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Abstract Detail


Ecological Section

Subedi, Suresh C. [1], Chaudhary, R.P. [2], Bhattarai, Khem R. [3].

Distribution pattern of Manang’s species along the whole Himalayan elevation gradient and their fate against global warming.

Himalayan Mountains are an excellent system to evaluate ecological and biogeographical theories of species diversity, and estimate the consequences of species against global warming. This study aims to find the altitudinal and longitudinal distribution pattern of species reported from Manang along the whole Himalayan elevation gradient and evaluate their fate against climate change. Data for this study has been collected from primary as well as secondary sources. The distribution range along the elevation gradient of species is interpolated between its upper and lower elevation limits. The relationship between elevation and species richness was estimated by generalized linear model. The consequence of species against global warming is estimated based upon the projected temperature change during the next century and lapse rate along the elevation gradient of the Himalayas. Distribution of species is observed below and above than Manang valley. The species richness has a hump-shaped relationship with elevation and the richness pattern among the three biogeographical regions is identical. Among 303 species considered in this study, only two species (Pedicularis axillaries and Taraxacum sikkimense) confined to 200 m and two species (Lonicera purpurascens and Taraxacum tibetanum) confined to 300 m elevation range. There are altogether eleven species (e.g. Aconitum naviculare Berberis koehneana var. auramea, Epilobium angustifolium, Hypecoun leptocarpum) having the elevation range shorter than 500 m. The majority of species have elevation range longer than 500 m. There are 225 species, which have elevation range longer than 1000 m. Thus, global warming during the next centaury in this mountainous region might not influence majority of the species. However, this hypothesis needs to be tested and verified by further study.


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1 - Tribhuvan University, Central Department of Botany, P.O.Box 24407, Sundhara, Kathamndu, 44601, Nepal
2 - Tribhuvan University, Central Department of Botany, Kirtipur, Kathmandu, Kathmandu, 44601, Nepal
3 - National Herbarium and Plant Laboratories, Ecology, Godavari, Lalitpur, Kathmandu, 44601, Nepal

Keywords:
distribution pattern.

Presentation Type: Poster:Posters for Sections
Session: P
Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton
Date: Sunday, July 8th, 2007
Time: 8:00 AM
Number: P49004
Abstract ID:104


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