Ecology And Taxonomy of Mangifera Species (Anacardiaceae) in the 50-HA Plot of Pasoh Forest Reserve, Peninsular Malaysia

The study was conducted at the 50-ha plot of Pasoh Forest Reserve, Negeri Sembilan, Peninsular Malaysia to assess the ecological distribution of Mangifera and to solve some taxonomic problems on doubtful species by clearly circumscribing the limits among taxa by using morphological, anatomical an...

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Main Author: Linatoc, Alona Cuevas
Format: Thesis
Language:English
English
Published: 1999
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Online Access:http://psasir.upm.edu.my/id/eprint/9986/1/FH_1999_10_A.pdf
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spelling my-upm-ir.99862011-02-28T04:57:25Z Ecology And Taxonomy of Mangifera Species (Anacardiaceae) in the 50-HA Plot of Pasoh Forest Reserve, Peninsular Malaysia 1999 Linatoc, Alona Cuevas The study was conducted at the 50-ha plot of Pasoh Forest Reserve, Negeri Sembilan, Peninsular Malaysia to assess the ecological distribution of Mangifera and to solve some taxonomic problems on doubtful species by clearly circumscribing the limits among taxa by using morphological, anatomical and DNA sequences evidences. Thirteen Mangifera taxa were recorded to a total population of 1,202 stems. Mangifera quadrifida is the most abundant with 275 stems, followed by M foetida with 208 stems. The least is M swintonioides with only two trees, both more than 10 cm dbh. Mangifera quadrifida var. longipetiolata has 16 trees all less than 10 cm dbh. The common mango, M indica has only 80 stems. Mangifera griffithii has the most number of trees with dbh exceeding 10 cm, thereby giving the highest estimates in terms of basal area (0. 045 m²ha⁻¹), volume (0. 63 m³ha⁻¹), and above ground biomass (0. 51 tha⁻¹). A total of 163 dead trees were recorded since the initial survey in 1985. High mortality (85%) was found to be trees of less than 10 cm dbh. Mortality of seedlings was primarily caused by burrowing and nest building by wild pigs, while death of big trees was caused by termite attack. Taxonomic review of the genus was carried out exploiting morphological and anatomical characters. However, due to unavailability of reproductive characters throughout the entire course of the study, investigation was carried out making use of vegetative characters alone. Given all the morphological and anatomical evidences, the genus can be divided into two subgenera viz. Limus and Mangifera. This subdivision is further supported by examining the molecular phylogeny of 13 Mangifera taxa using nucleotide sequences of the intergenic spacer region between trnL-trnF of the chloroplast DNA. In the phylogenetic study, two major clades were formed from the monophyletic tree. It is noted that M subsessilifolia, a species incertae was in a clade with M lagenifera and M superba of the subgenus Limus. The second clade on the other hand was composed of species belonging to the subgenus Mangifera except for M foetida, which was classified under subgenus Limus. However, M macrocarpa of subgenus Limus formed a singleton as did M gracilipes of subgenus Mangifera. The divergence of the genus Mangifera is apparent from the heterogeneous feature of the subgenera. Further analysis of other molecular markers from different genes or genomes and consideration of other species of wild mangoes are necessary to infer a stronger phylogenetic analysis of this taxon. Anacardiaceae - Johor - Pasoh Forest Reserve - Case studies 1999 Thesis http://psasir.upm.edu.my/id/eprint/9986/ http://psasir.upm.edu.my/id/eprint/9986/1/FH_1999_10_A.pdf application/pdf en public masters Universiti Putra Malaysia Anacardiaceae - Johor - Pasoh Forest Reserve - Case studies Faculty of Forestry English
institution Universiti Putra Malaysia
collection PSAS Institutional Repository
language English
English
topic Anacardiaceae - Johor - Pasoh Forest Reserve - Case studies


spellingShingle Anacardiaceae - Johor - Pasoh Forest Reserve - Case studies


Linatoc, Alona Cuevas
Ecology And Taxonomy of Mangifera Species (Anacardiaceae) in the 50-HA Plot of Pasoh Forest Reserve, Peninsular Malaysia
description The study was conducted at the 50-ha plot of Pasoh Forest Reserve, Negeri Sembilan, Peninsular Malaysia to assess the ecological distribution of Mangifera and to solve some taxonomic problems on doubtful species by clearly circumscribing the limits among taxa by using morphological, anatomical and DNA sequences evidences. Thirteen Mangifera taxa were recorded to a total population of 1,202 stems. Mangifera quadrifida is the most abundant with 275 stems, followed by M foetida with 208 stems. The least is M swintonioides with only two trees, both more than 10 cm dbh. Mangifera quadrifida var. longipetiolata has 16 trees all less than 10 cm dbh. The common mango, M indica has only 80 stems. Mangifera griffithii has the most number of trees with dbh exceeding 10 cm, thereby giving the highest estimates in terms of basal area (0. 045 m²ha⁻¹), volume (0. 63 m³ha⁻¹), and above ground biomass (0. 51 tha⁻¹). A total of 163 dead trees were recorded since the initial survey in 1985. High mortality (85%) was found to be trees of less than 10 cm dbh. Mortality of seedlings was primarily caused by burrowing and nest building by wild pigs, while death of big trees was caused by termite attack. Taxonomic review of the genus was carried out exploiting morphological and anatomical characters. However, due to unavailability of reproductive characters throughout the entire course of the study, investigation was carried out making use of vegetative characters alone. Given all the morphological and anatomical evidences, the genus can be divided into two subgenera viz. Limus and Mangifera. This subdivision is further supported by examining the molecular phylogeny of 13 Mangifera taxa using nucleotide sequences of the intergenic spacer region between trnL-trnF of the chloroplast DNA. In the phylogenetic study, two major clades were formed from the monophyletic tree. It is noted that M subsessilifolia, a species incertae was in a clade with M lagenifera and M superba of the subgenus Limus. The second clade on the other hand was composed of species belonging to the subgenus Mangifera except for M foetida, which was classified under subgenus Limus. However, M macrocarpa of subgenus Limus formed a singleton as did M gracilipes of subgenus Mangifera. The divergence of the genus Mangifera is apparent from the heterogeneous feature of the subgenera. Further analysis of other molecular markers from different genes or genomes and consideration of other species of wild mangoes are necessary to infer a stronger phylogenetic analysis of this taxon.
format Thesis
qualification_level Master's degree
author Linatoc, Alona Cuevas
author_facet Linatoc, Alona Cuevas
author_sort Linatoc, Alona Cuevas
title Ecology And Taxonomy of Mangifera Species (Anacardiaceae) in the 50-HA Plot of Pasoh Forest Reserve, Peninsular Malaysia
title_short Ecology And Taxonomy of Mangifera Species (Anacardiaceae) in the 50-HA Plot of Pasoh Forest Reserve, Peninsular Malaysia
title_full Ecology And Taxonomy of Mangifera Species (Anacardiaceae) in the 50-HA Plot of Pasoh Forest Reserve, Peninsular Malaysia
title_fullStr Ecology And Taxonomy of Mangifera Species (Anacardiaceae) in the 50-HA Plot of Pasoh Forest Reserve, Peninsular Malaysia
title_full_unstemmed Ecology And Taxonomy of Mangifera Species (Anacardiaceae) in the 50-HA Plot of Pasoh Forest Reserve, Peninsular Malaysia
title_sort ecology and taxonomy of mangifera species (anacardiaceae) in the 50-ha plot of pasoh forest reserve, peninsular malaysia
granting_institution Universiti Putra Malaysia
granting_department Faculty of Forestry
publishDate 1999
url http://psasir.upm.edu.my/id/eprint/9986/1/FH_1999_10_A.pdf
_version_ 1747811039485886464