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ANALISIS VEGETASI POHON DI KAWASAN HUTAN BATU BUSUAK PADANG Yuhendri, Rival; Mukhtar, Erizal; Safitri, Elza
Pendidikan Biologi Vol 2, No 2 (2013): Jurnal Mahasiswa Pendidikan Biologi Genap 2013-2014
Publisher : STKIP PGRI Sumbar

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ABSTRACTBatu BusuakÂ forest area is located in the district Pauah of Padang. On July 24th landslide and flood have been destroyed to the forest and caused the forest structure changes. Based on above reason it is important to analyze the forest structure in Batu Busuak Padang. in order to clarify vegetation analyzes we applied transect along undegraded and degraded area using the quadrant method. The tree composition at degraded areas was 22 families, 49 species and 200 individuals. Further more 31 families, 84 species and 200 individual were found at degraded area. Areca chatecu has the highest important value index on degraded area was 20.64%. Porterandia anisophylla was the lowest one (1.7%). Xerospermum sp has the highest important value index at undegraded area (15.27%) and Micros florida was the lowest one (1.24%).Â

KOMPOSISI JENIS DAN CADANGAN KARBON DI HUTAN TROPIS DATARAN RENDAH, ULU GADUT, SUMATERA BARAT [Species Composition and Carbon Stock in Tropical Lowland Forest, Ulu Gadut, West Sumatra] Suwardi, Adi Bejo; Mukhtar, Erizal; Syamsuardi, Syamsuardi
BERITA BIOLOGI Vol 12, No 2 (2013)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v12i2.529

Tropical lowland forest is one type of forest ecosystem that dominated most of Sumatra areal and retained carbon terrestrial within.Tropical lowland forest has the highest risk of damage than other forest types. The aimed of study is to determine species composition and carbon stock in tropical lowland forest, Ulu Gadut, West Sumatra. This study was conducted on June to October 2012 at 1 ha Pinang-Pinang permanent plot. Tree biomass was measured by using the non destructive sampling method. All trees with stem diameter at breast height (dbh) = 8 cm were measured diameter and were recorded the species of trees.As much as 852 individuals of trees, which were consisting of 45 families and 155 species with DBH = 8 cm were found in Pinang-Pinang permanent plot. Nephelium juglandifolium Blume, Swintonia schwenckii (T. & B.) Kurz,Syzygium sp.,Microcos florida (Miq.) Burret, Palaquium sp.,Cleistanthus glandulosus Jabl., Hopea dryobalanoides Miq., Mastixia trichotoma Blume, Calophyllum soulattri Burm. f. and Shorea maxiwelliana King were dominant based on -1 -1 Importance Value Index(IVI). Trees biomass and carbon stock in the study site are around 482.75 ton ha and 241.38 ton C ha respectively.

The Diversity and Diameter Growth Rate of Sprouting-Type Tree in Bukit Pinang-Pinang Forest Permanent Plots Ade Ayu Oksari; Irvan Fadli Wanda; Erizal Mukhtar; Chairul Chairul
Jurnal Biodjati Vol 4, No 2 (2019): November
Publisher : UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/biodjati.v4i2.4728

The process of forest regeneration can take place within a certain period of time. Sprouting is a form of strategy for in adapting to its environment for success in regenerating. The Research on the diversity and diameter growth rate of sprouting-type tree in Bukit Pinang-pinang forest permanent plots, West Sumatra was carried out from October 2012 to December 2016 in the forest of Bukit Pinang-Pinang, West Sumatra and Herbarium Department of Biology, Universitas Andalas, Padang. This research was conducted using a survey method by census. The parameters analyzed were plant species composition, Morishita Index, Mann-Whitney test, Regression and Correlation test as well as RDGR (Relative Diameter of Growth Rate). The result of experiment was found 40 species of trees sprouting type in forest permanent plot Bukit Pinang-Pinang. The pattern of sprouting type trees distribution in the study locations was found to have a clustered, random and uniform pattern. Relative Diameter Growth Rate (RDGR) of 40 sprouting types of trees in the Bukit Pinang-Pinang forest permanent plots ranged from 0.003 cm/cm/year to 0.0288 cm/cm/year. Altitude did not affect RDGR of an individual tree sprouting type for 31 years

Perubahan Distribusi Populasi Dari Schismatoglottis lancifolia Hall. et Englar di Hutan Bukit Pinang-pinang - Khairinnisa; Erizal Mukhtar; - Chairul
Jurnal Biologi Universitas Andalas Vol 3, No 1 (2014)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.3.1.%p.2014

An investigation on the changes of individual number and distribution pattern of Schismatoglottis lancifolia Hall. et Englar at permanent forest plots in Bukit Pinang-Pinang has been carried out from September 2012 to December 2012. The results showed that populations of Schismatoglottis lancifolia was 51.63% decreased when compared to the previous observations in 1985. The distribution pattern of the species was clumped (Morishita Index : 3.2) that was similar pattern reported in 1985. Distribution pattern was influenced by relative light intensity due to topography variations. Keywords: Bukit Pinang-pinang, distribution population, Schismatoglottis lancifolia.

Dinamika Populasi Anakan Pohon Klimaks Calophyllum soulattri Burm dan Swintonia schwenkii T.&B Di Hutan Bukit Pinang-Pinang Sari Fatul Husna; Erizal Mukhtar; Chairul Mahmud
Jurnal Biologi Universitas Andalas Vol 4, No 1 (2015)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.4.1.%p.2015

A study on population dynamics of Calophyllum soulattri Burm and Swintonia schwenkii T.&B in Pinang-Pinang rain forest have been carried out from September 2012 to Februari 2013 by using descriptive method. Data were collected after 23 years of demographic data available. We found that the highest seedling mortality of Calophyllum soulattri was at the height class of 11-30 cm (9.4 %) and the lowest was at the height class of 71- 80 cm (3.4 %). The heighest seedling mortality of Swintonia schwenkii was at the height class of 11-20 cm (10.3 %) and the lowest was at height class 51-60 cm (2.9 %). Relative height growth rate of Calophyllum soulattri seedling was at the height class of 21-30 cm (0.38 cm/cm/yr). Whereas relative height growth rate of Swintonia schwenkii seedling was at the height class of 31-40 cm (0.21 cm/cm/yr). Keywords: dynamics population, Calophyllum soulattri, Swintonia schwenkii,mortality, relative high growth rate.

Komposisi dan Struktur Seedling dan Sapling pada Lahan Pra dan Pasca Tambang Batubara PT. SLN di Kabupaten Dharmasraya - Solviana; Erizal Mukhtar; - Chairul
Jurnal Biologi Universitas Andalas Vol 1, No 2 (2012)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.1.2.%p.2012

Research about composition and structure seedling and sapling at pre and post coal mining PT. SLN have been carried out from April to July 2012 by using the belt transect with quadrate plot of size 10 x 10 m2. The results showed the composition of seedling at pre-mining was 6 families, 6 genera, 6 species and 38 individuals. In case of the composition of post coal mining was 4 families, 3 genera, 5 species and 20 individuals. Furthermore, the composition of sapling at pre coal mining was 12 families, 35 genera, 43 species and 304 individuals. In case of the composition of post coal mining was 6 families, 8 genera, 10 species and 102 individuals. The highest importance value for seedling at pre mining was Canthium dicoccum (47.37 %) and at post mining was Clibadium surinamense (58.18 %). The highest importance value for sapling at pre mining was Hevea brasiliensis (20.27 %) and at post mining was Macaranga tanarius (46.11 %). Diversity index of seedling at pre mining was 1.69 % and in post-mining was 1.55 %, where as for the sapling at pre mining was 3.51 % and at post mining was 2.16%. Index similarity seedling and sapling were 18 % and 3.8 % respectively.Keyword:composition, structure, pre and post coal mining, seedling, sapling

Above Ground Biomass Estimation of Syzygium aromaticum using structure from motion (SfM) derived from Unmanned Aerial Vehicle in Paninggahan Agroforest Area, West Sumatra Try Surya Harapan; Ahsanul Husna; Thoriq Alfath Febriamansyah; Mahdi Mutashim; Andri Saputra; Ahmad Taufiq; Erizal Mukhtar
Jurnal Biologi Universitas Andalas Vol 9, No 1 (2021)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jbioua.9.1.39-46.2021

Above ground biomass (AGB) is all living organic matters above the soil including stem, seed and leaves. This study aimed to estimate the individual clove (Syzygium aromaticum) and it’s above ground biomass using Unmanned Aerial Vehicle in the Agroforestry area in Paninggahan, West Sumatra. This study used a photogrammetry method to calculate trees and estimated the AGB. We detected 257 numbers of trees based on aerial image analysis and observed 270 after we validated on ground check in the field. The result was slightly different between estimated AGB from UAV and observed AGB from our ground validation. The estimated AGB was 5.9 ton/ Ha where the surveyed AGB was 5.6 ton/Ha. The difference between estimated AGB and observed AGB was 0.3 ton/Ha.

KOMPOSISI JENIS DAN CADANGAN KARBON DI HUTAN TROPIS DATARAN RENDAH, ULU GADUT, SUMATERA BARAT Adi Bejo Suwardi; Erizal Mukhtar; Syamsuardi Syamsuardi
BERITA BIOLOGI Vol 12, No 2 (2013)
Publisher : Research Center for Biology-Indonesian Institute of Sciences

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/beritabiologi.v12i2.529

Tropical lowland forest is one type of forest ecosystem that dominated most of Sumatra areal and retained carbon terrestrial within.Tropical lowland forest has the highest risk of damage than other forest types. The aimed of study is to determine species composition and carbon stock in tropical lowland forest, Ulu Gadut, West Sumatra. This study was conducted on June to October 2012 at 1 ha Pinang-Pinang permanent plot. Tree biomass was measured by using the non destructive sampling method. All trees with stem diameter at breast height (dbh) = 8 cm were measured diameter and were recorded the species of trees.As much as 852 individuals of trees, which were consisting of 45 families and 155 species with DBH = 8 cm were found in Pinang-Pinang permanent plot. Nephelium juglandifolium Blume, Swintonia schwenckii (T. & B.) Kurz,Syzygium sp.,Microcos florida (Miq.) Burret, Palaquium sp.,Cleistanthus glandulosus Jabl., Hopea dryobalanoides Miq., Mastixia trichotoma Blume, Calophyllum soulattri Burm. f. and Shorea maxiwelliana King were dominant based on -1 -1 Importance Value Index(IVI). Trees biomass and carbon stock in the study site are around 482.75 ton ha and 241.38 ton C ha respectively.

ANALISIS VEGETASI TUMBUHAN PANTAI PADA KAWASAN WISATA PASIR JAMBAK, KOTA PADANG Annisa Novianti Samin; Chairul Chairul; Erizal Mukhtar
Biocelebes Vol. 10 No. 2 (2016)
Publisher : Biology Department, Mathematics and natural science, Tadulako University

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Research on the Analysis of Plant Vegetation on Coastal Tourism Regions Pasir Jambak, Padang City had been done starting from May till September 2015. The goal of this research is to find out the composition and the structure of coastal vegetation on Tourism Regions Pasir Jambak, Padang city. This research uses a plot squared method using belt transects and laying a plot carried out systematically sampling. The results shown at tree level found as many as 5 families, 5 species and 36 individuals. The next level of sapling found as many as 4 families, 4 species and 36 individuals, while at the level of seedling was found as many as 12 families, 19 species and 712 individuals. The highest important value at the level of the tree that Casuarina equisetifolia (214.72%) and the lowest was Pongamia sp. (8.22%). Furthermore, on the level of sapling which has the highest importance Cerbera manghas (156.6%) and the lowest was Glochidon sp. (16.2%), while the highest rate of seedling Spaghneticola trilobata (105.5%), the lowest was Ardisia littoralis, Lantana camara and Blumea chinensis with the value (1.8%). Diversity index is low both at tree level (0.33), the level of sapling (0.46) and the level of seedling (0.77).Keyword : Composition, Structure, Diversity, Plant on coastal

SATWA PRIMATA DAN TEGAKAN POHON DI SEPANJANG JALUR KERSIK TUO GUNUNG KERINCI, JAMBI Islami Annisa; Rizaldi; Erizal Mukhtar
Konservasi Hayati Vol 18 No 2 (2022): OKTOBER
Publisher : Universitas Bengkulu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33369/hayati.v18i2.23954

Keberadaan hewan primata arboreal dihabitatnya tergantung kepada profil tegakan pohon, sementara tegakan pohon dipengaruhi oleh gradasi ketinggian habitat dari permukaan laut. Penelitian ini bertujuan untuk mengetahui jenis hewan primata dan profil tegakan pohon berdasarkan ketinggian habitat disepanjang jalur pendakian Gunung Kerinci. Survei lapangan dilaksanakan di sepanjang jalur pendakian Kersik Tuo Gunung Kerinci, Jambi mulai dari ketinggian 1755 sampai 3805 mdpl. Kami menggunakan metode pengamatan langsung dan auditory sensus untuk mengetahui keberadaan satwa primata dan struktur kelompoknya, Sedangkan metode plotless untuk mengevaluasi profil tegakan pohon. Kami menemukan dua jenis primata yaitu Simpai (Presbytis melalophos) sebanyak tujuh kelompok (( X) ̅= 6.15 individu/kelompok) pada ketinggian habitat antara 1806 hingga 2587 m dpl, dan Siamang (Symphalangus syndactylus) dengan empat kelompok (( X) ̅= 3.33 individu/ kelompok) pada ketinggian habitat antara 1898 hingga 2580 m dpl. Profil tegakan pohon yaitu diameter pohon, ketinggian pohon, dan tutupan kanopi tidak berbeda nyata di sepanjang jalur pendakian Kersik Tuo dimana ditemukannya hewan primata tersebut. Hasil penelitian ini menunjukkan bahwa keberadaan dua jenis primata pada rentang ketinggian ini dimungkinkan oleh profil tegakan pohon yang relatif sama memiliki potensi pakan dan kanopi yang saling terhubung. Kata Kunci : Gunung Kerinci, jalur pendakian, ketinggian, primata, tegakan pohon

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