生態学と進化学の研究により、植物と土壌の相互作用に降水が影響を与えることが明らかになった Nature Ecology and Evolution Study Reveals Precipitation’s Effect on Plant-Soil Interaction
2022-03-28 ヒューストン大学
・生態学と進化学の研究チームは、降水量が植物と土壌の相互作用に与える影響について調査した。
・この研究結果は、生態学者や農業指導者が、異なる気候条件下で将来の植物環境がどのように変化するかを予測するのに役立ち、特に、気候の変化がテキサスの草原にどのような影響を与える可能性があるのかを明らかにするものである。
＜関連情報＞
- https://uh.edu/news-events/stories/2022-news-articles/march-2022/03282022-uh-greenhouse-biodiversity-coastal-plant-climate-soil.php
- https://www.nature.com/articles/s41559-022-01700-7
降水パターンの変化は、植物-土壌のフィードバックの変化を通じて、植物種の共存を不安定にする可能性がある Changes in precipitation patterns can destabilize plant species coexistence via changes in plant–soil feedback
Jan-Hendrik Dudenhöffer,Noah C. Luecke &Kerri M. Crawford
Published: 28 March 2022
Abstract
Climate change can alter species coexistence through changes in biotic interactions. By describing reciprocal interactions between plants and soil microbes, plant–soil feedback (PSF) has emerged as a powerful framework for predicting plant species coexistence and community dynamics, but little is known about how PSF will respond to changing climate conditions. Hence, the context dependency of PSF has recently gained attention. Water availability is a major driver of all biotic interactions, and it is expected that precipitation patterns will change with ongoing climate change. We tested how soil water content affects PSF by conducting a full factorial pairwise PSF experiment using eight plant species common to southeastern United States coastal prairies under three watering treatments. We found coexistence-stabilizing negative PSF at drier-than-average conditions shifted to coexistence-destabilizing positive PSF under wetter-than-average conditions. A simulation model parameterized with the experimental results supports the prediction that more positive PSF accelerates the erosion of diversity within communities while decreasing the predictability in plant community composition. Our results underline the importance of considering environmental context dependency of PSF in light of a rapidly changing climate.
