Niche width analyses facilitate identification of high-risk endemic species at high altitudes in western Himalayas

High-elevation mountain communities are progressively threatened by habitat fragmentation and climate change resulting in habitat shift and biodiversity loss. Despite it, very few studies have focussed on niche distribution and diversity pattern of non-native and native plant species in high mountai...

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Autores principales:	Mustaqeem Ahmad, Padma Sharma, Sonia Rathee, Harminder P. Singh, Daizy R. Batish, Gowher R. Lone, Shalinder Kaur, Vikrant Jaryan, Ravinder Kumar Kohli
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Niche width Climate change Habitat shifting High extinction risk Heterogeneity Conservation prioritization Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/7fb5e34c7bd4499596f99bb703bb2ff0
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spelling	oai:doaj.org-article:7fb5e34c7bd4499596f99bb703bb2ff02021-12-01T04:50:38ZNiche width analyses facilitate identification of high-risk endemic species at high altitudes in western Himalayas1470-160X10.1016/j.ecolind.2021.107653https://doaj.org/article/7fb5e34c7bd4499596f99bb703bb2ff02021-07-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21003186https://doaj.org/toc/1470-160XHigh-elevation mountain communities are progressively threatened by habitat fragmentation and climate change resulting in habitat shift and biodiversity loss. Despite it, very few studies have focussed on niche distribution and diversity pattern of non-native and native plant species in high mountain communities, and their role in identifying endemic species with high extinction risk in Himalayas. To determine niche width and diversity pattern of species based on the nativity, and ascertain the role of niche width in conservation prioritization of endemic/native species, four sites were selected in western Himalayas. We analysed diversity indices (based on native, non-native, and total species) such as Species richness, Simpson index, Chao-1 index, Whittaker index (βw), and species niche width across the elevational gradient in study sites. Non-native species were found to thrive in lower elevations. The niche width of non-native species declined with increase in elevation, but a few non-native species had a broad niche width (habitat generalist). Such habitat generalist species may lead to the displacement of endemic or native habitat specialist species (having narrow niche width). Species like Aconitum heterophyllum, Aconitum violaceum, Bergenia stracheyi, Dactylorhiza hatagirea, Jurinea dolomiaea, Sinopodophyllum hexandrum, Morina longifolia, and Roscoea alpina etc. were found to have a narrow niche width. Such species will face an extinction risk due to the upward shift of non-native species. The high elevational plant communities are more susceptible to extinction risk due to the accelerated spread of non-native species influenced by climate change. This study emphasizes the crucial need to implement strategies for the control of non-native species, describing species compositional changes at higher elevations, and aids to efficiently identify and conserve native species under high extinction risk.Mustaqeem AhmadPadma SharmaSonia RatheeHarminder P. SinghDaizy R. BatishGowher R. LoneShalinder KaurVikrant JaryanRavinder Kumar KohliElsevierarticleNiche widthClimate changeHabitat shiftingHigh extinction riskHeterogeneityConservation prioritizationEcologyQH540-549.5ENEcological Indicators, Vol 126, Iss , Pp 107653- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Niche width Climate change Habitat shifting High extinction risk Heterogeneity Conservation prioritization Ecology QH540-549.5
spellingShingle	Niche width Climate change Habitat shifting High extinction risk Heterogeneity Conservation prioritization Ecology QH540-549.5 Mustaqeem Ahmad Padma Sharma Sonia Rathee Harminder P. Singh Daizy R. Batish Gowher R. Lone Shalinder Kaur Vikrant Jaryan Ravinder Kumar Kohli Niche width analyses facilitate identification of high-risk endemic species at high altitudes in western Himalayas
description	High-elevation mountain communities are progressively threatened by habitat fragmentation and climate change resulting in habitat shift and biodiversity loss. Despite it, very few studies have focussed on niche distribution and diversity pattern of non-native and native plant species in high mountain communities, and their role in identifying endemic species with high extinction risk in Himalayas. To determine niche width and diversity pattern of species based on the nativity, and ascertain the role of niche width in conservation prioritization of endemic/native species, four sites were selected in western Himalayas. We analysed diversity indices (based on native, non-native, and total species) such as Species richness, Simpson index, Chao-1 index, Whittaker index (βw), and species niche width across the elevational gradient in study sites. Non-native species were found to thrive in lower elevations. The niche width of non-native species declined with increase in elevation, but a few non-native species had a broad niche width (habitat generalist). Such habitat generalist species may lead to the displacement of endemic or native habitat specialist species (having narrow niche width). Species like Aconitum heterophyllum, Aconitum violaceum, Bergenia stracheyi, Dactylorhiza hatagirea, Jurinea dolomiaea, Sinopodophyllum hexandrum, Morina longifolia, and Roscoea alpina etc. were found to have a narrow niche width. Such species will face an extinction risk due to the upward shift of non-native species. The high elevational plant communities are more susceptible to extinction risk due to the accelerated spread of non-native species influenced by climate change. This study emphasizes the crucial need to implement strategies for the control of non-native species, describing species compositional changes at higher elevations, and aids to efficiently identify and conserve native species under high extinction risk.
format	article
author	Mustaqeem Ahmad Padma Sharma Sonia Rathee Harminder P. Singh Daizy R. Batish Gowher R. Lone Shalinder Kaur Vikrant Jaryan Ravinder Kumar Kohli
author_facet	Mustaqeem Ahmad Padma Sharma Sonia Rathee Harminder P. Singh Daizy R. Batish Gowher R. Lone Shalinder Kaur Vikrant Jaryan Ravinder Kumar Kohli
author_sort	Mustaqeem Ahmad
title	Niche width analyses facilitate identification of high-risk endemic species at high altitudes in western Himalayas
title_short	Niche width analyses facilitate identification of high-risk endemic species at high altitudes in western Himalayas
title_full	Niche width analyses facilitate identification of high-risk endemic species at high altitudes in western Himalayas
title_fullStr	Niche width analyses facilitate identification of high-risk endemic species at high altitudes in western Himalayas
title_full_unstemmed	Niche width analyses facilitate identification of high-risk endemic species at high altitudes in western Himalayas
title_sort	niche width analyses facilitate identification of high-risk endemic species at high altitudes in western himalayas
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/7fb5e34c7bd4499596f99bb703bb2ff0
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Niche width analyses facilitate identification of high-risk endemic species at high altitudes in western Himalayas

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