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All Journal Jurnal Online Mahasiswa (JOM) Bidang Matematika dan Ilmu Pengetahuan Alam Bioeksperimen: Jurnal Penelitian Biologi Jurnal Pengabdian UntukMu NegeRI JURNAL ENGGANO Jurnal Biologi Tropis Dinamika Lingkungan Indonesia Journal of Community Engagement Research for Sustainability Jurnal Karya Abdi Masyarakat Biosaintifika: Journal of Biology & Biology Education
Radith Mahatma
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Environmental Science Health Professions Immunology & microbiology Law, Crime, Criminology & Criminal Justice Mathematics Nursing Public Health Social Sciences Other

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Structure of Mangrove Vegetation Patterns Based on Salinity Differences in Jangkang River, Bengkalis Island, Riau Ria Saputra, Eki; Setyawatiningsih, Sri Catur; Mahatma, Radith
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.v24i4.7767

Abstract

Mangroves in Sungai Jangkang, Bengkalis Island, are affected by anthropogenic activities and environmental factors, with salinity being the most influential environmental factor. This study aims to describe the structure of mangrove vegetation patterns based on variations in salinity. The research was conducted in the Jangkang River, Bengkalis Island, in March 2024. Representative areas of three salinity zones along upstream, midstream, and downstream were selected. The species present were assessed for density, frequency, dominance, and importance index. The salinity in the upstream section was 5 ‰, in the midstream 8 ‰, and in the downstream 18 ‰. Four species from four families were found in the upstream section, three species from three families in the midstream, and eight species from seven families in the downstream section. Rhizophora apiculata was the most dominant species and had the highest importance index (INP) in the Jangkang River. Mangrove species diversity in the upstream and midstream sections of the Jangkang River was classified as low (H' < 1), while the downstream section had moderate diversity (1 < H' < 3).
Revitalisasi Usaha Budidaya Lebah Kelulut di Desa Tanjung Sari Kabupaten Kepulauan Meranti, Provinsi Riau: Masalah dan Solusinya Muhammad, Ahmad; Qomar, Nurul; Mahatma, Radith; Pranata, Syafroni
Journal of Community Engagement Research for Sustainability Vol. 2 No. 2 (2022): Maret
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (449.237 KB) | DOI: 10.31258/cers.2.2.84-92

Abstract

Meliponiculture emerged at Tanjung Sari, a village in Kepulauan Meranti Regency, Riau Province, in 2016 and has been growing thereafter. According to our observations there were at least three main obstacles faced by colony owners at this village, i.e. colony loss, low honey production, and marketing-related issues. We attempted to address these issues through a participatory program involving colony owners of the village. Colony loss had been mainly caused by swarming and mortality and was believed to have been triggered by inappropriate conditions of the maintenance (such as too much exposure to the sun and rain as well as unrepelled diturbances by other animals. Such conditions had also been associated with low honey production. Therefore we encouraged villagers to improve the conditions by providing supporter and roof for their colonies. In regard with marketing issues, we encouraged villagers to establish a honey cooperative under BUMDES, which should regulate honey price, absorb the produced honey, and also handle its marketing to outer counterparts. In addition, the cooperative should facilitate communications between members and information disemination, and mediate negotiation with potential buyers. The benefits gained by participants were: (1) the improvement of technical knowledge of colony maintenance; (2) the improvement of colony maintenance quality that would reduce risk of colony loss; and (3) the establishment of a cooperative that would be a body that would facilitate the necessities previously mentioned. The present paper describes the processes and results in details.
Mangrove Conditions Using Drones Along Several Rivers in Bengkalis Island, Riau, Indonesia Eki Ria Saputra; Sri Catur Setyawatiningsih; Radith Mahatma; Kozan, Osamu
Biosaintifika: Journal of Biology & Biology Education Vol. 16 No. 3 (2024): December 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/biosaintifika.v16i3.16325

Abstract

Mangroves on Bengkalis Island experienced a decline between 2000 and 2019. This decrease in mangrove forest area was caused by anthropogenic activities and natural factors, such as coastal erosion. The objective of this study is to assess the current condition of mangroves on Bengkalis Island, Riau, Indonesia. The research was conducted in March 2024 across four rivers on Bengkalis Island, with each river containing three research stations: upstream, midstream, and downstream. Data collection involved capturing aerial photos of mangroves using drones over 100 m x 100 m. The photos were analyzed using the supervised image classification method to identify and assess mangrove land cover. A total of 11 mangrove species were identified along the rivers. The most widely distributed species across all locations were Rhizophora apiculata and Xylocarpus granatum. Canopy cover at all research sites was classified as dense, with coverage exceeding 75%. This study provides crucial information about the condition of mangroves on Bengkalis Island, serving as a guideline for future restoration efforts.
Dragonfly Inventory and Activity in Kasang Kulim Zoo Area, Riau Delithalia, Miranda; Mahatma, Radith
Bioeksperimen: Jurnal Penelitian Biologi Vol 9, No 2: September 2023
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/bioeksperimen.v9i2.23006

Abstract

Dragonflies have an important role in ecosystem balance as biological control agents and environmental bioindicators because they are sensitive to changes in water quality. Community activities at the Kasang Kulim Zoo can cause changes to water quality. When habitat conditions change, Odonata (dragonfly) will also changes, both in distribution and diversity. This study aims to identify, invent and determine the activity time of dragonflies found in the Kasang Kulim Zoo area. Research was conducted at the end of March to mid-April 2023. Sampling used exploration method by using insect nets. The results obtained a total of 152 individuals belonging to 14 species, four families and two suborders (Anisoptera and Zygoptera). The family Libellulidae totaled eight species, Gomphidae one species, Coenagrionidae four species and Platycnemididae one species. The Libellulidae family are active from 08.00 am to 05.00 pm, while dragonfly species from the Gomphidae family and the Zygoptera suborder are active from 08.00 am to 03.00 pm. Dragonfly activity is influenced by air temperature, air humidity and sunlight intensity.
Co-Authors Aditya Apmayasari Agrina, Agrina Agus Sutikno Ahmad Muhammad Aslim Rasyad Besri Nasrul Bintal Amin Chairul Chairul Dahlan Tampubolon Delithalia, Miranda Dyah Iriani Eki Ria Saputra Fadel Nugraha Febrialismanto, Febrialismanto Geovani Meiwanda Hengki Firmanda Indra Lesmana Juliana Juliana Khairijon &#039; Nery Sofiyanti Nurul Qomar OSAMU KOZAN, OSAMU Pranata, Syafroni Ria Saputra, Eki Rikhi Riady Romi Kurniadi Roza Elvyra Siti Rahayu Sri Catur Setyawatiningsih Sri Endang Kornita Suryani &#039; Syafriadiman, Syafriadiman Syauli Ashari Khati Tri Handro Pramono, Tri Handro Windarti &#039; Yusfiati, Yusfiati Zahtamal Zahtamal