Category: Non classé

New measurements of soil water content with a neutron probe in drought conditions

This summer, new measurements of soil water content were carried out by Cyril Dejean (Irstea G-EAU unit in Montpellier) on the OPTMix plots using a neutron probe. These new measurements carried out during a period of severe drought (14/08/2018) will complete the range of measurements required to calibrate the soil water content sensors (CS616 – …

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Article published: Better predicting sessile oak and Scots pine growth in a changing climate

An article has just been published in “Agricultural and Forest Meteorology” on the growth of sessile oak and Scots pine. The goal of this work was to integrate climatic variables into models to better predict growth in the context of climate change. This work was performed using IGN data and ring-width data collected in the …

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Article published: The effect of deer browsing and understory light availability on stump mortality and sprout growth capacity in sessile oak

An article presenting results on the effect of deer browsing and understory light availability on stump mortality and sprout growth capacity in sessile oak has just been published in Forest Ecology and Management. The work was carried out on parts of the experimental facility OPTMix. The article is the result of work carried out by …

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Monitoring soil microbial activity

Promoted by Stéphane Bazot from UMR 8079, Laboratory Ecology, Systematics and Evolution of Paris-sud University, a team led by Gaëlle Vincent came to OPTMix in March and mid-June for two campaigns to monitor soil microbial activity. Soil samples were taken for structural analyzes of the communities of bacteria, archaea and fungi. To complete, soil respiration …

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The Research and Development department of National Forest Office comes to visit OPTMix

The research activities carried out on the OPTMix device were presented as part of the annual meeting of the “Research Development and Innovation” (RDI) of the National Forest Office (ONF) on May 30th and 31st, 2018. 70 people from the RDI network came to visit the experimental plots around 4 workshops: Workshop 1: Water resource, …

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OPTMix joins the CLIMATICK project

OPTMix joins the network of the CLIMATICK project which starts in June 2018. OPTMix becomes the 10th site with a monthly monitoring of tick activity after that of ONCFS in Bazes (Pyrénées). see also here Summary of the CLIMATICK project (Isabelle Lebert, INRA UMR EPIA) Le changement climatique modifie la phénologie la distribution des tiques …

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Monitoring and collecting ticks on the OPTMix experimental site

Project partners: INRA Auvergne-Rhône-Alpes – VetAgro Sup, UMR Epidémiologie des maladies animales et zoonotiques (EPIA) The monitoring of tick populations on the OPTMix experimental facility in collaboration with INRA is part of the CCEID project (Climate change and the risk of wildlife-borne infectious diseases emergence in agricultural and forest landscapes) within the ACCAF (Adaptation agriculture …

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OPTMix participates in the creation of a bryophytes database of the Loiret department.

Inventories of bryophytes carried out on the OPTMix device contributed to the production of a database on Loiret bryophytes. An article published in the Symbioses journal (bulletin of the museums of the region Centre – Val de Loire) presents this work. Dumas, Y. and P. Boudier (2018). “Bryophytes loirétaines : bilan des connaissances actuelles.” Symbioses 35-36: …

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A European network of sessile oak – Scots pine plots to better understand the effect of tree species mixture on forest vulnerability (REFORM project)

One of the objectives of the REFORM project (REsilience of FORest Mixtures, ERA-NET SUMFOREST, see also here) is to set up a European network of forest plots comparing pure and mixed stands of sessile oak and Scots pine in order to determine the role of tree species mixture on forest vulnerability. In this framework, three …

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Article published: Influence of forest tree species composition on bryophytic diversity in mixed and pure pine and oak stands

An article dealing with stand composition effect on bryophyte diversity has just been published in Forest Ecology and Management. This work was partly performed on OPTMix experimental plots during the internship of Deki Fourcin (Master 2, Irstea Nogent-sur-Vernisson). Below are the abstract and key points of the article. Gosselin, M., D. Fourcin, Y. Dumas, F. …

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