Detecting the richness and dissimilarity patterns of Theaceae species in southern China

Zhang, Minggang; Huang, Chen‐Yu; Rao, M. Babu; Chen, Jianwen; Wang, Yu-Zhuo; Mi, Xiangcheng

doi:10.1016/j.chnaes.2016.06.010

Cited by 3 publications

(3 citation statements)

References 25 publications

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“…The diversity distribution pattern of low-level plant taxa is more suitable for the habitat heterogeneity hypothesis (Shmida and Wilson, 1985). The results showed that the climatic temporal heterogeneity (annual temperature difference) in the study area played an important role in the distribution of Theaceae plants in southern China that indirectly supports the conclusions of this paper (Zhang et al, 2016). The three hotspot regions with abundant plant diversity (Hengduan range, C. China and Lingnan region) identified by Ying are all areas displaying high habitat heterogeneity with complex topography and diverse climate (Ying, 2001).…”

Section: Discussionsupporting

confidence: 80%

Correlations and dominant climatic factors among diversity patterns of plant families, genera, and species

Bao

et al. 2022

Front. Ecol. Evol.

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At present, the relationship between the diversity distribution patterns of different taxonomic levels of plants and climatic factors is still unclear. This paper explored the diversity pattern of vascular plant families, genera, and species in China at the municipal scale. It also studied the effects of accumulated temperature ≥ 10°C, annual precipitation, and hydrothermal base which reflect the effect of hydrothermal resources on the plant diversity pattern. The results showed that: There were extremely significant correlations among the diversities of plant families, genera, and species, and the interpretation degree of diversity between adjacent the taxonomic levels was more than 90%. The diversity pattern of plant families was mainly affected by dominant climatic state indicators such as the maximum value of accumulated temperature, annual precipitation, and hydrothermal base, and the gradient range of the hydrothermal base, which showed a clear latitudinal gradient law. The diversity pattern of plant species was found to be mainly dependent on the climatic heterogeneity indicators, being closely related to the heterogeneity indicators and sum indicators of the hydrothermal base. It was also affected by the range of precipitation gradient range. Plant genus and its diversity pattern are not only significantly affected by heterogeneity and sum indicators but also closely related to climate state indicators. In comparison with the humidity index in vegetation ecological studies, the related indicators of the hydrothermal base proposed in this paper excelled at revealing the relationship between climate and diversity patterns of plant families, genera, and species, and could effectively solve the species-area relationship issue in arid and low-temperature areas. The results of this paper have presented important theoretical and practical values for comprehensively understanding the correlation between climate and diversity of plant families, genera, and species, clarifying the impact of climate difference and climate change on plant diversity.

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Section: Discussionsupporting

confidence: 80%

Correlations and dominant climatic factors among diversity patterns of plant families, genera, and species

Bao

et al. 2022

Front. Ecol. Evol.

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“…The climate type of this area is mainly subtropical monsoon humid climate, and the vegetation type is mainly subtropical evergreen broad‐leaved forest, Theaceae is one of the typical representative plant group. Contemporary optimal distribution areas of Polyspora based on MaxEnt–ArcGIS were basically consistent with the regions with the highest species richness of Theaceae (Zhang et al, 2016 ). The main environmental factors affecting the distribution of Polyspora species were bioclimatic factors.…”

Section: Discussionsupporting

confidence: 63%

Impacts of climate change on species distribution patterns of Polyspora sweet in China

Fan

Zhou

Chang-le

et al. 2022

Ecology and Evolution

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Climate change is an important driver of species distribution and biodiversity. Understanding the response of plants to climate change is helpful to understand species differentiation and formulate conservation strategies. The genus Polyspora (Theaceae) has an ancient origin and is widely distributed in subtropical evergreen broad‐leaved forests. Studies on the impacts of climate change on species geographical distribution of Chinese Polyspora can provide an important reference for exploring the responses of plant groups in subtropical evergreen broad‐leaved forests with geological events and climate change in China. Based on the environmental variables, distribution records, and chloroplast genomes, we modeled the potential distribution of Chinese Polyspora in the Last Glacial Maximum, middle Holocene, current, and future by using MaxEnt‐ArcGIS model and molecular phylogenetic method. The changes in the species distribution area, centroid shift, and ecological niche in each periods were analyzed to speculate the response modes of Chinese Polyspora to climate change in different periods. The most important environmental factor affecting the distribution of Polyspora was the precipitation of the driest month, ranging from 13 to 25 mm for the highly suitable habitats. At present, highly suitable distribution areas of Polyspora were mainly located in the south of 25°N, and had species‐specificity. The main glacial refugia of the Chinese Polyspora might be located in the Ailao, Gaoligong, and Dawei Mountains of Yunnan Province. Jinping County, Pingbian County, and the Maguan County at the border of China and Vietnam might be the species differentiation center of the Chinese Polyspora . Moderate climate warming in the future would be beneficial to the survival of P. axillaris , P. chrysandra , and P. speciosa . However, climate warming under different shared socio‐economic pathways would reduce the suitable habitats of P. hainanensis and P. longicarpa .

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“…In this study, we determined that the greatest Theaceae species richness occurs in southeastern China and on Hainan Island, which is consistent with the distribution of subtropical evergreen broad‐leaved forest in China. In particular, regions containing the highest species richness occur in Fujian and Guangxi provinces, as suggested by Zhang et al (2016).…”

Section: Discussionmentioning

confidence: 66%

Climate change‐induced migration patterns and extinction risks of Theaceae species in China

Zhang

Meng

Wang

et al. 2020

Ecology and Evolution

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Theaceae, an economically important angiosperm family, is widely distributed in tropical and subtropical forests in Asia. In China, Theaceae has particularly high abundances and endemism, comprising ~75% of the total genera and ~46% of the total species worldwide. Therefore, predicting the response of Theaceae species to climate change is vital. In this study, we collected distribution data for 200 wild Theaceae species in China, and predicted their distribution patterns under current and future climactic conditions by species distribution modeling (SDM). We revealed that Theaceae species richness is highest in southeastern China and on Hainan Island, reaching its highest value (137 species) in Fujian Province. According to the IUCN Red List criteria for assessing species threat levels under two dispersal assumptions (no dispersal and full dispersal), we evaluated the conservation status of all Theaceae species by calculating loss of suitable habitat under future climate scenarios. We predicted that nine additional species will become threatened due to climate change in the future; one species will be classified as critically endangered (CR), two as endangered (EN), and six as vulnerable (VU). Given their extinction risks associated with climate change, we recommended that these species be added to the Red List. Our investigation of migration patterns revealed regional differences in the number of emigrant, immigrant, and persistent species, indicating the need for targeted conservation strategies. Regions containing numerous emigrants are concentrated in Northern Taiwan and coastal regions of Zhejiang and Fujian provinces, while regions containing numerous immigrants include central Sichuan Province, the southeastern Tibet Autonomous Region, southwest Yunnan Province, northwest Sichuan Province, and the junction of Guangxi and Hunan provinces. Lastly, regions containing persistent species are widely distributed in southern China. Importantly, regions with high species turnover are located on the northern border of the entire Theaceae species distribution ranges owing to upwards migration; these regions are considered most sensitive to climate change and conservation planning should therefore be prioritized here. This study will contribute valuable information for reducing the negative impacts of climate change on Theaceae species, which will ultimately improve biodiversity conservation efficiency.

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Detecting the richness and dissimilarity patterns of Theaceae species in southern China

Cited by 3 publications

References 25 publications

Correlations and dominant climatic factors among diversity patterns of plant families, genera, and species

Correlations and dominant climatic factors among diversity patterns of plant families, genera, and species

Impacts of climate change on species distribution patterns of Polyspora sweet in China

Climate change‐induced migration patterns and extinction risks of Theaceae species in China

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