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Changes in structural attributes of plant communities along disturbance gradients in a dry deciduous forest of Western Ghats, India

Anitha, K.; Joseph, Shijo LU ; Ramasamy, E. V. and Prasad, S. Narendra (2009) In Environmental Monitoring & Assessment 155(1-4). p.393-405
Abstract
Changes in tree and understory plant diversity and community composition in two sites at different disturbance levels were studied on the Anaikatty hills, Western Ghats. Systematic sampling using small scale permanent quadrates (50 x 20 m for trees, 5 x 5 m for shrubs/saplings, 1 x 1 m for herbs/seedlings) enumerated 3,376 individuals of trees (106 species), 8,599 of individuals shrubs (122 species) and 16,659 individuals of herbs (145 species). Among the two sites, species richness and diversity were highest for low disturbed stand (98 and 3.9, respectively) compared to high disturbed site (45 and 2.71, respectively). Result of cluster analysis showed that two distinct clusters were formed on the basis of disturbance of the area in... (More)
Changes in tree and understory plant diversity and community composition in two sites at different disturbance levels were studied on the Anaikatty hills, Western Ghats. Systematic sampling using small scale permanent quadrates (50 x 20 m for trees, 5 x 5 m for shrubs/saplings, 1 x 1 m for herbs/seedlings) enumerated 3,376 individuals of trees (106 species), 8,599 of individuals shrubs (122 species) and 16,659 individuals of herbs (145 species). Among the two sites, species richness and diversity were highest for low disturbed stand (98 and 3.9, respectively) compared to high disturbed site (45 and 2.71, respectively). Result of cluster analysis showed that two distinct clusters were formed on the basis of disturbance of the area in concordance with our field observation. A total of 37 species were common to both sites, sixty one species exclusively found in low disturbed site and eight species were pertained to highly disturbed site. Mann-Whitney test based on Monte Carlo approximation at 95% confidence levels indicated that both populations were not entirely different. The clear difference was only observed for average basal area of trees, density of seedlings, number of species, density and diversity for shrubs and number of species and diversity for herb. The species composition were different in two stand i.e., Nothopegia racemosa-Albizia amara-Maba neilghrrensis in low disturbed stand and Albizia amara-Pleiospermium alatum-Bauhinia racemosa in high disturbed stand. The major disturbance factors identification using spearman rank correlation indicated that the disturbance in low disturbed habitats were mostly from past logging followed by cutting and illicit felling and grazing, while in high disturbed habitats, it was human presence, past logging and lopping and fuel wood collection. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
attributes, Structural, Small scale permanent plots, Cluster analysis, Disturbance, Western Ghats
in
Environmental Monitoring & Assessment
volume
155
issue
1-4
pages
393 - 405
publisher
Springer
external identifiers
  • wos:000267887000029
  • scopus:68149179479
ISSN
1573-2959
DOI
10.1007/s10661-008-0442-z
language
English
LU publication?
yes
id
83bfd139-e66a-43c0-8aba-f3e4e89308b4 (old id 1462729)
date added to LUP
2009-08-19 08:46:22
date last changed
2017-09-10 03:33:18
@article{83bfd139-e66a-43c0-8aba-f3e4e89308b4,
  abstract     = {Changes in tree and understory plant diversity and community composition in two sites at different disturbance levels were studied on the Anaikatty hills, Western Ghats. Systematic sampling using small scale permanent quadrates (50 x 20 m for trees, 5 x 5 m for shrubs/saplings, 1 x 1 m for herbs/seedlings) enumerated 3,376 individuals of trees (106 species), 8,599 of individuals shrubs (122 species) and 16,659 individuals of herbs (145 species). Among the two sites, species richness and diversity were highest for low disturbed stand (98 and 3.9, respectively) compared to high disturbed site (45 and 2.71, respectively). Result of cluster analysis showed that two distinct clusters were formed on the basis of disturbance of the area in concordance with our field observation. A total of 37 species were common to both sites, sixty one species exclusively found in low disturbed site and eight species were pertained to highly disturbed site. Mann-Whitney test based on Monte Carlo approximation at 95% confidence levels indicated that both populations were not entirely different. The clear difference was only observed for average basal area of trees, density of seedlings, number of species, density and diversity for shrubs and number of species and diversity for herb. The species composition were different in two stand i.e., Nothopegia racemosa-Albizia amara-Maba neilghrrensis in low disturbed stand and Albizia amara-Pleiospermium alatum-Bauhinia racemosa in high disturbed stand. The major disturbance factors identification using spearman rank correlation indicated that the disturbance in low disturbed habitats were mostly from past logging followed by cutting and illicit felling and grazing, while in high disturbed habitats, it was human presence, past logging and lopping and fuel wood collection.},
  author       = {Anitha, K. and Joseph, Shijo and Ramasamy, E. V. and Prasad, S. Narendra},
  issn         = {1573-2959},
  keyword      = {attributes,Structural,Small scale permanent plots,Cluster analysis,Disturbance,Western Ghats},
  language     = {eng},
  number       = {1-4},
  pages        = {393--405},
  publisher    = {Springer},
  series       = {Environmental Monitoring & Assessment},
  title        = {Changes in structural attributes of plant communities along disturbance gradients in a dry deciduous forest of Western Ghats, India},
  url          = {http://dx.doi.org/10.1007/s10661-008-0442-z},
  volume       = {155},
  year         = {2009},
}