Geographic patterns and climatic drivers of the mean genus age of liverworts in North America

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外文标题：Geographic patterns and climatic drivers of the mean genus age of liverworts in North America

外文摘要：Phylogenetic niche conservatism posits that species tend to retain ancestral ecological traits and dis-tributions,which has been broadly tested for lineages originating in tropical climates but has been rarely tested for lineages that originated and diversified in temperate climates.Liverworts are thought to originate in temperate climates.Mean lineage age reflects evolutionary history of biological commu-nities.Here,using regional liverwort floras across a long latitudinal gradient from tropical to arctic cli-mates in North America,we test the age-component of the temperate niche conservatism hypothesis.Mean genus age(MGA)was estimated for each of 76 regional floras of liverworts.We related MGA to climatic variables for North America as a whole and for its eastern and western parts separately,and used variation partitioning analysis to assess the relative importance of temperature-versus precipitation-related variables and of climate extremes versus seasonality on MGA.We found that older genera of liverworts tend to concentrate in humid regions of intermediate temperatures in the range of 10 ℃-20 ℃,from which liverworts have adapted to and diversified into more arid,colder,and hotter regions,supporting the temperate niche conservatism hypothesis.We also found that across North America the MGA of liverwort assemblages is more strongly affected by precipitation-related variables than by temperature-related variables,and is more strongly affected by climate extremes than by climate sea-sonality.Geographic patterns of the MGA of liverworts are consistent with the temperate niche conservatism hypothesis,rather than the tropical niche conservatism hypothesis,the latter of which is broadly supported by angiosperms.

外文关键词：

BryophytesEnvironmental gradientEarly land plantsLatitudinal gradientMean lineage agePhylogenetic niche conservatism

作者：

Hong Qian、Jian Wang、Shenhua Qian、Michael Kessler

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作者单位：

Research and Collections Center,Illinois State Museum,1011 East Ash Street,Springfield,IL 62703,USA

Bryology Laboratory,School of Life Sciences,East China Normal University,Shanghai 200241,China

Shanghai Institute of Eco-Chongming(SIEC),3663 Northern Zhongshan Road,Shanghai 200062,China

Key Laboratory of the Three Gorges Reservoir Region's Eco-Environment,Ministry of Education,Chongqing University,Chongqing 400045,China

College of Environment and Ecology,Chongqing University,Chongqing 400045,China

Department of Systematic and Evolutionary Botany,University of Zurich,Zurich 8008,Switzerland

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关键词：

Bryophytes Environmental gradient Early land plants Latitudinal gradient Mean lineage age Phylogenetic niche conservatism

出版年：

2024

DOI：

10.1016/j.pld.2024.07.002

植物多样性(英文)

中国科学院昆明植物研究所，中国植物学会

植物多样性(英文)

CSTPCD

影响因子：0.617

ISSN：2096-2703

年,卷(期)：2024.46(6)