Abstract
Global climate change has led to the decline of species and functional diversity in ecosystems, changing community composition and ecosystem functions. However, we still know little about how species with different resource-use strategies (different types of resource usage and plant growth of plants as indicated by the spectrum of plant economic traits, including acquisitive resource-use strategy and conservative resource-use strategy) would change in response to climate change, and how the changes in the diversity of species with different resource-use strategies may influence community-level productivity. Here, using long-term (1982–2017) observatory data in a temperate grassland in Inner Mongolia, we investigated how climate change had affected the species richness (SR) and functional richness (FRic) for the whole community and for species with different resource-use strategies. Specifically, based on data for four traits representing leaf economics spectrum (leaf carbon concentration, leaf nitrogen concentration, leaf phosphorus concentration, and specific leaf area), we divided 81 plant species appearing in the grassland community into three plant functional types representing resource-acquisitive, medium, and resource-conservative species. We then analyzed the changes in community-level productivity in response to the decline of SR and FRic at the community level and for different resource-use strategies. We found that community-level SR and FRic decreased with drying climate, which was largely driven by the decline of diversity for resource-acquisitive species. However, community-level productivity remained stable because resource-conservative species dominating this grassland were barely affected by climate change. Our study revealed distinctive responses of species with different resource-use strategies to climate change and provided a new approach based on species functional traits for predicting the magnitude and direction of climate change effects on ecosystem functions.
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This work was supported by the National Natural Science Foundation of China (32125026, 31988102), the National Key Research Development Program of China (2022YFF0802300), and the Strategic Priority Research Program of Chinese Academy of Sciences (XDB31000000).
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Compliance and ethics The authors declare no conflict of interest. Data sets utilized for this research are as follows: an integrated data base on China’s grassland species (https://doi.org/10.1002/ecy.1780), The China Plant Trait Database (https://doi.pangaea.de/10.1594/PANGAEA.871819). All the trait data and diversity data utilized for this research are provided as private-for-peer review via the following link: https://datadryad.org/stash/share/32i7GHu1RiAIMzET3U-G6PzXM1RxOSYZNsjmFrWdN5k. Upon acceptance, data will be provided via Dryad with the above link.
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Jing, H., Xiong, X., Jiang, F. et al. Climate change filtered out resource-acquisitive plants in a temperate grassland in Inner Mongolia, China. Sci. China Life Sci. 67, 403–413 (2024). https://doi.org/10.1007/s11427-022-2338-1
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DOI: https://doi.org/10.1007/s11427-022-2338-1