrageenan in K. alvarezii cultivated using the bottom-off method. This research was conducted at the Seaweed Center of Balai Perikanan Budidaya Laut (BPBL), Gerupuk, Pujut District, Central Lombok Regency, West Nusa Tenggara Province. The research method used was experimental with a completely randomized design consisting of five spacing treatments. The treatments in this study were P0 (distance 15 cm as control), P1 (distance 10 cm), P2 (distance 15 cm), P3 (distance 20 cm), P4 (distance 25 cm). K. alvarezii cultivation was carried out for 40 days. The result of this study is the highest yield of carrageenan was obtained at P4 of 6.846%. The highest absolute weight of K. alvarezii was obtained in treatment P4 (25 cm) which was 121.67 g. The highest specific growth was found at P4 (25 cm) which was 1.98%/day. This study concludes that K. alvarezii spacing significantly affects the growth and carrageenan of seaweed cultivated at the bottom-off method.
Bivalve Diversity Associated with Seagrasses in The Southern Coastal Waters of Central Lombok Lalu M. Faatih Basmalah; Abdul Syukur; Khairuddin Khairuddin
Jurnal Biologi Tropis Vol. 22 No. 1 (2022): January - March
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i1.3611

Abstract

Bivalves have an important role for the aquatic environment, namely as bioindicators of environmental health and water quality associated with seagrass. Bivalves are a class of molluscs associated with seagrass. This study aims to analyze the diversity of bivalves, and the relationship of environmental factors to the habitat of bivalves. The method used in this research is the line transect and quadratic method. The research approach was through observation, data collection for seagrass and bivalves using quadrant and transect methods. Data analysis used descriptive statistical analysis, ANOVA, and Pearson correlation. The results of the study found 16 species belonging to 7 families (Veneroidae, Arcidae, Cardidae, Tellinidae, Pinnadae and Pteriidae). The highest bivalves diversity index (H') was found at Kuta Mandalika Beach at 2.40 and the lowest at Gerupuk Beach at 2.02. The ANOVA results showed that the richness and abundance of seagrass-associated bivalves in the study area was determined by the environmental characteristics of the seagrass, especially the substrate. Second, seagrass can be a suitable substrate for bivalves to survive. The results of this study can be a reference for future researchers and a source of information for study purposes and for the development of science, especially in the field of invertebrate zoology.
Types and Capacity of Coral Reefs Collecting as Material For Making Lime, In Gunung Malang Village, East Lombok Dining Aidil Candri; Lia Mar’atus Sholeha; Hilman Ahyadi; Yuliadi Zamroni
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3622

Abstract

Coral reefs ae onne of the ecosystems who have both ecological and economical function. I Gunung Malang community, coral reef have been used as main mateerial in lime powder production. The aim of this research to identified the species, distribution and capacity of coral reefs in lime powder production and than how the marketing system of the product. This research conducted from January to September 2018. The data was collected by measurement and identificatio of coral ad then interviewed the lime powder labours. The result of the research reported 29 species of coral from 17 genera and 8 families which was taken in 9 locations, six of it are live coral reef sites and the other are dae coral sites. Acropora abrolhosensis is dominant species with 605 Kg of coral mininng, followed by acropora sp with 535 kg and acropora palifera with 307 kg. The capacity of coral used inn are processig of lime powder production between 2000-3000 Kg, it will product 60-100 sacks of lime powder with 25 to 30 Kg in each sack. The lime powder in not sale directly to the consumers by the producer but it saleing to mainn collectors and then distriuted to the consumers or building stores.
The Effect of Tofu and Fermented Coconut Dregs on Body Weight Gain and Cocoon Production of African Worms (Eudrilus eugeniae) Rakhmatdi Rakhmatdi; Dewi Puspita Sari
Jurnal Biologi Tropis Vol. 22 No. 2 (2022): April - June
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v22i2.3285

Abstract

Earthworms are currently in great demand for industrial and pharmaceutical needs, so it is necessary to increase the productivity of worms by breeders. This study aims to determine the effect of giving tofu pulp and coconut pulp on body weight gain and cocoon production of Eudrilus eugeniae worms. The object of this research is Eudrilus eugeniae which has been clit. This study was divided into two groups, namely control and treatment with six replications each so that there were 24th experimental units. In the control and treatment groups, the researchers included 10th Eudrilus eugeniae worms in each treatment in the form of a combination of tofu pulp and coconut pulp. Parameters observed were worm biomass and several cocoons. The data on the weight gain of the worms were analyzed using One Way Anova and then continued with the Duncan Multiple Test (DMRT) with significantly different results. Furthermore, data on the number of worm cocoons were analyzed using the Kruskal Wallis test. The results showed that the provision of tofu and coconut pulp had a significant effect on body weight gain and the production of Eudrilus eugeniae cocoons. There is an effect of giving tofu dregs and fermented coconut pulp on the increase in body mass of Eudrilus eugeniae worms as a conclusion.

Page 43 of 257 | Total Record : 2562

 41   42   43   44   45 

Filter by Year

2013 2026


Reset
Filter By Issues
All Issue Vol. 26 No. 1 (2026): Januari-Maret Vol. 25 No. 4a (2025): Special Issue Vol. 25 No. 4 (2025): Oktober-Desember Vol. 25 No. 4b (2025): Special Issue Vol. 25 No. 3 (2025): Juli-September Vol. 25 No. 2 (2025): April-Juni Vol. 25 No. 1 (2025): Januari - Maret Vol. 24 No. 4 (2024): Oktober - Desember Vol. 24 No. 3 (2024): July - September Vol. 24 No. 2b (2024): Special Issue Vol. 24 No. 2 (2024): April - Juni Vol. 24 No. 1 (2024): Januari - Maret Vol. 24 No. 1b (2024): Special Issue Vol. 23 No. 4 (2023): October - December Vol. 23 No. 3 (2023): July - September Vol. 23 No. 2 (2023): Special Issue Vol. 23 No. 2 (2023): April-June Vol. 23 No. 1 (2023): Special Issue Vol. 23 No. 1 (2023): January - March Vol. 22 No. 4 (2022): October - December Vol. 22 No. 3 (2022): July - September Vol. 22 No. 2 (2022): April - June Vol. 22 No. 1 (2022): January - March Vol. 21 No. 3 (2021): September - Desember Vol. 21 No. 2 (2021): Mei - Agustus Vol. 21 No. 1 (2021): Januari - April Vol. 20 No. 3 (2020): September - Desember Vol. 20 No. 2 (2020): Mei - Agustus Vol. 20 No. 1 (2020): Januari - April Vol. 19 No. 2 (2019): Juli - Desember Vol. 19 No. 1 (2019): Januari - Juni Vol. 18 No. 2 (2018): Juli - Desember Vol. 18 No. 1 (2018): Januari - Juni Jurnal Biologi Tropis vol.17 No.2 Desember 2017 Jurnal Biologi Tropis vol.17 No.1 Juni 2017 Jurnal Biologi Tropis. Vol.16 No.2 Desember 2016 Jurnal Biologi Tropis. Vol.16 No. 1 Juni 2016 Jurnal Biologi Tropis. Vol.15 no.2 Desember 2015 Jurnal Biologi Tropis. Vol.15 No. 1 Juni 2015 Jurnal Biologi Tropis. Vol.14 No. 2 Desember 2014 Jurnal Biologi Tropis. Vol.14 No. 1 Juni 2014 Jurnal Biologi Tropis. Vol.13 No. 2 Desember 2013 Jurnal Biologi Tropis. Vol.13 No.1 Juni 2013 More Issue