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 - ThreadSky

xaviermorin.bsky.social • 48 days ago

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
https://besjournals.onlinelibrary.wiley.com/doi/10.1111/1365-2745.14460
@journalofecology.bsky.social @cnrsoccitanieest.bsky.social
More ⬇️ 1/7

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tomkimmerer.bsky.social•47 days ago

This is terrific. Thank you Xavier. Your paper is on my reading list for tonight.

alex-ecology.bsky.social•46 days ago

Nice one! I've always suspected that part of the effect of tree richness on productivity is modulated by its influence on stand density. We found a similar effect on root biomass in this less known #oikos particle: https://nsojournals.onlinelibrary.wiley.com/doi/pdf/10.1111/oik.07777

xaviermorin.bsky.social•46 days ago

I think there is a general pattern out there...

xaviermorin.bsky.social•48 days ago

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•48 days ago

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•48 days ago

= 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•48 days ago

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•48 days ago

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•48 days ago

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

stevoallain.bsky.social•43 days ago

@jamesbonthron.bsky.social

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