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dc.contributor | Facultad de Ciencias Biologicas y Ambientales | es_ES |
dc.contributor.author | Querejeta Mercader, José Ignacio | |
dc.contributor.author | Prieto Aguilar, Iván | |
dc.contributor.author | Armas, Cristina | |
dc.contributor.author | Casanoves, Fernando | |
dc.contributor.author | Diémé, Joseph S. | |
dc.contributor.author | Diouf, Mayecor | |
dc.contributor.author | Yossi, Harouna | |
dc.contributor.author | Kaya, Bocary | |
dc.contributor.author | Pugnaire, Francisco I. | |
dc.contributor.author | Rusch, Graciela M. | |
dc.contributor.other | Ecologia | es_ES |
dc.date | 2022 | |
dc.date.accessioned | 2022-10-18T09:26:02Z | |
dc.date.available | 2022-10-18T09:26:02Z | |
dc.identifier.citation | Querejeta, J. I., Prieto, I., Armas, C., Casanoves, F., Diémé, J. S., Diouf, M., Yossi, H., Kaya, B., Pugnaire, F. I., & Rusch, G. M. (2022). Higher leaf nitrogen content is linked to tighter stomatal regulation of transpiration and more efficient water use across dryland trees. New Phytologist, 235(4), 1351-1364. https://doi.org/10.1111/NPH.18254 | es_ES |
dc.identifier.issn | 0028-646X | |
dc.identifier.uri | http://hdl.handle.net/10612/15203 | |
dc.description.abstract | [EN] The least-cost economic theory of photosynthesis shows that water and nitrogen are mutually substitutable resources to achieve a given carbon gain. However, vegetation in the Sahel has to cope with the dual challenge imposed by drought and nutrient-poor soils. We addressed how variation in leaf nitrogen per area (Narea) modulates leaf oxygen and carbon isotopic composition (δ18O, δ13C), as proxies of stomatal conductance and water-use efficiency, across 34 Sahelian woody species. Dryland species exhibited diverging leaf δ18O and δ13C values, indicating large interspecific variation in time-integrated stomatal conductance and water-use efficiency. Structural equation modeling revealed that leaf Narea is a pivotal trait linked to multiple water-use traits. Leaf Narea was positively linked to both δ18O and δ13C, suggesting higher carboxylation capacity and tighter stomatal regulation of transpiration in N-rich species, which allows them to achieve higher water-use efficiency and more conservative water use. These adaptations represent a key physiological advantage of N-rich species, such as legumes, that could contribute to their dominance across many dryland regions. This is the first report of a robust mechanistic link between leaf Narea and δ18O in dryland vegetation that is consistent with core principles of plant physiology | es_ES |
dc.language | eng | es_ES |
dc.publisher | Wiley-Blackwell | es_ES |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | Ecología. Medio ambiente | es_ES |
dc.subject.other | Arid ecosystems | es_ES |
dc.subject.other | ci/ca ratio | es_ES |
dc.subject.other | leafδ13C | es_ES |
dc.subject.other | eafδ18O | es_ES |
dc.subject.other | Plant isotopic composition | es_ES |
dc.subject.other | Plant water-use strategies | es_ES |
dc.subject.other | Sahel | es_ES |
dc.subject.other | Stomatal conductance | es_ES |
dc.title | Higher leaf nitrogen content is linked to tighter stomatal regulation of transpiration and more efficient water use across dryland trees | es_ES |
dc.type | info:eu-repo/semantics/article | es_ES |
dc.identifier.doi | 10.1111/nph.18254 | |
dc.description.peerreviewed | SI | es_ES |
dc.relation.projectID | info: eu-repo/grantAgreemen/AEI/Programa Estatal de Generación de Conocimiento y Fortalecimiento Científico y Tecnológico del Sistema de I+D+i/ES/PID2019-107382RB-I00/DIVERSIDAD FUNCIONAL DE ESTRATEGIAS DE USO DE AGUA Y NUTRIENTES POR LAS PLANTAS EN ECOSISTEMAS MEDITERRANEOS Y SECOS | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es_ES |
dc.identifier.essn | 1469-8137 | |
dc.journal.title | New Phytologist | es_ES |
dc.volume.number | 235 | es_ES |
dc.issue.number | 4 | es_ES |
dc.page.initial | 1351 | es_ES |
dc.page.final | 1364 | es_ES |
dc.type.hasVersion | info:eu-repo/semantics/publishedVersion | es_ES |
dc.subject.unesco | 2417.13 Ecología Vegetal | es_ES |
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