BiondiRossi2015

Référence

Biondi, F., Rossi, S. (2015) Plant-water relationships in the Great Basin Desert of North America derived from Pinus monophylla hourly dendrometer records. International Journal of Biometeorology, 59(8):939-953. (Scopus )

Résumé

Water is the main limiting resource for natural and human systems, but the effect of hydroclimatic variability on woody species in water-limited environments at sub-monthly time scales is not fully understood. Plant-water relationships of single-leaf pinyon pine (Pinus monophylla) were investigated using hourly dendrometer and environmental data from May 2006 to October 2011 in the Great Basin Desert, one of the driest regions of North America. Average radial stem increments showed an annual range of variation below 1.0 mm, with a monotonic steep increase from May to July that yielded a stem enlargement of about 0.5 mm. Stem shrinkage up to 0.2 mm occurred in late summer, followed by an abrupt expansion of up to 0.5 mm in the fall, at the arrival of the new water year precipitation. Subsequent winter shrinkage and enlargement were less than 0.3 mm each. Based on 4 years with continuous data, diel cycles varied in both timing and amplitude between months and years. Phase shifts in circadian stem changes were observed between the growing season and the dormant one, with stem size being linked to precipitation more than to other water-related indices, such as relative humidity or soil moisture. During May–October, the amplitude of the phases of stem contraction, expansion, and increment was positively related to their duration in a nonlinear fashion. Changes in precipitation regime, which affected the diel phases especially when lasting more than 5–6 h, could substantially influence the dynamics of water depletion and replenishment in single-leaf pinyon pine. © 2014, ISB.

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@ARTICLE { BiondiRossi2015,
    AUTHOR = { Biondi, F. and Rossi, S. },
    TITLE = { Plant-water relationships in the Great Basin Desert of North America derived from Pinus monophylla hourly dendrometer records },
    JOURNAL = { International Journal of Biometeorology },
    YEAR = { 2015 },
    VOLUME = { 59 },
    NUMBER = { 8 },
    PAGES = { 939-953 },
    NOTE = { cited By 3 },
    ABSTRACT = { Water is the main limiting resource for natural and human systems, but the effect of hydroclimatic variability on woody species in water-limited environments at sub-monthly time scales is not fully understood. Plant-water relationships of single-leaf pinyon pine (Pinus monophylla) were investigated using hourly dendrometer and environmental data from May 2006 to October 2011 in the Great Basin Desert, one of the driest regions of North America. Average radial stem increments showed an annual range of variation below 1.0 mm, with a monotonic steep increase from May to July that yielded a stem enlargement of about 0.5 mm. Stem shrinkage up to 0.2 mm occurred in late summer, followed by an abrupt expansion of up to 0.5 mm in the fall, at the arrival of the new water year precipitation. Subsequent winter shrinkage and enlargement were less than 0.3 mm each. Based on 4 years with continuous data, diel cycles varied in both timing and amplitude between months and years. Phase shifts in circadian stem changes were observed between the growing season and the dormant one, with stem size being linked to precipitation more than to other water-related indices, such as relative humidity or soil moisture. During May–October, the amplitude of the phases of stem contraction, expansion, and increment was positively related to their duration in a nonlinear fashion. Changes in precipitation regime, which affected the diel phases especially when lasting more than 5–6 h, could substantially influence the dynamics of water depletion and replenishment in single-leaf pinyon pine. © 2014, ISB. },
    AUTHOR_KEYWORDS = { Arid environments; Automated sensors; Diel cycles; Great Basin National Park; Hydroclimate; Nevada; Plant-water relationships; Point dendrometers; Tree radius variation; Tree rings },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1007/s00484-014-0907-4 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-84937969996&doi=10.1007%2fs00484-014-0907-4&partnerID=40&md5=c71135af2c8c02f2d40893f96600b441 },
}

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