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Current patterns of plant diversity and phylogenetic structure on the Kunlun Mountains

Plant Diversity 2022年第1期44卷 30-38页

作者： Wei-Bo Du Peng Jia Guo-Zhen Du State Key Laboratory of Grassland and Agro-Ecosystems School of Life SciencesLanzhou UniversityLanzhouGansu Province730000P.R.China

Large-scale patterns of biodiversity and the underlying mechanisms that regulate these patterns are central topics in biogeography and *** Qinghai-Tibet Plateau serves as a natural laboratory for studying these ***,most previous studies have focused on the entire Qinghai-Tibet Plateau,leaving independent physical geographic subunits in the region less well *** studied the current plant diversity of the Kunlun Mountains,an independent physical geographic subunit located in northwestern China on the northern edge of the Qinghai-Tibet *** integrated measures of species distribution,geological history,and phylogeography,and analyzed the taxonomic richness,phylogenetic diversity,and community phylogenetic structure of the current plant diversity in the *** distribution patterns of 1911 seed plants showed that species were distributed mainly in the eastern regions of the Kunlun *** taxonomic richness,phylogenetic diversity,and genera richness showed that the eastern regions of the Kunlun Mountains should be the priority area of biodiversity conservation,particularly the southeastern *** proportion of Chinese endemic species inhabiting the Kunlun Mountains and their floristic similarity may indicate that the current patterns of species diversity were favored via species *** Hengduan Mountains,a biodiversity hotspot,is likely the largest source of species colonization of the Kunlun Mountains after the *** net relatedness index indicated that 20 of the 28 communities examined were phylo-genetically dispersed,while the remaining communities were phylogenetically *** nearest taxon index indicated that 27 of the 28 communities were phylogenetically *** results suggest that species colonization and habitat filtering may have contributed to the current plant diversity of the Kunlun Mountains via ecological and evolutionary processes,and habitat filtering may play an impor

关键词： Biodiversity Plant community Kunlun mountains phylogenetic structure Seed plants

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Latitudinal and elevational patterns of phylogenetic structure in forest communities in China’s mountains

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Science China(Life Sciences) 2020年第12期63卷 1895-1904页

作者： Gheyur Gheyret Yanpei Guo Jingyun Fang Zhiyao Tang Institute of Ecology College of Urban and Environmental Sciences and Key Laboratory for Earth Surface Processes of Ministry of EducationPeking UniversityBeijing 100871China

The phylogenetic structure incorporates both ecological and evolutionary processes to explain assembly of a local *** "phylogenetic niche conservatism"(PNC) hypothesis suggests that distributions of species along environmental gradients reflect both ancestral traits and ecological fitness of individual species. The temperature is generally regarded to change in similar ways along both latitudinal and elevational gradients but with different historical contingence. Therefore, comparing the latitudinal and elevational patterns of phylogenetic structure of communities is of help to depict the effects of ecological and evolutionary processes in shaping the community assembly. In this study, we explored the latitudinal, elevational and climatic patterns of phylogenetic structure of 569 angiosperm tree communities from 38 mountains across China. We found a larger mean abundance-weighted net relatedness index(NRI) than the presence/absence-based NRI;and the NRI decreased when the species pool downscaled from the full pool to county-level pool. The mean family age and phylogenetic species evenness decreased with latitude, and increased with temperature of the coldest month and precipitation;whilst NRI increased with latitude, and decreased with mean temperature of the coldest month. In most mountains, NRI, mean family age and phylogenetic species evenness showed non-significant trends along the elevational gradient. Our results support the main predictions of PNC for the latitudinal gradient, i.e., species tend to be more phylogenetically related to each other and clades are younger in temperate environments,compared to those in tropical environments. We suggested that independent species pools and abundance should be incorporated in analysis to fully represent the phylogenetic structure of communities.

关键词： community assembly phylogenetic niche conservatism phylogenetic structure environmental filtering species abundance species pool

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Precipitation is the dominant driver for bird species richness,phylogenetic and functional structure in university campuses in northern China

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Avian Research 2020年第3期11卷 302-309页

作者： Chenxia Liang Jun Liu Bin Pan Na Wang Jie Yang Guisheng Yang Gang Feng Ministry of Education Key Laboratory of Ecology and Resource Use of the Mongolian Plateau&Inner Mongolia Key Laboratory of Grassland Ecology School of Ecology and EnvironmentInner Mongolia UniversityHohhot 010021China College of Life Sciences Inner Mongolia UniversityHohhot 010070China Inner Mongolia University of Finance and Economics Hohhot 010051China

Background:Although urbanization is threatening biodiversity worldwide,the increasing green urban spaces could harbor relatively high ***,how to maintain the biodiversity in urban ecosystem is crucial for sustainable urban planning and management,especially in arid and semiarid regions with relatively fragile environment and low ***,for the first time we linked species richness,phylogenetic and functional structure of bird assemblages in university campuses in northern China with plant species richness,glacial-interglacial climate change,contemporary climate,and anthropogenic factors to compare their relative roles in shaping urban bird ***:Bird surveys were conducted in 20 university campuses across Inner Mongolia,*** least squares models and simultaneous autoregressive models were used to assess the relationships between bird species richness,phylogenetic and functional structure with environmental *** equation models were used to capture the direct and indirect effects of these factors on the three components of bird ***:Single-variable simultaneous autoregressive models showed that mean annual precipitation was consistently a significant driver for bird species richness,phylogenetic and functional ***,mean annual temperature and plant species richness were also significant predictors for bird species ***:This study suggests that campuses with warmer and wetter climate as well as more woody plant species could harbor more bird *** addition,wetter campuses tended to sustain over-dispersed phylogenetic and functional *** findings emphasize the dominant effect of precipitation on bird diversity distribution in this arid and semiarid region,even in the urban ecosystem.

关键词： Climate Human factors Functional structure phylogenetic structure Urban bird diversity Woody plant diversity

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phylogenetic and functional structures of succession in plant communities on mounds of Marmota himalayana in alpine regions on the northeast edge of the QinghaieTibet Plateau

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Plant Diversity 2021年第4期43卷 275-280页

作者： Xinhui Li Tao Yang Dandan Wang Guizhou University of Traditional Chinese Medicine Guiyang550025China College of Ecology and Environment Yunnan UniversityKunming650504China

Few studies have examined the succession of plant communities in the alpine *** the succession of plant communities is helpful to understand how species diversity is formed and *** this study,we used species inventories,a molecular phylogeny,and trait data to detect patterns of phylogenetic and functional community structure in successional plant communities growing on the mounds of Himalayan marmots(Marmota himalayana)on the southeast edge of the Qinghai-Tibet *** found that phylogenetic and functional diversities of plant communities on marmot mounds tended to cluster during the early to medium stages of succession,then trended toward overdispersion from medium to late *** species in early and late stages of succession were phylogenetically and functionally overdispersed,suggesting that such communities were assembled mainly through species interactions,especially *** the medium and late stages of succession,alpine communities growing on marmot mounds were phylogenetically and functionally clustered,implying that the communities were primarily structured by environmental *** the medium and late stages of succession the phylogenetic and functional structures of plant communities on marmot mounds differed significantly from those on neighboring *** results indicate that environmental filtering and species interactions can change plant community composition at different successional *** of plant communities on marmot mounds was promoted by a combination of traits that may provide advantages for survival and adaptation during periods of environmental change.

关键词： Community succession Marmota himalayana phylogenetic structure Functional structure QinghaieTibet Plateau

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Global patterns of taxonomic and phylogenetic diversity of flowering plants: Biodiversity hotspots and coldspots

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Plant Diversity 2023年第3期45卷 265-271页

作者： Hong Qian Jian Zhang Meichen Jiang Research and Collections Center Illinois State Museum1011 East Ash StreetSpringfieldIL 62703USA Center for Global Change and Complex Ecosystems Zhejiang Tiantong Forest Ecosystem National Observation and Research StationSchool of Ecological and Environmental SciencesEast China Normal UniversityShanghai 200241China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China

Species diversity of angiosperms(flowering plants) varies greatly among *** patterns of variation in species diversity are shaped by the interplay of ecological and evolutionary ***,using a comprehensive data set for regional angiosperm floras across the world,we show geographic patterns of taxonomic(species) diversity,phylogenetic diversity,phylogenetic dispersion,and phylogenetic deviation(i.e.,phylogenetic diversity after accounting for taxonomic diversity) across the *** diversity is strongly and positively correlated with taxonomic diversity;as a result,geographic patterns of taxonomic and phylogenetic diversity across the world are highly *** with high taxonomic and phylogenetic diversity are located in tropical regions whereas areas with low taxonomic and phylogenetic diversity are located in temperate regions,particularly in Eurasia and North America,and in northern ***,phylogenetic dispersion is,in general,higher in tropical regions and lower in temperate ***,the geographic pattern of phylogenetic deviation differs substantially from those of taxonomic and phylogenetic diversity and phylogenetic *** a result,hotspots and coldspots of angiosperm diversity identified based on taxonomic and phylogenetic diversity and phylogenetic dispersion are incongruent with those identified based on phylogenetic *** of these metrics may be considered when selecting areas to be protected for their biodiversity.

关键词： Angiosperm Biodiversity hotspot phylogenetic diversity phylogenetic structure Species richness

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Climatic correlates of phylogenetic relatedness of woody angiosperms in forest communities along a tropical elevational gradient in South America

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Journal of Plant Ecology 2018年第3期11卷 394-400页

作者： Hong Qian Research and Collections Center Illinois State Museum1011 East Ash StreetSpringfieldIL 62703USA

Aims This study assesses the relationship between phylogenetic relat-edness of angiosperm tree species and climatic variables in local forests distributed along a tropical elevational gradient in South *** particular,this paper addresses two questions:Is phylo-genetic relatedness of plant species in communities related to tem-perature variables more strongly than to water variables for tropical elevational gradients?Is phylogenetic relatedness of plant species in communities driven by extreme climatic conditions(*** temperature(MT)and water deficit)more strongly than by climatic seasonal variability(*** seasonality and precipitation seasonality)?Methods I used a set of 34 angiosperm woody plant assemblages along an elevational gradient in the Andes within less than 5 degrees of the *** relatedness was quantified as net relatedness index(NRI)and nearest taxon index(NTI)and was related to major climatic *** analysis and structure equation modeling approach were used to assess the relationships between phylogenetic relatedness and climatic *** Findings phylogenetic relatedness of angiosperm woody species in the local forest communities is more strongly associated with temperature-related variables than with water-related variables,is positively cor-related with mean annual temperature(MAT)and MT,and is related with extreme cold temperature more strongly than with seasonal temperature *** was related with elevation,MAT and MT more strongly than was *** convergence,rather than niche conservatism,has played a primary role in driving community assem-bly in local forests along the tropical elevational gradient *** correlations of phylogenetic relatedness with elevation and higher correlations of phylogenetic relatedness with elevation and temperature for NTI than for NRI indicate that evolution of cold toler-ance at high elevations in tropical regions primarily occu

关键词： angiosperm woody plants community assembly environmental filtering niche conservatism niche convergence phylogenetic structure tropical South America

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A taxonomic and phylogenetic perspective on plant community assembly along an elevational gradient in subtropical forests

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Journal of Plant Ecology 2021年第4期14卷 702-716页

作者： Ran Zhang Zhaochen Zhang Kankan Shang Mingshui Zhao Jiaxin Kong Xin Wang Yuzhuo Wang Houjuan Song Oukai Zhang Xuan Lv Jian Zhang Zhejiang Tiantong Forest Ecosystem National Observation Research Station School of Ecological and Environmental SciencesEast China Normal UniversityShanghai 200241China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China Shanghai Chenshan Plant Science Research Center Chinese Academy of ScienceShanghai Chenshan Botanical GardenShanghai 201602China Tianmushan National Nature Reserve Management Bureau Hangzhou 311311China

Aims Biodiversity patterns along elevational gradients have been well ***,the variations of biodiversity patterns along elevations and their underlying mechanisms are still *** multiple facets of biodiversity provides novel insights into the mechanisms for driving community *** this study,species abundance information was incorporated into taxonomic and phylogenetic diversity to reveal the ecological and evolutionary forces of plant community assembly along an elevational gradient in subtropical *** We selected 17 woody plant plots along an elevational gradient from 270 to 1470 m in eastern China’s subtropical *** presence-based and abundance-based measures of angiosperm species were used to quantify taxonomic alpha diversity,phylogenetic alpha diversity,phylogenetic relatedness,as well as taxonomic and phylogenetic dissimilarity among these *** the relations between these measures and climatic and topographic variables were *** Findings For both abundance-weighted and unweighted measures,we observed an overall increasing pattern for taxonomic alpha diversity along elevation,and distance-decay trends of taxonomic and phylogenetic similarity with increased elevational ***,there were disparity patterns of phylogenetic alpha diversity between abundance-weighted and unweighted *** phylogenetic structure,there was no significant trend along *** topographical and microclimatic variables were main drivers of diversity patterns and phylogenetic *** with unweighted measures,abundance-weighted measures were strongly related with the slope and stand basal ***,our results prove that deterministic processes mediated by local species abundance imprint on plant community composition along the elevational gradient.

关键词： community phylogenetics phylogenetic structure phylogenetic diversity beta diversity environmental gradient microclimate phylogenetic niche conservatism

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Novel evidence from Taxus fuana forests for niche-neutral process assembling community

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Forest Ecosystems 2022年第3期9卷 378-386页

作者： Tianxiang Li Li Xu Feng Wang Weijun Zhang Junpeng Duan Xiaolu Shen-Tu Yaobin Song Runguo Zang Ming Dong Key Laboratory of Hangzhou City for Ecosystem Protection and Restoration College of Life and Environmental SciencesHangzhou Normal UniversityHangzhou311121China Institute of Forest Ecology Environment and ProtectionChinese Academy of ForestryBeijing100091China

Background:Understanding the mechanisms underlying community assembly is helpful for conservation and restoration of communities, particularly those that contain rare and endangered species like Taxus fuana, which are endemic to the Western Himalayas. The niche (limiting similarity) vs. neutral (randomness) assembly of the *** forest community in Gyirong County, Tibet, China, was investigated. The net relatedness index (NRI) was calculated using a phylogenetic tree. The phylogenetic characteristics of the community and its relationships with environment were ***:The value of the mean NRI at the community level was less than-1.96, indicating that the phylogenetic structure was overdispersed;whereas majority of the NRIs at the tree, shrub, and herb layers were within-1.96 to1.96, indicating random dispersion. Environmental factors accounted for 44.38%, 46.52%, 24.04%, and 14.07%of the variation at the community level, tree, shrub, and herb layer, respectively. The phylogenetic structure at the community level and tree layer were significantly influenced by both topographic and soil factors, while shrub and herb layers tended to be affected by a single environmental ***:Community assembly of the T. fuana forest was simultaneously affected by niche and neutral processes, and their variations were closely related to the environment. Neutral process dominated community assembly in the shrub and herb layers. However, the interaction of limiting similarity and randomness played a dominant role at the community level and tree layer;and contributed to maintenance of biodiversity stability. The synergy of multiple environmental factors had a more obvious influence on community assembly than individual environmental factors, especially at the community level. These findings would help to understand the conservation of rare and endangered tree species, such as T. fuana, in the native community;and highlight the importance of random and non-random

关键词： Community assembly Environmental factors Limiting similarity Niche-neutral process phylogenetic structure Randomness Rare and endangered species Taxus fuana

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phylogenetic Analysis of Chirality of Twining Plants

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Agricultural Science & Technology 2010年第2期11卷 34-38页

作者：林恭华慈海鑫刘永安苏建平中国科学院西北高原生物研究所青海西宁810008 中国科学院研究生院北京100049

phylogenetic relations of twining chirality of Dioscorea *** China were analyzed based on the genes matK,rbcL and trnL;phylogenetic character of higher-level phylogeny of twining plants was analyzed at a high taxon level based on matK gene.A significant phylogenetic framework of chirality was found:(i)based on matK analysis,right-handed Dioscorea species in China congregate completely to form a monophyly;(ii)rbcL and trnL data sets also supported Chinese right-handed Dioscorea a monophyly,although with ex...

关键词： Twining plant Chirality phylogenetic structure Origin

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Pollinator preference and pollinator-mediated competition united to shape the floral color assembly along altitudes in Taiwan

Pollinator preference and pollinator-mediated competition un...

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中国植物学会第十六次全国会员代表大会暨85周年学术年会

作者： Kingchun Tai Encheng Yang Chunneng Wang Institute of Ecology and Evolutionary Biology National Taiwan University Department of Entomology National Taiwan University

A classic view asserted that floral color assembly could be shaped by the pollinator ***,the floral color assembly could be alternatively explained by competition for pollinators they ***,we analyzed the floral color assembly from low altitude to alpine region in a subtropical island Taiwan,through the bee perceptual color space,in an effort to evaluate whether these two models could compatibly account for the floral color assembly along *** found that the diversity of the floral colors in middle（1500-2200 m） and high altitudes（over 2850 m） were significantly lower than that of low altitude regions（below 900 m）,which could be partly explained by the declined abundance of pollinators with increasing ***,the chromatic signals of the alpine species most fit with the discrimination ability of bees’ vision,which suggested that bees might be the most important pollinator in the subtropical alpine *** addition,the alpine species exhibited larger divergence of the floral colors than expected by chance,but no similar trends were observed in low and middle *** considering phylogenetic structure,sympatric alpine species tend to be phylogenetically related（clustering） but floral colors of related species tend to be diverse（weak phylogenetic signal）.This suggested that the related alpine species may evolve different floral colors to reduce the interspecific competition for limited ***,our results first demonstrated that the floral color assembly along altitudes in a subtropical island could respectively adapted to the pollinator preference model and competition mode.

关键词： Pollinator preference Pollinator-mediated competition Floral color assembly Reflectance spectrums Bee color vision phylogenetic structure phylogenetic signal

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