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Zenodo
2026
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| Online Access: | https://doi.org/10.5281/zenodo.19225022 |
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| _version_ | 1866901088141049856 |
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| author | Motes, Jessie Osburn, Ernest Miniat, Chelcy Barrett, John Wurzburger, Nina |
| author_facet | Motes, Jessie Osburn, Ernest Miniat, Chelcy Barrett, John Wurzburger, Nina |
| 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> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_19225022 |
| institution | Zenodo |
| language | |
| publishDate | 2026 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Land-use disturbance changes the nitrogen cycle by altering trajectories of forest recovery Motes, Jessie Osburn, Ernest Miniat, Chelcy Barrett, John Wurzburger, Nina <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> |
| title | Land-use disturbance changes the nitrogen cycle by altering trajectories of forest recovery |
| url | https://doi.org/10.5281/zenodo.19225022 |