Ecosystem reconstruction through `taungya' plantations following commercial logging of a dry, mixed deciduous forest in Darjeeling Himalaya

Shankar, Uma; Lama, Sony; Bawa, Kamaljit S.

doi:10.1016/s0378-1127(97)00152-7

Cited by 34 publications

(26 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…At most, the deciduous phase lasts one to two weeks for individual trees of S. robusta. Corroborating other studies (Shankar et al 1998a;Shankar 2001;Pandey and Shukla 2003;Kushwaha and Nandy 2012), Euphorbiaceae (including Phyllanthaceae) and Leguminosae were the most speciose families with 14 and 11 species, respectively. These were followed by Moraceae (10 species), Lauraceae (9), Rubiaceae (8), Fagaceae (6) and Malvaceae (6).…”

Section: Figuresupporting

confidence: 77%

“…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%

“…After the dawn of forestry management in Bengal in 1865 by the colonial government (Shankar et al 1998a), sal forests were the principal source of timber for railway sleepers, house building and furniture. Areas blanked by extraction of sal trees were planted with teak (Tectona grandis), especially in eastern and northeastern India (Tewari et al 2014).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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

Tripathi

Shankar

2014

For. Ecosyst.

Self Cite

View full text Add to dashboard Cite

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

show abstract

Section: Figuresupporting

confidence: 77%

Section: Figurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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

Tripathi

Shankar

2014

For. Ecosyst.

Self Cite

View full text Add to dashboard Cite

show abstract

“…While natural regeneration and recruitment of species in disturbed environments are primarily substrate/soil-driven processes and governed by resident sources and dispersal characteristics (Shankar et al, 1998), degraded forests under regular protection may help to regenerate vegetation, provide biomass energy, improve soil properties and maintain ecological stability by creating a tropospheric CO 2 sink (Houghton, 1990;Islam et al, 1999). However, phytoecological studies, which investigate natural regeneration of vegetation in the degraded tropical forest ecosystems of Bangladesh, are inadequate, and this issue merits greater attention.…”

mentioning

confidence: 99%

Deforestation effects on vegetative regeneration and soil quality in tropical semi‐evergreen degraded and protected forests of Bangladesh

et al. 2001

View full text Add to dashboard Cite

Tropical forests of the world are degrading at an alarming rate because of human-induced activities. This study was conducted to determine the consequences of deforestation on the natural regeneration of vegetation and soil quality in tropical, semievergreen protected and degraded forest ecosystems of Bangladesh. In each forest ecosystem, 20 matured trees were randomly selected for laid-out experimental plots by placing the tree stand at the center of the plot. The number of vegetative species, height, basal area, crown percentages and species richness were measured. The selected soil properties were determined. The vegetation in the protected forest site was denser with an abundance of species than in the degraded forest site. The primary forest regenerative species were dominated by the dipterocarps in both forest sites. The most alarming difference was that of an abrupt decline in regenerative forest species accompanied by an increase in exotic shrubs, grasses and vines typical of open habitats in the degraded forest site. These shrubs (e.g. Melastaoma, Lantana camara, Clerodendrum infortunatum and Jasminium spp.) and grasses and vines (e.g. Imperata cylindrica, Imperata arundinacea, Mikania scandenes, Saccharum spontaneum and Eupatorium odoratum) are gradually replacing the primary forest regenerative species in the degraded forest site. The soil quality of the degraded forest site has deteriorated over time due to preferential removal of ®ner particles and organic matter by accelerated water erosion. As a result, natural regeneration of primary forest species, especially dipterocarps, is severely affected by the direct effects of biotic interferences and attendant processes of soil quality degradation from deforestation. In contrast, degraded forest sites under regular protection have shown slow, but gradual, increase in crown frequency, enhanced recruitment and recovery of primary forest species, species abundance, and an improvement in soil quality.

show abstract

“…: Dipterocarpaceae) dominated (Shankar et al, 1998). Recent forest fragmentation due to slash and burning for agriculture (primarily for tea) and other developmental activities allows certain generalist species to dominate the forests (Shankar et al, 1998).…”

Section: Climate Change and Habitat Loss May Be The Fundamental Reasomentioning

confidence: 99%

Looper Caterpillar Invasion in North East Indian Tea Agro-Ecosystem: Change of Weather and Habitat Loss May be Possible Causes?

Antony¹

2012

jtsr

View full text Add to dashboard Cite

Tea industry in India hit a record loss of tea production in 2009-11 due to widespread attack of tea defoliators,looper caterpillar pests of geometrid moths (Lepidoptera) in major tea growing eco-belt of Assam and West Bengal states. This geometrid pest complex has at least four sister species, two each of Biston and Hyposidra; and a mixed brood of Ectropis sp. The former one was reported as a pest of tea in India since 1911, and later one reported from China and introduced to India; but Hyposidra is a novel tea pest globally, reported recently and that too first from northeast India. Through this article, we attempt to portray the severity of looper outbreak and raised two key questions; viz., present looper outbreak as an indication of climate change in north-east India? and habitat loss may be the fundamental reason for the primary invasion of looper?

show abstract

Ecosystem reconstruction through `taungya' plantations following commercial logging of a dry, mixed deciduous forest in Darjeeling Himalaya

Cited by 34 publications

References 19 publications

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

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

Deforestation effects on vegetative regeneration and soil quality in tropical semi‐evergreen degraded and protected forests of Bangladesh

Looper Caterpillar Invasion in North East Indian Tea Agro-Ecosystem: Change of Weather and Habitat Loss May be Possible Causes?

Contact Info

Product

Resources

About