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| Main Authors: | , , , , |
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| Format: | Recurso digital |
| Language: | |
| Published: |
Zenodo
2026
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| Online Access: | https://doi.org/10.5281/zenodo.19225022 |
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Table of Contents:
- <p>Land-use disturbance alters nitrogen (N) cycling in ecosystems, but the mechanisms driving long-term changes remain unclear. We examined how historical disturbance shapes long-term N cycling in a temperate forest across a hillslope gradient. We found that increasing disturbance intensity promoted symbiotic N fixation (SNF) during early succession, which facilitated later dominance by arbuscular mycorrhizal (AM) trees. This shift indirectly enhanced N transformation rates, mineralization, nitrification, and denitrification, increased ammonium and nitrate pool sizes, and elevated microbial gene abundances (e.g., amoA, <em>nirK, nirS, nosZ</em>) by raising soil pH. Our findings suggest that N-fixing trees can generate biogeochemical priority effects that shape recovery trajectories for decades, providing a mechanism through which land-use disturbance exerts long-term influence on ecosystem processes.</p>