Inferring the evolutionary history of the Sino-Himalayan biodiversity hotspot using Bayesian phylodynamics DOI Creative Commons
Bethany J. Allen,

Timothy G. Vaughan,

Louis du Plessis

et al.

Published: Oct. 14, 2023

The current status of the Sino-Himalayan region as a biodiversity hotspot, particularly for flora, has often been linked to uplift Sino-Tibetan Plateau and Himalayan Hengduan Mountains. However, relationship between topological development onset diversification is yet be confirmed. Here, we apply Bayesian phylodynamic methods large phylogeny angiosperm species from Sino-Himalayas, infer changes in their evolutionary rates through time. We find strong evidence high Paleocene, late Miocene Pliocene, negative Quaternary, driven by an increase extinction rates. Our analyses suggest that global palaeotemperatures are unlikely driving force these rate shifts. Instead, recovery after end-Cretaceous mass extinction, collision Indian continent with Eurasia coeval topographic change Sino-Himalayans, impact Pleistocene glaciations on this altitudinally-variable may shape also demonstrate influence time choice piecewise-constant trajectories phylodynamics, advocate use prior information when making decision.

Language: Английский

Incorporating Genetic Diversity to Optimize the Plant Conservation Network in the Third Pole DOI Creative Commons
Moses C. Wambulwa,

Guang‐Fu Zhu,

Ya‐Huang Luo

et al.

Global Change Biology, Journal Year: 2025, Volume and Issue: 31(3)

Published: March 1, 2025

Climate change poses a significant threat to the survival of many species. Although protected areas can slow down biodiversity loss, they often lack systematic planning and do not integrate genetic diversity. Genetic diversity is key prerequisite for species ability tolerate new conditions. Using population distribution data from 96 plant in Third Pole (encompassing Tibetan Plateau adjacent mountains), we mapped patterns diversity, projected climate-driven range dynamics future erosion, designed an optimal conservation framework region. We identified several patches high haplotype (HD), with relatively number haplotypes southeastern Pole. Regression models revealed that climate topography have interacted shape latitude precipitation being best predictors HD cpDNA nrDNA, respectively. Ecological niche modeling predicted approximate 43 km northwestward 86 m upward shift suitable habitats under scenarios, likely leading loss up 13.19% 15.49% nrDNA Alarmingly, 71.20% newly priority fall outside existing planned National Park Clusters. Therefore, recommend expanding network by 2.02 × 105 km2 (5.91%) Pole, increasing total conserved area 1.36 106 (39.93%) effectively preserve evolutionary potential plants. This study represents innovative attempt incorporate into efforts.

Language: Английский

Citations

2
Inferring the evolutionary history of the Sino-Himalayan biodiversity hotspot using a Bayesian birth–death skyline model DOI Creative Commons
Bethany J. Allen,

Timothy G. Vaughan,

Louis du Plessis

et al.

Geological Society London Special Publications, Journal Year: 2024, Volume and Issue: 549(1)

Published: April 17, 2024

The current status of the Sino-Himalayan region as a biodiversity hotspot, particularly for flora, has often been linked to uplift Sino-Tibetan Plateau and Himalayan Hengduan Mountains. However, relationship between topological development onset diversification is yet be confirmed. Here, we apply Bayesian phylodynamic methods large phylogeny angiosperm species from Sino-Himalayas infer changes in their rates evolution through time. We find strong evidence high Paleocene, late Miocene Pliocene, negative Quaternary driven by an increase extinction rates. Our analyses suggest that global palaeotemperatures are unlikely driving force these rate shifts. Instead, collision Indian continent with Eurasia coeval topographic change Sino-Himalayas, Grassland Expansion impact Pleistocene glaciations on this altitudinally variable may have also demonstrate influence choice times shape inferred piecewise-constant trajectories phylodynamics, advocate use prior information when making decision.

Language: Английский

Citations

11
Flowering plants at Sino‐Himalaya and the Tibetan Plateau face increased extinction risk DOI Open Access
Lina Zhao, Yun Liu,

Jianfei Ye

et al.

Journal of Systematics and Evolution, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 22, 2025

Abstract The loss of biodiversity is one the most serious environmental issues in Anthropocene. Understanding extinction risk species essential for preemptive conservation measures, but hampered by gaps geographical and evolutionary knowledge, especially areas/regions that are highly diverse species. Combined with a 21 109‐taxon angiosperm mega‐phylogeny comprehensive distribution database, we evaluated characteristics at Sino‐Himalaya Tibetan Plateau (SHTP). Overall, our results show there strong interaction between factors on risk, both contribute spatially to threat processing SHTP. angiosperms this region phylogenetically clustered; clades low richness significantly more vulnerable than species‐rich ones; regions highest concentrated mountainous areas southwest China. Integrated existing Red List, further delineated 3000 potentially threatened proposed practical priorities four types showed aggregate characteristics, serving as an important reference predicting trends formulation targeted strategies.

Language: Английский

Citations

1
Assessing the Regional Climate Response to Different Hengduan Mountains Geometries With a High‐Resolution Regional Climate Model DOI Creative Commons
Ruolan Xiang, Christian R. Steger, Shuping Li

et al.

Journal of Geophysical Research Atmospheres, Journal Year: 2024, Volume and Issue: 129(6)

Published: March 19, 2024

Abstract The Hengduan Mountains (HM) are located on the southeastern edge of Tibetan Plateau and feature high mountain ridges (>6,000 m MSL) separated by deep valleys. HM region also features an exceptionally biodiversity, believed to have emerged from topography interacting with climate. To investigate role regional climate, we conduct simulations climate model COSMO at horizontal resolutions (at ∼12 km a convection‐permitting scale ∼4.4 km) for period 2001–2005. We one control simulation modern two idealized experiments modified topography, inspired past geological processes that shaped range. In first experiment, reduce HM's elevation applying spatially non‐uniform scaling topography. results show that, following uplift HM, local rainy season precipitation increases ∼25%. Precipitation in Indochina Bay Bengal (BoB) intensifies. Additionally, cyclonic circulation BoB extends eastward, indicating intensification East Asian summer monsoon. second remove valleys envelope quantify effects terrain undulation amplitude frequency On western flanks slightly increases, while remaining fraction range experiences ∼20% less precipitation. Simulations suggest overall positive feedback between precipitation, erosion, valley deepening this region, which could influenced diversification organisms.

Language: Английский

Citations

5
Unraveling the Impact of Environmental Factors and Evolutionary History on Species Richness Patterns of the Genus Sorbus at Global Level DOI Creative Commons
Yujia Pan, Chenlong Fu,

Chang‐Fen Tian

et al.

Plants, Journal Year: 2025, Volume and Issue: 14(3), P. 338 - 338

Published: Jan. 23, 2025

Understanding the drivers of species richness patterns is a major goal ecology and evolutionary biology, vary across regions taxa. Here, we assessed influence environmental factors history on pattern in genus Sorbus (110 species). We mapped global at spatial resolution 200 × km, using 10,652 specimen records. used stepwise regression to assess relationship between 23 predictors estimated diversification rate based chloroplast genome data. The effects were explained by adjusted R2, inferred differences rates. found that was highest Hengduan Mountains (HDM), which probably center diversity. Among selected predictors, integrated model including all had largest explanatory power for richness. determinants show regional differences. On continental scale, energy water availability become main driving factors. In contrast, climate seasonality primary factor HDM. results showed no significant HDM non-HDM, suggesting may have limited impact conclude play an important role shaping richness, while rates lesser impact.

Language: Английский

Citations

0
Increasing drying changes the relationship between biodiversity and ecosystem multifunctionality DOI Creative Commons
Chaoran Li, Jun Hou, Ming Kong

et al.

npj Biofilms and Microbiomes, Journal Year: 2025, Volume and Issue: 11(1)

Published: May 6, 2025

Increased drying of rivers under global climate change is leading to biodiversity loss. However, it not clear whether loss affects river functions. In this study, we investigated the changes in biofilm community diversity and functions an artificial stream after different durations. A critical duration around 60 days was found microbial composition Therefore, durations can be divided into short-term (~0-20 days) long-term (~60-130 analyse effect terms ecosystem summary, dominant relationship on stability got uncoupled drying. Community assembly became maintaining multifunctionality with increasing rather than as traditionally perceived. This study reveals importance assembly, extending theoretical knowledge between multifunctionality.

Language: Английский

Citations

0
Why plant diversity and distribution matter DOI Open Access
Alexandre Antonelli, Rafaël Govaerts, Eimear Nic Lughadha

et al.

New Phytologist, Journal Year: 2023, Volume and Issue: 240(4), P. 1331 - 1336

Published: Oct. 9, 2023

This article is the Editorial for Special Collection ‘Global plant diversity and distribution’. See https://www.newphytologist.org/global-plant-diversity more details.

Language: Английский

Citations

9
Plant species diversification in the Himalaya–Hengduan Mountains region: an example from an endemic lineage of Pedicularis (Orobanchaceae) in the role of floral specializations and rapid range expansions DOI
Rong Liu,

Wei‐Jia Wang,

Hong Wang

et al.

Cladistics, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 11, 2024

Abstract The c. 270 endemic species of Pedicularis in the Himalaya–Hengduan Mountains (HHM) region exhibit high diversity geographic distribution, elevational range and floral morphology. Many these, including with longest corolla tubes beaked galeas, are monophyletic represent a putative situ radiation. In this study, we focus on representative Clade 3 within HHM region. We integrate plastid phylogeny clade environmental data distributions to infer correlates diversity. estimate macroevolutionary rates reconstructed ancestral states for ranges traits, analyse patterns overlap niche evolution assess drivers diversification Our results show that from northwest Yunnan southwest Sichuan is centre . Rates associated precipitation multiple factors. Multiple expansions Sanjiang (Three Parallel Rivers) region, followed by allopatric speciation across contributed early rapid diversification. Corolla traits not significantly This study highlights importance integrated evidence understanding dynamics contributes our origins remarkable richness plant

Language: Английский

Citations

2
The Diversity and Community Pattern of Liverworts in Sygera Mountain DOI Open Access

Xiaotong Shao,

Jiqi Gu,

Ye Yanhui

et al.

Published: Oct. 30, 2023

Elevation has been a cornerstone of biodiversity research, and changes in the environmental factors behind it influence community patterns. Exploring potential reasons liverwort patterns matter multiplied interest for ecologists. In present study, we assessed plants Sygera Mountain from 3100 m to 4500 decaying wood, tree, soil, rock using complex field surveys 2017 2019, investigated effects altitude various climatic on diversity composition Mountain. Also, used including ANOVA, mixed modeling, NMDS, ANOSIM, CCA, which helped critically assess with respect variables. The results study showed bimodal variation richness communities altitude, peaks occurring at 3500 4100 m. was significant, 4300 being associated arid environments, those 3300 favoring areas higher mean annual temperatures precipitation. Among factors, diurnal rang, precipitation, temperature found be determinant communities. suggest that elevation daily fluctuations play crucial role distribution structure formation mountain plants. This deepens our understanding ecology emphasizes importance variables determining plant composition.

Language: Английский

Citations

1
Analysis of Factors Influencing Plant Diversity in Urban Wetlands Based on a Structural Equation Model DOI
Yue Wang, Guofu Yang, Biao Wei

et al.

Wetlands, Journal Year: 2024, Volume and Issue: 44(3)

Published: Feb. 17, 2024

Language: Английский

Citations

0