Publikation: Why are graminoid species more dominant? Trait‐mediated plant–soil feedbacks shape community composition
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Abstract Species traits may determine plant interactions along with soil microbiome, further shaping plant–soil feedbacks (PSFs). However, how plant traits modulate PSFs and, consequently, the dominance of plant functional groups remains unclear. We used a combination of field surveys and a two‐phase PSF experiment to investigate whether forbs and graminoids differed in PSFs and in their trait–PSF associations. When grown in forb‐conditioned soils, forbs experienced stronger negative feedbacks, while graminoids experienced positive feedbacks. Graminoid‐conditioned soil resulted in neutral PSFs for both functional types. Forbs with thin roots and small seeds showed more‐negative PSFs than those with thick roots and large seeds. Conversely, graminoids with acquisitive root and leaf traits (i.e., thin roots and thin leaves) demonstrated greater positive PSFs than graminoids with thick roots and tough leaves. By distinguishing overall and soil biota‐mediated PSFs, we found that the associations between plant traits and PSFs within both functional groups were mainly mediated by soil biota. A simulation model demonstrated that such differences in PSFs could lead to a dominance of graminoids over forbs in natural plant communities, which might explain why graminoids dominate in grasslands. Our study provides new insights into the differentiation and adaptation of plant life‐history strategies under selection pressures imposed by soil biota.
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HUANG, Kailing, Jonathan R. DE LONG, Xuebin YAN, Xiaoyi WANG, Chunlong WANG, Yiwei ZHANG, Mark VAN KLEUNEN, 2024. Why are graminoid species more dominant? Trait‐mediated plant–soil feedbacks shape community composition. In: Ecology. Wiley. 2024, 105(6), e4295. ISSN 0012-9658. eISSN 1939-9170. Verfügbar unter: doi: 10.1002/ecy.4295BibTex
@article{Huang2024-06grami-70008, year={2024}, doi={10.1002/ecy.4295}, title={Why are graminoid species more dominant? <scp>T</scp>rait‐mediated plant–soil feedbacks shape community composition}, number={6}, volume={105}, issn={0012-9658}, journal={Ecology}, author={Huang, Kailing and De Long, Jonathan R. and Yan, Xuebin and Wang, Xiaoyi and Wang, Chunlong and Zhang, Yiwei and van Kleunen, Mark}, note={Article Number: e4295} }
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