Abstract
Elevational gradients are linked with different abiotic and biotic factors, which in turn influence the distribution of plant diversity. In the present study we explored the relative importance of different environmental factors in shaping species diversity and composition of vascular plant species along an elevational gradient in the Chamelia Valley, Api-Nampa Conservation Area in western Nepal. Data were collected from 2,000 to 3,800 m above sea level and analysed using a generalized linear mixed model (GLM) and non-metric multidimensional scaling (NMDS). We recorded 231 vascular plant species consisting of 158 herb species belonging to 55 families, 37 shrub species belonging to 22 families and 36 tree species belonging to 23 families. Species richness and species abundance significantly decreased with increasing elevation. However, species richness increased with the intensity of vegetation cutting. Species richness and abundance also increased with increased annual precipitation and mean annual temperature whereas species abundance decreased with grazing, soil phosphorus and nitrogen. NMDS ordination revealed that mean annual temperature and annual precipitation affect the composition of vascular plant species in opposite ways to elevation. Among the many anthropogenic disturbances, only grazing affected species composition. In conclusion, more than one environmental factor contribute to the shaping of patterns of vascular plant species distribution in western Nepal. Knowledge on species diversity, distribution and underlying factors needs to be taken into consideration when formulating and implementing conservation strategies.
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References
Abella SR, Springer JD (2015) Effects of tree cutting and fire on understory vegetation in mixed conifer forests. Forest Ecol Managem 335:281–299
Aber JD, Melillo JM (2001) Terrestrial ecosystems, 2nd edition. Brooks Cole, San Diego
Adhikari YP, Fischer A, Fischer HS, et al (2017) Diversity, composition and host-species relationships of epiphytic orchids and ferns in two forests in Nepal. J Mountain Sci 14:1065–1075
Amjad MS, Arshad M, Rashid A, et al (2014) Examining relationship between environmental gradients and Lesser Himalyan forest vegetation of Nikyal valley, Azad Jammu and Kashmir using ordination analysis. Asian Pacific J Trop Med 7:S610–S616
Baniya CB, Solhøy T, Gauslaa Y, Palmer MW (2012) Richness and composition of vascular plants and cryptogams along a high elevational gradient on Buddha Mountain, Central Tibet. Folia Geobot 47:135–151
Bartels SF, Chen HYH (2010) Is understory plant species diversity driven by resource quantity or resource heterogeneity? Ecology 91:1931–1938
Bhatta KP, Rokaya MB, Münzbergová Z (2015) Environmental feedbacks of the subalpine ecotone species in the Langtang National Park, central Nepal Himalaya. Pakistan J Bot 47:2115–2125
Bhattarai KR, Vetaas OR (2006) Can Rapoport’s rule explain tree species richness along the Himalayan elevation gradient, Nepal? Diversity & Distrib 12:373–378
Bhattarai KR, Vetaas OR (2003) Variation in plant species richness of different life forms along a subtropical elevation gradient in the Himalayas, east Nepal. Global Ecol Biogeogr 12:327–340
Bhattarai KR, Vetaas OR, Grytnes JA (2004) Fern species richness along a central Himalayan elevational gradient, Nepal. J Biogeogr 31:389–400
Bhattarai P, Bhatta KP, Chhetri R, Chaudhary RP (2014) Vascular plant species richness along gradient of the Karnlai river, Nepal Himalaya. Int J Pl Anim Environm Sci 4:114–126
Bongers F, Poorter L, Hawthorne WD, Sheil D (2009) The intermediate disturbance hypothesis applies to tropical forests, but disturbance contributes little to tree diversity. Ecol Letters 12:798–805
Carter MR, Gregorich EG (eds) (2008) Soil sampling and methods of analysis, 2nd ed. CRC Press, Boca Raton, Florida, USA
Christensen M, Heilmann-Clausen J (2009) Forest biodiversity gradients and the human impact in Annapurna Conservation Area, Nepal. Biodivers & Conservation 18:2205–2221
de Bello F, Lepš J, Sebastià M-T (2007) Grazing effects on the species-area relationship: variation along a climatic gradient in NE Spain. J Veg Sci 18:25–34
Denslow JS (1987) Tropical rainforest gaps and tree species diversity. Annual Rev Ecol Syst 18:431–451
Díaz S, Cabido M, Casanoves F (1999) Functional implications of trait-environment linkages in plant communities. In Weiher E, Keddy P (eds) Ecological assembly rules: perspectives, advances, retreats. Cambridge University Press, The Edingurgh Building, Cambridge, UK, pp 338–362
DoHM (2017) Observed climate trend analysis of Nepal (1971–2014). Department of Hydrology and Meteorology. Ministry of Science, Technology & Environment, Kathmandu, Nepal
Drollinger S, Müller M, Kobl T, et al (2017) Decreasing nutrient concentrations in soils and trees with increasing elevation across a treeline ecotone in Rolwaling Himal, Nepal. J Mountain Sci 14:843–858
Forman L, Bridson DM (1989) The herbarium handbook. Royal Botanic Gardens
Fox JW (1979) Intermediate-disturbance hypothesis. Science 204:1344–1345
Gairola S, Sharma CM, Ghildiyal SK, Suyal S (2012) Chemical properties of soils in relation to forest composition in moist temperate valley slopes of Garhwal Himalaya, India. Environmentalist 32:512–523
Gilliam FS, Dick DA (2010) Spatial heterogeneity of soil nutrients and plant species in herb-dominated communities of contrasting land use. Pl Ecol 209:83–94
Grytnes JA, Vetaas OR (2002) Species richness and altitude: a comparison between null models and interpolated plant species richness along the Himalayan altitudinal gradient, Nepal. Amer Naturalist 159:294–304
Halbritter AH, Fior S, Keller I, et al (2018) Trait differentiation and adaptation of plants along elevation gradients. J Evol Biol 31:784–800
Harrelson SM, Matlack GR (2006) Influence of stand age and physical environment on the herb composition of second-growth forest, Strouds Run, Ohio, USA. J Biogeogr 33:1139–1149
Hijmans RJ, Cameron SE, Parra JL, et al (2005) Very high resolution interpolated climate surfaces for global land areas. Int J Climatol 25:1965–1978
Huston M (1980) Soil nutrients and tree species richness in Costa Rican forests. J Biogeogr 7:147
Huston MA (2014) Disturbance, productivity, and species diversity: empiricism vs. logic in ecological theory. Ecology 95:2382–2396
Jacobs MB (1951) Micro-Kjeldahl method for biologicals. J Amer Pharm Assoc 40:151–153
John R, Dalling JW, Harms KE, et al (2007) Soil nutrients influence spatial distributions of tropical tree species. Proc Natl Acad Sci 104:864–869
Khurana E, Singh JS (2001) Ecology of tree seed and seedlings: Implications for tropical forest conservation and restoration. Curr Sci 80:748–757
Klanderud K, Vandvik V, Goldberg D (2015) The Importance of biotic vs. abiotic drivers of local plant community composition along regional bioclimatic gradients. PLOS ONE 10:e0130205
Kluge J, Worm S, Lange S, et al (2017) Elevational seed plants richness patterns in Bhutan, Eastern Himalaya. J Biogeogr 44:1711–1722
Körner C (2003) Alpine plant life – functional plant ecology of high mountain ecosystems, 2nd ed. Springer, Heidelberg
Körner C (2007) The use of ‘altitude’ in ecological research. Trends Ecol Evol 22:569–574
Laughlin DC, Abella SR (2007) Abiotic and biotic factors explain independent gradients of plant community composition in ponderosa pine forests. Ecol Modelling 205:231–240
Laughlin DC, Bakker JD, Fule PZ (2005) Understorey plant community structure in lower montane and subalpine forests, Grand Canyon National Park, USA. J Biogeogr 32:2083–2102
Lawlor DW, Lemaire G, Gastal F (2001) Nitrogen, plant growth and crop yield. In Lea PJ, Morot-Gaudry J-F (eds) Plant nitrogen. Springer Berlin Heidelberg, Berlin, Heidelberg, pp 343–367
Li M, Feng J (2015) Biogeographical interpretation of elevational patterns of genus diversity of seed plants in Nepal. PLoS ONE 10:e0140992
Li X, Tan H, He M, et al (2009) Patterns of shrub species richness and abundance in relation to environmental factors on the Alxa Plateau: prerequisites for conserving shrub diversity in extreme arid desert regions. Sci China Ser D-Earth Sci 52:669–680
Lin G, Stralberg D, Gong G, et al (2013) Separating the effects of environment and space on tree species distribution: From population to community. PLoS ONE 8:e56171
Maskell LC, Smart SM, Bullock JM, et al (2010) Nitrogen deposition causes widespread loss of species richness in British habitats. Global Change Biol 16:671–679
Merunková K, Chytrý M (2012) Environmental control of species richness and composition in upland grasslands of the southern Czech Republic. Pl Ecol 213:591–602
Miehe G, Pendry CA, Chaudhary R (eds) (2015) Nepal: an introduction to the natural history, ecology and human environment in the Himalayas. Edinburgh, United Kingdom: RoyalBotanic Garden Edinburgh
Molino J-F, Sabatier D (2001) Tree diversity in tropical rain forests: a validation of the intermediate disturbance hypothesis. Science 294:1702–1704
Oksanen J, Blanchet FG, Friendly M et al (2019) vegan: Community ecology package. Available at: https://cran.r-project.org/web/packages/vegan/index.html
Panthi MP, Chaudhary RP, Vetaas OR (2007) Plant species richness and composition in a trans-Himalayan inner valley of Manang district, central Nepal. Himalayan J Sci 4:57–64
Paudel S, Vetaas OR (2014) Effects of topography and land use on woody plant species composition and beta diversity in an arid Trans-Himalayan landscape, Nepal. J Mountain Sci 11:1112–1122
Peters MK, Hemp A, Appelhans T, et al (2016) Predictors of elevational biodiversity gradients change from single taxa to the multi-taxa community level. Nature Commun 7:13736
Polunin O, Stainton A (1984) Flowers of the Himalaya. Oxford University Press, New Delhi, India
Press JR, Shrestha KK, Sutton DA (2000) Annotated checklist of the flowering plants of Nepal. Natural History Museum, London
R Development Core Team (2019) R: A language and environment for statistical computing. Available at www.r-project.org (Accessed 18 March 2018)
Rahbek C (2005) The role of spatial scale and the perception of large-scale species-richness patterns. Ecol Letters 8:224–239
Rokaya MB, Münzbergová Z, Shrestha MR, Timsina B (2012) Distribution patterns of medicinal plants along an elevational gradient in central Himalaya, Nepal. J Mountain Sci 9:201–213
Sahu PK, Sagar R, Singh JS (2008) Tropical forest structure and diversity in relation to altitude and disturbance in a Biosphere Reserve in central India. Appl Veg Sci 11:461–470s
Santaniello F, Line DB, Ranius T, et al (2016) Effects of partial cutting on logging productivity, economic returns and dead wood in boreal pine forest. Forest Ecol Managem 365:152–158
Sharma BM, Kachroo P (1983) Flora of Jammu and plants of neighbourhood. Bishen Singh Mahendra Pal Singh, Dehradun
Shrestha KB, Vetaas OR (2009) Species richness across the forest-line ecotone in an arid trans-Himalayan landscape of Nepal. Folia Geobot 44:247–262
Stainton A (1988) Flowers of the Himalaya: a supplement. Oxford University Press, New Delhi
Timsina B, Rokaya MB, Münzbergová Z, et al (2016) Diversity, distribution and host-species associations of epiphytic orchids in Nepal. Biodivers & Conservation 25:2803–2819
Walkley A, Black IA (1934) An examination of the Degtjareff method for determining soil organic matter, and a proposed modification of the chromic acid titration method. Soil Sci 37:29–38
Wassen MJ, Venterink HO, Lapshina ED, Tanneberger F (2005) Endangered plants persist under phosphorus limitation. Nature 437:547–550
Watson MF, Akiyama S, Ikeda H, et al (eds) (2011) Flora of Nepal: Volume 3. Royal Botanic Garden Edinburgh
Wickham H (2016) ggplot2: elegant graphics for data analysis. Springer-Verlag New York
Yuan ZY, Jiao F, Li YH, Kallenbach RL (2016) Anthropogenic disturbances are key to maintaining the biodiversity of grasslands. Sci Rep 6:srep22132
Zellweger F, Baltensweiler A, Ginzler C, et al (2016) Environmental predictors of species richness in forest landscapes: abiotic factors versus vegetation structure. J Biogeogr 43:1080–1090
Zhao L-P, Wang D, Liang F-H, et al (2019) Grazing exclusion promotes grasses functional group dominance via increasing of bud banks in steppe community. J Environm Managem 251:109589
Acknowledgements
This study was supported by the Kailash Sacred Landscape Conservation and Development Initiative (KSLCDI) a collaborative programme between the Ministry of Forests and Environment, Government of Nepal, Research Centre for Applied Science and Technology (RECAST), Tribhuvan University and International Centre for Integrated Mountain Development (ICIMOD). We are grateful to the Department of National Parks and Wildlife conservation (DNPWC), Ministry of Forests and Soil Conservation, Nepal and Api-Nampa Conservation Area for giving us permission to carry out research. MBR and ZM was supported by the Czech Science Foundation (project 17-10280S) and partly by institutional support RVO 67985939. BT is supported by the National Sustainability Program I (NPU I) (grant number LO1415) of MSMT. We are thankful to Kamal Mohan Ghimire, Santosh Thapa, Khadak Rokaya and local people in Darchula for their help during data collection and Sunil Thapa for preparing the map. Views and interpretations in this publication are those of the authors and are not attributable to funding agencies.
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Subedi, C.K., Rokaya, M.B., Münzbergová, Z. et al. Vascular plant diversity along an elevational gradient in the Central Himalayas, western Nepal. Folia Geobot 55, 127–140 (2020). https://doi.org/10.1007/s12224-020-09370-8
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DOI: https://doi.org/10.1007/s12224-020-09370-8