Arsène Druel

Comment on egusphere-2026-5115

Lucas Mondon, Nicolas Martin-StPaul, Gregor Rickert, Isabelle Maréchaux et autres

Abstract. Deep roots are assumed to enhance tree survival during drought by providing access to water stored at depth. However, the respective roles of deep soil water storage (SWCDeep) and fine-root distribution (FineRootDistrib), which jointly determine access to deep water during drought, …

fr, de (code pays fourni par la source)

Evolution and Controls of the Large-Scale Surface Freeze-Back Onset in Siberian Permafrost Regions with the ERA5-Land Reanalysis

Cécile Osy, Sophie Opfergelt, Arsène Druel, François Massonnet

Permafrost is a defining feature of the Arctic and sub-Arctic environments. The extent of the permafrost region accounts for about a quarter of the Northern Hemisphere’s terrestrial surface. While most research on permafrost has focused on the summer season—when the active layer …

be, fr (code pays fourni par la source)

Supplementary material to "The more the better? A limited proportion of deep roots maximizes tree survival under drought in Mediterranean forest"

Lucas Mondon, Nicolas Martin-StPaul, Gregor Rickert, Isabelle Maréchaux et autres

fr (code pays fourni par la source)

The more the better? A limited proportion of deep roots maximizes tree survival under drought in Mediterranean forest

Lucas Mondon, Nicolas Martin-StPaul, Gregor Rickert, Isabelle Maréchaux et autres

Abstract. Deep roots are assumed to enhance tree survival during drought by providing access to water stored at depth. However, the respective roles of deep soil water storage (SWCDeep) and fine-root distribution (FineRootDistrib), which jointly determine access to deep water during drought, …

fr, de (code pays fourni par la source)

Beyond climatic drought indices : an hydraulic approach to quantifying forest water stress

Herve Cochard, Maxime Cailleret, Médéric Aubry, Phillipe Balandier et autres

Summary The article introduces a new Forest Stress Index (ISF) based on a plant hydraulic modelling approach rather than classical climatic drought indices. Unlike other index like scPDSI or SPEI, ISF is grounded in xylem embolism dynamics simulated with the mechanistic SurEau …

fr (code pays fourni par la source)

Multiscale intraspecific variation and coordination of hydraulic traits in silver fir

Belén Acuña-Míguez, Alice Copie, François Lefèvre, Maurizio Mencuccini et autres

Abstract Intraspecific variability in hydraulic and morphological traits may alter projections of forest vulnerability to climate change. Recognizing multiscale nature is essential, as trait relationships within populations may not reflect those across the species’ range. We assessed variability in 11 traits in …

Maroc, fr, es (code pays fourni par la source)

Key sources of uncertainty in process‐based modeling of live fuel moisture content

Rodrigo Balaguer‐Romano, Albert Sañé, Nicolas Martin‐StPaul, Julien Ruffault et autres

Process-based models that mechanistically represent water-carbon balances in the atmosphere-soil-plant continuum are an attractive tool for monitoring live fuel moisture content (LFMC) dynamics, a key variable when assessing fire danger. However, their application as operational tools to assess near-term wildfire danger at …

es, Maroc, fr (code pays fourni par la source)

Modelling fine root distribution and its role to increase tree resilience to drought in two Mediterranean forests

Lucas Mondon, Nicolas Martin-StPaul, Gregor Rickert, Arsène Druel et autres

The role and importance of deep roots for tree survival during drought is an intuitive expectation. Numerous studies have examined root distribution, rooting depth, and the use of deep water resources. However, the impact of deep roots systems on the amount of …

fr, de (code pays fourni par la source)

Thinning enhances hydraulic safety but not growth resistance to drought in Atlas cedar on the long-term

Léa Veuillen, Guillaume Simioni, Miquel De Cáceres, E. Badel et autres

· Hydraulic failure risk of Atlas cedar trees is lowered 25 years after thinning. · Hydraulic failure risk is reduced despite vegetation regrowth. · Model simulations support water use complementarity between understory and overstory. · Growth-based drought-stress indicators failed to reflect thinning …

fr, es (code pays fourni par la source)

Multiyear Drought Strengthens Positive and Negative Functional Diversity Effects on Tree Growth Response

Hernán Serrano‐León, Haben Blondeel, Paula Glenz, Johannes Steurer et autres

Mixed-species forests are proposed to enhance tree resistance and resilience to drought. However, growing evidence shows that tree species richness does not consistently improve tree growth responses to drought. The underlying mechanisms remain uncertain, especially under unprecedented multiyear droughts. We used a …

de, bg, be, fr, br, sk, cz, at, cn, gb, it, us (code pays fourni par la source)

Evolution and drivers of the large-scale surface freeze-back onset in Siberian permafrost regions with the ERA5-Land reanalysis

Cécile Osy, Sophie Opfergelt, Arsène Druel, François Massonnet

Abstract. Permafrost is a defining feature of the Arctic and sub-Arctic environments. The extent of the permafrost region accounts for about a quarter of the Northern Hemisphere’s terrestrial surface. While most research on permafrost has focused on the summer season—when the active …

be, fr (code pays fourni par la source)

Beyond proxies: towards ecophysiological indicators of drought resistance for forest management

Alice Copie, Caroline Scotti‐Saintagne, François Lefèvre, Hervé Cochard et autres

As drought-induced mortality increases globally in forest biomes, it becomes necessary for foresters to have access to reliable predictors of species vulnerability to drought and mortality risk under different climatic scenarios. On one hand, there exist several 'operational' indicators of drought resistance, …

fr, es (code pays fourni par la source)