Lower altitudinal variation in habitat associations, tree diversity and co-dominant population structures along moist deciduous forests dominated by sal (<i>Shorea robusta</i>) in Northeast India

Majumdar, K. C.; Datta, Badal Kumar; Shankar, Uma

doi:10.1080/21580103.2014.920732

Cited by 2 publications

(7 citation statements)

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“…The density values of individuals of ≥ 30 cm girth were close to the values from eastern Himalayan terai (Shankar 2001;Kushwaha and Nandy 2012), Gorakhpur (Pandey and Shukla 2003), Tripura (Majumdar et al 2012(Majumdar et al , 2014 and Doboka Reserve Forest (Dutta and Devi 2013b).…”

Section: Patterns Of Abundances (Density Basal Area and Importance Vmentioning

confidence: 69%

“…However, the present value was greater than H′ = 3.10 with 134 tree species from moist sal forests of eastern Himalayan terai (Kushwaha and Nandy 2012). A recent study from 'moist plain sal forests' occurring below 100 m altitude in South district of Tripura (Majumdar et al 2014) has revealed values of H′ greater than those from Darjeeling in three of five sal associations studied: S. robusta-Diperocarpus turbinatus (H′ = 3.93), S. robusta-C. arborea (H′ = 3.73) and S. robusta-S. wallichii (H′ = 3.82). Another association S. robusta-Artocarpus chama is rather close (H′ = 3.42).…”

Section: Patterns Of Species Diversity and Evennessmentioning

confidence: 99%

“…The top five species in descending order of IVI are: S. robusta, S. wallichii, P. kesiya, C. arborea and Callicarpa arborea. dominated forests offer a range from 17 species in 0.5 ha (Dutta and Devi 2013a) to 152 species in 4 ha (Majumdar et al 2014) in eastern and northeastern India (Table 5) and from three species in 0.3 ha (Singh et al 1995) to 177 species in 24 ha in India (Pandey and Shukla 2003). In this study, 'Khasi hill sal' forests revealed 123 species in 5.2 ha sampled area.…”

Section: Figurementioning

confidence: 99%

“…wallichii occurs throughout lowland and lower montane forests with varying dominance (Shankar et al 1998a;Majumdar et al 2014). An obvious difference between 'Khasi hill sal' forests and most other sal forests listed in Table 5 is the representation of Fagaceae with six species commanding 4.3% of IVI.…”

Section: Figurementioning

confidence: 99%

“…Our study sites in Ri-Bhoi district represent a community of sal, which is a continuum of the eastern limit of sal forests in adjacent Nagaon district. On the south of Meghalaya, sal forests occur mainly in central part of Bangladesh (Rahman 2011) and in the State of Tripura of India (Majumdar et al 2012(Majumdar et al , 2014. The sal forests in Garo-Khasi-Jaintia hill range of Meghalaya form a part of the Patkai complex of mountains.…”

Section: Introductionmentioning

confidence: 99%

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Patterns of species dominance, diversity and dispersion in ‘Khasi hill sal’ forest ecosystem in northeast India

Tripathi

Shankar

2014

For. Ecosyst.

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Background: The 'Khasi hill sal' forest ecosystem in Meghalaya, India represents the easternmost limit of sal distribution. We tested if tree diversity and compositional heterogeneity of this ecosystem was higher than other sal-dominated forests due to moister environment. Methods: Vegetation was sampled in 11 transects of 10 m width and up to 500 m length covering 5.2 ha area. All stems ≥ 10 cm girth at breast height were enumerated. Results: We found a pattern of mixed dominance of Shorea robusta (sal) and Schima wallichii and co-dominance of Pinus kesiya and Careya arborea. The Shannon's diversity index (H′) was 3.395 nats. This value is remarkably high and competitive to that of moist sal forests of eastern Himalayan foothills and sal-dominated forests of Tripura. A high value of H′ was manifested by: a) high species richness (S = 123), b) good equitability (70.6%), c) 'fair' resource apportionment, and d) abundance of rare species (84% species with less than one per cent of total individuals, 67% species with two or less individuals ha −1 and 59% species with one or less individuals ha −1 ). The compositional heterogeneity was 'fair' (Whittaker's β w = 3.15). The presence of Fagaceae with six species commanding 4.3% of importance value (IVI) and of a pine (P. kesiya) in sal forest was remarkable. As many as 58 species showed 'low density (≤ 10 individuals ha −1 ), uniform dispersion', five species achieved 'higher density (> 10 individuals ha

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