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Journal : Jurnal Biologi Tropis

Effectiveness of Carica Papaya Leaves and Tinospora Crispa Stems Against Paracoccus Marginatus in Eucalyptus Nursery Irfani, Ewi; Aditia, Windy Sukma; Mardhiansyah, M.; Pebriandi, Pebriandi
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.v25i2.8605

Abstract

One of the pests that attacks Eucalyptus pellita is Paracoccus marginatus. Currently, chemical pesticides are used to control these pests, which can harm health and the environment. As a result, we need a more environmentally friendly alternative biopesticides that comes from a combination of Carica papaya leaf and Tinospora crispa stem extracts. The aim of this research was to determine the effect of Carica papaya leaf and Tinospora crispa stem extracts on Paracoccus marginatus pests in eucalyptus nurseries and to determine the best concentration for controlling Paracoccus marginatus pestsThe experiment used a completely randomized design (CRD) with 4 treatments and 4 replications. The treatments consisted of different concentrations of Carica papaya leaf and Tinospora crispa stem extracts (20, 40, 60, and 80 g/l). This was followed by a DNMRT test at 5% confidence level. The results showed that the combination of Carica papaya leaf and Tinospora crispa stem extracts significantly affected Paracoccus marginatus mortality. The best concentration of the extract mixture was 80 g/l, which resulted in the fastest mortality rate, with an LT50 of 26.41 hours and 100% total mortality.
Understory Plant Species Diversity in Pine Tree Stands in Bukit Cadika Pine Forest Bangkinang Shobby, Afiyah; Yoza, Defri; Pebriandi, Pebriandi
Jurnal Biologi Tropis Vol. 25 No. 3 (2025): Juli-September
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.v25i3.9254

Abstract

Bukit Cadika Pine Forest Bangkinang is one of the pine forests in Bangkinang Riau. Pine is a type of tree that is classified as a fast-growing type and does not require special requirements in its planting, so pine can spread naturally to areas south of the equator. The existence of understory plants can also function as soil protectors from rain grains and surface flow and play a role in increasing organic matter in the soil. This study aims to determine the diversity of understory plant species in Bukit Cadika Pine Forest stands Bangkinang. Data collection methods and lower plant samples were carried out in pine stands through direct field observations using the path/transect method. The placement of paths in this study was carried out using purposive sampling technique with a total of 5 paths made and a distance of 1 m between paths with a path length of 100 m. The data obtained in the field were analyzed using the data collection method. Data obtained in the field were analyzed using the Shannon-Wiener diversity index, species evenness index and important value index. The conclusion in this study found as many as 13 species with a total of 201 individuals and 12 families that were successfully identified and the species diversity index in Bukit Cadika pine forest stands amounted to 2.18 which is included in the moderate category.
Mangrove Species Diversity as a Coastal Ecosystem Buffer in Sonde Village, Rangsang Pesisir District, Meranti Islands Regency Pebriandi, Pebriandi; Aprianto, M. Ikhsan; Sribudiani, Evi; Somadona, Sonia; Mardhiansyah, Muhammad; Darlis, Viny Volcherina
Jurnal Biologi Tropis Vol. 24 No. 4 (2024): Oktober - Desember
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.v24i4.7651

Abstract

Mangrove diversity in Indonesia, including in Sonde Village, Rangsang Pesisir District, and Meranti Islands Regency, is one of the country's assets that is very important both ecologically, socially, and economically. This study aims to determine the diversity of mangrove species in the Tuah Sonde Forest Farmer Group Community Forest area. The method used was transect with random start with vegetation data collection conducted from June to July 2022. Data analysis includes quantitative descriptive analysis by calculating the Important Value Index (IVI) and the Shannon-Wiener Diversity Index (H'). The results showed that there were six mangrove species found in Sonde Village, namely Rhizophora apiculata, Ceriops tangal, Bruguiera cylindrica, Xylocarpus granatum, Sonneratia alba, and Avicennia marina. Sonneratia alba species dominated at the tree level with the highest INP of 167.66%, while Rhizophora apiculata dominated at the seedling and sapling levels with INPs of 111.52% and 76.74% respectively. The species diversity index (H') at the seedling and sapling level shows a medium category, while at the tree level is in the low category. Mangrove species diversity in Sonde Village is influenced by environmental factors such as tides and human activities, especially illegal logging which has the potential to reduce the sustainability of mangrove ecosystems in the region.
Identification of The Level of Pest and Disease Damage at The BPDASHL Indragiri Rokan Nursery, Pekanbaru, Riau Mardhiansyah, M.; Hamido, Dhanu; Pebriandi, Pebriandi; Irfani, Ewi; Lestari, Ika
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): Januari - Maret
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.v25i1.8118

Abstract

Pests and diseases are recurring issues in the cultivation of forest plant seedlings, as they can reduce seedling quality and lead to economic losses due to seedling mortality. Identifying the types of pests and diseases is crucial for implementing more effective, efficient, and environmentally friendly control measures to maintain seedling quality. The methodology used in this study was a field survey with direct observation of seedlings affected by pests and diseases. Data collected included the types of pests and diseases observed in various seedlings, such as Annona muricata, Albizia saman, Archidendron pauciflorum, Parkia speciosa, Nephelium lappaceum, Pometia pinnata, Persea americana, Durio zibethinus, Garcinia mangostana, and Artocarpus heterophyllus. Observations were conducted over an eight-week period. The damage caused by pests and diseases in the BPDASHL nursery was categorized as relatively mild. Common pests identified included beetles, borers, and mealybugs. Meanwhile, diseases frequently observed were yellowing leaves, sprout collapse, stunted growth, and leaf spot.
Structure and Composition of Urban Forest Stands of Pulau Bungin, Teluk Kuantan City, Kuantan Singingi District Pebriandi, Pebriandi; Suhardianto, Suhardianto; Yoza, Defri
Jurnal Biologi Tropis Vol. 25 No. 1 (2025): Januari - Maret
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.v25i1.8434

Abstract

The existence of urban forests should be referred to as a place to preserve the environment, seeing from the start of the density of settlements that cause less and less space as a place to preserve the environment. The Bungin Island City Forest area in Koto Teluk Kuantan Village is one of the potential tourist destination objects to be offered when tourists visit Jalur City. The aim of this research was to examine the structure and composition of the stands in the Bungin Island City Forest, located in Kuantan Singingi Regency. The research method used systematic sampling method by collecting data directly at the research location. Variables observed were the number of individuals, diameter and height of trees. Vegetation data collection was carried out using the creation of a square plot unit measuring 20 m x 20 m with the determination of the plot location using systematic sampling with random start, namely taking sample plots systematically and randomly started. The data that has been obtained is analyzed descriptively quantitative which is done to obtain a clear picture of the state of the urban forest. The results of the study obtained 23 plant species in the urban forest of Bungin Island with the highest importance value index (INP) is duku plant with a value of 47,10 at the tree level, which means that this plant is the dominant species in the urban forest of Bungin Island. The conclusion of this study shows that the urban forest of Bungin Island is composed of 23 species grouped in 20 families and the composition of the stand is composed of 228 plants with the highest canopy statification in stratum C (subcanopy) followed by stratum B (canopy), stratum D (understory) and stratum A (emergent).
Co-Authors Aditia, Windy Sukma Ahmad Ahmad Ahmad Baiquni Ahmad Baiquni Rangkuti Akbar Alldhu Dilas Alfini Amelina Putri Ananda, Taufik Angga Pramana Angraini, Riris Anthoni Hamzah Aprianto, M. Ikhsan Arida Susilowati Iswanto Arsetia, Dini Aulia R. Arya Arismaya Metananda Aufar, Wafid Muhammad Azizah, Wafiq Bakara, Jhon Pontas Cahyani, Putri Darli, Viny Volcherina Defri Yoza Dike Adelia Eka Indra Setiawan Esty Octiana Sari Evi Sribudiani Ewi Irfani Fatriansyah, Aulia Fernando, Git Fifi Puspita Haliyani, Risda Hamido, Dhanu harahap, ari azhari Harnuda, Muhammad Rafi Hasiolan Siahaan Hasnah, Nur Helni Anggraini HELNI ANGGRAINI Idwar, Idwar Ika Lestari Ika Lestari, Ika Ilham Muhammad Imelda Yunita Indahsari, Lili Nur Irman Tinjo Khikmanisa, Tiwi Kurniawan, M Andry Lestiawati M Andry Kurniawan Maras, Iqbal Masruri, Niskan Walid Meki Herlon Meta Riana Akma Metananda, Arya Arismaya Mhd Akbar Sinabel Muhammad AlFajri Muhammad Buce Saleh Muhammad Mardhiansyah Muhammad Miftahul Roziqin Mukhamadun Mukhamadun ' Mukhamadun, Mukhamadun Mulyani, Putri Cahaya Nila Salsabila Nila Salsabila Niskan Walid Masruri Niskan Walid Masruri Nur Hasnah Nur Suhada Nur Suhada, Nur Nurhaliza Nurianti, Nurianti Nurul Qomar Oktorini, Yosi Omo Rusdiana Pajri, Islami Pradja Nur Isnaeini Pradja Nur Isnaeini Putra, Ezza Islami Putri Cahyani Putri, Nur Aprilia Putriani, Chirin Ni’mah Rahayu, Rini Ramadhan, Farhan Rangkuti, Ahmad Baiquni Rangkuti, Rangkuti Rezki Bela Putra Rezki Bela Putra Rizka, Darli Safitri, Maharani Sahab, Ahmad Sandi, Utami Nur Saputra, Alfahri Bayu Sartika, Reci Sepriza, Nurul Setiawan, Eka Indra Shobby, Afiyah Sholihin, Khoirul Sihombing, Venecia Margaretha Silitonga, Ester Marisi Somadona, Sonia Suhardianto, Suhardianto Syahputra, Yayan Aldy Syarifa Nadira Syarifa Nadira Syukri, Zulhusni Teguh Imanto Wan Muhammad Yunus, Wan Muhammad Wati, Sulastri Wirda Aprilia Ningsih Wishnu Sukmantoro Yossi Oktorini Yulanda, Novia Oktari Yunandra Zulfa, Khusyairi