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dc.creatorFan, Ying-
dc.creatorMiguez Macho, Gonzalo-
dc.creatorJobbagy Gampel, Esteban Gabriel-
dc.creatorJackson, Robert B.-
dc.creatorOtero Casal, Carlos-
dc.date2018-12-06T15:06:31Z-
dc.date2018-12-06T15:06:31Z-
dc.date2017-10-03-
dc.date2018-10-23T17:40:51Z-
dc.date.accessioned2019-04-29T15:51:34Z-
dc.date.available2019-04-29T15:51:34Z-
dc.date.issued2017-10-03-
dc.identifierFan, Ying; Miguez Macho, Gonzalo; Jobbagy Gampel, Esteban Gabriel; Jackson, Robert B.; Otero Casal, Carlos; Hydrologic regulation of plant rooting depth; National Academy of Sciences; Proceedings of the National Academy of Sciences of The United States of America; 114; 40; 3-10-2017; 10572-10577-
dc.identifier0027-8424-
dc.identifierhttp://hdl.handle.net/11336/65973-
dc.identifierCONICET Digital-
dc.identifierCONICET-
dc.identifier.urihttp://rodna.bn.gov.ar:8080/jspui/handle/bnmm/303922-
dc.descriptionPlant rooting depth affects ecosystem resilience to environmental stress such as drought. Deep roots connect deep soil/groundwater to the atmosphere, thus influencing the hydrologic cycle and climate. Deep roots enhance bedrock weathering, thus regulating the long-term carbon cycle. However, we know little about how deep roots go and why. Here, we present a global synthesis of 2,200 root observations of >1,000 species along biotic (life form, genus) and abiotic (precipitation, soil, drainage) gradients. Results reveal strong sensitivities of rooting depth to local soil water profiles determined by precipitation infiltration depth from the top (reflecting climate and soil), and groundwater table depth from below (reflecting topography-driven land drainage). In well-drained uplands, rooting depth follows infiltration depth; in waterlogged lowlands, roots stay shallow, avoiding oxygen stress below the water table; in between, high productivity and drought can send roots many meters down to the groundwater capillary fringe. This framework explains the contrasting rooting depths observed under the same climate for the same species but at distinct topographic positions. We assess the global significance of these hydrologic mechanisms by estimating root water-uptake depths using an inverse model, based on observed productivity and atmosphere, at 30″ (∼1-km) global grids to capture the topography critical to soil hydrology. The resulting patterns of plant rooting depth bear a strong topographic and hydrologic signature at landscape to global scales. They underscore a fundamental plant–water feedback pathway that may be critical to understanding plant-mediated global change.-
dc.descriptionFil: Fan, Ying. Rutgers University; Estados Unidos-
dc.descriptionFil: Miguez Macho, Gonzalo. Universidad de Santiago de Compostela; España-
dc.descriptionFil: Jobbagy Gampel, Esteban Gabriel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Matemática Aplicada de San Luis ; Argentina-
dc.descriptionFil: Jackson, Robert B.. University of Stanford; Estados Unidos-
dc.descriptionFil: Otero Casal, Carlos. Universidad de Santiago de Compostela; España-
dc.formatapplication/pdf-
dc.formatapplication/pdf-
dc.languageeng-
dc.publisherNational Academy of Sciences-
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/https://dx.doi.org/10.1073/pnas.1712381114-
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://www.pnas.org/content/114/40/10572-
dc.rightsinfo:eu-repo/semantics/restrictedAccess-
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/-
dc.sourcereponame:CONICET Digital (CONICET)-
dc.sourceinstname:Consejo Nacional de Investigaciones Científicas y Técnicas-
dc.sourceinstacron:CONICET-
dc.subjectGLOBAL CHANGE BIOLOGY-
dc.subjectINFILTRATION DEPTH-
dc.subjectPLANT ROOTING DEPTH-
dc.subjectSOIL HYDROLOGY-
dc.subjectWATER TABLE DEPTH-
dc.subjectOceanografía, Hidrología, Recursos Hídricos-
dc.subjectCiencias de la Tierra y relacionadas con el Medio Ambiente-
dc.subjectCIENCIAS NATURALES Y EXACTAS-
dc.subjectCiencias Medioambientales-
dc.subjectCiencias de la Tierra y relacionadas con el Medio Ambiente-
dc.subjectCIENCIAS NATURALES Y EXACTAS-
dc.titleHydrologic regulation of plant rooting depth-
dc.typeinfo:eu-repo/semantics/article-
dc.typeinfo:eu-repo/semantics/publishedVersion-
dc.typeinfo:ar-repo/semantics/articulo-
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