Thomas Perrot

Weak recovery of insectivorous bird populations after ban of neonicotinoid in France, hinting at lasting impacts Neonicotinoids are expected to play a significant role in the decline of bird populations through their adverse effects on food resources (primarily i…

Weak recovery of insectivorous bird populations after ban of neonicotinoid in France, hinting at lasting impacts

#pesticides
#biodiversity
#birds
#pollinators
#bees
#bird_decline
#birddecline
#insects
#neonics
#neonicotinoids

www.sciencedirect.com/science/arti...

Weak recovery of insectivorous bird populations after ban of neonicotinoid in France, hinting at lasting impacts Neonicotinoids are expected to play a significant role in the decline of bird populations through their adverse effects on food resources (primarily i…

New research - Weak recovery of insectivorous bird populations after ban of neonicotinoid in France, hinting at lasting impacts

#pesticides
HT @jeroenvandersluijs.bsky.social
www.sciencedirect.com/science/arti...

⚠️ Takeaway:
✅ Imidacloprid harms insectivorous birds (also shown in 🇺🇸 & 🇳🇱).
❗️But banning a pesticide alone isn’t enough—habitat restoration and ecosystem recovery actions are essential to help insects 🐞 and birds 🐦 bounce back.

📊 Key finding:
Before the ban, sites without imidacloprid hosted 12.7% more insectivorous birds than treated sites.
After the ban, the gap narrowed to 9% → a slight recovery, but far from a full population rebound

We studied the impact of imidacloprid on 57 sedentary bird species across 🇫🇷 before (2013–2018) and after (2019–2022) its ban. 🐦🌱

Weak recovery of insectivorous bird populations after ban of neonicotinoids in France, hinting at lasting impacts Neonicotinoids are expected to play a significant role in the decline of bird populations through their adverse effects on food resources (primarily i…

🚨 New paper in Environmental Pollution
“Weak recovery of insectivorous bird populations after ban of neonicotinoid in France, hinting at lasting impacts”
👉 www.sciencedirect.com/science/arti... / urlr.me/kHNUah

These results were made possible thanks to the support of @frbiodiv.bsky.social

Why it matters 👉 TAT identifies the most toxic molecules + hotspots where biodiversity policies should focus.
Recent bans (e.g. diquat, neonicotinoids) reduced pressures, but impacts on biodiversity still need to be confirmed. 🌍 #biodiversity #TAT

Our findings:
⬇️ Pressure decreased for 4 groups (terrestrial vertebrates, pollinators, soil organisms, aquatic plants)
⬆️ Increased for 1 (aquatic invertebrates)
➡️ Stable for 3 (fish, terrestrial arthropods, terrestrial plants)

Spatially, highest pressures = North & West France.

Temporal trends in pesticide pressure differ among non-target species groups but show spatially consistent patterns across France The negative impacts of pesticides on biodiversity, ecosystem functioning, and human health are broadly documented and numerous policies have been pro…

🚨 New study out in Journal of Hazardous Materials (urlr.me/WCSNJm): we tracked pesticide pressures across France using the new Total Applied Toxicity (TAT) index. Unlike older indicators, TAT accounts for both pesticide amounts and their toxicity. 🌱🐝🐟 #pesticides

📣 🪲 Check out this paper led by @tperrot.bsky.social, which provides a clear demonstration that the intensive use of pesticides can be more detrimental than beneficial for crop production due to their negative impacts on natural pest control.

Crop yield loss under high insecticide regime driven by reduction in natural pest control | Proceedings of the Royal Society B: Biological Sciences Current agricultural pest management mainly relies on the use of synthetic insecticides with strong adverse impacts on the environment or humans. Decreasing crop productivity in the case of pesticide-...

New publication in Proceedings B: urlr.me/qZ39CJ. We show that the use of insecticides reduces rapeseed yields beyond a threshold of 36g/ha. The reason is that insecticides reduce natural regulation, leading to an increase in insect pests and weeds!

Crop yield loss under high insecticide regime driven by reduction in natural pest control | Proceedings of the Royal Society B: Biological Sciences Current agricultural pest management mainly relies on the use of synthetic insecticides with strong adverse impacts on the environment or humans. Decreasing crop productivity in the case of pesticide-...

Nouvelle publication dans Proceedings B: urlr.me/qZ39CJ. Nous montrons que l’utilisation d'insecticides réduit les rendements de colza au-delà d’un seuil de 36g/ha. La raison, les insecticides réduisent la régulation naturelle entraînant une augmentation des insectes ravageurs et des adventices !