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
 58   59   60   61   62 
The Potential and Development of Seaweed Cultivation in Lombok: A Review Nunik Cokrowati; Yenny Risjani; Sri Andayani; Muhamad Firdaus
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.4654

Abstract

The potential area of Lombok seaweed cultivation is 5490 Ha. The area utilized is 2039.63 Ha. The purpose of this paper is to review the diversity, cultivation activities, production and potential of seaweed to be developed, specifically focusing on aspects of cultivation and production on the island of Lombok, Indonesia. Macroalgae that have been cultivated on Lombok are Kappaphycus alvarezii morphotype brown and green and Gracilaria verucosa. The decline and the amount of uncertainty in production were caused by several problems in seaweed cultivation, weather changes, limited capital for production and decreased quality of seaweed seeds. The species that have the potential to be developed are Sargassum aquifolium, Caulerpa sp., Ulva sp., Eucheuma spinosum, and Gelidium sp. Development Locations are located throughout the waters in the shape of a bay and are by the stipulated water utilization spatial plan. Developing seaweed aqua tourism and institutional arrangements related to seaweed production is necessary.
Jicama Seed Response After Administering Auxiliary Hormones and Gibberellins Mulyanti; Dewi Yana; Lukman Martunis
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.4656

Abstract

Plant growth and development is influenced by hormones, which are chemical compounds that are synthesized in a part of the organs that are distributed to the organs, and play a special role at low doses or are slightly able to stimulate plant growth, development and metabolic processes. One of the plants that need growth regulators or hormones for growth and development is Jicama. The aim of the study was to see the response of jicama seeds after administration of auxin and gibberellin hormones. This study used a factorial Randomized Block Design (RBD), namely the first factor of the Auxin hormone with levels A0 = 0 ml, A1 = 1 ml, A2 = 2 ml. The second factor is the Gibberellin hormone with a level of G0 = 0 ml, G1 = 1 ml, G2 = 2 ml. All treatments were repeated 5 (five) times to obtain 45 experimental units. The results of the study showed that the auxiliary hormone and gibberellins and the combination of the two hormones had a very significant effect on live sprouts and shoot height.
Antibacterial Activity of Bitter Drugs from Lingga Malay Ethnic in Riau Archipelago Against Bacterial Causing Skin and Diarrhea Diseases Rahma Dhani; Rodesia Mustika Roza; Fitmawati
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.4430

Abstract

Infection is the major threat to humanity caused by infectious agents. The most common infectious agent of human is the cause of skin and diarrhea diseases. Melayu Lingga people uses alternative medicine called obat pahit potion to treat skin and diarrhea diseases and mixes by Praktisi Obat Tradisional (POT). The purpose of this research was to determine antibacterial activity of the methanol extract from obat pahit potion against bacteria that cause skin diseases (Staphylococcus aureus ATCC 12600, Staphylococcus epidermidis ATCC 12228, Pseudomonas aeruginosa ATCC 10145) and diarrhea (Escherichia coli ATCC 11775, Salmonella typhi ATCC 14028, Shigella flexneri ATCC 12022) by using disc diffusion method with variation of extract concentration (0.75 gr/ml, 0.5 gr/ml, and 0.25 gr/ml). Antibacterial activity was determined by measuring the inhibitory zone formed around the disc. Based on the result of antibacterial activity test, the largest inhibitory zone was found in S.aureus ATCC 12600, S.epidermidis ATCC 12228 and P.aeruginosa ATCC 10145 shown in POT Musai at 0.25 mg/ml concentrations with value 6,61 mm; 6,10 mm; and 10,11 mm. Meanwhile, antibacterial activity against E.coli ATCC 11775 shown in TMP Musai at 0.5 gr/ml concentration with value 4,47 mm. Antibacterial activity against S.typhi ATCC 14028 and S.flexneri ATCC 12022 shown in TMP Musai at 0.25 gr/ml concentration with value 8,20 mm and 11,73 mm.
Growth and Survival Performance of Transplanted Acropora Fragment in a Nursery Floating Hamid; Lalu Samsul Rizal; Denianto Yoga Sativa
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.4486

Abstract

The status of the condition of Indonesia's coral reefs is mostly categorized as moderate and damaged. Relatively inexpensive and easy-to-implement rehabilitation methods need to involve the participation of many stakeholders. The method of transplanting coral fragments by hanging (floating) from the surface of the water will be more efficient, especially in their maintenance. This study aims to investigate the most suitable water depth to support the growth and survival of the transplanted coral fragments. A non-factorial Completely Randomized Design (CRD) field experiment with 3 (three) treatments, namely different seedbed depths, 2 m, 4 m, and 6 m respectively. Each treatment was repeated 4 (four) times. The results of analysis of variance showed that the absolute growth rate of coral fragments transplanted by hanging from the surface of the water at different depths (2 m, 4 m, 6 m) showed no significant difference (P-value > 0.05). This shows that the environmental conditions at a depth of 2 m-6 m are relatively the same, so that on average all coral fragments have almost the same growth potential (0.29 cm/month). Meanwhile, the survival rate obtained is also very high (> 90%). These results confirm that the method of transplanting corals by hanging from the sea surface is technically feasible and gives good results. This will help many stakeholders to be involved in optimizing the economic potential value of coral reefs, as well as increasing participation in the conservation and rehabilitation of coral reefs.
Population Fluctuations of Scirpophaga innotata and Nilaparvata lugens In Various Varieties and Growing Age of Rice Plants Saipul Abbas; Itji Diana Daud; Sri Nur Aminah Ngatimin
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.4645

Abstract

Stem borer (Scirpophaga innotata) and brown planthopper (Nilaparvata lugens) are known as important pests in rice plants that attack plants from the nursery until just before harvest. Efforts to introduce new high-yielding varieties need to be carried out to provide farmers with references to varieties that are resistant or not to pest populations in the field. This study aims to look at the population levels of stem borer and brown planthopper pests at different planting ages for several test varieties. The method used was a randomized block design with 6 varietal treatments (IR14, IR15, IR16, IR18, IR19, IR20) and 3 tests with sampling intervals every week until 77 days after planting (HST). Data were analyzed using the Analysis of Variance (Anova) method and the Least Significant Difference Test (LSD). The results showed that the highest population of stem borers was found in plants aged 63 HST, namely 8 individuals/clump, while the lowest average population was found in plants aged 49 HST, namely 1 individual/clump. While the highest brown planthopper population was found at 77 HST, namely 10 individuals/clump, for the lowest population average at 63 HST, namely 4 individuals/clump. Populations of stem borer and brown planthopper in fact preferred rice variety IR14 with the highest population, while rice variety IR18 had the lowest population.
Rice Diversity of Inpari IR Nutri Zinc Variety in Three Clanning Seasons in West Nusa Tenggara Hiryana Windiyani; Baiq Tri Ratna Erawati
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.4413

Abstract

The spread of the Corona virus (Covid 19) is still developing with new variants, Indonesia is one of the countries that currently has not been able to overcome the pandemic. One of the ways to maintain the immune system is by maintaining nutritious food intake and consuming healthy foods. Deficiency of Zn in the body results in decreased endurance, productivity, and human quality of life. Zn deficiency is one of the causes of stunting. Inpari IR Nutri Zinc is biofortified rice with a zinc content of 34.51 ppm which plays a role in preventing stunting, helping to increase nutritional value while overcoming iron deficiency in the community. Based on the superiority of Inpari IR Nutri Zinc rice, it is necessary to study the productivity and suitability of agro-ecosystems on Lombok Island. The study was carried out in three locations, three growing seasons using Standard Operating Procedures (SOP) for IR Nutri Zinc Inpari Rice Cultivation. The three locations are Mataram District at MT I/2020, Gerung District MT II/2020 and Narmada District MT III/2020. The study was carried out using a Randomized Block Design (RBD) design in 3 locations, 3 growing seasons using the Standard Operating Procedure (SOP) for IR Nutri Zinc Inpari Rice Cultivation. The aim of the study was to determine the level of productivity consistency of the Inpari IR Nutri Zinc variety using the Standard Operating Procedure (SOP) for rice cultivation at the 3 locations. The planting of Inpari IR Nutri Zinc rice at each location and growing season was repeated 5 times. Parameters observed included agronomic growth and productivity. Data collection consists of secondary data (rainfall data) and primary data. For primary data carried out by direct observation in the field and interviews with implementing farmers and business actors. Inpari IR Nutri Zinc planted in 3 locations using standard operating procedures (SOP) for rice cultivation, showed higher productivity than the average yield of Inpari IR Nutri Zinc at the national level. The productivity of rice planted in the Mataram sub-district in MH 2020 was 7.63 t/ha. The planting of Inpari IR Nutri Zinc rice is suitable for planting in the rainy season, but can produce well in the dry season with water conditions or an average rainfall of at least 100 mm / growing season. Rice Inpari Nutri Zinc can and should be developed in West Nusa Tenggara Province, especially in paddy fields and districts where the stunting rate is still quite high in an effort to reduce and prevent stunting in West Nusa Tenggara.
Calorific Value of Several Types of Wood Through Proximate Analysis and Chemical Components Approach Fauzan Fahrussiam; Dini Lestari; Rima Vera Ningsih
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.4416

Abstract

The most potential biomass to be developed with a high lignocellulose content is wood.  Calorific value estimation based on the results of biomass analysis such as the proximate test can be used as an alternative to predict the calorific value accurately, quickly, and economically. Therefore, in this study, it is important to measure the calorific value simply using the proximate method with an analytical approach to the chemical content of the raw material. This study used three species of wood consisting of jabon (Anthocephalus cadamba Miq), ulin (Eusideroxylon zwageri), and api- api (Apicennia sp.). This study's chemical components that eximined in this study consist of extractive, holoselulose, and lignin content. The proximate analysis consists of volatile matter content, ash content, fixed carbon, and calorific value. The results show that ulin wood has the highest calorific value (20.13 MJ/kg), then api-api wood and last jabon wood. The high amount of calorific value is contributed by the high value of lignin, extractive, and fixed carbon.
The Effect of Shallot Peel (Allium ascalonicum L.) as a Natural Growth Regulatory Substance on Root Growth of Cassava Stem Cuttings (Manihot utilissima) Septiani Ayda; Agus Ramdani; I Gde Mertha
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.4565

Abstract

The effect of shallot peel (Allium ascalonicum L.) as a natural growth regulatory substance on root growth of cassava stem cuttings (Manihot utilissima). This study aims to determine the effect of shallot peel extract on root growth of cassava stem cuttings and determine the most effective treatment for root growth of cassava stem cuttings. This study used a completely randomized design consisting of 1 factor, namely the treatment of shallot peel extract concentration which had 10 levels (concentration 0%, 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80 %, 90% and 100% of shallot peel extract) and 3 replicates. The variables observed in this study were the number of roots and the longest root length from the roots of cassava stem cuttings. The data obtained were analyzed using the ANOVA test and the HSD (Honestly Significance Different) follow-up test with an error rate of 5%. The results showed that the treatment of shallot peel extract had a significant effect on the root growth of cassava stem cuttings. The most effective concenstration of shallot peel for root number growth was 20%, while for root length growth the most effective concentration was 30%.
Analysis of Potential Coastal Resources for Recommendations for Designating Marine Protected Areas in Kondang Merak Bay, Malang Regency Dimas Syarif Alim; Dhira K Saputra; Arief Darmawan; Kiki Rizky Arisandy; Anthon Andrimida
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.4598

Abstract

Kondang Merak has allocated as MPA Site based on East Java Province Government Decree No. 1/2018 on the Zoning Plan for Coastal and Small Islands Areas Provinsi Jawa Timur Years 2018-2038. To this date, Kondang Merak Beach’s lack of zoning and management plan. This research conducted to asses coastal area resources on Kondang Merak Beach and to recommend MPA category. This research is done by doing a survey on identifying coastal habitat and protected species, scoring and drafting zoning plan based on conservation features and resource use which has been recorded. On the other hand, Forum Group Discussion with locals stakeholder were carried out to ensure the preference of the proposed zoning. The result showed that Kondang Merak Beach has 0,15 Ha of mangrove ecosystem, 0,23 Ha of seagrass ecosystem, 39,7 Ha of coral reef ecosystem, and 2 Ha of fish apartment site. The zoning map shows that there are two high potential site as core zone, covering both area of 12,4 Ha and 6,5 Ha. 
Gastropod Microhabitat Associations and Niches in Seagrass Ecosystems on Donrotu Island, South Jailolo District, West Halmahera Regency Sunarti; Yuyun Abubakar; Riyadi Subur; Salim Abubakar; Rina; Adi Noman Susanto; Ariyati H. Fadel
Jurnal Biologi Tropis Vol. 23 No. 1 (2023): 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.v23i1.4642

Abstract

Gastropods are included in the mollusk phylum which is known to be well-associated with seagrass ecosystems. The gastropod community is an important component in the food chain in seagrass beds and ecologically seagrass beds have an important role in the ecosystem. Seagrass ecosystems are habitats and food sources for fish and other aquatic biota. One of the biota commonly found in seagrass beds is Gastropods. This study was conducted to know the composition of gastropod species, types of gastropod associations, and gastropod microhabitat niches in seagrass ecosystems on Donrotu Island. Gastropod sampling was carried out at low tide. The gastropod samples found were then put into a plastic bag that already contained a label. Furthermore, the gastropod samples were brought ashore to count the number of individuals of each type and determined based on morphological characteristics such as shell shape, shell color, shell mouth opening, and spiral circle based on Dharma (1992) instructions. Based on the results of the study, the composition of the types of gastropods found in the seagrass ecosystem on the island of Donrotu was as many as 13 species. There were 13 pairs of gastropod types that had positive associations and 65 pairs of no associations. The type of gastropod that has the widest habitat niche is Cypraea tigris and the narrowest are Naticarius coillei and Pseudovertagus aluco.

Page 60 of 257 | Total Record : 2562

 58   59   60   61   62 

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