Climate Change Impact on Tree Architectural Development and Leaf Area

Vennetier, M.; Girard, François; Taugourdeau, Olivier; Cailleret, Maxime; Caraglio, Yves; Sabatier, Sylvie-Annabel; Ouarmim, Samira; Didier, C.; Thabeet, Ali

doi:10.5772/51510

Cited by 17 publications

(20 citation statements)

References 51 publications

(55 reference statements)

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“…; Vennetier et al . ). The observed delayed phenological development of approximately 28 days in 2013 under reduced precipitation is also consistent with previous studies on Mediterranean tree species subjected to natural or experimental drought stress (Ogaya & Peñuelas ; Peñuelas et al .…”

Section: Discussionmentioning

confidence: 97%

“…Indeed, needle thickness is mainly dependent on twig diameter and health (Vennetier et al . ) and thus might not be a reliable indicator of tree responses to drought.…”

Section: Discussionmentioning

confidence: 99%

“…As previous studies suggested, some morphological adaptations such as needle length or leaf area are permanent once needle development is complete (e.g. Sprugel, Brooks & Hinckley 1996;Vennetier et al 2013). For instance, a study on Pinus sp.…”

Section: O R P H O L O G I C a L T R A I T Smentioning

confidence: 99%

“…) and may even exhibit greater changes than tree ring widths in conifer species (Vennetier et al . ).…”

Section: Introductionmentioning

confidence: 97%

“…Indeed, morphological traits such as needle structure can also influence responses to water stress (Jaindl, Eddleman & Doescher 1995) as they impact gas exchange and drought resistance through indirect effects on light absorption and control of water loss (Abrams, Kubiske & Mostoller 1994;Niinemets 2001;Woodruff et al 2009). In combination with needle morphological traits, reduction in shoot elongation is also a reliable indicator of tree response to drought (Girard et al 2011) and may even exhibit greater changes than tree ring widths in conifer species (Vennetier et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Precipitation, not air temperature, drives functional responses of trees in semi‐arid ecosystems

et al. 2016

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Summary1. Model scenarios of climate change predict that warming and drought will occur simultaneously in the future in many regions. The capacity of woody species to modify their physiology and morphology in response to environmental conditions is widely recognized, but little is known about the responses of trees to reduced precipitation and increased temperature acting simultaneously. 2. In a semi-arid woodland, we assessed the responses in physiological (needle emergence, maximum photosynthesis, stomatal conductance, water use efficiency (WUE) and shoot elongation) and morphological (needle length and thickness, and leaf mass per area (LMA)) foliar traits of piñon pine (Pinus edulis) in response to three years of a 45% reduction in precipitation, a 4.8°C increase in air temperature and their simultaneous effects. 3. A strong change in physiological and morphological traits in response to reduced precipitation was observed. Precipitation reduction delayed needle emergence, decreased photosynthesis and stomatal conductance, increased WUE, decreased shoot elongation and induced shorter needles with a higher LMA. Trees subjected to simultaneous reductions in precipitation and warming demonstrated a similar response. However, atmospheric warming did not induce a response in any of the measured traits. 4. Physiological and morphological traits of trees in this semi-arid climate were more responsive to changes in soil moisture than air temperature. Long-term exposure to seasonal drought stress in arid sites may have resulted in strong plastic responses to this first stressor. However, atmospheric warming probably was not experienced as a stress for trees in this warm and dry climate. Overall, our results indicate that in semi-arid ecosystems where tree functioning is already highly limited by soil water availability, atmospheric warming as anticipated with climate change may have less impact on foliar trait responses than previously thought.

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Section: Discussionmentioning

confidence: 97%

“…Indeed, needle thickness is mainly dependent on twig diameter and health (Vennetier et al . ) and thus might not be a reliable indicator of tree responses to drought.…”

Section: Discussionmentioning

confidence: 99%

Section: O R P H O L O G I C a L T R A I T Smentioning

confidence: 99%

“…) and may even exhibit greater changes than tree ring widths in conifer species (Vennetier et al . ).…”

Section: Introductionmentioning

confidence: 97%