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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 74 Documents
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Search results for , issue "Vol. 23 No. 2 (2023): April-June" : 74 Documents clear
Rhizophoraceae Flower and Fruit Morphology as Evidence of Resilience of Mangrove Revegetation in Lembar West Lombok Ayu Diah Kusumadewi Anak Agung; Agil Al Idrus
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.4345

Abstract

The stability of the mangrove ecosystem is influenced by climate change. One indicator of the resilience of mangrove species is the emergence of reproductive organs (flowers and fruit). The purpose of this study was to describe the morphological characteristics of fruit and flowers as evidence of the resilience of mangrove revegetation in West Lombok. This research was conducted in a mangrove area on the coast of West Lombok. The samples of this study were all species of the Rhizoporaceae family from revegetation. Mangrove data which includes the names of revegetation mangrove species from the Rhizoporaceae family using the transect method. Furthermore, data analysis was carried out qualitatively and quantitatively. Qualitative analysis was conducted to describe the types of mangroves. Quantitative analysis was conducted to explain the diversity of mangrove species. Mangrove diversity can be determined using the diversity theory by Shannon-Wienner (H'). Based on the results of mangrove data which includes the names of revegetated mangrove species from the Rhizophoraceae family, three mangrove species were found, namely Rhizophora mucronate, Rhizophora stylosa, and Rhizophora apiculata which identified the morphological characteristics of the fruit and flowers. The results of this study indicate the results of the diversity index value H'1 < H'< 3, then the diversity index is categorized as medium. So it can be concluded that the morphological characteristics of fruit and flowers in the Rhizophoraceae family can be used as evidence of the resilience of mangrove revegetation results.
Evidence of The Successful Conservation of Enhalus Acoroides in Terms of The Diversity of Bivalves on The Coast of East Lombok Rizal Umami; Agil Al Idrus
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.4320

Abstract

The existence of seagrass in coastal areas can affect marine biota that live around it. Seagrass has an important role as an area of ​​care, spawning, and protection. This study aims to determine the success of conserving seagrass beds of the Enhalus acorodies species in terms of bivalve diversity on the south coast of East Lombok. The research was conducted using transect and observation methods. The data obtained were analyzed using evenness index, diversity index, and species richness. The results of the study found 10 types of Bivalves in Poton Bako. Bivalves diversity index is included in the medium category of 2,228. The evenness index of bivalves was 0.409 in the low category. Then, the species richness index is 1.653 in the low category. The species diversity of Bivalvia in seagrass beds in Poton Bako is still relatively moderate so that the sustainability of the seagrass species Enhalus acoroides can be said to be maintained. The existence of a feed source or substrate derived from the remains of seagrass is used as a source of feed. The conservation of Enhalus acoroides seagrass needs to be maintained so that it has an impact on the survival and diversity of Bivalves in the area.
Health Condition of Hard Corals on Rote Island in The Sawu National Park Conservation Area Mikael Prastowo Sesotyo Widodo; Fakhrurrozi; Rifky Nur Fahmi; Cakra Adiwijaya; Ayu Adhita Damayanti
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.4578

Abstract

Rote Ndao waters are known as a source of diversity of coral reefs in TNP Laut Sawu. Coral reefs in the area suffered considerable damage due to human activities. This study aims to determine the latest health conditions of the coral reef area in the northern region of Rote Island. Data monitoring was carried out using the underwater photo transect (UPT) method at 12 stations in the north of Rote Island. The percentage of coral reef bottom substrate cover was obtained by processing photo data using the Coral Point Count with Excel Extension-CPCe application. In addition, an assessment of the benthic component was also carried out based on the categories of percentage cover of fleshy seaweed, cover of rubble and hard coral.  The results show condition of coral reefs based on percent cover is in the low category with a hard coral (HC) value of 9.02 ± 7.16%. The highest average value of hard coral cover was found at the Tesabela station. The three highest mean values for the bottom substrate cover type at the observation sites were dead coral with algae (DCA) 32.91 ± 19.5%; Algae assemblage (FS) 17.50 ± 19.27% and Sand (S) 17.43 ± 8.91%. The health condition of coral reefs based on the benthic component shows that the coral reef ecosystem is in a damaged condition and it is difficult to recover if it is disturbed. Necessary to carry out good and efficient management in the future, namely by reducing human activities without causing damage to coral reefs and finding ways for the community to continue to benefit economically from coral reef areas in the Sewu Marine National Park.
Water Content of Stingless Bee Honey Varies by Season Andi Gita Maulidyah Indraswari Suhri; Irnayanti Bahar
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.4651

Abstract

The relative humidity of the air in the region where honey is produced has a significant influence on the moisture content of the honey. The production season, feed source, nectar type and concentration, colony strength, and physical environmental conditions are all factors that influence honey's moisture content. The goal of this study was to determine the moisture content of honey collected over the course of a year to learn more about the quality and safety of honey. One hundred fifty samples of honey gathered from Bone, Indonesia, during both the wet and dry seasons were analyzed to assess the percentage of moisture present in the honey. Honey's physical properties, microbiological value, sensory qualities, and economic worth are all affected by its moisture content. At a temperature of 25 degrees Celsius, an Abbetype standard model refractometer was used to measure the refractive index (RI) in accordance with the method recommended by the International Honey Commission. Comparing honeys produced during the wet season with those produced during the dry season revealed that there is a statistically significant variation in the quantity of moisture that is present (p = 0.0029). This demonstrated that the moisture content of honey during the dry season had a substantially different value compared to the wet season at the 0.01 level (p = 0.00024). Using the F test, it was determined that there was not a significant difference in the amount of moisture contained in specific varieties of honey that were produced during the wet seasons and those that were produced during the dry seasons.
Inventory of Bivalve in the Coastal Area of Desa Sungai Nibung West Kalimantan Ikha Safitri; Arie A. Kushadiwijayanto; Sy. Irwan Nurdiansyah; Mega Sari Juane Sofiana; Warsidah Warsidah
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.4676

Abstract

Desa Sungai Nibung, Kubu Raya Regency, has been designated as one of the conservation areas in West Kalimantan. The coastal area of this village has potential of natural resources with a high level of diversity, including bivalves. Local community catch and sell bivalves for consumption. It is due to their high nutritional content, so that they are used by the local community as food and a source of protein. Inventory of biota is the first step to manage biological resources and support the management plan for a conservation area in this village. The study aimed to determine the diversity of bivalves in the coast of Desa Sungai Nibung, West Kalimantan. The research was conducted in December 2022. Sample collection was done using an exploratory method. Bivalves were taken, then stored in the cooling box for further identification. The result showed three bivalve species, such as Polymesoda erosa, Anadara granosa, and A. antiquata.
Density of Meretrix meretrix Clamps Under Ecological Pressure on Different Substrate Texture at the Kambu River of Kendari Bay, Southeast Sulawesi Bahtiar; Muhammad Fajar Purnama
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.4684

Abstract

White clams at the mouth of the Kambu River in Kendari Bay have a preference for different substrate textures and are under ecological pressure.  This study aims to determine the density of tofu shells at the mouth of the Kambu River, Kendari Bay, Southeast Sulawesi. This research was conducted at the estuary of the Wanggu River, Kendari Bay, Southeast Sulawesi from August 2021 to January 2022. White clams were taken manually using a 1x1 m squared transect. These shellfish samples were taken 6 times in repetition/station in each month of observation. Samples found in the field were counted. Taking the texture of the aquatic substrate together with the sampling of shellfish. The results showed that the maximum density of white clams at the mouth of the Kambu River, Kendari Bay, was 7.3 ind/m2. The highest density of white clams was found at stations I and II, while the lowest density was found at station III. The highest density of shellfish was found in the type of substrate which was dominated by the fine sand fraction, while the lowest density was found in the type of substrate which was dominated by the silt fraction.
Performance of Kampung Unggul Balitnak (KUB) Chickens with the Additions of Soya Flour in the Diet Susan Mokoolang; Agustriyanto Abudi; Ramlan Pomolango; Fahrullah Fahrullah
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.4707

Abstract

Ayam Kampung Unggul Balitnak (KUB) is the result of selecting native Indonesian kampong chicken strains for six generations that have advantages in terms of maintenance due to the level of feed consumption that is less. The aim of this research was to the effect of soybean flour on the performances of Balitnak Superior Kampong Chicken (KUB). This study used a completely Randomised Design consisting of 5 treatments and 4 replicates. The treatments consisted of T1: basal + 0% soya flour; T2: basal + 2,5% soya flour; T3: basal + 5% soy flour; T4: basal + 7.5% soya flour and T5: basal + 10% soya flour. The results showed that the use of soya flour in the ration of KUB chickens gave an increase in ration consumption, weight gain and could increase the efficiency of ration use. The best concentration of soya flour in the KUB chicken ration was 10%.
The Effect Of Nano Technology Liquid Organic Fertilizer On The Growth Of Spinach (Amaranthus hybridus l.) Cultivated Hydroponically Yurico Utami; Resti Fevria; Vauzia Vauzia; Irma Leilani Eka Putri
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.4718

Abstract

Hydroponic cultivation using a wick system is one of the techniques used to increase the production of spinach (Amaranthus hybridus L.). One of the disadvantages of hydroponics is the occurrence of nutrient deposition, to reduce nutrient deposition in the wick system is to apply nanotechnology to break down particles in the planting medium and nutrients used, that the particles become smaller and more easily absorbed by plants, and reduce precipitation in the wick system. This research was conducted using the RAL method (Completely Randomized Design) which consisted of 6 treatments and 4 replications and namely Control (Well water + AB Mix), P1 (Nano technology water + 100% AB Mix), P2 (nano technology water + 25% POC+75% AB Mix), P3 (nano technology water+50% POC+50% AB Mix), P4 (nano technology water+75% POC+25% AB Mix), P5 (nano technology water+100% POC). The data obtained were analyzed by means of variance (ANOVA) and followed by the DMRT test at 5% level. The results of this study are that there is an effect of the use of nano technology liquid organic fertilizer on the growth of spinach which can be seen in the highest plant at P2 with 29.975 cm, the highest number of leaves is at P2 with 34 leaves, the highest leaf area is in the control with 13,71 cm2, the wet weight the highest was on P1 with 17 gr, the highest dry weight was on P2 with 1.3 gr. The use of nano technology liquid organic fertilizer has an influence on the growth of green spinach which is cultivated hydroponically.
The Growth of the Red Lactus (Lactuca sativa L. var. Crispa) After Using Nano Technology Liquid Organic Fertilizer Hydroponically cultivated Nia Faradila; Resti Fevria; Vauzia Vauzia; Irma Leilani Eka Putri
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.4719

Abstract

Hydroponics is a method of agriculture in which earth is not used. Among the plants amenable to hydroponic cultivation is red lettuce. One disadvantage of hydroponic cultivation is the occurrence of nutrient deposition, particularly in the wick system, where the nutrient water does not move. A technique that can lessen the amount of nutrient deposition that occurs in hydroponic systems is required in light of the aforementioned issues. Nanotechnology is one of the technologies developed. The five treatments and four replications in this study were P1 = AB Mix 100 percent, P2 = AB Mix 75 percent + POC Nano 25 percent, P3 = AB Mix 50 percent + POC Nano 50 percent, P4 = AB Mix 25 percent + POC Nano 75 percent, and P5 = POC Nano 100 percent. ANOVA (Analysis of Variance) was used to analyze the data, and the Duncan's New Multiple Range Test (DMRT) test at level 5 followed. The effects of nanotechnology-enhanced liquid organic fertilizer on red lettuce growth, including height, leaf area, number of leaves, fresh weight, and dry weight, were examined. The highest average plant is at P3 with a plant height of 36.42 cm, the highest average number of leaves is at P3 as many as 11.25 strands, the widest average leaf is at P4 with an area of ​​40.25 cm2, the average weight The highest wet weight was P4 with a weight of 17.01 g, and the highest average dry weight was P2 with a weight of 1.32 g.
Anti-Stapylococcus Epidermidis of Methanolic Extracts from Some East Lombok Medicinal Plants Dyke Gita Wirasisya; Amni Hamid; Muhamad Haikhal; Agriana Rosmalina Hidayati; Anggit Listyacahyani Sunarwidhi; Nisa Isneni Hanifa
Jurnal Biologi Tropis Vol. 23 No. 2 (2023): 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.v23i2.4732

Abstract

Wounds are structural and functional disruptions of the skin that occur as a result of an injury. Wound healing is a complex tissue repair or remodelling process in response to the injury. The most common factor that causes wounds not properly heal is infection. An infection develops when microorganisms enter the body, multiply, and trigger an immune reaction in the body. This study aims to determine the activity of Jatropha multifida L., Stachytarpheta jamaicensis (L.) Vahl, Centella asiatica (L.) Urb., Euphorbia pulcherrima Willd. ex Klotzsch, and Angelica keiskei (miq.) Koidz has long been used to treat and manage wounds in East Lombok. The plants were dried and macerated with methanol; excessed solvent was evaporated. Disc diffusions were used to determine the antibacterial activity of the plant extracts. All extracts were tested against Staphylococcus epidermidis, a common cause of wound infection. Statistically, the activity of Jatropha multifida (5;10 mg/mL), Stachytarpheta jamaicensis (10 mg/mL), Centella asiatica (10 mg/mL), Euphorbia pulcherrima (M) (5, 10 mg/mL), and Angelica keiskei (2,5; 5; 10 mg/mL) extracts were comparable with positive control. However, Angelica keiskei has a wider inhibition zone than other extracts. This discovery could be served as a basis for using plants to aid wound healing, especially to combat the interference bacteria. However, further research is needed to discover the active phytochemicals involved in the antibacterial and wound healing process.

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