scholarly journals Importance Of Small Diameter Woody Plants And Treelet Species In Tropical Wet Evergreen Forest Of Southern Western Ghats, India

2022 ◽  
Author(s):  
K. A Sreejith ◽  
M. S Sanil ◽  
T. S Prasad ◽  
M. P Prejith ◽  
V. B Sreekumar ◽  
...  
Keyword(s):  
Tropical Forests ◽  
Plant Species ◽  
Western Ghats ◽  
Small Diameter ◽  
Basal Area ◽  
Evergreen Forest ◽  
Above Ground Biomass ◽  
Forest Inventories ◽  
Southern Western Ghats ◽  
Diameter Classes

Tropical forests have long been accepted for their productivity and ecosystem services on account of their high diversity and stand structural attributes. In spite of their significance, tropical forests, and especially those of Asia, remain understudied. Until recently, most forest inventories in Asia have concentrated on trees 10 cm in diameter. Floristic composition, plant species diversity, above-ground biomass, basal area, and diversity were investigated across different life forms and two-diameter classes in a large-scale 10-ha plot, in the undisturbed tropical seasonal rain forest of Southern Western Ghats, Kerala, India. The regeneration pattern of the study area was examined by evaluating fisher's alpha and IVI (Important Value Index) across three layers of vegetation (seedling, sapling, and tree). Within the plot, we recorded 25,390 woody plant species ≥1 cm dbh from 45 families, 91 genera, and 106 species. Plant density was 2539 woody individuals per hectare, with a basal area of 47.72 m2/ha and above-ground biomass of 421.77 Mg/ha. By basal area, density, and frequency, the Rubiaceae, Sapotaceae, and Malvaceae families were the most important. Small-diameter trees (1 cm ≤ dbh ≤10 cm) were found to be 78 percent of the total tree population, 20.2 percent of the basal area, and 1.4 percent of the aboveground biomass. They also possessed 6 percent more diversity at the family level, 10% more diversity at the genus level, and 12% more diversity at the species level than woody individuals under 10 cm dbh. Woody individuals of treelets life form and small-diameter classes were much more diverse and dense than the other groups, indicating that results based only on larger canopy trees and larger diameter class maybe not be an appropriate representation of the diversity status of a particular tropical forest type. The lower density of individuals in the initial girth class indicates the vulnerability of the forest system to anthropogenic, natural disturbance and a changing climate. Reduce the minimum diameter limit down to 1 cm, in contrast to 10 cm limit used in most of the evergreen forest inventories, revealed a high density and diversity in the lower stories.

Rediscovery of Ophiorrhiza incarnata C.E.C. Fisch. (Rubiaceae) from the Western Ghats of India after a lapse of 83 years

2021 ◽  
Vol 13 (7) ◽  
pp. 18953-18955
Author(s):  
Perumal Murugan ◽  
Vellingiri Ravichandran ◽  
Chidambaram Murugan
Keyword(s):  
Plant Species ◽  
Western Ghats ◽  
Conservation Status ◽  
Type Locality ◽  
Adjacent Area ◽  
Threatened Plant ◽  
Threatened Plant Species ◽  
Western Ghats Of India ◽  
Southern Western Ghats ◽  
The Western Ghats

Ophiorrhiza incarnata C.E.C.Fisch. (Rubiaceae), a threatened plant species of southern Western Ghats is rediscovered from the adjacent area of the type locality after lapse of eight decades.  Its distribution and conservation status are discussed.

Christisonia tomentosa(Orobanchaceae): a new plant species from southern Western Ghats, India

Webbia ◽  
2015 ◽  
Vol 70 (2) ◽  
pp. 227-230
Author(s):  
Jose Mathew ◽  
Kadakasseril Varghese George
Keyword(s):  
Plant Species ◽  
Western Ghats ◽  
Southern Western Ghats

scholarly journals Allometric equations to estimate above-ground biomass of small-diameter mixed tree species in secondary tropical forests

2020 ◽  
Vol 13 (1) ◽  
pp. 165-174
Author(s):  
R Puc-Kauil ◽  
G Ángeles-Pérez ◽  
JR Valdéz-Lazalde ◽  
VJ Reyes-Hernández ◽  
JM Dupuy-Rada ◽  
...  
Keyword(s):  
Tropical Forests ◽  
Tree Species ◽  
Small Diameter ◽  
Allometric Equations ◽  
Above Ground Biomass ◽  
Ground Biomass

scholarly journals Diversité floristique et caractérisation structurale de la réserve forestière de Ouoghi en zone soudanoguinéenne (Centre-Bénin)

2017 ◽  
Vol 13 (12) ◽  
pp. 400
Author(s):  
Sfich T. B. Ahouandjinou ◽  
Hounnankpon Yédomonhan ◽  
Monique G. Tossou ◽  
Aristide C. Adomou ◽  
Akpovi Akoègninou
Keyword(s):  
Plant Species ◽  
Structural Parameters ◽  
Local Population ◽  
Basal Area ◽  
Community Analysis ◽  
Forest Inventories ◽  
Plant Groups ◽  
Hyptis Suaveolens ◽  
Analysis Package ◽  
Daniellia Oliveri

Objective: The objective of this study is to identify the plant species and to characterize the vegetation of the Ouoghi forest reserve in the commune of Savè (Center-Benin). Method and results: Floristic and forest inventories were carried out through 144 relevés in according to the Braun-Blanquet method. A total of 246 plant species were identified. They belong to 178 genera and 63 families. Multivariate analyzes with the Community Analysis Package (CAP) software made it possible to individualize 3 vegetation formations comprising 8 plant groups. This is the shrub savannah with Prosopis africana and Pennisetum polystachion, the tree savannah with Hymenocardia acida and Pennisetum polystachion, the tree savannah to Vitellaria paradoxa and Pennisetum polystachion, the tree savannah to Pterocarpus erinaceus and Hyptis suaveolens, the woodland savannah with Daniellia Oliveri and Chromolaena odorata, the woodland savannah at Isoberlinia doka and Pennisetum polystachion, the woodland savannah at Daniellia oliveri and Andropogon tectorum and the tree flood savannah to Daniellia oliveri and Leersia hexandra. The floristic and structural parameters change from one group to another. Thus, the specific richness varies from 49 to 153 species and the diversity of families is between 22 and 49 with a predominance of Leguminosae. The density varies from 95 to 275 stems / ha, basal area from 2.35 to 8.44 m² / ha. Conclusion and application of results: The study evaluated the floristic diversity of the Ouoghi reserve. In addition, it indicated the need for its integral protection for its dynamics towards dry dense forest vegetation. Sustainable management of this site needs implication of local population.

scholarly journals Distribution and composition of butterfly species along the latitudinal and habitat gradients of the Western Ghats of India

Check List ◽  
2012 ◽  
Vol 8 (6) ◽  
pp. 1197 ◽  
Author(s):  
Anand Padhye ◽  
Sheetal Shelke ◽  
Neelesh Dahanukar
Keyword(s):  
Western Ghats ◽  
Literature Survey ◽  
Evergreen Forest ◽  
Butterfly Species ◽  
Number Of Species ◽  
Habitat Gradients ◽  
Western Ghats Of India ◽  
Southern Western Ghats ◽  
The Western Ghats ◽  
Forest Habitats

Distribution of butterfly species along the latitudinal and habitat gradients of the Western Ghats was studied. The Western Ghats was divided into 14 latitude zones and the species diversity in each latitude zone, along with habitats of their occurrence, were studied using the data from literature survey for the entire Western Ghats as well as data from personal observations in the areas between 14°N to 20°N latitudes. Out of 334 species recorded from the Western Ghats, 58 species were found in all latitudinal zones, while 5 species were reported in only one latitudinal zone. Further, southern Western Ghats consisted of more number of species and more number of genera as compared to northern Western Ghats. Latitudinal zones between 10°N to 12°N had most of the Western Ghats endemic species. Habitat wise distribution of species revealed three significant clusters grossly separated by the level of human disturbance. Evergreen forest habitats supported maximum number of species endemic to the Western Ghats.

scholarly journals Diversity and Threatened Climber Plants in Tropical Forests of Courtallam Hills, Southern Western Ghats, India

2020 ◽  
Vol 9 (2) ◽  
Author(s):  
E. Pandian ◽  
P. Ravichandran
Keyword(s):  
Tropical Forests ◽  
Western Ghats ◽  
Tamil Nadu ◽  
Local Community ◽  
Conservation Status ◽  
In Situ Conservation ◽  
Forest Protection ◽  
Climbing Plant ◽  
Southern Western Ghats ◽  
Salacia Oblonga

Investigated the distribution of climber and its conservation status in tropical forests of Courtallam hills in southern Western Ghats of Tamil Nadu, India during 2017-2018. A total of five 1 ha plots were established, and all climber species ≥1 cm diameter at breast height (dbh) were counted, which resulted in a total of 81 climbing plant species that representing to 62 genera under 30 families. Study plots revealed the most abundant climber species are Jasminum flexile (Oleaceae), Salacia oblonga (Celastraceae) and Ziziphus oenopolia (Rhamnaceae). The dominant climber species families in the study plots include Apocynaceae (11 species), Leguminosae (10 species), Menispermaceae and Vitaceae (6 species each), Capparaceae and Oleaceae (5 species each) and Convolvulaceae (4 species). Among 81 climber species, about 12 species are documented as threatened species of Courtallam hills. The results of this investigation suggest that forest management and forest protection is important for in-situ conservation of liana diversity with the involvement of local community.

Structure and floristic composition of a tropical evergreen forest in south-west India

1996 ◽  
Vol 12 (2) ◽  
pp. 191-214 ◽  
Author(s):  
Jean-Pierre Pascal ◽  
Raphael Pelissier
Keyword(s):  
Western Ghats ◽  
Basal Area ◽  
Floristic Composition ◽  
Evergreen Forest ◽  
Systematic Sampling ◽  
Importance Value Index ◽  
Importance Value ◽  
Tropical Evergreen Forest ◽  
Western Ghats Of India ◽  
The Western Ghats

ABSTRACTA permanent plot of 28 ha was established in a dense wet evergreen forest in the Western Ghats of India to study the functioning of the ecosystem. Since April 1990, 1981 trees of ≥30 cm gbh have been enumerated in a systematic sampling of five strips totalling 3.12 ha. This paper describes the main structural and floristic characteristics of the plot.The density (635 trees ≥30 cm gbh per hectare) and basal area (39.7 m2 ha−1) are high. Despite the high diversity (Simpson's D = 0.92 and Shannon's H' = 4.56), four species are distinctly, dominant in terms of an importance value index (relative density + relative basal area). Each of these four species occupies a different layer in the ecosystem: Humboldtia brunonis Wall. (Fabaceae) dominates the undergrowth, Myristica dactyloïdes Gaertn. (Myristicaceae) the intermediate strata, Valeria indica L. (Dipterocarpaceae) the higher canopy level and Dipterocarpus indicus Bedd. (Dipterocarpaceae) the emergents. This pronounced species hierarchy is one of the most important characteristics of the evergreen forests of the Western Ghats. The two dipterocarps account for 20.1% of the total number of trees and contribute 40.9% to the total basal area. This formation can, therefore, be considered as the westernmost lowland dipterocarp forest of Asia.Analysis of the spatial variations in the floristic composition and in the structure of the main species populations shows that two kinds of mature phases can be identified: where the topography is raised and gently sloping, the vertical structure of the stand is discontinuous, with Dipterocarpus indicus and Vateria indica forming an emergent layer above a dense undergrowth; on slopes, the stand is lower, vertically continuous and saturated with Valeria indica and Myristica dactyloïdes. The link between the structure of the stand and dynamic processes is discussed.

scholarly journals Diversity, Population Structure, and Above Ground Biomass in Woody Species on Ngomakurira Mountain, Domboshawa, Zimbabwe

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Clemence Zimudzi ◽  
Christopher Chapano
Keyword(s):  
Small Diameter ◽  
Basal Area ◽  
Woody Species ◽  
Distribution Patterns ◽  
Wiener Index ◽  
Mean Value ◽  
Stem Density ◽  
Above Ground Biomass ◽  
Systematic Random Sampling ◽  
Ground Biomass

The diversity, structure, species composition, and above ground biomass of woody plants on Ngomakurira mountain in Zimbabwe were studied. A systematic random sampling approach was adopted to establish 52 sampling plots measuring 10 × 10 m across 3 study strata in the 1266 ha study area. Woody species occurring in each plot were identified and the circumferences of trees with diameters >8.0 cm at 1.3 m height were measured. A total of 91 species belonging to 74 genera and 39 families were identified in the sample plots. A Shannon-Wiener index mean value of 3.12 was obtained indicating high species diversity on the mountain. The DBH size class distribution showed inverse J distribution patterns across the three study strata, but with only 3 individual plants with DBH > 30 cm. Mean basal area was 15.21 m2 ha−1 with U. kirkiana and J. globiflora contributing approximately 30% of the basal area. The estimated above ground biomass ranged from 34.5 to 65.1 t ha−1. Kruskal-Wallis-H test showed no significant differences in species richness, stem density, basal area, above ground biomass, and evenness, across the study strata (p<0.05). Ngomakurira woodland has potential to regenerate due to the presence of many stems in the small diameter size classes.

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