Low genetic diversity and high inbreeding of the endangered yews in Central Himalaya: implications for conservation of their highly fragmented populations

Poudel, Ram C.; Möller, Michael; Liu, Jie; Gao, Lian‐Ming; Baral, Sushim Ranjan; D, Li

doi:10.1111/ddi.12237

Cited by 33 publications

(32 citation statements)

References 78 publications

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“…For all seven species in our study, the modeled predictions of suitable climate consistently indicated that species would need to move to higher elevation and latitudes to track the currently occupied climate niche by the year 2070. These results are in accordance with previous SDM projections across a wide range of species that show a shift either upward or poleward or in both dimensions in suitable climates (Aguirre-Gutiérrez, van Treuren, Hoekstra, van Hintum, & Vaclavik, 2017;He, Wang, Li, & Yi, 2016;Poudel et al, 2014). We also found evidence for westward shifts in suitable climate.…”

Section: Projections In Distributional Shiftssupporting

confidence: 93%

Upward elevation and northwest range shifts for alpine Meconopsis species in the Himalaya–Hengduan Mountains region

Burgess

Yang

et al. 2019

Ecology and Evolution

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Climate change may impact the distribution of species by shifting their ranges to higher elevations or higher latitudes. The impacts on alpine plant species may be particularly profound due to a potential lack of availability of future suitable habitat. To identify how alpine species have responded to climate change during the past century as well as to predict how they may react to possible global climate change scenarios in the future, we investigate the climatic responses of seven species of Meconopsis , a representative genus endemic in the alpine meadow and subnival region of the Himalaya–Hengduan Mountains. We analyzed past elevational shifts, as well as projected shifts in longitude, latitude, elevation, and range size using historical specimen records and species distribution modeling under optimistic (RCP 4.5) and pessimistic (RCP 8.5) scenarios across three general circulation models for 2070. Our results indicate that across all seven species, there has been an upward shift in mean elevation of 302.3 m between the pre‐1970s (1922–1969) and the post‐1970s (1970–2016). The model predictions suggest that the future suitable climate space will continue to shift upwards in elevation (as well as northwards and westwards) by 2070. While for most of the analyzed species, the area of suitable climate space is predicted to expand under the optimistic emission scenario, the area contracts, or, at best, shows little change under the pessimistic scenario. Species such as M. punicea , which already occupy high latitudes, are consistently predicted to experience a contraction of suitable climate space across all the models by 2070 and may consequently deserve particular attention by conservation strategies. Collectively, our results suggest that the alpine high‐latitude species analyzed here have already been significantly impacted by climate change and that these trends may continue over the coming decades.

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Section: Projections In Distributional Shiftssupporting

confidence: 93%

Upward elevation and northwest range shifts for alpine Meconopsis species in the Himalaya–Hengduan Mountains region

Burgess

Yang

et al. 2019

Ecology and Evolution

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“…Recently, Poudel et al (2014) have reported increased level of inbreeding in populations of three Asiatic yew species pointing to a causative role of population fragmentation. According to our results, inbreeding might be the current issue for Cilician fir populations.…”

Section: Genetic Diversitymentioning

confidence: 99%

Effect of geographic range discontinuity on species differentiation—East-Mediterranean Abies cilicica: a case study

Sękiewicz

Dering

Sękiewicz

et al. 2014

Tree Genetics & Genomes

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In the present study, a genetic analysis of nuclear microsatellites was conducted in Abies cilicica populations growing in West Taurus, East Taurus, and Lebanon mountains to obtain evidence for significant genetic differentiation. Despite range fragmentation, all examined populations tended to maintain a relatively high level of genetic diversity (H E = 0.724) and showed moderate genetic differentiation (F ST = 0.134) that is frequently noted in Mediterranean tree species. However, significant inbreeding, bottleneck effect, and low effective population sizes were detected, that may negatively affect species genetic resources. Bayesian clustering revealed three distinct groups, "West Taurus", "East Taurus," and "Lebanon", which reflect geographic structure of the species natural range. Minor genetic admixture between Lebanese and East Taurus populations of A. cilicica was found, but no genetic admixture between Lebanese populations and West Taurus. We argue that significant genetic differentiation discovered among areas of species occurrence is probably due to the effect of long-lasting genetic isolation that started in that region along with the Pleistocene climatic alternation and was further enhanced with human-induced deforestations.

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“…Many geologic and climatologic reports prove that China also has been affected by this complexity (Guo et al, ; Li, Shu, Zhou, Zhao, & Zhang, ; Ma & Gao, ). In order to understand the degree of influence of history on the Chinese flora and fauna, a plethora of phylogeographic researches have focused on the Sino‐Japanese Floristic Region and Qinghai‐Tibet Plateau in recent decades (Li, Yue, Sun, & Qian, ; Li et al, ; Poudel et al, ; Ye, Zhu, Chen, Zhang, & Bu, ). In contrast, few such studies focusing on plant species from northwestern China have been reported (Gao, Meng, & Zhang, ; Zhang & Zhang, ).…”

Section: Introductionmentioning

confidence: 99%

“…of influence of history on the Chinese flora and fauna, a plethora of phylogeographic researches have focused on the Sino-Japanese Floristic Region and Qinghai-Tibet Plateau in recent decades (Li, Yue, Sun, & Qian, 2012;Li et al, 2013;Poudel et al, 2015;Ye, Zhu, Chen, Zhang, & Bu, 2014). In contrast, few such studies focusing on plant species from northwestern China have been reported (Gao, Meng, & Zhang, 2014;Zhang & Zhang, 2012a).…”

mentioning

confidence: 99%

Pleistocene climate change and phylogeographic structure of the Gymnocarpos przewalskii (Caryophyllaceae) in the northwest China: Evidence from plastid DNA, ITS sequences, and Microsatellite

Jia

Zhang

2019

Ecology and Evolution

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Northwestern China has a wealth of endemic species, which has been hypothesized to be affected by the complex paleoclimatic and paleogeographic history during Quaternary. In this paper, we used Gymnocarpos przewalskii as a model to address the evolutionary history and current population genetic structure of species in northwestern China. We employed two chloroplast DNA fragments ( rps 16 and psb B‐ psb I), one nuclear DNA fragment (ITS), and simple sequence repeat (SSRs) to investigate the spatial genetic pattern of G. przewalskii . High genetic diversity (cpDNA: h S = 0.330, h T = 0.866; ITS: h S = 0.458, h T = 0.872) was identified in almost all populations, and most of the population have private haplotypes. Moreover, multimodal mismatch distributions were observed and estimates of Tajima's D and Fu's FS tests did not identify significantly departures from neutrality, indicating that recent expansion of G. przewalskii was rejected. Thus, we inferred that G. przewalskii survived generally in northwestern China during the Pleistocene. All data together support the genotypes of G. przewalskii into three groups, consistent with their respective geographical distributions in the western regions—Tarim Basin, the central regions—Hami Basin and Hexi Corridor, and the eastern regions—Alxa Desert and Wulate Prairie. Divergence among most lineages of G. przewalskii occurred in the Pleistocene, and the range of potential distributions is associated with glacial cycles. We concluded that climate oscillation during Pleistocene significantly affected the distribution of the species.

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Low genetic diversity and high inbreeding of the endangered yews in Central Himalaya: implications for conservation of their highly fragmented populations

Cited by 33 publications

References 78 publications

Upward elevation and northwest range shifts for alpine Meconopsis species in the Himalaya–Hengduan Mountains region

Upward elevation and northwest range shifts for alpine Meconopsis species in the Himalaya–Hengduan Mountains region

Effect of geographic range discontinuity on species differentiation—East-Mediterranean Abies cilicica: a case study

Pleistocene climate change and phylogeographic structure of the Gymnocarpos przewalskii (Caryophyllaceae) in the northwest China: Evidence from plastid DNA, ITS sequences, and Microsatellite

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