Predicting the potential distribution of 12 threatened medicinal plants on the Qinghai‐Tibet Plateau, with a maximum entropy model

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(2)

Published: Feb. 1, 2024

Climate change is a vital driver of biodiversity patterns and species distributions, understanding how organisms respond to climate will shed light on the conservation endangered species. In this study, MaxEnt model was used predict potential suitable area 12 threatened medicinal plants in QTP (Qinghai-Tibet Plateau) under current future (2050s, 2070s) three scenarios (RCP2.6, RCP4.5, RCP8.5). The results showed that climatically habitats for were primarily found eastern, southeast, southern, some parts central regions QTP. Moreover, 25% would have reduced habitat areas within next 30-50 years different global warming scenarios. Among these plants, RT (

Language: Английский

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Prediction of Historical, Current, and Future Configuration of Tibetan Medicinal Herb Gymnadenia orchidis Based on the Optimized MaxEnt in the Qinghai–Tibet Plateau

Plants, Journal Year: 2024, Volume and Issue: 13(5), P. 645 - 645

Published: Feb. 26, 2024

Climate change plays a pivotal role in shaping the shifting patterns of plant distribution, and gaining insights into how medicinal plants plateau region adapt to climate will be instrumental safeguarding rich biodiversity highlands. Gymnosia orchidis Lindl. (G. orchidis) is valuable Tibetan resource with significant medicinal, ecological, economic value. However, growth G. severely constrained by stringent natural conditions, leading drastic decline its resources. Therefore, it crucial study suitable habitat areas facilitate future artificial cultivation maintain ecological balance. In this study, we investigated zones based on 79 occurrence points Qinghai–Tibet Plateau (QTP) 23 major environmental variables, including climate, topography, soil type. We employed Maximum Entropy model (MaxEnt) simulate predict spatial distribution configuration changes during different time periods, last interglacial (LIG), Last Glacial (LGM), Mid-Holocene (MH), present, scenarios (2041–2060 2061–2080) under three (SSP126, SSP370, SSP585). Our results indicated that annual precipitation (Bio12, 613–2466 mm) mean temperature coldest quarter (Bio11, −5.8–8.5 °C) were primary factors influencing orchidis, cumulative contribution 78.5%. The driest season had most overall impact. Under current covered approximately 63.72 × 104/km2, encompassing Yunnan, Gansu, Sichuan, parts Xizang provinces, highest suitability observed Hengduan, Yunlin, Himalayan mountain regions. past, area experienced Mid-Holocene, variations total centroid migration direction. scenarios, projected expand significantly SSP370 (30.33–46.19%), followed SSP585 (1.41–22.3%), while contraction expected SSP126. Moreover, centroids exhibited multidirectional movement, extensive displacement (100.38 km2). This provides theoretical foundation for conservation endangered QTP.

Language: Английский

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Prediction of Potential Distribution Patterns of Three Larix Species on Qinghai-Tibet Plateau under Future Climate Scenarios

Forests, Journal Year: 2023, Volume and Issue: 14(5), P. 1058 - 1058

Published: May 21, 2023

How climate change affects the plants on Qinghai-Tibet Plateau (QTP) has become a hot research topic in recent years. It was widely recognized that Larix. are sensitive to change, while corresponding of QTP been rare. Using maximum entropy (MaxEnt) model, we predicted potential distribution patterns Larix potaninii Batalin, griffithii and speciosa this study under different future scenarios. The results demonstrated area suitable habitat for Batalin (Larix griffithii) presented loss (gain) trend, remained unchanged whole. centroids their habits all migrated high-altitude high-latitude areas, suggesting three species may take same survival strategy response change. Annual Precipitation most significant environmental factor influencing pattern Temperature Range speciosa. overlapping 2041–2060 SSP126 scenarios decreased with increasing emission concentration, niches these step towards separation. This suggested strategies findings provide reliable basis conserving endangered

Language: Английский

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Predicting the Potential Distribution of Lagotis Medicinal Plants on the Qinghai‐Xizang Plateau, With a Maximum Entropy Model

Ecology and Evolution, Journal Year: 2025, Volume and Issue: 15(4)

Published: April 1, 2025

ABSTRACT Lagotis is a Tibetan medicine with high medicinal and research value in the Qinghai‐Xizang Plateau region. Predicting its potential suitable areas can provide important references for protection of . This study investigated collected 769 site data six species 28 environmental factor data, used maximum entropy model (MaxEnt) to simulate distribution under three climate scenarios (RCP2.6, RCP6.0, RCP8.5) 2050s 2070s. The results showed that: (1) AUC values training dataset were all > 0.94, indicating that predictions accurate. (2) Altitude (alt), isothermality (bio3), average annual precipitation (bio12) main factors affecting geographical (3) Under current conditions, increase greenhouse gas emission concentration, genus plants are primarily located eastern, central, southern parts Plateau. (4) Compared present period, integra , angustibracteata ramalana area will expand future. suitability macrosiphon shows an increasing trend. moderate brachystachya decreasing, while increasing. In contrast, brevituba decreased greatly. (5) found survival high‐altitude, low‐temperature areas. findings basis cultivation breeding Plateau, migration protection, construction nature reserve communities.

Language: Английский

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Prediction of Changes to the Suitable Distribution Area of Fritillaria przewalskii Maxim. in the Qinghai-Tibet Plateau under Shared Socioeconomic Pathways (SSPs)

Sustainability, Journal Year: 2023, Volume and Issue: 15(3), P. 2833 - 2833

Published: Feb. 3, 2023

The Qinghai–Tibet Plateau has given birth to many indigenous highland plants due its special geographical location and sensitivity climate change. Relevantly, the impact of change on species distribution been a hot issue for research in biogeography. Using maximum entropy (MaxEnt) model, spatial habitat suitability Fritillaria przewalskii Maxim. (FPM) Tibetan was predicted ranked by combining ecological data information actual current distribution. potential trends FPM from 2021 2040, 2041 2060, 2061 2080 2081 2100 under four future scenarios (SSP126, SSP245, SSP370 SSP585) were also predicted. predictions found be highly accurate with AUC values 0.9645 0.9345 training test sets, respectively. A number conclusions could drawn results. Firstly, main factors limiting growth Vegetation types, NPP (net primary production), Soil Bio7 (temperature annual range), Pop (population), Slope, GDP, Aspect, Bio1 (annual mean temperature) Elevation, cumulative contribution 97.6%. Secondly, recent past period 1970–2000, total suitable area accounted 5.55% plateau’s area, which about 14.11 × 104 km2, concentrated eastern central regions. Thirdly, compared previous period, aforementioned will, spanning 2021–2040, increase 14.48%, 16.23%, 16.99%, 21.53% SSP126, SSP370, SSP585 scenarios, This comes an overall expansion trend, areas affected are central-western parts Plateau. other three periods 2041–2060, 2061–2080, 2081–2100 show increases these varying degrees. It is noteworthy that 2061–2080 2081–2100, high decreases or even disappears. Lastly, will shift towards western part

Language: Английский

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Does Reproductive Success in Orchids Affect the Evolution of Their Number of Flowers?

Plants, Journal Year: 2025, Volume and Issue: 14(2), P. 204 - 204

Published: Jan. 13, 2025

Species are disappearing worldwide, and changes in climate land use commonly assumed to be the most important causes. Organisms counteracting negative effects of environmental factors on their survival by evolving various defence strategies, which positively affect fitness. Here, question addressed is: can evolution shape these strategies so that they fitness an organism? This is complex depends taxa factors. Therefore, here, only a special case this studied deceptive species orchids: reproductive success (RS, ratio number fruits flowers produced plant during whole season), used measure develop model describing how RS affects flowers, n, plant. predicts that: (i) resulting relationship between n skewed parabola, (ii) distribution numbers individuals with specific (n) NI(n), also resembles parabola skewed, (iii) peak NI left RS. A large set data presented supports predictions. If small, concave parabolic RS–n dependence obscured other

Language: Английский

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Terrestrial and epiphytic orchids exhibit different diversity and distribution patterns along an elevation gradient of Mt. Victoria, Myanmar

Global Ecology and Conservation, Journal Year: 2023, Volume and Issue: 42, P. e02408 - e02408

Published: Feb. 11, 2023

Orchids have been long fascinating biologists and ecologists because of their remarkable range life history strategies, floral vegetative morphology, pollination syndromes, symbiotic fungi. However, the diversity distribution patterns orchids remain unclear in several regions, seriously hindering understanding orchid maintenance mechanisms. In this study, species richness, abundance, environmental conditions epiphytic terrestrial were investigated along an elevation gradient Mt. Victoria, Myanmar, ranging from 600 to 3000 m with 200-m intervals. A binary species-based network was structured between hosts further address effect on distribution. total, 94 recorded, including 58 36 orchids. hump-shaped pattern richness occurred gradient, highest at ca. 2200 m, whereas follows a monotonous decrease. Both slope significantly affected composition orchids, while also by herb coverage. The exhibited low level connectance, significant nestedness high modularity specialization. Interactions heterogeneously distributed among hosts, as Lithocarpus variolosus, Rhododendron arboretum, Lyonia ovalifolia hosted wide variety hence played important role maintaining bulk few interactions. Twenty (such Sunipia grandiflora, Liparis viridiflora, Porpax grandiflora tsii), which only attached specific host species, may be exposed risk extinction intensification human activities. This study provides basic data for conservation management Myanmar.

Language: Английский

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Richness, distribution, and endemism of neotropical subtribe Ponerinae (Orchidaceae, Epidendreae)

Revista Brasileira de Botânica, Journal Year: 2024, Volume and Issue: 47(2), P. 501 - 517

Published: April 13, 2024

Language: Английский

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Comparitive Chloroplast Genomics of Nine Endangered Habenaria Species and Phylogenetic Relationship of Orchidaceae

Published: June 10, 2024

Habenaria, a member of Orchidaceae family is the cosmopolitan distributions, which has significant medicinal and ornamental values. Regardless morphology molecular data that have been studied in recent times, phylogenetic relationship still under debate. Here, we sequenced, assembled, annotated whole chloroplast (cp) genome two species (Habenaria aitchisonii Rchb.f. Habenaria tibetica Schltr.ex Limpricht) grown on Qinghai-Tibetan Plateau (QTP), combined with seven already published cp genomes may assist to uncover their genomic profiling. The ranged from 155259-155269 bp length both encoded 132 genes, including 86 protein, 38 tRNA 8 rRNA. In genomes, tandem repeats (797), SSRs (2195) diverse loci (3214) were identified. Comparative analyses codon usage, amino frequency, microsatellite, oligo transition transversion substitutions showed similarities among species. Moreover, identified 16 highly polymorphic regions nucleotide diversity above 0.02, be suitable for robust authentic barcoding inferring phylogeny Among regions, positive selection was significantly exerted several genes such as cemA, petA, ycf1. This suggest important adaptation stratagem QTP. displayed H.aitchisonii H. closer than others rest clustered other three groups. Our findings also supported idea could divided into different sections. study enriched genomics resources helpful conservation efforts these endangered

Language: Английский

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Comparison of the chloroplast genomics of nine endangered Habenaria species and phylogenetic analysis

BMC Plant Biology, Journal Year: 2024, Volume and Issue: 24(1)

Published: Nov. 5, 2024

Habenaria, a genus in the family Orchidaceae, are nearly cosmopolitan orchids, and most species have significant medicinal ornamental values. Despite morphological molecular data that been studied recent years, phylogenetic relationship is still unclear. We sequenced, assembled, annotated chloroplast (cp) genomes of two (Habenaria aitchisonii Rchb.f. Habenaria tibetica Schltr.ex Limpricht) grown on Qinghai-Tibetan Plateau (QTP), compared them with seven previously published cp which may aid genomic profiling these species. The ranged from 155,259–155,269 bp length both included 132 genes, encoding 86 proteins, 38 tRNAs 8 rRNAs. In genomes, tandem repeats (797), SSRs (2195) diverse loci (3214) were identified. Comparative analyses codon usage, amino frequency, microsatellite, oligo transition transversion substitutions revealed similarities between Moreover, we identified 16 highly polymorphic regions nucleotide diversity above 0.02, be suitable for robust authentic barcoding inferring phylogeny Among regions, positive selection was significantly exerted several such as cemA, petA, ycf1. This finding suggest an important adaptation strategy QTP. H. more closely related to each other than species, clustered three groups. addition, estimated divergence time suggested separated others approximately 0.39 Mya Neogene period. Our findings also can divided into different sections. results this study enriched genomics resources SSR marker conservation management endangered

Language: Английский

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