Survival and Growth of Seedlings of Two Rhododendron Tree Species along an Altitudinal Gradient in a Temperate Broad Leaved Forest of Arunachal Pradesh, India

Bharali, Sanjeeb; Khan, Mahamed Latif; Singha, Lal Bihari

doi:10.5923/j.plant.20120201.06

Cited by 9 publications

(6 citation statements)

References 76 publications

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“…The result depicted Asteraceae family as the most dominant in Pinus wallichiana understory vegetation followed by Rosaceae and Lamiaceae. Rahman et al [24] had also reported same trends of family dominance in their studies whereas, Behera et al [25], Paul (2008), and Bharali et al [26] reported similar trends of family dominance (Asteraceae, Ericacaea and Rosaceae). The species diversity under monotype forest is possibly due to altitude, topographic and physiographic conditions.…”

Section: Discussionmentioning

confidence: 70%

Floristic Composition and Species Diversity of Wintering Herbs in Blue pine Forest of Thimphu District, Bhutan

Tshering¹,

Wangmo

2023

APRJ

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Aims: This study was carried out to document wintering herbs species in the blue pine (Pinus wallichiana) forest of Kawang Gewog under Thimphu district, Bhutan. To generate baseline data on species diversity and composition of the winter herbaceous layer in the blue pine forests of the study area. Study Design: To evaluate the floral diversity and composition of herbs, stratified random sampling was used. Place and Duration of Study: The study was conducted in Thimphu district within the altitudinal range of 2400 m to 2700 m A.S.L. The fieldwork was conducted during the month of December to January 2019 and during March 2020. Methodology: Four line transects were established randomly, with sampling points placed at 25-meter intervals along the transect. For adequate data collection, three 3X3 meter quadrats were laid along a straight line perpendicular to the transect, using species-area Type I curves (strictly nested curves). Each quadrat was then divided into 100 equal sub-quadrats, with a distance of 5 meters separating each quadrat. Results: A total of 60 herb species belonging to 46 genera and 22 families. The Shannon-wiener index of species diversity (H’) showed 1.73 value suggesting higher diversity in the study site with an altitude of 2600 m to 2700 m compared to other sites with an altitude range of 2400 m to 2500 m, H’ value of 1.59. Conclusion: The study conducted reports the finding on diversity and the composition of herbs occurring in the winter season from Kawang Gewog under Thimphu district. The present study also discusses the diversity and evenness of herbs influenced by elevation and anthropogenic influences.

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Section: Discussionmentioning

confidence: 70%

Floristic Composition and Species Diversity of Wintering Herbs in Blue pine Forest of Thimphu District, Bhutan

Tshering¹,

Wangmo

2023

APRJ

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“…From June, with the onset of monsoon and increase in soil moisture content, survival rate of the seedlings was stabilized. Increase in survival rate of seedlings during the wet season is reported by various researchers (Tompsett 1986, Lieberman & Li 1992, Bharali et al 2012. Lower mortality rate recorded in the second year observation than the first year observation may be attributed due the establishment of the seedling towards the preliminary stage of sapling.…”

Section: Phenological Observationsmentioning

confidence: 74%

“…These studies have suggested gap dynamics as an alternative management technique for the degraded and over-logged Dipterocarp forests. Studies on species-specific seedling growth and survival in northeast India is sparse with only a few documentations (Bharali et al 2012, Saikia & Khan 2012a, Saikia & Khan 2012b). …”

Section: Wwwtropicalplantresearchcommentioning

confidence: 99%

Untitled

2014

Trop. Plant Res.

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An attempt has been made to unravel the major phenophases, seedling survival and growth of Vatica lanceaefolia, a critically endangered tree species in two different micro sites of Hollongapar Gibbon Wildlife Sanctuary, Assam. The study was carried out for a period of 24 months to investigate various phenophases with respect to seasonal variations of the year and, to understand the growth and survival of the seedlings in two micro sites (gap and understory) in relation with the prevailing meteorological parameters of the study area. Leaf flushing was observed twice in a year in the month of December and May, while flowering and fruiting occurs during pre-monsoon season (April and May). The seedlings showed better survival in gap (66.6%) compared to the understory (46.6%) and relative growth rates of the seedlings in terms of height and collar diameter varied significantly across the months and also between the micro environmental conditions of the two micro sites (P<0.05). Wet monsoon season favoured the survival and growth of seedlings. Relative humidity (P<0.05), average temperature (P<0.05) and rainfall (P<0.05) of the study area exhibited positive correlation with the growth of V. lanceaefolia seedlings in both the micro sites. This is the pioneer study on this species which will be helpful for developing proper conservation strategies and will serve as a baseline for further research on this species to improve the status, distribution and multiplication of the species.

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“…According to Khumbongmayum et al (2005), the gradual acceleration in seedling growth rates during the rainy season may be caused by both the increased moisture content of the soil and the quick decomposition of litter. ANOVA results showed a non-significant effect of season on seedling growth (Table 4), however, Bharali et al (2012) reported positive effect of different seasons of the year on seedling growth in two Rhododendron species of Arunanchal Pradesh. determined by the ability of species to adapt their morphology and physiology to their environment (Rose, 2000).…”

Section: Seedling Survival and Mortalitymentioning

confidence: 95%

Seedling Recruitment of Rhododendron arboreum: an important NTFP species of North-Western Himalaya, India

Iqbal¹,

Negi²,

Pala

et al. 2023

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We examined the recruitment, survival, mortality, growth, and development of Rhododendron arboreum Smith, one of the important Non- Timber forest Product species (NTFPs). Ten permanent plots (10 x 10 m2) were created in four sites of mixed broad-leaved temperate forests of Garhwal Himalaya. We measured seedling shoot length and collar diameter at the beginning of the experiment and re-measured at three-month intervals with maximum seedling recruitment recorded in Triguginaryan (36.36 %, during Nov and Aug), and most seedlings were found established either on the boundary or in either partially or fully gaps. While a higher rate of mortality occurred in the winter season. Maximum height increment for seedlings was recorded in Adhwani (1.005 cm-1). R. arboreum recorded the highest recruitment during post-rainy, with an overall increment of 0.60 cm-1. Seasonal variations were seen in the overall relative growth rate for height (RGRH) for Rhododendron seedlings. Seasonal variation in temperature and light is a crucial factor in determining growth. Because of the favorable temperature and soil moisture during the rainy season, vigorous shoot growth continued for the longest period of time at all four sites. The current study's findings also show that seedlings develop and survive better in gaps than in the understory. The current study also demonstrates that ideal soil moisture and temperature conditions are essential for seedling growth and development.

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Survival and Growth of Seedlings of Two Rhododendron Tree Species along an Altitudinal Gradient in a Temperate Broad Leaved Forest of Arunachal Pradesh, India

Cited by 9 publications

References 76 publications

Floristic Composition and Species Diversity of Wintering Herbs in Blue pine Forest of Thimphu District, Bhutan

Floristic Composition and Species Diversity of Wintering Herbs in Blue pine Forest of Thimphu District, Bhutan

Untitled

Seedling Recruitment of Rhododendron arboreum: an important NTFP species of North-Western Himalaya, India

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