Latitudinal diversity gradients in bryophytes and woody plants: Roles of temperature and water availability |
| |
Authors: | Sheng‐Bin Chen J. W. Ferry Slik Jie Gao Ling‐Feng Mao Meng‐Jie Bi Meng‐Wei Shen Ke‐Xin Zhou |
| |
Affiliation: | 1. Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing, China;2. Institute for Biodiversity and Environmental Research (IBER), Universiti Brunei Darussalam, Gadong, Brunei Darussalam;3. Forestry College of Beijing Forestry University, Beijing, China;4. Department of Plant Biology, Michigan State University, East Lansing, Michigan, USA;5. College of Earth Science, Chengdu University of Technology, Chengdu, China;6. College of Tourism and Urban–Rural Planning, Chengdu University of Technology, Chengdu, China |
| |
Abstract: | It remains unclear whether the latitudinal diversity gradients of micro- and macro-organisms are driven by the same macro-environmental variables. We used the newly completed species catalog and distribution information of bryophytes in China to explore their spatial species richness patterns, and to investigate the underlying roles of energy availability, climatic seasonality, and environmental heterogeneity in shaping these patterns. We then compared these patterns to those found for woody plants. We found that, unlike woody plants, mosses and liverworts showed only weakly negative latitudinal trends in species richness. The spatial patterns of liverwort richness and moss richness were overwhelmingly explained by contemporary environmental variables, although explained variation was lower than that for woody plants. Similar to woody plants, energy and climatic seasonality hypotheses dominate as explanatory variables but show high redundancy in shaping the distribution of bryophytes. Water variables, that is, the annual availability, intra-annual variability and spatial heterogeneity in precipitation, played a predominant role in explaining spatial variation of species richness of bryophytes, especially for liverworts, whereas woody plant richness was affected most by temperature variables. We suggest that further research on spatial patterns of bryophytes should incorporate the knowledge on their ecophysiology and evolution. |
| |
Keywords: | biogeography environmental determinants latitudinal gradient of diversity liverworts micro‐organism diversity mosses |
|
| 点击此处可从《植物分类学报:英文版》浏览原始摘要信息 |
|
点击此处可从《植物分类学报:英文版》下载免费的PDF全文 |
|