Community Composition and Tree Population Structure in Undisturbed and Disturbed Tropical Semi-Evergreen Forest Stands of North-East India

Lalfakawma,; Sahoo, Uttam Kumar; Roy, Sri Bhagaban; Vanlalhriatpuia, K.; Vanalalhluna, P. C.

doi:10.15666/aeer/0704_303318

Cited by 40 publications

(17 citation statements)

References 56 publications

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“…Our result also agree with a study done by Lalfakawma et al (2009) whereby undisturbed stand showed higher species diversity as compared to disturbed stands. The low woody species diversity obtained from the production zone could be due to the excessive wood harvesting practice exhibited by the local community; as evidenced we visualized charcoal burning activities carried out in this zone (personal observation).…”

Section: Discussionsupporting

confidence: 93%

Implication of forest zonation on tree species composition, diversity and structure in Mabira Forest, Uganda

Weldemariam¹,

Jakisa²,

Ahebwe³

2017

Environ. Earth Ecol.

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The study aimed to investigate effectiveness of forest management zoning in conserving biodiversity of Mabira forest reserve. The study sites buffer, production, and strict nature reserve management zones were purposively selected. This was undertaken through investigating woody species diversity, composition and structure. A total of 60 sampling plots with a size of 20 m x10 m were used to collect vegetation data. Variables such as woody plant species identification and counts as well as diameter at breast height (DBH) of trees were done. The result depicted a total of 65 woody species; 39 in buffer, 19 in productions and 37 in strict nature reserve. Of these, only 9 trees species were found common to all zones and their Sorensen similarity coefficient was 0.2213. The population structure of the buffer and strict nature reserve zones was found to be a J -shape pattern, whereas the production zone shown an inverted J-shape pattern. Higher woody species diversity was depicted in the buffer and strict nature zones with (H'=2. 73512) and (H'=2. 68412) respectively, and lower in a production zone (H'=1. 63628). The evenness index value of a buffer zone was (J =0. 746574), strict nature (J= 0.743335) and production (J=0. 555719). The production zone had shown higher IVI values followed by buffer and strict nature reserve zone. The most important woody species identified based on their IVI value were Broussonetia papyrifera (Production), Acalypha neptunica (Buffer), Funtumia Elastica (strict nature reserve). The existing forest management is effective in conserving the biodiversity of the forest reserve. Nevertheless, the production zone was still suffering from exploitation of the surrounding community, hence serve for protecting the remaining management zones from further human interference. Further investigation is also required on the adjacent community perceptions of the forest management zoning.

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Section: Discussionsupporting

confidence: 93%

Implication of forest zonation on tree species composition, diversity and structure in Mabira Forest, Uganda

Weldemariam¹,

Jakisa²,

Ahebwe³

2017

Environ. Earth Ecol.

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“…The results therefore show that community composition and structure in the respective plots change with anthropogenic disturbance. This is consistent with the findings of Lalfakawma et al, (2009) that community composition changes with disturbance. The differences in vegetation characteristics between the 3-year fallow and abandoned farmland indicate that the continuous cultivation of land for food crop cultivation results in the alteration of the forest vegetation.…”

Section: Resultssupporting

confidence: 93%

Influence of Vegetation Characteristics on Nutrient Loss in the Rainforest Belt of Agoi- Ekpo, Cross River State, Nigeria

Iwara¹,

Njar²,

Ogundele³

et al. 2018

Journal of Applied Sciences and Environmental Management

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The study evaluated the influence of vegetation characteristics on nutrient loss in vegetation fallows in a part of the rainforest belt in Agoi-Ekpo, Cross River State. Participatory method was used to identify fallows of 3-year and abandoned farmland. In each identified fallow category, 10 plots for vegetation estimation was established, while two runoff plots of 10m x 4m was constructed and used for nutrient loss estimation. Data was gathered during the cropping season of March to November, 2012. Results showed that on the 3-year fallow only basal cover was retained by the model and significantly explained Ca loss (R 2 = 0.627, F = 3.655, p<0.01), Mg loss (R 2 = 0.57.2, F = 3.271, p<0.05) and potassium loss (R 2 =0.527, F = 2.980, p<0.05). On the abandoned farmland, the model retained only crown cover and it significantly explained OC loss (R 2 = 0.591, F = 3.402, p<0.01), TN (R 2 = 0.599, F = 3.456, p<0.01), Ca (R 2 = 0.674, F = 4.067, p<0.01), Mg (R 2 = 0.796, F = 5.75, p<0.01) and K (R 2 = 0.823, F = 6.090, p<0.01). The study showed that more nutrient element losses were recorded in the abandoned farmland. The study suggests that trees and shrubs should not be completely cut down on farmlands facilitate rapid vegetation restoration during land abandonment.

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“…The concentration of dominance (Simpson's index) in the present study is within the reported range 0.21-1.0 for tropical forests by several workers (Kumar et al 2010;Visalakshi 1995;Sahu et al 2012c). The evenness index values fall within the range between 0.64-1.34 in other forests (Lalfakwma et al 2009;Sahu et al 2012a). The Margalef richness index also within the range of 4.54-23.41 for other tropical forests (Mishra et al 2005;Kumar et al 2010).…”

Section: Discussionsupporting

confidence: 88%

Diversity and distribution of tree species in tropical forests of Northcentral Eastern Ghats, India

et al. 2017

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Premavani D, Naidu MT, Kumar OA, Venkaiah M. 2017. Diversity and distribution of tree species in tropical forests ofNorthcentral Eastern Ghats, India. Asian J For 1: 27-32. The diversity and distribution of tree species were studied in three 1 ha sites oftropical forests in the northcentral Eastern Ghats of India. The phytosociological data from forest sites were analyzed quantitatively todetermine the basal area, species diversity, richness and stand density. A total of 1,507 individuals of 104 plant taxa, pertaining to 82genera under 41 families were enumerated at â‰¥15 cm gbh using belt transects (5 m Ã— 1000 m). Tree stand density varied from 371-660individuals per ha while average basal area ranged from 14.54 â€“ 46.51 m2 ha-1. Shannon-Weiner Index (H') ranged from 0.97-0.98,Equitability or evenness index ranged from 0.70-0.79 and Margalef richness index ranged from 10.54 â€“ 10.82. The most dominantfamilies were Rubiaceae, Euphorbiaceae, Fabaceae, Moraceae, and Verbenaceae. Our results suggest further development of forestmanagement and biodiversity conservation in Eastern Ghats region.

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Community Composition and Tree Population Structure in Undisturbed and Disturbed Tropical Semi-Evergreen Forest Stands of North-East India

Cited by 40 publications

References 56 publications

Implication of forest zonation on tree species composition, diversity and structure in Mabira Forest, Uganda

Implication of forest zonation on tree species composition, diversity and structure in Mabira Forest, Uganda

Influence of Vegetation Characteristics on Nutrient Loss in the Rainforest Belt of Agoi- Ekpo, Cross River State, Nigeria

Diversity and distribution of tree species in tropical forests of Northcentral Eastern Ghats, India

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