Species diversity, regeneration and dominance as influenced by canopy gaps and their characteristics in tropical evergreen forests of Western Ghats, India

Devagiri, G. M.; Khaple, Anil Kumar; Mohan, Siddagangaiah; Venkateshamurthy, Puttanaik; Tomar, Sanjay; Arunkumar, A. N.; Joshi, Geeta

doi:10.1007/s11676-016-0223-4

Cited by 13 publications

(8 citation statements)

References 41 publications

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“…Likewise, a study demonstrates same results that small gap sizes were many compared with the other gap sizes in temperate forest of Qinling Mountains, China [23]. On the other hand, categorization of small gap sizes was also similar to the current study [22]. This study was also congruent with previous findings that small gap sizes are the most common in natural forests triggered by tree death/removal [12].…”

Section: Forest Gap Size Grouping Based On Area In Sw Mau Forest Reservesupporting

confidence: 91%

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Influence of Gap Size on Regeneration, Structure and Species Diversity of Woody Vegetation in a Secondary Montane Forest Reserve, Kenya

Ocholla

Obwoyere²,

Inoti³

2022

AJEE

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South-Western (SW) Mau forest reserve has been experiencing anthropogenic and natural disturbances creating canopy openings in the forest. The objective of this study was to determine how these canopy openings influence regeneration, forest structure and species diversity. The study employed nested sampling design in disturbed sites of the forest reserve. Plots of 500 by 500 m were laid once at 100 m inwards from the forest edge in the three blocks of SW Mau; Ndoinet, Maramara and Itare. Gaps were randomly identified in the plots and gap area calculated using Ellipse Method (EM). Gap sizes were categorized based on area (m2). Woody species surrounding the gaps were identified and names inventoried. To determine regeneration, two quadrats of 5 by 5 m and 1 by 1 m were randomly delineated in every gap size four times and eight times for saplings (1-3 m high) and seedlings (<1 m high), respectively. Tree heights surrounding the gaps were measured using suunto clinometer. Diameter at breast height (dbh) was measured using diameter caliper (65 cm for small trees) and diameter tape for large trees (dbh> 65 cm). A total of 41 gaps were identified with small gap sizes dominating (23). Kruskal-Wallis rank sum test indicated non-significant differences in regeneration, forest structure and species diversity in the three gap sizes. This was attributed to Piper capensis which invaded medium and large gap sizes creating a closed canopy. It was, therefore, concluded that canopy cover from the invasive species influenced woody vegetation parameters in the gap sizes. It is, therefore, recommended to clear the dense ground cover to allow better natural regeneration and also enrichment planting in the gaps.

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Section: Forest Gap Size Grouping Based On Area In Sw Mau Forest Reservesupporting

confidence: 91%

“…The findings were congruent to those reported by Hammond et al [12] sizes. Constant anthropogenic disturbances in SW Mau could be the cause of higher number of small gap sizes, thus, similar to other earlier studies [3,8,22].…”

Section: Forest Gap Size Grouping Based On Area In Sw Mau Forest Reservesupporting

confidence: 90%

Influence of Gap Size on Regeneration, Structure and Species Diversity of Woody Vegetation in a Secondary Montane Forest Reserve, Kenya

Ocholla

Obwoyere²,

Inoti³

2022

AJEE

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“…However, the density was within the range of 257 -664 stems ha -1 and the basal area within the range 29-42 m 2 ha -1 for agroforests, but it was on the lower side of the values recorded in natural forests as reported by Devagiri et al, (2016) and Swamy et al, (2010) for tropical evergreen forests of Western Ghats region in Karnataka. The density of trees in coffee plantations is an important factor since the shade provided by the trees affects the yield of coffee.…”

Section: Resultsmentioning

confidence: 52%

“…the Western Ghats in South India is one among them (Myers et al, 2000). Forests of Western Ghats contain the most diverse plant communities, with up to 350-400 tree and liana species coexisting in a single hectare (Devagiri et al, 2016 andMurthy et al, 2016). In addition to the rich biodiversity, these forests are also acting as natural sinks of carbon, with a sequestration potential of 80-150 Mg C ha -1 (Devagiri et al, 2013) and thus playing a fundamental role in the global carbon cycle.…”

Section: Issn: 2319-7706 Volume 8 Number 04 (2019)mentioning

confidence: 99%

Sustainability of Coffee based Agroforestry Systems and Opportunities for Conservation in the Central Western Ghats, India

ram¹,

Nayak²,

Chavan³

2019

Int.J.Curr.Microbiol.App.Sci

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“…Studies showed that the size and number of forest gap were negatively correlated with diversity index, and positively correlated with species regeneration (i.e. the density of seedlings and saplings) (Devagiri et al, 2016;Montoro Girona et al, 2018). After thinning, some forest may also experience windthrow which have a major impact on diversity creating new habitats and gaps (Peterson and Leach, 2008;Dodet et al, 2011).…”

Section: The Reasons For the Changed Community Structure And Diversitymentioning

confidence: 99%

A Decade of Close-to-Nature Transformation Alters Species Composition and Increases Plant Community Diversity in Two Coniferous Plantations

Ming

Liu

et al. 2020

Front. Plant Sci.

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Close-to-nature transformation silviculture is a promising approach to meet the criteria for sustainable forestry. To explore the effects of close-to-nature transformation on community structure and plant diversity in Pinus massoniana and Cunninghamia lanceolatas pure plantations, four stands were selected, including close-to-nature transformed stand of P. massoniana (PCN) and its unimproved pure stand (PCK), and close-to-nature transformed stand of C. lanceolata (CCN) and its unimproved pure stand (CCK). Plant diversity and community structure in the four stands were investigated before and after a decade of close-to-nature transformation. After the close-to-nature transformation, the plant diversity and community structure were significantly altered. Compared with control stands, the transformation increased the species richness and diversity of the tree layer and the whole community, while did not significantly affected the shrub and herb diversity. The species richness in the tree layer in the P. massoniana and C. lanceolata plantations was 2.1 and 2.8 times that of their corresponding control. Species composition and important value of each species were altered in the tree, shrub and herb layers. The close-to-natural transformation lowered the community dominance and the important value of P. massoniana and C. lanceolate. The advantage position of single species in the community was weakened by the forest transformation. The plant community became diversified and uniformly distributed. The enhanced community species diversity was derived from the increase in the tree diversity. These results indicated that close-to-nature transformation increased the forest plant diversity and optimized the community structure. The close-to-nature transformation plays a positive role in coniferous plantation ecosystem structure.

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Species diversity, regeneration and dominance as influenced by canopy gaps and their characteristics in tropical evergreen forests of Western Ghats, India

Cited by 13 publications

References 41 publications

Influence of Gap Size on Regeneration, Structure and Species Diversity of Woody Vegetation in a Secondary Montane Forest Reserve, Kenya

Influence of Gap Size on Regeneration, Structure and Species Diversity of Woody Vegetation in a Secondary Montane Forest Reserve, Kenya

Sustainability of Coffee based Agroforestry Systems and Opportunities for Conservation in the Central Western Ghats, India

A Decade of Close-to-Nature Transformation Alters Species Composition and Increases Plant Community Diversity in Two Coniferous Plantations

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