Xavier Morin
@xaviermorin.bsky.social
1.5K followers 360 following 18 posts
Chercheur CNRS en écologie forestière au CEFE CNRS Researcher in forest ecology at the CEFE
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xaviermorin.bsky.social
Hélas...
valmasdel.bsky.social
Bonjour,

Avec 60 scientifiques de 54 institutions et 17 pays, nous avons réactualisé le suivi des indicateurs clés du changement climatique et de l'influence humaine jusqu'à fin 2024,
1/...
xaviermorin.bsky.social
The first article of my PhD student Louis Devresse has just been recommended in #PCI-Ecology
In (very) short, it is about modelling eco-evo dynamics of tree communities
ecology.peercommunityin.org/articles/rec...
Integrating evolution and ecology in forests: insights from a mu...
ecology.peercommunityin.org
xaviermorin.bsky.social
▶️Notre article dans @france.theconversation.com sur le décryptage de l’adaptation de la forêt française au changement climatique et notamment le remplacement 'accéléré' de peuplements
avec @joguillemot.bsky.social
@martin-stpaul.bsky.social et Max Bruciamacchie
xaviermorin.bsky.social
I think there is a general pattern out there...
xaviermorin.bsky.social
These results open up new perspectives for forestry policies, by highlighting an overlooked advantage of mixed species over pure stands.
(Note that there is also many side results in the maoin text + appendices)
We hope you'll like the paper! 7/7
xaviermorin.bsky.social
2- The effect of the number of species on productivity can be up to 10 times greater when stand density can vary as a function of species composition (shown through an extensive simulation experiment using a forest dynamics model). 6/7
xaviermorin.bsky.social
Here we report two main findings:
1- When a forest contains more species, it contains more trees on average (shown by analysing the national forest inventories of 6 countries : Finland, Sweden, Germany, Wallonia, France, Spain). To do so we relied on assessing self-thinning lines. 5/7
xaviermorin.bsky.social
= The possible role of processes visible at the stand level, such as the change in maximum tree density, has been ignored, or at best neglected. For example, most of the BEF experiments carried out on this question compare plots with fixed densities. 4/7
xaviermorin.bsky.social
We know that mixed forests are on average more productive than monospecific ones.
Yet, the mechanisms proposed to explain this diversity-productivity link in forests have essentially focused on how the growth of individual trees is impacted by their direct neighbourhood (monospecific vs mixed) 3/7
xaviermorin.bsky.social
Why special? ▶️ 1) the idea came out more than 12 yr ago, 2) testing it required adapting a complete forest dynamics model (which took time) and carrying out numerous simulations (which also took time..), 3) a collaboration with a great team eg. @joguillemot.bsky.social @riottelambert.bsky.social 2/7
xaviermorin.bsky.social
New paper out! 🌳 🌲 (and this one is very special to me)
➡️ Diversity boosts forest productivity also (and especially?) through its effect on the number of trees within forests
besjournals.onlinelibrary.wiley.com/doi/10.1111/...
@journalofecology.bsky.social @cnrsoccitanieest.bsky.social
More ⬇️ 1/7
Reposted by Xavier Morin
revuesesame.bsky.social
🌲 🌳 En quoi la diversité des essences permet-elle à un écosystème forestier de mieux fonctionner, de résister aux aléas, d’héberger plus de #biodiversité et de mieux protéger les sols ?

🖋️ Dans le n°16 de la revue Sesame, @xaviermorin.bsky.social fait le point sur les connaissances actuelles.
Forêts : quel rôle joue la diversité des essences ? - Revue SESAME
Est-il possible de favoriser les forêts mélangées pour mieux adapter ces écosystèmes aux conditions futures ?
revue-sesame-inrae.fr
xaviermorin.bsky.social
🌲 🌳 Lors de son congrès à Lyon, la Société Française d'Ecologie et d'Evolution (SFE²) a publié 3 motions, dont une sur les forêts: 'Pour une politique d’adaptation des forêts hexagonales au changement climatique basée sur l’écologie forestière'
➡️ sfe2-2024.fr/fr/pages/sfe...
SFE2 2024
Centre de Congrès de Lyon - 50, quai Charles de Gaulle 69006 Lyon
sfe2-2024.fr