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Posts by Guy Pe'er

@fao.org: The crisis in input delivery and prices is an important moment to rethink farmers' dependence of agrochemicals, and invest in more resilient ways to farm the land.
Relevant terms are agroecology, organic farming, sustainable farming, conservation farming - all missing in this statement.

2 days ago 3 0 1 1

An exercise in cherry-picking: there are various ways to obtain iron, while over-consumption and over-production of meat have well-established negative impacts on human health and the environment.
Hey, @fao.org, what societal role are you playing?

2 days ago 5 0 0 1
An image of the cover of the IPBES Nexus Assessment Report. Overlay text reads: “Nexus Assessment Report. Laid-out report in English available now.”

An image of the cover of the IPBES Nexus Assessment Report. Overlay text reads: “Nexus Assessment Report. Laid-out report in English available now.”

#DidYouKnow that the laid-out version of the FULL IPBES #NexusAssessment Report is now available?

Dive deep to explore interlinkages among nexus elements & how indirect drivers of biodiversity loss have affected them and their interactions.

👉 Full report in English: https://ow.ly/6e6b50YB4Qp

6 days ago 7 5 0 0

Indonesia is intensively removing huge tracts if East Asia's densest tropical forests. Could this possibly have large scale effects?
This is going to cost many lives far beyond wildlife.

1 week ago 5 0 0 0
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Pesticide lobby instrumentalising farmer protests in its attack on EU health regulations | Corporate Europe Observatory The pesticide lobby is opportunistically planning to use farmers’ protests, in order to create political momentum to slash EU safety rules for its products. But the free trade deal EU-Mercosur that is...

We cannot move towards more sustainable or indeed just societies with industry lobbying and misrepresenting citizens www.corporateeurope.org/en/2025/12/p...

2 weeks ago 1 1 0 0
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2/2 not far off this site, two ladies found a poor bumblebee on the path. She seemed to have collected poisoned pollen, and could barely move. We found ourselves conversing about sublethal effects of glyphosat on bees, farmers & rural citizens.
A sad Easter topic.

2 weeks ago 4 3 0 0
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Something went seriously wrong about our relation with (mother) nature, and it seems to culminate with agriculture.
Taking a walk around the village where we stay for Easter, it's painful to see how much poison is takes to achieve a 'clean' field. Clean of life, that is.
1/2.

2 weeks ago 2 1 1 0
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How Paris swapped cars for bikes – and transformed its streets Under outgoing mayor Anne Hidalgo, the French capital added bike lanes, cut traffic and reclaimed public space, but not without resistance

How Paris swapped cars for bikes – and transformed its streets

2 weeks ago 237 70 4 9
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Addressing Gaps in Butterfly Population Monitoring to Catalyze Global Insect Conservation The conservation community sorely lacks a global indicator of change in insect populations. Given widespread insect declines, addressing this gap is key for conservation and policy targets. We sugges...

We’re missing a global indicator to track insects. By analyzing thousands of butterfly populations, we highlight both promising signals and key challenges—showing why these taxa are strong candidates for building a Global Index to support conservation. conbio.onlinelibrary.wiley.com/doi/10.1111/...

4 weeks ago 24 17 0 1

I'm happy and proud for our contribution to a global dataset of butterfly monitoring data, as comprehensive as possible, and the first attempt to compute a 'Living Planet Index' for butterflies.
Thanks Fede for leading this!
(Main conclusion: more gaps than knowledge for most parts of Earth)

2 weeks ago 9 0 0 0

Sounds like an amazing trip. I guess bringing a different perspective is not always most 'popular' and might be frustrating, but often nonetheless interesting, refreshing and/or innovative. Now you're a foreigner in your own country...

2 weeks ago 1 0 1 0
Home

You may need to make more friends out of Australia then...
In the EU project 'UNPplus' urbannatureplans.eu you may find some.
Lighthouse cities are Paris and Barcelona.

2 weeks ago 1 0 2 0
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Using Vegetable Oils for Biofuel Accelerates Tropical Deforestation and Increases Carbon Emissions In a new paper, Tzu-Hui Chen, Rich Sexton, and I show that biofuels derived from vegetable oils have likely increased, rather than reduced, global emissions.

When the indirect land use effects are accounted for using empirical data, it shows that using vegetable oils for biofuels isn’t better for the climate than burning fossil fuels—it actually increases GHG emissions.

1 month ago 72 17 2 0
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Insects in the tropics are already near their heat limits – climate change could push many beyond survival Many insects in Africa are likely to face dangerous levels of heat stress, with serious consequences for ecosystems.

Insects. Vital in so many ways; neglected in so many ways too. theconversation.com/insects-in-t...

2 weeks ago 5 3 1 0
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"Citizen science helps reveal how urban land management shapes butterfly communities": Paper led by Andrea Büermann accepted and available here:
doi.org/10.1016/j.ba...
Using data from 'VielFalterGarten' project (Leipzig, DE) = 15-min observations, we show that improved urban green sites works!

2 weeks ago 8 4 0 0
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Trends of 2e gen Wall (argusvlinder, L megera) on Dutch Butterfly Monitoring transects show 3 groups: more or less stable in coastal dunes, 80-90% decline on semi-natural grassland and urban and 95-99% decline in agriculture and woodland.

4 weeks ago 22 6 2 0
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Host plant use is driven by microclimate not nutritional quality in a grassland butterfly Small Copper butterflies (Lycaena phlaeas) choose to lay eggs on host plants growing in warmer microclimates, despite lower nitrogen content. Bare ground created by European Moles increases host pla.....

Woops, seems the DOI link to the paper isn't working yet, this one is: resjournals.onlinelibrary.wiley.com/doi/10.1111/...

1 month ago 11 2 0 1
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A female Small Copper butterfly (Lycaena phlaeas) egg-laying on Common Sorrel (Rumex acetosa)

A female Small Copper butterfly (Lycaena phlaeas) egg-laying on Common Sorrel (Rumex acetosa)

Two eggs of the Small Copper butterfly (Lycaena phlaeas) on Common Sorrel (Rumex acetosa)

Two eggs of the Small Copper butterfly (Lycaena phlaeas) on Common Sorrel (Rumex acetosa)

Excited to see one of my PhD chapters now published! We found a trade-off between the quality of host plants and how warm they were for a declining grassland butterfly (Small Copper, Lycaena phlaeas) and looked at how this shaped their egg-laying choices: doi.org/10.1111/een....

1 month ago 100 22 4 5
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Global warming and excess nitrogen may induce butterfly decline by microclimatic cooling Global warming may explain the current poleward shift of species distributions. However, paradoxically, climatic warming can lead to microclimatic cooling in spring by advancing plant growth, an effe...

This underlines how thermally constrained Small Coppers (and other grassland insects) can be and suggests that impacts of excessive atmospheric nitrogen deposition on these warmth-loving species are more likely to be via changes in habitat structure than host quality, see: doi.org/10.1111/j.13...

1 month ago 10 2 1 0
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After the extremly hot and dry summer of 2018 numbers of the Dark green fritillary (S aglaja, grote parelmoer) on Dutch Butterfly Monitoring transects crashed and has not recovered. I fear it could get extinct in NL soon, what is amazing for a species that can live in so many different habitats.

1 month ago 33 14 1 0
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I like snow, sure, but one has to admit that a carpet of flowers is nicer for the soul and mind.
(Botanical gardens, Leipzig).

1 month ago 8 0 0 0
Junonia orithya, a migratory Nymphalid, on the eastern beach of the Sea of Galilee (Kineret) in Israel. Picture by Ilan Green Swissa

Junonia orithya, a migratory Nymphalid, on the eastern beach of the Sea of Galilee (Kineret) in Israel. Picture by Ilan Green Swissa

Strange weather events carry strange migratory species: shortly before the rockets start showering on them, volunteers in Israel report on the arrival and establishment of a local population of Junonia orithya (Blue Pensy) on the beaches of the Sea of Galilee, along the rift valley.

1 month ago 7 1 0 1
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And now a Comma in the garden. That’s three butterfly species today, and it’s still February @dorsetbutterflies.bsky.social @savebutterflies.bsky.social

1 month ago 63 5 1 0

P.S. Haribo, viel von dem Müll gehört euch. Habt ihr überlegt, weniger Plastik zu verwenden? Und, mittlerweile, die Reinigung zu finanzieren?

2 months ago 3 1 0 0
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Rosamontag in Ratingen: viel Spaß, gute Laune, aber so viel Zucker u Plastik, so viel Müll u Kalorien wurden auf den Boden geworfen! Es kam zu dem Punkt, an dem die Kinder das alles einfach ignoriert haben.
Wirklich, Leute, habt ihr keine bessere Art zu feiern?!

2 months ago 4 2 2 0
Information for the Media - Georg-August-University Göttingen Website of the Georg-August-University Göttingen

www.uni-goettingen.de/en/3240.html...
Hidden insect diversity in grass shoots threatened by mowing

2 months ago 12 7 0 0
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Between extreme weather events, there are also days when the weather behaves itself as it should. Like, winter as winter.

2 months ago 4 0 0 0
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Grüne Handelspolitikerin über Vertrag: „Das Mercosur-Abkommen könnte Gefahr für EU-Gesetzgebung werden“ Die grüne Europa-Abgeordnete Anna Cavazzini verteidigt die gerichtliche Prüfung des Handelsvertrags. Dieser schade Bauern, Regenwald und Klima.

#Mercosur-Abkommen könnte Gefahr für EU-Gesetzgebungskompetenz werden, warnt die grüne Europa-Abgeordnete Anna Cavazzini. Sie verteidigt die gerichtliche Prüfung des Handelsvertrags. Dieser schade #Bauern, Regenwald und #Klima. taz.de/Gruene-Hande... #Mercosur @annacavazzini.bsky.social

2 months ago 23 14 3 1
This line graph illustrates the percentage change in agency staff levels from the previous year for nine major U.S. federal scientific and health organizations between the fiscal years 2016 and 2025. The agencies tracked include the CDC, Department of Energy, EPA, FDA, NASA, NIH, NIST, NOAA, and NSF. For the majority of the timeline between 2016 and 2023, the agencies show relatively stable fluctuations, generally staying within a range of +5% to -5% change per year. However, there is a dramatic and uniform plummet starting in the 2024–25 period. Every agency depicted shows a sharp downward trajectory, with staffing losses ranging from approximately -15% to over -25%. The Environmental Protection Agency (EPA) shows the most significant decline, dropping to roughly -26%, while the National Institute of Standards and Technology (NIST) shows the least severe but still substantial drop at approximately -15%.

This line graph illustrates the percentage change in agency staff levels from the previous year for nine major U.S. federal scientific and health organizations between the fiscal years 2016 and 2025. The agencies tracked include the CDC, Department of Energy, EPA, FDA, NASA, NIH, NIST, NOAA, and NSF. For the majority of the timeline between 2016 and 2023, the agencies show relatively stable fluctuations, generally staying within a range of +5% to -5% change per year. However, there is a dramatic and uniform plummet starting in the 2024–25 period. Every agency depicted shows a sharp downward trajectory, with staffing losses ranging from approximately -15% to over -25%. The Environmental Protection Agency (EPA) shows the most significant decline, dropping to roughly -26%, while the National Institute of Standards and Technology (NIST) shows the least severe but still substantial drop at approximately -15%.

This is the most astonishing graph of what the Trump regime has done to US science. They have destroyed the federal science workforce across the board. The negative impacts on Americans will be felt for generations, and the US might never be the same again.

www.nature.com/immersive/d4...

3 months ago 14835 8565 92 795

''Knowledge is power''?
US solution:
No scientists, no science.

But hey, the people are there, and the knowledge which they already produced cannot be wiped under the carpet (although, bots in social media will try to cover it by mud).

What we may observe is, e.g., resistance by existence.

3 months ago 1 0 0 0