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Decoupled responses of above‐ and below‐ground beta‐diversity to nitrogen enrichment in a typical steppe.
- Source :
-
Ecology Letters . Jan2024, Vol. 27 Issue 1, p1-11. 11p. - Publication Year :
- 2024
-
Abstract
- Increased atmospheric nitrogen (N) deposition affects biodiversity in terrestrial ecosystems. However, we do not know whether the effects of N on above‐ground plant β‐diversity are coupled with changes occurring in the soil seed bank. We conducted a long‐term N‐addition experiment in a typical steppe and found that above‐ground β‐diversity increased and then decreased with increasing N addition, whereas below‐ground β‐diversity decreased linearly. This suggests decoupled dynamics of plant communities and their soil seed bank under N enrichment. Species substitution determined above‐ and below‐ground β‐diversity change via an increasing role of deterministic processes with N addition. These effects were mostly driven by differential responses of the above‐ground vegetation and the soil seed bank β‐diversities to N‐induced changes in environmental heterogeneity, increased soil inorganic N concentrations and soil acidification. Our findings highlight the importance of considering above‐ and below‐ground processes simultaneously for effectively conserving grassland ecosystems under N enrichment. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1461023X
- Volume :
- 27
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- Ecology Letters
- Publication Type :
- Academic Journal
- Accession number :
- 175139995
- Full Text :
- https://doi.org/10.1111/ele.14339