Global patterns of species richness of the holarctic alpine herb Saxifraga: the role of temperature and habitat heterogeneity

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dc.creatorLian Liu
dc.creatorYunpeng Liu
dc.creatorJianyong Wu
dc.creatorDimitar Dimitrov
dc.creatorZhiheng Wang
dc.creatorJianquan Liu
dc.creatorXiaoting Xu
dc.creatorLei Zhang
dc.creatorYaoqi Li
dc.creatorNawal Shrestha
dc.creatorDanilo Rafael Mesquita Neves
dc.creatorQinggang Wang
dc.creatorHong Chang
dc.creatorXiangyan Su
dc.date.accessioned2023-06-15T21:32:39Z
dc.date.accessioned2025-09-09T00:29:17Z
dc.date.available2023-06-15T21:32:39Z
dc.date.issued2021
dc.identifier.doihttps://academic.oup.com/jpe/article/15/2/237/6337868?searchresult=1
dc.identifier.issn1752-993X
dc.identifier.urihttps://hdl.handle.net/1843/54983
dc.languagepor
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Plant Ecology
dc.rightsAcesso Aberto
dc.subjectMudanças climáticas
dc.subjectConservantismo
dc.subject.otherClimate change
dc.subject.otherLast Glacial Maximum
dc.subject.otherNiche conservatism
dc.subject.otherRange size
dc.subject.otherWater–energy dynamics
dc.titleGlobal patterns of species richness of the holarctic alpine herb Saxifraga: the role of temperature and habitat heterogeneity
dc.typeArtigo de periódico
local.citation.epage252
local.citation.issue2
local.citation.spage237
local.citation.volume15
local.description.resumoThe effects of contemporary climate, habitat heterogeneity and long-term climate change on species richness are well studied for woody plants in forest ecosystems, but poorly understood for herbaceous plants, especially in alpine–arctic ecosystems. Here, we aim to test if the previously proposed hypothesis based on the richness– environment relationship could explain the variation in richness patterns of the typical alpine–arctic herbaceous genus Saxifraga. Using a newly compiled distribution database of 437 Saxifraga species, we estimated the species richness patterns for all species, narrow- and wide-ranged species. We used generalized linear models and simultaneous autoregressive models to evaluate the effects of contemporary climate, habitat heterogeneity and historical climate on species richness patterns. Partial regressions were used to determine the independent and shared effects of different variables. Four widely used models were tested to identify their predictive power in explaining patterns of species richness. We found that temperature was negatively correlated with the richness patterns of all and wide-ranged species, and that was the most important environmental factor, indicating a strong conservatism of its ancestral temperate niche. Habitat heterogeneity and long-term climate change were the best predictors of the spatial variation of narrow-ranged species richness. Overall, the combined model containing five predictors can explain ca. 40%–50% of the variation in species richness. We further argued that additional evolutionary and biogeographical processes might have also played an essential role in shaping the Saxifraga diversity patterns and should be considered in future studies.
local.identifier.orcidhttps://orcid.org/0000-0003-1856-2530
local.identifier.orcidhttps://orcid.org/0000-0003-1606-0916
local.identifier.orcidhttps://orcid.org/0000-0001-5830-5702
local.identifier.orcidhttps://orcid.org/0000-0002-0855-4169
local.identifier.orcidhttps://orcid.org/0000-0002-3975-1560
local.identifier.orcidhttps://orcid.org/0000-0002-3975-1560
local.publisher.countryBrasil
local.publisher.departmentICB - DEPARTAMENTO DE BOTÂNICA
local.publisher.initialsUFMG
local.url.externahttps://doi.org/10.1093/jpe/rtab085

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