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All Journal Biospecies Bioscience Jurnal Biologi Tropis JURNAL PENDIDIKAN TAMBUSAI PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Pelita Eksakta JURNAL SAINS dan INOVASI PERIKANAN Jurnal Serambi Biologi
Kardiman, Reki
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Immunology & microbiology Law, Crime, Criminology & Criminal Justice Mathematics Medicine & Pharmacology Physics Public Health Social Sciences Other

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Journal : Bioscience

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Litter Decomposition on the Old Parak Ecosystem in Maninjau West Sumatra Indonesia Kardiman, Reki; Simangunsong, David
Bioscience Vol 8, No 2 (2024): Biology
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bsc.v8i2.125864

Abstract

This study aimed to analyze the rate of litter decomposition on the old parak ecosystem in Maninjau, Tanjung Raya District, Agam Regency, West Sumatra Indonesia. Data were collected at four different vaillages, each was located at one compas point surrounding the Maninjau Lake. The sites were purposively selected according to the zonation of vegetation, where the parak ecosystem appeared between paddy field and forest. Three of 20x20 m plots were established at each location, in which one of 1x1 meter subplot was established in the centre, given 12 subplots in total. All litters within the subplots were collected and measued the wet weight, about 800 grams of the litters were collected, 200 grams of it were dried, while other 600 grams were placed into six litter bags (100 grams each) and placed again at each subplot. Two litter bags were collected each month, dried and analyzed the rate and percentage of decomposition. The results showed that the average litter decomposition rate at parak ecosystem in Maninjau was 0.6 gr/day, and 50% litters were decompossed in 90 days. The rate of decomposition of litter varied between loactions, where the lowest decomposition rate was found at the western part of the Maninjau Lake, especially for leaves litters. This study revealed that a park ecosystem in Maninjau requires six month decompotition to completely change litters into soil, and with about 6.4 tons of litters per hectar, resulting 5 tons of biomass, this provides 5 tons of organic matters for each hectare of parak ecosystem.
Conflict between Trees and Infrastructures in the Main Campus ofState University ofPadang Rahman, Natasya Aulia; Kardiman, Reki; Roza, Sri Yenica
Bioscience Vol 8, No 2 (2024): Biology
Publisher : UNIVERSITAS NEGERI PADANG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/bsc.v8i2.125870

Abstract

Infrastructure is major supporting factor development a state and trees are planted throughoutthe infrastructure for the green aspect, which then promotes a conflict. Conflicts defined as tree growth atadjacent infrastructure,growth of roots causing a damages as in the main campus of State University ofPadang. This study to investigate the conflict between trees and infrastructure in the main campus of StateUniversityofPadang.Treespecies,diameter,size,canopy,distancetreetoinfrastructure,numberinfrastructureandtypeinfrastructureweresampledfrom195treesconflictandnotconflict.Alltreesbelongingto 12 species diameterfrom 26,75 cmto 114,01 cm(58,8392 cm onaverage), and canopyfrom300 m² to 825 m² (555,7692 m² on average). Trees planted to concrete by 71%, 33% conflicted, paving blockby 21%, 12% conflicted, and 8% to asphalt with 55% conflicted. Conflicted trees varied species but mostlyplanted <1 m from infrastructures, tended to larger diameter and narrow canopy cover. This study showedthere is 50% risk infrastucture damage planted close and tree species with lower potential conflict prioritizedforshade treesacrossinfrastructure. 
Co-Authors Achyar, Afifatul Aini, Quratul Athiyah Khairunnisa, Febby Azwir Anhar Desmayanti, Resti Djoelvinanda, Habibullah Dwi Hilda Putri Dwi Puspita Putri Fadhlurrohman, Reza Fadilaturahmah Fadilaturahmah Fardilla, Midratul Fevria, Resti Filza Yulina Ade Harli Wahyu Salman Irma Leilani Eka Putri Khumaira, Kayla Anaya Leilani Eka Putri, Irma Lesmina, Fadilla Mardaniyah, Annisa Miftahul Jannah Moralita Chatri Nazhifah, Naura Novita, Yeni Pebriyeni, Silvi Pratama, Chelsylia Dara Pratama, Sandi Fransisco Putri, Cici Adelia Putri, Irma Leilani Eka Rahman, Natasya Aulia Rahmi Kurniati Roza, Sri Yenica Satria, Rijal Selaras, Ganda Hijrah Simangunsong, David Siti Aisyah Suci Ramadhani, Suci Sulaeman, Nabila Sunarsan, Debra Fortuna Syahfitri, Aulia Insyani Taufiq, Muhammad Afif Valofi, Nagra Aulia Vauzia, Vauzia Violita Violita Wawan Sujarwo Wira Aina, Zahratul Yunita, Aulia Zainal Umar, Muhammad