Patterns and drivers of phylogenetic structure of pteridophytes in China
Qian,Hong; Kessler,Michael; Deng,Tao; Jin,Yi
AbstractAim Previous studies have found strikingly different geographical patterns of phylogenetic diversity of gymnosperms and angiosperms, which have been suggested to result, in part, from the greater age of the former. To assess the effects of clade age on phylogenetic structure, we assessed phylodiversity patterns of pteridophytes (lycophytes and ferns), which combine ancient and modern lineages, across China. Location China. Time period Present day. Taxon Pteridophytes. Methods We divided China into 66 regions and collated species lists of pteridophytes for each region. We then related taxonomic and phylogenetic diversity, and their related metrics, to six climatic variables for pteridophytes as a whole and for different evolutionary clades. We examined the effect of spatial autocorrelation among regional floras on the results. Results We found that when all pteridophytes or ferns were considered, the patterns resembled those of gymnosperms, presumably reflecting the effects of several ancient global mass extinctions and the relict distribution of old families. In contrast, when we considered only the modern Polypodiales radiation, which accounts for three-quarters of current fern diversity and is about as old as the angiosperm radiation, we found a pattern similar to that of angiosperms. This pattern is consistent with the tropical niche conservatism hypothesis and suggests that both major groups of land plants have a broadly similar evolutionary trajectory, with most families originating in tropical conditions and few families adapting to cold and arid conditions. Main conclusions Our study shows that the phylogenetic structures of more recently evolved and diversified clades of pteridophytes are fairly consistent with the tropical niche conservatism hypothesis, suggesting that the age of the taxon, its physiological adaptations and the global climatic changes that it experienced during its evolutionary history are reflected in the composition of current plant assemblages.
Keywordferns lycopods phylogenetic diversity phylogenetic relatedness tropical niche conservatism SPECIES RICHNESS HISTORICAL BIOGEOGRAPHY PLANT RICHNESS FERNS DIVERSITY COMMUNITIES RADIATION ECOLOGY ENERGY SCALE
WOS IDWOS:000668435500001
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Document Type期刊论文
Affiliation1.Chinese Acad Sci, Kunming Inst Bot, CAS Key Lab Plant Divers & Biogeog East Asia, Kunming, Yunnan, Peoples R China
2.Illinois State Museum, Res & Collect Ctr, 1011 East Ash St, Springfield, IL 62703 USA
3.Univ Zurich, Dept Systemat Bot, Zurich, Switzerland
4.Guizhou Normal Univ, Key Lab State Forestry Adm Biodivers Conservat Ka, Guiyang, Peoples R China
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GB/T 7714
Qian,Hong,Kessler,Michael,Deng,Tao,et al. Patterns and drivers of phylogenetic structure of pteridophytes in China[J]. GLOBAL ECOLOGY AND BIOGEOGRAPHY,2021,30(9):1835-1846.
APA Qian,Hong,Kessler,Michael,Deng,Tao,&Jin,Yi.(2021).Patterns and drivers of phylogenetic structure of pteridophytes in China.GLOBAL ECOLOGY AND BIOGEOGRAPHY,30(9),1835-1846.
MLA Qian,Hong,et al."Patterns and drivers of phylogenetic structure of pteridophytes in China".GLOBAL ECOLOGY AND BIOGEOGRAPHY 30.9(2021):1835-1846.
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