Search results for: Margaux Didion‐Gency

Items from 1 to 7 out of 7 results

article

High heat tolerance, evaporative cooling, and stomatal decoupling regulate canopy temperature and their safety margins in three European oak species

Alice Gauthey, Ansgar Kahmen, Jean‐Marc Limousin, Alberto Vilagrosa, more

Global Change Biology > 30 > 8 > n/a - n/a

Heatwaves and soil droughts are increasing in frequency and intensity, leading many tree species to exceed their thermal thresholds, and driving wide‐scale forest mortality. Therefore, investigating heat tolerance and canopy temperature regulation mechanisms is essential to understanding and predicting tree vulnerability to hot droughts. We measured the diurnal and seasonal variation in leaf water...

article

Interactions between beech and oak seedlings can modify the effects of hotter droughts and the onset of hydraulic failure

Eugénie Mas, Hervé Cochard, Janisse Deluigi, Margaux Didion‐Gency, more

New Phytologist > 241 > 3 > 1021 - 1034

Mixing species with contrasting resource use strategies could reduce forest vulnerability to extreme events. Yet, how species diversity affects seedling hydraulic responses to heat and drought, including mortality risk, is largely unknown. Using open‐top chambers, we assessed how, over several years, species interactions (monocultures vs mixtures) modulate heat and drought impacts on the hydraulic...

article

Absence of canopy temperature variation despite stomatal adjustment in Pinus sylvestris under multidecadal soil moisture manipulation

Alice Gauthey, Christoph Bachofen, Janisse Deluigi, Margaux Didion‐Gency, more

New Phytologist > 240 > 1 > 127 - 137

Global warming and droughts push forests closer to their thermal limits, altering tree carbon uptake and growth. To prevent critical overheating, trees can adjust their thermotolerance (T_crit), temperature and photosynthetic optima (T_opt and A_opt), and canopy temperature (T_can) to stay below damaging thresholds. However, we lack an understanding of how soil droughts affect photosynthetic thermal...

article

Impact of warmer and drier conditions on tree photosynthetic properties and the role of species interactions

Margaux Didion‐Gency, Arthur Gessler, Nina Buchmann, Jonas Gisler, more

New Phytologist > 236 > 2 > 547 - 560

Increased temperature and prolonged soil moisture reduction have distinct impacts on tree photosynthetic properties. Yet, our knowledge of their combined effect is limited. Moreover, how species interactions alter photosynthetic responses to warming and drought remains unclear. Using mesocosms, we studied how photosynthetic properties of European beech and downy oak were impacted by multi‐year...

article

Warming may extend tree growing seasons and compensate for reduced carbon uptake during dry periods

Charlotte Grossiord, Christoph Bachofen, Jonas Gisler, Eugénie Mas, more

Journal of Ecology > 110 > 7 > 1575 - 1589

Warming and drought alter plant phenology, photosynthesis and growth with important consequences for the global carbon cycle and the earth's climate. Yet, few studies have attempted to tease apart their effects on tree phenology, particularly leaf senescence, and on source and sink activity. We experimentally assessed the single and combined effects of warming and reduced soil moisture on the...

article

Both diversity and functional composition affect productivity and water use efficiency in experimental temperate grasslands

Manuel Walde, Eric Allan, Seraina L. Cappelli, Margaux Didion‐Gency, more

Journal of Ecology > 109 > 11 > 3877 - 3891

Many experiments have shown that biodiversity promotes ecosystem functioning and stability and that this relationship varies with resource availability. However, we still have a poor understanding of the underlying physiological and ecological mechanisms driving diversity effects and how they may interact with soil nutrient availability. We collected data in a grassland experiment factorially...

article

Interactive effects of tree species mixture and climate on foliar and woody trait variation in a widely distributed deciduous tree

Margaux Didion‐Gency, Christoph Bachofen, Nina Buchmann, Arthur Gessler, more

Functional Ecology > 35 > 11 > 2397 - 2408

Despite increasing reports of severe drought and heat impacts on forest ecosystems, community‐level processes, which could potentially modulate tree responses to climatic stress, are rarely accounted for. While numerous studies indicate a positive effect of species diversity on a wide range of ecosystem functions and services, little is known about how species interactions influence tree responses...

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Search results for: Margaux Didion‐Gency

High heat tolerance, evaporative cooling, and stomatal decoupling regulate canopy temperature and their safety margins in three European oak species

Interactions between beech and oak seedlings can modify the effects of hotter droughts and the onset of hydraulic failure

Absence of canopy temperature variation despite stomatal adjustment in Pinus sylvestris under multidecadal soil moisture manipulation

Impact of warmer and drier conditions on tree photosynthetic properties and the role of species interactions

Warming may extend tree growing seasons and compensate for reduced carbon uptake during dry periods

Both diversity and functional composition affect productivity and water use efficiency in experimental temperate grasslands

Interactive effects of tree species mixture and climate on foliar and woody trait variation in a widely distributed deciduous tree

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INFONA - science communication portal

Search results for: Margaux Didion‐Gency

High heat tolerance, evaporative cooling, and stomatal decoupling regulate canopy temperature and their safety margins in three European oak species

Interactions between beech and oak seedlings can modify the effects of hotter droughts and the onset of hydraulic failure

Absence of canopy temperature variation despite stomatal adjustment in Pinus sylvestris under multidecadal soil moisture manipulation

Impact of warmer and drier conditions on tree photosynthetic properties and the role of species interactions

Warming may extend tree growing seasons and compensate for reduced carbon uptake during dry periods

Both diversity and functional composition affect productivity and water use efficiency in experimental temperate grasslands

Interactive effects of tree species mixture and climate on foliar and woody trait variation in a widely distributed deciduous tree

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