Hong Qian

ORCID: 0000-0002-1381-7496
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About
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Research Areas
  • Ecology and Vegetation Dynamics Studies
  • Plant and animal studies
  • Species Distribution and Climate Change
  • Plant Diversity and Evolution
  • Botany and Plant Ecology Studies
  • Plant and Fungal Species Descriptions
  • Botany, Ecology, and Taxonomy Studies
  • Wildlife Ecology and Conservation
  • Bryophyte Studies and Records
  • Lichen and fungal ecology
  • Evolution and Paleontology Studies
  • Fern and Epiphyte Biology
  • Forest ecology and management
  • Animal Ecology and Behavior Studies
  • Lymphoma Diagnosis and Treatment
  • Genetic diversity and population structure
  • Peatlands and Wetlands Ecology
  • Genomic variations and chromosomal abnormalities
  • Tree-ring climate responses
  • Amphibian and Reptile Biology
  • Plant Parasitism and Resistance
  • Genomics and Rare Diseases
  • Isotope Analysis in Ecology
  • Mediterranean and Iberian flora and fauna
  • Environmental and Agricultural Sciences

Illinois State Museum
2016-2025

Kunming Institute of Botany
2017-2024

Chinese Academy of Sciences
2004-2024

University of Washington Applied Physics Laboratory
2024

East China Normal University
2022-2023

University of British Columbia
1995-2022

Illinois Archaeological Survey
2020-2022

University of Illinois Urbana-Champaign
2020-2022

Sichuan University
2022

West China Hospital of Sichuan University
2022

We present V.PhyloMaker, a freely available package for R designed to generate phylogenies vascular plants. The mega‐tree implemented in V.PhyloMaker (i.e. GBOTB.extended.tre), which was derived from two recently published mega‐trees and includes 74 533 species all families of extant plants, is the largest dated phylogeny can very large lists (the list that we tested included 314 686 species). generates at fast speed, much faster than other phylogeny‐generating packages. Our tests show...

10.1111/ecog.04434 article EN Ecography 2019-03-16

AimsThe aim of this article is 3-fold. First, we present an updated version a published megaphylogeny vascular plants that can be used in studies plant ecology and biogeography. Second, develop tool by botanists ecologists to generate phylogenetic hypotheses three scenarios. Third, use set regional assemblages angiosperm trees North America as model system evaluate the effect differences phylogenies generated using scenarios on quantification properties relationship between measures environment.

10.1093/jpe/rtv047 article EN Journal of Plant Ecology 2015-06-15

An earlier version of V.PhyloMaker has been broadly used to generate phylogenetic trees vascular plants for botanical, biogeographical and ecological studies. Here, we update enlarge this package, which is now called 'V.PhyloMaker2'. With V.PhyloMaker2, one can a tree based on three different botanical nomenclature systems. V.PhyloMaker2 phylogenies very large species lists (the largest list that tested included 365,198 species). generates at fast speed. We provide an example (including...

10.1016/j.pld.2022.05.005 article EN cc-by-nc-nd Plant Diversity 2022-05-27

Abstract The diversity of a region reflects both local and the turnover species (beta diversity) between areas. angiosperm flora eastern Asia (EAS) is roughly twice as rich that North America (ENA), in spite similar area climate. Using province/state‐level floras, we calculated beta slope relationship log similarity ( S ) either geographic distance or difference Distance‐based was 2.6 times greater north–south direction EAS than ENA 3.3 east–west direction. When ln related to climate...

10.1111/j.1461-0248.2004.00682.x article EN Ecology Letters 2004-10-20

Facioscapulohumeral muscular dystrophy (FSHD) is an autosomal dominant disorder linked to contractions of the D4Z4 repeat array in subtelomeric region chromosome 4q. By comparing genome-wide gene expression data from muscle biopsies patients with FSHD those 11 other neuromuscular disorders, paired-like homeodomain transcription factor 1 (PITX1) was found specifically up-regulated FSHD. In addition, we showed that double homeobox 4 (DUX4) maps within unit patient myoblasts at both mRNA and...

10.1073/pnas.0708659104 article EN Proceedings of the National Academy of Sciences 2007-11-06

Species turnover, or beta diversity, has been predicted to decrease with increasing latitude, but few studies have tested this relationship. Here, we examined the diversity-latitude relationship for vascular plants at a continental scale, based on complete species lists of native entire states provinces in North America (north Mexico). We calculated diversity as slope between natural logarithm Jaccard index (lnJ ) families, genera species, and both geographic distance climate difference...

10.1111/j.1461-0248.2007.01066.x article EN Ecology Letters 2007-06-10

A major focus of geographical ecology and macroecology is to understand the causes spatially structured ecological patterns. However, achieving this understanding can be complicated when using multiple regression, because relative importance explanatory variables, as measured by regression coefficients, shift depending on whether explicit or non‐spatial modeling used. extent which coefficients may why shifts occur are unclear. Here, we analyze relationship between environmental predictors...

10.1111/j.1600-0587.2009.05717.x article EN Ecography 2009-03-13

The previously released packages of the PhyloMaker series (i.e. S.PhyloMaker, V.PhyloMaker, and V.PhyloMaker2) have been broadly used to generate phylogenetic trees for ecological biogeographical studies. Although these can be any groups plants animals which megatrees are available, they focus on generating based provided by packages. How use other is not straightforward. Here, we present a new tool, called 'U.PhyloMaker', simple R script that easily large both at relatively fast speed.

10.1016/j.pld.2022.12.007 article EN cc-by-nc-nd Plant Diversity 2022-12-24

Abstract Exotic species have begun to homogenize the global biota, yet few data are available assess extent of this process or factors that constrain its advance at continental scales. We evaluate homogenization vascular plants across America north Mexico by comparing similarity in complete native and exotic floras between states provinces USA Canada. Compared with species, distributed haphazardly among areas but spread more widely, producing differentiation neighbouring greater distance....

10.1111/j.1461-0248.2006.00982.x article EN Ecology Letters 2006-10-18

ABSTRACT Aim To test the hypothesis that plant species with a higher dispersal ability have lower beta diversity. Location North America north of Mexico. Method Propagules pteridophytes (ferns and their allies) are more vagile than propagules spermatophytes (gymnosperms angiosperms), thus do spermatophytes. The study area was divided into 71 geographical units distributed in five latitudinal zones. Species lists were compiled for each unit. Three measures diversity used: β sim , which is one...

10.1111/j.1466-8238.2009.00450.x article EN Global Ecology and Biogeography 2009-03-12

Abstract Clinical correlative studies have linked 1p36 deletions with worse prognosis in follicular lymphoma (FL). In this study, we sought to identify the critical gene(s) region that is responsible for conferring inferior prognosis. BAC array technology applied 141 FL specimens detected a minimum of deletion (MRD) ∼97 kb within 1p36.32 20% these cases. Frequent single-nucleotide polymorphism–detected copy-neutral loss heterozygosity was also found region. Analysis promoter CpGs MRD did not...

10.1158/0008-5472.can-10-2460 article EN Cancer Research 2010-10-01

We compiled 46 broadscale data sets of species richness for a wide range terrestrial plant, invertebrate, and ectothermic vertebrate groups in all parts the world to test ability metabolic theory account observed diversity gradients. The makes two related predictions: (1) ln-transformed is linearly associated with linear, inverse transformation annual temperature, (2) slope relationship near −0.65. Of sets, 14 had no significant relationship; remaining 32, nine were meeting prediction 1....

10.1890/06-1444.1 article EN Ecology 2007-08-01

Understanding what drives the variation in species composition and diversity among local communities can provide insights into mechanisms of community assembly. Because ecological traits are often thought to be phylogenetically conserved, there should patterns phylogenetic structure along gradients. We investigate potential angiosperm assemblages an elevational gradient with a steep Changbaishan, China. used 13 forest plots (32×32 m) distributed from 720 1900 m above sea level. Faith's...

10.1093/jpe/rtt072 article EN Journal of Plant Ecology 2014-01-24

ABSTRACT Aim To distinguish the effects of geographic distance and environmental dissimilarity on global patterns species turnover in four classes terrestrial vertebrates (mammals, birds, reptiles amphibians). Location Six hundred sixty ecoregions across globe. Methods We calculated between each pair ecoregions, using Jaccard index ( J ). selected seven variables to quantify environment ecoregion, subjected values a principal components analysis. For realm, we applied multiple regression...

10.1111/j.1466-8238.2011.00672.x article EN Global Ecology and Biogeography 2011-05-04

Significance Ecological and evolutionary processes work together in the assembly of regional local communities from available species pools based on traits linked to ecological tolerances. Because phylogenies summarize history clades within them, phylogeny-based approaches are essential understanding origin variation richness across environmental gradients. Here, we analyze, a phylogenetic context, comprehensive dataset distributions seed plants China. Specifically, examined relationships...

10.1073/pnas.1822153116 article EN Proceedings of the National Academy of Sciences 2019-10-28

Phylogenies are essential to studies investigating the effect of evolutionary history on assembly species in ecological communities and geographical patterns phylogenetic structure assemblages. Because phylogenies well resolved at level lacking for many major groups organisms such as vascular plants, researchers often generate a species-level using phylogeny genus backbone attaching their respective genera polytomies or by megaphylogeny adding additional genera. However, whether result study...

10.1016/j.pld.2020.11.005 article EN cc-by-nc-nd Plant Diversity 2020-11-28

Significance Phylogenetic diversity is a measure of biodiversity that incorporates both the number species and their evolutionary histories. Comparisons between regions are currently ecologically similar but support different numbers informed by considering differences in geographic Here we analyze numerous floras distributed across eastern Asia North America, find phylogenetic substantially exceeds America when controlling statistically for climate richness. This difference parallels more...

10.1073/pnas.1703985114 article EN Proceedings of the National Academy of Sciences 2017-10-09

The scientific names of organisms are key identifiers plants and animals. Correctly treating is a prerequisite for biodiversity research documentation. Here, we present an R package, 'U.Taxonstand', which can standardize harmonize in plant animal species lists at fast speed high rate matching success. Unlike most other similar packages each works with only one taxonomic database, U.Taxonstand work all databases, as long they properly formatted. Multiple databases animals that be directly...

10.1016/j.pld.2022.09.001 article EN cc-by-nc-nd Plant Diversity 2022-09-08

Species diversity of angiosperms (flowering plants) varies greatly among regions. Geographic patterns variation in species are shaped by the interplay ecological and evolutionary processes. Here, using a comprehensive data set for regional angiosperm floras across world, we show geographic taxonomic (species) diversity, phylogenetic dispersion, deviation (i.e., after accounting diversity) world. Phylogenetic is strongly positively correlated with diversity; as result, world highly similar....

10.1016/j.pld.2023.01.009 article EN cc-by-nc-nd Plant Diversity 2023-02-04

Abstract The tendency of species to retain ancestral ecological distributions (phylogenetic niche conservatism) is thought influence which from a pool can persist in particular environment. Thus, investigating the relationships between measures phylogenetic structure and environmental variables at global scale help understand variation richness biological assemblages across world. Here, we analyze comprehensive data set including 341,846 391 angiosperm floras worldwide explore for...

10.1038/s41467-024-45155-9 article EN cc-by Nature Communications 2024-02-05

Numbers of taxa at the level order, family, genus, and species were tabulated for 12 subclass‐level taxonomic groups vascular plants in floras China United States. Analysis these data showed that flora is significantly more diverse than Furthermore, difference diversity arises below genera. Finally, euasterids II Caryophyllidae are exceptions to general trend being As a result, States different nonrandom samples North Temperate Zone world. Phylogenetically older have larger proportion genera...

10.1086/303230 article EN The American Naturalist 1999-08-01

1 We evaluated geographical and climate distributions of 57 vascular plant genera that have disjunct primarily restricted to south-eastern Asia (EAS) North America (ENA). Because clades each genus in the two regions are considered sister taxa, differences ecological relationships between reflect independent evolutionary responses environmental factors allow a test conservatism or parallelism. 2 The were found be distributed 270 grid cells, 163 EAS 107 ENA, with 3.75° extent latitude...

10.1111/j.0022-0477.2004.00868.x article EN Journal of Ecology 2004-03-23
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