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 2,520 Documents
 188   189   190   191   192 
Spatial Distribution Pattern of Plants with Potential to Regulate Water Balance in the Babak Watershed Upstream Area Prasetyo, Andrie Ridzki; Valentino, Niechi; Setiawan, Budhy; Shabrina, Hasyyati; Chaerani, Nurul; Syahruanda, Eggi
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9010

Abstract

Watershed degradation poses a serious threat to water availability, ecosystem sustainability, and human well-being. This study aims to identify and analyze the spatial distribution patterns of three key water-regulating plant species Pterospermum javanicum, Ficus spp., and Dendrocnidae decumana in the upstream area of the Babak Watershed, Lombok, Indonesia. Field data were collected through exploratory surveys and analyzed using the Average Nearest Neighbor (ANN) method in ArcGIS 10.8. The results reveal distinct spatial patterns: D. decumana exhibits a random distribution (R = 0.925), while Ficus spp. (R = 0.667) and P. javanicum (R = 0.698) show clustered patterns. These patterns reflect ecological adaptations such as tolerance to environmental heterogeneity or vegetative reproduction strategies. Despite differences, all three species significantly contribute to watershed hydrology by enhancing infiltration, reducing surface runoff, and stabilizing soil. Spatial analysis of vegetation distribution provides essential insights for data-driven watershed management and supports targeted conservation strategies in ecologically sensitive upstream zones.
Fish Diversity in The Seagrass Beds of Labuhan Sangoro Waters, Sumbawa Gusfina, Omira Calia; Karnan, Karnan; Syukur, Abdul
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9013

Abstract

The waters of Labuhan Sangoro in Sumbawa have seagrass beds that function as important habitats for various fish species. Information on fish diversity in this area plays an important role in supporting conservation efforts and management of aquatic resources. This study aims to analyze the level of fish diversity in the Labuhan Sangoro seagrass bed area, Sumbawa Regency, West Nusa Tenggara Province. Sampling was carried out in three locations selected based on differences in habitat characteristics, namely mangrove areas, areas with natural ecological conditions, and areas adjacent to residential areas. The data collection method used a gill net with a length of 25 meters and a width of 1 meter, and two mesh sizes, namely 1.5 inches and 2 inches. The nets were installed at each predetermined location to represent the variation of existing habitats. This approach aims to ensure that the data obtained can reflect the real conditions regarding the distribution and abundance of fish species in the seagrass bed area. The results of the study showed that the diversity of seagrass fish in the waters of Labuhan Sangoro, Sumbawa, was at a moderate level (H’ = 2.91), with a low level of species dominance (D = 0.06), indicating that no species dominated significantly. The high level of evenness (E = 0.92) reflects a relatively even distribution of individuals between species. Overall, the aquatic ecosystem in this area shows a relatively balanced condition and supports moderate biodiversity, with an even distribution of species and no dominance of certain species.
Application of Liquid Fertilizer Trichoderma harzianum (R3) on Siam Citrus (Citrus nobilis var. microcarpa) Asiah, Nur; Rahmawati, Rahmawati; Mukarlina, Mukarlina; Khotimah, Siti
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9029

Abstract

An economically significant fruit in West Kalimantan is the Siam orange (Citrus nobilis var. microcarpa). Low fertility is a problem for Siam orange cultivation in the region's vast peatlands; Trichoderma sp. fertilizer can promote organic matter breakdown, increase nutrient availability, and aid in plant growth. This study aimed to evaluated the effect of liquid T. harzianum (R3) on Siam orange seedlings in peat soil. The study employed a completely randomized design (CRD) with four replications for each of the five treatments: control (0), 5, 15, 25, and 35 mL/L of T. harzianum (R3). Plant height, leaf count, root length, wet weight, dry weight, and chlorophyll content (a, b, and total) were among the parameters that were measured. The application of liquid T. harzianum (R3) had a significant impact on all growth metrics, including chlorophyll a and total chlorophyll content, according to the analysis of variance test. The most effective method for promoting the growth of siam orange seedlings was the application of 25 mL/L of liquid T. harzianum (R3).
Diversity of Ferns (Pteridophyta) in the Bukit Pinteir Forest Central Bangka Harijayanti, Devita; Nisa, Amanatun; Partinisah, Firgia; Salsabila, Naqqiyah; Indira, Salsa; Ramadani, Suci Hajria; Izafah, Tari Zara; Amelia, Tia
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9044

Abstract

The aim of this study was to identify and analyze the diversity of ferns (Pteridophyta) in the secondary forest of Bukit Pinteir, Central Bangka. We collected the primary data through field observations conducted using the purposive sampling method, along with the measurement of abiotic factors at two stations with different altitudes (96 and 238 mdpl). The data were analyzed with important value index and Shannon-Wiener species diversity index (H’).  Twelve fern species from 10 families were identified, namely Dicranopteris linearis, Davallia denticulata, Nephrolepis cordifolia, Nephrolepis biserrata, Lygodium japonicum, Lygodium flexuosum, Coniogramme japonica, Blechnopsis orientalis, Asplenium nidus, Platycerium coronarium, Pteridium esculentum, and Stenochlaena palustris. Based on the results, Nephrolepis cordifolia was the most dominant species, with its important value index was 16.92, followed by Dicranopteris linearis and Blechnopsis orientalis. The Shannon-Wiener diversity index (H’ = 0.663) indicated low species diversity with uneven distribution. Abiotic factors such as temperature (30.1–30.5 °C), soil moisture (60–70%), air humidity (67–71%), and soil pH (6.5) reflected a microclimate favorable for fern growth. Many studies are still needed to record the diversity of ferns in Bukit Pinteir and increase species diversity to maintain environmental sustainability.
Effect of BAP and NAA on Callus Emergence Time of Dumbaya Young Leaf Explants in Vitro Walangadi, Farhana Rahmatia; Ahmad, Jusna; Pagalla, Devi Bunga; Kandowangko, Novri Youla; Febriyanti, Febriyanti
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9045

Abstract

Momordica cochinchinensis, locally known as Dumbaya in Gorontalo Province, is a traditional medicinal plant with underutilized potential due to the extremely hard morphology of its seed coat. This physical barrier limits the penetration of water, air, and nutrients, thereby reducing the success rate of seed germination and plant propagation. The challenge of propagating plants that are difficult to reproduce sexually, such as dumbaya, can be addressed through various approaches, one of which is asexual reproduction using tissue culture techniques. This study aims to address propagation constraints by applying tissue culture techniques supplemented with Plant Growth Regulators (PGRs), specifically BAP (Benzyl Amino Purine) and NAA (Naphthalene Acetic Acid), which are critical factors in successful in vitro plant regeneration. The combination of Benzyl Amino Purine (BAP) and Naphthalene Acetic Acid (NAA) is a commonly used Plant Growth Regulator (PGR) for inducing callus formation and organogenesis, where BAP is effective in stimulating shoot formation, while NAA plays a role in root induction. The research employed an experimental method using a Completely Randomized Design (CRD) with five treatment levels: H0: MS + 0 ppm NAA + 0 ppm BAP; H1: MS + 1.5 ppm NAA + 0.5 ppm BAP; H2: MS + 3.0 ppm NAA + 0.5 ppm BAP; H3: MS + 1.5 ppm NAA + 1.0 ppm BAP; and H4: MS + 3.0 ppm NAA + 1.0 ppm BAP. Each treatment was replicated three times. The results showed that treatment H1 produced the earliest callus formation, with an average callus initiation time of 7 days after planting.
In Vitro Growth Response of Porang (Amorphophallus muelleri Blume) Bulbil to Kinetin Concentration Normasari, Rut
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9050

Abstract

The plant known as porang (Amorphophallus muelleri Blume) has a high glucomannan content in its tubers. The availability of porang seeds is one of the elements influencing porang production, hence tissue culture must be developed to improve seed procurement. For porang seed propagation to be successful in vitro, growth regulators must be added. This study aims to determine the effect of adding kinetin concentration on porang shoot induction. Five treatments the addition of kinetin at doses of 0, 1, 2, 3, and 4 mg/L were included in the Non-Factorial Completely Randomized Design (CRD) experiment. All observation variables, including explant growth, shoot emergence time, percentage of shoots created, total number of shoots, and number of shoots per explant, were found to be significantly impacted by the addition of kinetin. With a shoot emergence time of 21.86 days after inoculation, 96% of the shoots produced, a total number of 108.80 shoots, and a number of shoots of 22.75 per explant, kinetin 4 mg/L was the optimal concentration for porang shoot induction.
Health Status of Natural Mangrove Forest in The Essential Ecosystem Zone Bagek Kembar Sekotong West Lombok Astika, Leni; Japa, Lalu; Santoso, Didik
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9052

Abstract

Natural mangrove forest is a part of  the essential ecosystem zone (EEZ) Bagek Kembar Sekotong West Lombok. The mangrove forest including the EEZ Bagek Kembar has been used as a destination for eduecotourism in order to introduce mainly mangrove vegetation and others flora and fauna that could found in the EEZ areas. The present of EEZ Bagek Kembar has prominent values for supporting local communities economy. However, numerous activities done in the EEZ can bring some potential effects to the living of biota, including mangrove community. This research was conducted for analysis the health status of natural mangrove forest of the EEZ Bagek Kembar.  Density and canopy covering percentage of mangrove vegetation were analyzed for determining the health status of natural mangrove forest in the EEZ bagek Kembar. The density and present covering of mangrove canopy were determined based on the resolution of Minister for the Environment No.201 year of 2004, about Standard Criteria for Mangrove Damage. The results of this research showed there were  6 species from 4 family of mangrove. The six spesies of mangrove were Avicennia marina, Rhizophora apiculata, R. mucronata, R. stylosa, Sonneratia alba dan Xylocarpus granatum. Density of mangrove vegetation was in range of 900-1.900 trees/ha with in overage of 1.411trees/ha (intermediate to good categories) and the covering percentage of mangrove canopy was 83% (dense category). Natural mangrove forest of EEZ Bagek Kembar Sekotong West Lombok was in  good health.
Estimation of Carbon Stocks in Green Open Spaces (RTH) in East Pagutan, Mataram City Nufus, Husniatun; Markum, Markum; Ningsih, Rima Vera
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9053

Abstract

The impact of global warming has made climate change a major area of ​​concern in the modern era. This phenomenon is caused by the increasing concentration of gases known as greenhouse gases (GHGs), which include carbon dioxide (CO2), methane (CH4), and nitrous oxide (N₂O). These gases increase the amount of heat trapped in the Earth's atmosphere, some of which is absorbed and some of which is reflected back to Earth. Analyzing the capacity of Pagutan Timur Green Open Space for carbon storage and carbon dioxide absorption in Mataram City is the aim of this study. Purposive and census methodologies were used in this study, which was conducted in Pagutan Timur Green Open Space, Mataram City. Qualitative and quantitative data analysis were used. The results of the study found that a total of 299.99 tons of carbon were stored, 638.27 tons of biomass were stored, and 1,100.95 tons of carbon were absorbed. This means that the total area is 8.2 hectares, or 36.49 tons of carbon stored per hectare. The conclusion is that Pagutan Timur Green Open Space can store carbon and absorb carbon dioxide in Mataram City.
The Effect of Herbal Probiotic Supplementation on the Growth Performance and Survival Rate of Nile Tilapia (Oreochromis niloticus) in a Closed Aquaculture System Aini, Nila Robiatul; Diniarti, Nanda; Diamahesa, Wastu Ayu
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9072

Abstract

Nile tilapia (Oreochromis niloticus) is a high-value aquaculture commodity with steadily increasing market demand. However, the growth performance of Nile tilapia fingerlings is often hindered by suboptimal feed quality and high mortality rates. One innovative approach to address these challenges is the incorporation of herbal probiotics as feed additives. This study aimed to evaluate the effect of herbal probiotic supplementation (Probal) on the growth, feed efficiency, and survival of Nile tilapia fingerlings. The research was conducted over 28 days at the Laboratory of Fish Production and Reproduction, Faculty of Agriculture, University of Mataram, using a Completely Randomized Design (CRD) with four treatments and three replications: P1 (control), P2 (Probal 2.5%), P3 (Probal 3%), and P4 (Probal 3.5%). The observed parameters included absolute length and weight gain, specific growth rate (SGR), feed conversion ratio (FCR), feed utilization efficiency (EPP), feed consumption, survival rate (SR), and water quality. Results showed that P4 treatment significantly outperformed other treatments in terms of length gain (2.39 cm), weight gain (13.8 g), SGR (3.26%/day), and SR (93.33%). Although no significant differences were observed in FCR and FUE, Probal supplementation was proven to enhance growth performance and survival. Therefore, herbal probiotic supplementation represents a promising and environmentally friendly strategy for sustainably improving Nile tilapia aquaculture productivity.
Effect Differences Depth on Chlorophyll Content (Kappaphycus alvarezii) Seaweed Tissue Culture Cultivated in The Waters of Gerupuk Bay Safitri, Iin; Lumbessy, Salnida Yuniarti; Cokrowati, Nunik
Jurnal Biologi Tropis Vol. 25 No. 2 (2025): April-Juni
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.v25i2.9085

Abstract

Seaweed developed through tissue culture techniques has several advantages, such as high carrageenan content, rapid growth, and resistance to disease. In seaweed cultivation, growth is influenced by photosynthetic pigments such as chlorophyll. Chlorophyll plays an important role in converting sunlight into chemical energy needed for growth. This study aims to analyze the chlorophyll content in Kappaphycus alvarezii cultivated at different depths in Gerupuk Bay waters. This study used an experimental method with a completely randomized design (CRD) consisting of 4 treatments and 3 replications, namely depths of 0 cm (P1), 5 cm (P2), 10 cm (P3), and 15 cm (P4). Results of this study indicate that planting at different depths can increase the absolute weight of K. alvarezii tissue culture ranging from 283 g to 356 g, specific growth rate between 5.72%/day to 5.91%/day, seaweed production ranging from 661 g/m2 to 832 g/m2, chlorophyll content between 5.60 mg/L to 21.89 mg/L, and phycoerythrin content between 0.027 mg/L to 0.19 mg/L. The conclusion is that the cultivation of K. alvarezii tissue culture with floating rafts at different depths can affect growth and yield. Cultivation of K. alvarezii seaweed at a depth of 0 cm using the floating raft method gave the best results, namely increasing absolute weight up to 356 g, specific growth rate up to 5.91%/day, and production up to 832 g/m2, supported by chlorophyll content of 21.89 mg/L and phycoerythrin content of 0.195 mg/L. For optimal production results, it is recommended to use a depth of 0 cm in floating raft seaweed cultivation.

Page 190 of 252 | Total Record : 2520

 188   189   190   191   192 

Filter by Year

2013 2026


Reset
Filter By Issues
All Issue Vol. 26 No. 1 (2026): Januari-Maret Vol. 25 No. 4b (2025): Special Issue Vol. 25 No. 4a (2025): Special Issue Vol. 25 No. 4 (2025): Oktober-Desember 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): January - March Vol. 23 No. 1 (2023): Special Issue 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