Stem radial growth and water storage responses to heat and drought vary between conifers with differing hydraulic strategies

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Título: Stem radial growth and water storage responses to heat and drought vary between conifers with differing hydraulic strategies
Autor/es: Manrique-Alba, Àngela | Sevanto, Sanna | Adams, Henry D. | Collins, Adam D. | Dickman, Lee T. | Chirino Miranda, Esteban | Bellot Abad, Juan Francisco | McDowell, Nate G.
Grupo/s de investigación o GITE: Gestión de Ecosistemas y de la Biodiversidad (GEB)
Centro, Departamento o Servicio: Universidad de Alicante. Departamento de Ecología | Universidad de Alicante. Instituto Multidisciplinar para el Estudio del Medio "Ramón Margalef"
Palabras clave: Growth | Increased temperature | Juniperus monosperma | LVDT | Pinus edulis | Water potential
Área/s de conocimiento: Ecología
Fecha de publicación: ago-2018
Editor: John Wiley & Sons
Cita bibliográfica: Plant, Cell & Environment. 2018, 41(8): 1926-1934. doi:10.1111/pce.13340
Resumen: We investigated stem radial growth and water storage dynamics of 2 conifer species differing in hydraulic carbon strategies, Juniperus monosperma and Pinus edulis, under conditions of ambient, drought (∼45% reduction in precipitation), heat (∼4.8 °C temperature increase), and the combination of drought + heat, in 2013 and 2014. Juniper maintained low growth across all treatments. Overall, the relatively isohydric piñon pine showed significantly greater growth and water storage recharge than the relatively anisohydric juniper across all treatments in the average climate year (2014) but no differences in the regionally dry year (2013). Piñon pine ceased growth at a constant predawn water potential across all treatments and at a less negative water potential threshold than juniper. Heat has a greater negative impact on piñon pines' growth and water storage than drought, whereas juniper was, in contrast, unaffected by heat but strongly impacted by drought. The whole‐plant hydraulic carbon strategies, in this case captured using the isohydric/anisohydric concept, translate into alternative growth and water storage strategies under drought and heat conditions.
Patrocinador/es: This study was supported by DOE—Office of Biological and Environmental Research and the Spanish Ministry of Economy and Competitiveness (MINECO) via competitive grant CGL2015‐69773‐C2‐1‐P. N.G.M. was additionally supported by Pacific Northwest National Laboratories LDRD program. This research is part of the doctoral thesis of A.M.‐A. at the University of Alicante, supported by an FPI scholarship.
URI: http://hdl.handle.net/10045/77393
ISSN: 0140-7791 (Print) | 1365-3040 (Online)
DOI: 10.1111/pce.13340
Idioma: eng
Tipo: info:eu-repo/semantics/article
Derechos: © 2018 John Wiley & Sons Ltd
Revisión científica: si
Versión del editor: https://doi.org/10.1111/pce.13340
Aparece en las colecciones:INV - GEB - Artículos de Revistas

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