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Setiarno Setiarno
Jurusan Kehutanan Fakultas Pertanian Universitas Palangka Raya
Agriculture, Biological Sciences & Forestry

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Komposisi Jenis Vegetasi dan Karakteristik Kimia Tanah pada Tapak Tegakan Sengon dan Karet di Desa Gohong, Kabupaten Pulang Pisau Setiarno Setiarno; Amelia Noviyanti; Ajun Junaedi; Wahyu Supriyati; Rosdiana Rosdiana
HUTAN TROPIKA Vol 18 No 1 (2023): Volume 18 Nomor 1 Tahun 2023
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v18i1.8750

Abstract

Plant community structure on a site has a relationship with its soil’s chemical characteristics. The research was conducted in the area of sengon and rubber stands in the administrative area of Gohong Village, Pulang Pisau District. This study aims to describe and analyze the structure of plant communities and soil chemical characteristics on the sengon and rubber stands site in Gohong Village, Pulang Pisau District. Vegetation data were collected using the stratified plot method on 9 plots placed on each stand, while soil samples for soil chemical analysis were a composite mixture of 9 drill points from each site at two depth levels, namely 0-30cm and 31-49cm. Plants found in the study site as many as 15 species belonging to 12 family, in the site of sengon stands as many as 10 species while in the site of rubber stands as many as six species. Plant species with the highest INP in the site of sengon stands are sengon and galam in the site of rubber stands are rubber. ID values range from 0.2-1.0. The depth of the peat at the research site was measured to be <50 cm with chemical characteristics of C-Organic content <5%, which was low at 4.89-6.98%, and soil acidity was very acid (pH <4.5) with a range of pH values of 3.59-3.80 and Basa Saturation (BS) was all very low with values ranging from 1.89-3.27%. Soil N-total content varied from low to medium with values ranging from 0.14-0.41%. P-availability was very low with simultaneous values of 1.18-1.41 ppm, and 0.98, and 1.19 ppm; K-dd, Ca-dd, Mg-dd, and Na-dd values were all shallow at 0.03-0.05cmol(+).kg-1, and 0.07-0.10 cmol(+).kg-1 then Ca is 0.83-1.44 cmol(+).kg-1; then Mg is the same value of 0.10 cmol(+).kg-1, and Na is 0.05-0.11 cmol(+).kg-1, while KTK is very high with a value of 49.38-60.05 cmol(+).kg-1
Makrofauna Tanah di Bawah Pohon Jelutung Rawa (Dyera polyphylla Miq) Di Kebun Benih Semai (KBS) Universitas Palangka Raya I.Y. Hutahean; Patricia Erosa Putir; Johanna Maria Rotinsulu; Penyang Penyang; Setiarno Setiarno
HUTAN TROPIKA Vol 18 No 1 (2023): Volume 18 Nomor 1 Tahun 2023
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v18i1.10000

Abstract

Decomposition of organic matter in the soil is closely related to the presence of soil macrofauna. The better the process of organic matter decomposition, the better the physical and chemical properties of the soil, which, of course, will support soil fertility in a land area. This research aims to determine the presence of soil macrofauna under Jelutung Rawa trees (Dyera polyphylla Miq) in the peatland of the Seedling Garden (KBS) at Palangka Raya University. The research method was conducted by sampling soil macrofauna through Hand sorting method at 25 observation points and Pittfall Trap method at 20 observation points. The observed and identified soil macrofauna were examined in the laboratory using identification guidelines and literature on macrofauna types. The data were analyzed using the Shannon-Wiener species diversity index formula, the Margalef species richness index, the Pielou evenness index, and the calculation of species presence frequency. The research findings revealed 24 species, 23 genera, 20 families, 7 classes, and 3 phyla of soil macrofauna, with a total of 3,579 individuals. The values of the species diversity index (H'), species richness index (Dmg), evenness index (E), and the frequency of soil macrofauna presence (F) at KBS, Palangka Raya University were as follows: H' = 2.303325269 (moderate category), Dmg = 2.810760521 (moderate category), E = 0.724759677 (fairly even category), and frequency of presence, F = 80% - 100%.
Komposisi Vegetasi, Keanekaragaman Jenis, Dan Pola Dispersi Tumbuhan Langka Pada Kawasan Laboratorium Alam Lahan Gambut Universitas Palangka Raya: The composition of vegetation, species diversity, and dispersion patterns of rare plants in the Natural Peatland Laboratory Area of the University of Palangka Raya Setiarno, Setiarno; Nababan, Suzet Rotua Tasya; Hidayat, Nisfiatul; Rotinsulu, Johanna Maria; Junaedi, Ajun
HUTAN TROPIKA Vol 20 No 1 (2025): Volume 20 Nomor 1 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i1.20219

Abstract

This research aims to describe and analyze species composition, species diversity, and dispersion patterns of rare plants, particularly those classified as critically endangered, in the Natural Laboratory of Peatland Palangka Raya University. Vegetation data collection was conducted using the quadrat plot technique based on a purposive systematic sampling. The data in the research plots were analyzed using Microsoft Excel, referring to the Important Value Index (IVI), species dominance index, diversity index, evenness index, and dispersion index. This research identified 47 types of plants (the total number of plants at the seedling, sapling, pole, and tree levels) categorized into 38 genera and 27 families. There were rare plants fall into critically endangered or endangered, namely ramin (Gonystylus bancanus) and nyatoh (Palaquium bintuluense). Nyatoh (Palaquium bintuluense), jambu-jambu (Eugenia spp.), and mangkinang (Elaeocarpus stipularis BI.) were almost always among the top five dominant species from the seedling stage to the tree stage at various peat thickness levels, but there was no concentration of species dominance in the plot. The majority of the species diversity index values (Shannon-Wiener) in the plots were classified as high (H’>3), indicating that the forest ecosystem conditions at the location are relatively stable. The evenness index of species in all plant communities and peat thickness levels fell into almost uniform abundance category (E = 0.76 – 0.95). The dispersion pattern of the population of critically endangered rare plants, such as Gonystylus bancanus (Mig.) and Palquium bintulense, at various peat thickness levels was clustered. In terms of growth stages, the population of Palquium bintulense was entirely clustered, while that of Gonystylus bancanus (Mig.) was only clustered at the sapling stage, but at the seedling and pole stages, it had random pattern.
Karakteristik Vegetasi pada Areal Berhutan di Sekitar Hak Guna Usaha Perkebunan Kelapa Sawit: Vegetation Characteristics in Forest Areas Surrounding Palm Oil Plantation Concession Area Setiarno, Setiarno; Junaedi, Ajun; Hartati, Bunga Resa; S, Muhammad Luthfi
JURNAL HUTAN TROPIKA Vol 20 No 2 (2025): Volume 20 Nomor 2 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i2.23116

Abstract

This study was aimed to analyze and describe the characteristics of vegetation in forested areas in and around the Cultivation Rights area of oil palm plantations (PT. GAP and PT. CWJU). Vegetation data was collected using a quadratic plot technique, where the plot itself was assigned using purposive systematic sampling. Vegetation data in the research plots were analyzed using Microsoft Excel by involving index calculations, namely the Important Value Index/INP or Important Species Value/NPJ, species dominance index, diversity index, richness index, evenness index, and species similarity index. The results of the study in the observation plots have recorded 43 species of woody plants that can be grouped into 34 genera and 21 families. Eugenia uniflora and Shorea macrantha at the research site are more dominant in all growth phases. It is indicated that there is no concentration of dominance by a species in the research plot (C = 0.10 – 0.14), the H’ value is classified as moderate/moderate stability (1 < H’ < 3.22) which reflects sufficient species diversity and relative abundance, the richness index ranges from 1.90 – 2.32 which is generally low (R < 3.5), the evenness index ranges from fairly even to almost even (E = 0.62 – 0.94), and the species similarity index of 0.61 is classified as moderate. Keywords: vegetation, plant species, plant community
Keanekaragaman Tumbuhan dan Preferensi Pakan Monyet Ekor Panjang di Kawasan Telaga Warna Bogor : Diversity of Plants Used as Food by Long-Tailed Monkeys in the Telaga Warna Area of Bogor Hartati, Bunga Resa; Marpaung, Sutan Sahala Muda; Setiarno, Setiarno; Trianingtyas, Andhira; Samad, Radhiatunnisa S; Putra, Rizky Auliansyah; Putro, Dhymas Sulistyono
JURNAL HUTAN TROPIKA Vol 20 No 2 (2025): Volume 20 Nomor 2 Tahun 2025
Publisher : Jurusan Kehutanan, Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/jht.v20i2.23971

Abstract

Telaga Warna Bogor is a conservation area consisting of a Nature Reserve (CA) and Telaga Warna Nature Park (TWA) which harbors potential flora and fauna. The Long-tailed Macaque is one of the protected animals in the area and, with the rise of its IUCN conservation status, has been included in the red list of endangered species. The purpose of this study was to determine the food preferences of Long-tailed Macaques in the Telaga Warna area. The method used to determine food preferences was the line transect method, while the potential food trees were identified using the grid method, supplemented by a literature study for additional data on food preferences. The data analysis used was descriptive and qualitative. The food plant data was analyzed to determine density, frequency, dominance, and INP. The results of the study showed that the INP analysis of Villebrunea rubescens (42.21), Slonea sigun (33.82), and Castanopsis Argentea (22.91) had the highest values of the 17 food trees, indicating that these three plant species are quite abundant and have high potential as food for long-tailed macaques. The parts of plants most frequently eaten by long-tailed macaques were the fruit (47%), followed by the flowers (29%), and the leaves (24%). KEYWORDS Plant diversity, food preferences, long-tailed macaques, Telaga Warna Bogor.
Co-Authors Ajun Junaedi Amelia Noviyanti Dhymas Sulistyono Putro Hartati, Bunga Resa Hidayat, Nisfiatul I.Y. Hutahean Johanna Maria Rotinsulu Junaedi, Ajun Nababan, Suzet Rotua Tasya Patricia Erosa Putir Penyang, Penyang Putra, Rizky Auliansyah Rosdiana Rosdiana S, Muhammad Luthfi Samad, Radhiatunnisa S Trianingtyas, Andhira Wahyu Supriyati