An article has just been published in “Forest Ecology and Management” on the impact of defoliation on tree growth for sessile oak and Scots pine following heat-drought events: Javoy, T., Perret, S., Couteau, C., Perot, T., 2025. Impact of defoliation on tree growth for sessile oak and Scots pine following heat-drought events. Forest Ecology and …
Category: Non classé
Sep 30
Article published: Importance of species identity, species mixing and understory on carbon and nitrogen stocks in sessile oak and Scots pine stands
An article has just been published in “Science of The Total Environment” about the importance of species identity, species mixing and understory on carbon and nitrogen stocks in sessile oak and Scots pine stands: Korboulewsky, N., Javoy, T., Pérot, T., Ouimet, R., 2025. Importance of species identity, species mixing and understory on carbon and nitrogen …
Sep 29
Do forest thinnings influence understory vegetation?
Joseph BOULNOIS, supervised by Ludovic Henneron at the Ecodiv Laboratory (University of Rouen), successfully completed his M2 internship. He conducted sampling and measurements on understory species within the OPTMix and Gis-Coop networks during spring-summer 2025. Forest stand density influences understory biodiversity and functioning, but the relationships between silvicultural practices and plant functional traits remain little …
Sep 29
X-Risks: Mixed Forest Stands Facing Water Stress and Foliage Herbivory
As part of the PEPR FORESTT X-Risks project, oak leaf samples were collected from resprouts in early September. Out of a total of 1,200 leaves (from low-density plots), measurements of pigments and nitrogen (using the Dualex device), as well as traits such as specific leaf area (SLA), and observations of damage caused by herbivorous insects …
Jul 01
Article published: Capacity of a forest to buffer temperature: Does canopy tree species matter?
An article has just been published in “Agricultural and Forest Meteorology” on the importance of canopy tree species on the capacity of forest cover to buffer temperatures during summer: Perot, Thomas, Marc Saudreau, Nathalie Korboulewsky, Anders Mårell, et Philippe Balandier. Capacity of a forest to buffer temperature: Does canopy tree species matter? Agricultural and Forest …
Jul 01
Article published: How do mixing tree species and stand density affect crown defoliation after heat-drought events?
An article has just been published in “Forest Ecology and Management” on the effects of stand composition and stand density on tree crown defoliation of sessile oak and Scots pine during the five years following a severe heat-drought events: Javoy, T., Perret, S., Perot, T., (2025). How do mixing tree species and stand density affect …
Jun 19
Save the date! symposium 2026 to celebrate 10 years of OPTMix, June 8 to June 12, 2026
The OPTMix (Oak Pine Tree Mixture) French field experiment is celebrating its 10 anniversary with an international symposium inviting us to question management options in the face of climate change: “Adapt forest management to climate change: modulating stand composition, stand density and browsing pressure” The symposium will take place in Nogent-sur-Vernisson, France, from June 8 …
Jun 16
Measurements and sampling as part of Erwan Le Roux’s thesis on the effect of ungulates on soil biodiversity
As part of Erwan Le Roux’s thesis, co-supervised by Stéphane Bazot (ESE Univ Orsay) and Nathalie Korboulewsky, a measurement campaign and soil sampling on a selection of OPTMix plots (O12 low density open and closed) and Renecofor (inside and outside the enclosure) is carried out until July. The measurements on O12 were made at the …
Jun 16
Soil and vegetation sampling for the ANR project “PLASTRAIT”
A team from the University of Rouen came last week to sample soil and vegetation as part of the PLASTRAIT project: “Plasticity in leaf litter quality of tree species: consequences for soil nitrogen cycling and plant-plant interactions.” Last Thursday and Friday (June 12-13), Ludovic Henneron, from the Ecodiv unit, accompanied by three colleagues, sampled soil …
Jan 30
ECOLOGGING: A new connected, reliable and scalable instrumented station tested on OPTMix
As part of an AnaEE 2024 project, Pierre Bordenave (Instrumentation Assistant Engineer, Pierroton Forest Experimental Unit – UEFP) develop and test a low-cost microclimate measurement station in various situations. The goal is to maintain high sensor quality for research while keeping the whole station low-cost and ensuring scalability, as additional sensors (such as soil moisture …
