David Leclere 🇵🇸 🇺🇦's Avatar

David Leclere 🇵🇸 🇺🇦

@dleclere.bsky.social

Researcher at @iiasa.ac.at || land use modeling | biodiversity | climate change || Views are my own

280 Followers  |  1,114 Following  |  6 Posts  |  Joined: 16.11.2024  |  1.9036

Latest posts by dleclere.bsky.social on Bluesky

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Global goal of zero deforestation by 2030 is severely off track Global deforestation hasn’t slowed in any significant way in the four years since 127 countries pledged to halt and reverse forest loss and degradation by 2030. The newly published 2025 Forest…

Global deforestation hasn’t slowed in any significant way in the four years since 127 countries pledged to halt and reverse forest loss and degradation by 2030.

The newly published 2025 Forest Declaration Assessment shows that nations are 63% off track from meeting their zero-deforestation target.

15.10.2025 11:17 — 👍 25    🔁 22    💬 1    📌 2
Change in distribution and abundance of southern right whales. (A) Shows historical and contemporary wintering distributions (Figure 1 from Carroll et al., 2018), and (B) shows decline in abundance and subsequent recovery (solid line is the mean, dashed line shows upper and lower 95% CI). Modified Figure 1 from Jackson et al. (2008). Contemporary sightings are divided into regions where large aggregations are seen during winter: Argentina (ARG), Brazil (BZL), South Africa (SAF), southwest Australia (SWA), south central Australia (SCA), and New Zealand sub-Antarctic (NZSA) and regions where sightings are typically of small numbers of individuals per year. The large aggregations are IWC management units and correspond to historical whaling grounds, although another 5 whaling grounds show little sign of recovery. Summer feeding areas are poorly described and so not shown.

Change in distribution and abundance of southern right whales. (A) Shows historical and contemporary wintering distributions (Figure 1 from Carroll et al., 2018), and (B) shows decline in abundance and subsequent recovery (solid line is the mean, dashed line shows upper and lower 95% CI). Modified Figure 1 from Jackson et al. (2008). Contemporary sightings are divided into regions where large aggregations are seen during winter: Argentina (ARG), Brazil (BZL), South Africa (SAF), southwest Australia (SWA), south central Australia (SCA), and New Zealand sub-Antarctic (NZSA) and regions where sightings are typically of small numbers of individuals per year. The large aggregations are IWC management units and correspond to historical whaling grounds, although another 5 whaling grounds show little sign of recovery. Summer feeding areas are poorly described and so not shown.

The global whaling industry experienced a boom c. 1840-1950 as technology allowed whalers to hunt the Southern Ocean around Antarctica.

Under standard models, we would have expected krill populations to have *exploded*.

Instead, they DROPPED exponentially.

Let's talk about the KRILL PARADOX.

09.10.2025 13:03 — 👍 233    🔁 109    💬 4    📌 15

Save the Date! Am 13. November 2025 findet der 11. @bokuvienna.bsky.social Nachhaltigkeitstag statt, unter dem Motto „Renaturierung & Biodiversität“.
📍 Eintritt frei – keine Anmeldung erforderlich.
➡️ Alle Infos unter short.boku.ac.at/nht2025
#BOKUNachhaltigkeitstag #Renaturierung #Biodiversität

08.10.2025 16:41 — 👍 11    🔁 6    💬 1    📌 0

Bon courage !!

07.10.2025 15:41 — 👍 1    🔁 0    💬 0    📌 0
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🚂 Sauvons les trains de nuit Paris-Berlin et Paris-Vienne Signez la pétition maintenant !

🚂 A peine lancés et déjà supprimés ? Sauvons les trains de nuit Paris-Berlin et Paris-Vienne, un voyage bas-carbone largement plébiscité par ses utilisateurs
agir.greenvoice.fr/petitions/sa...

26.09.2025 17:41 — 👍 0    🔁 0    💬 0    📌 0
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The BBNJ agreement comes into force!

A victory for our oceans, planet and environmental multilateralism.

Now the work begins. Quick, effective implementation is key.

Our ocean is the foundation of our very existence. Today we took an important step to save not only our ocean, but also our future.

20.09.2025 05:06 — 👍 55    🔁 24    💬 2    📌 2
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🚨 First call! 🚨

European Congress for Conservation Biology (Leiden, the Netherlands in July 6th to 10th 2026) is open for proposals: symposia, panels, workshops & training on effective biodiversity conservation.

Deadline Oct 31st 2025 👉 eccb26Leiden.eu #ECCB2026

18.09.2025 08:47 — 👍 14    🔁 13    💬 0    📌 2
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🧵 1/4

🔬💧 Over 600 scientists from across Europe have signed a joint statement calling on the EU to urgently update its water pollution rules.

📢 Freshwater ecosystems are collapsing - and outdated policies aren't keeping up.

Full statement ➡️ www.fba.org.uk/fba-voice/sc...

#HandsOffNature

17.09.2025 06:06 — 👍 84    🔁 53    💬 1    📌 3
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#UN confirms: people in #Gaza suffer from a #famine.

A famine "openly promoted" by the government of #Israel as a weapon of war.

22.08.2025 13:33 — 👍 15    🔁 15    💬 0    📌 2
Post image 08.08.2025 17:29 — 👍 69    🔁 56    💬 1    📌 1

🤢

22.08.2025 12:39 — 👍 0    🔁 0    💬 0    📌 0
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On l’a fait ! 500 000 signatures avec 200 000 signatures en moins de 10h ce samedi 🔥
Il est désormais possible qu’il y ait un (vrai) débat à l’Assemblée nationale sur l’abrogation de la loi Duplomb.

Nouvel objectif 1 MILLION de signatures !!
petitions.assemblee-nationale.fr/initiatives/...

19.07.2025 14:03 — 👍 899    🔁 391    💬 34    📌 19

A detailed and heartbreaking report on how Israel systematically destroyed Gaza’s bookstores, printing presses, and publishing houses. It turned centers of learning and knowledge production into ruins and ashes.

Please share widely.

14.07.2025 16:26 — 👍 170    🔁 130    💬 3    📌 1
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Pour 2 millions, le Collège de France perd le droit de critiquer Total L’institution doit s’abstenir de tout propos susceptible de porter atteinte à l’image de la firme pétrolière, mécène de sa chaire Avenir Commun Durable.

revue21.fr/article/coll...

04.07.2025 17:13 — 👍 240    🔁 200    💬 14    📌 29
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Trump to strip protections from millions of acres of national forests The USDA announced it would begin the process of rolling back protections for nearly 59 million roadless acres of the National Forest system.

There are way too many things to be upset about these days, but I believe the destruction of public lands should be near the top of the list: www.washingtonpost.com/climate-envi...

23.06.2025 22:56 — 👍 861    🔁 345    💬 18    📌 18
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Addressing critiques refines global estimates of reforestation potential for climate change mitigation - Nature Communications Reforestation is a key climate change mitigation strategy, but global maps of its potential are widely criticized. This study shows that addressing those critiques substantially refines estimates of t...

A couple years ago, I was approached by some scientists at The Nature Conservancy with a proposal: Would I help them create a better global restoration opportunity map? The resulting paper is now out, and I will explain my view of it in this thread. www.nature.com/articles/s41...

23.06.2025 17:44 — 👍 35    🔁 21    💬 2    📌 3
Global extent of natural forests in 2020 (according to Neumann et al. in review) based on a probability threshold of 0.52.

Global extent of natural forests in 2020 (according to Neumann et al. in review) based on a probability threshold of 0.52.

A new global map of natural forest at 10-m resolution created by Neumann et al. create using Google DeepMind - preprint still in review but available here: eartharxiv.org/repository/v... 🌐 🌏 🧪

20.06.2025 09:00 — 👍 86    🔁 30    💬 4    📌 2

Nature Human Behaviour chose to highlight my article with Thomas Douenne and @linusmattauch.bsky.social by commissioning a Research Briefing.

You can find it under paywall: www.nature.com/articles/s41...
And here in open access: github.com/bixiou/globa...

A timely contribution before #FfD4!

19.06.2025 17:56 — 👍 16    🔁 6    💬 0    📌 0

The great land selloff in the reconciliation bill -- they are selling off huge chunks of the west and Alaska, what is now Forest service and BLM land.

17.06.2025 01:59 — 👍 19    🔁 12    💬 4    📌 0
Closing the biodiversity funding gap

📣 Call to Action for Biodiversity! 🌱
We urge the EU to boost biodiversity funding in the next Multiannual Financial Framework (2028+).
📉 80% of EU habitats are in poor condition — we need action now!
All scientists please ✅ sign and 🔁 share in your networks
fundnature.scientists4future.at

13.06.2025 07:55 — 👍 46    🔁 22    💬 13    📌 12
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Addressing equity challenges in the environmental governance of food supply chains: the case of deforestation-risk commodities in the tropics Future of Food seminar: Professor Rachael Garrett

We are looking forward to welcoming @rachgarr.bsky.social to @oxmartinschool.bsky.social next week Wednesday (18 June) to talk about equity challenges in the environmental governance of food supply chains. Open to all!

Bookings:
www.futureoffood.ox.ac.uk/event/talk-b...

09.06.2025 10:43 — 👍 5    🔁 5    💬 1    📌 0

🌿 How can we secure lasting funding for Europe’s nature network? Don’t miss this @naturaconnect.bsky.social webinar on financing the Trans-European Nature Network - from costs to innovative solutions and what’s next for EU funding 👇

13.06.2025 06:16 — 👍 2    🔁 2    💬 0    📌 0
Screenshot of the title and author list from the Correspondence article "Six actions for ecologists in times of planetary crisis"  from the Nature Ecology & Evolution homepage

Screenshot of the title and author list from the Correspondence article "Six actions for ecologists in times of planetary crisis" from the Nature Ecology & Evolution homepage

Six actions for ecologists in times of planetary crisis: www.nature.com/articles/s41...

✅Explicitly recognize and address the #biodiversity crisis
✅Explore positive futures
✅Defend academic freedom
✅Go political
✅Inspire society
✅Address the colonial legacy of ecology

Free to read: rdcu.be/eqjlk

10.06.2025 10:18 — 👍 44    🔁 28    💬 0    📌 4
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Scientists accuse New Zealand and Ireland of trying to cover up livestock emissions ‘Accounting trick’ to support methane-emitting sectors undermines fight against climate change, say researchers

This is incredibly unfair: high-income nations with large dairy sectors are looking to adopt a "no additional warming" target, avoiding the methane cuts needed to meet international targets and pledges.

We have written an open letter to the NZ PM and I spoke to the FT👇🧵

www.ft.com/content/2ea6...

02.06.2025 12:19 — 👍 127    🔁 52    💬 7    📌 10
POLLEN Conference 2026 - POLLEN To learn more about our rational and purposes, then please look at this page , or download this document. If would like to participate then the first step is to propose a panel, or some other contribu...

Political Ecology Network (POLLEN) Conference in Barcelona, June 2026. Help us disseminate the event and submit your articles, please! @icta-uab.bsky.social @pollenetwork.bsky.social

pollenpoliticalecology.network/pollen-2026/

19.05.2025 07:56 — 👍 23    🔁 17    💬 1    📌 0
a chart showing power consumption of big tech companies

a chart showing power consumption of big tech companies

hey lovelies, I finally got around to publicly sharing my compilation of big tech energy and emissions data. I'll be using it in articles, posts etc but it's yours too, free to use (w/ attribution is nice)

ketanjoshi.co/2025/05/23/d...

26.05.2025 19:47 — 👍 800    🔁 345    💬 31    📌 25
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This country is slowing climate action. Its capital city is stepping up As many federal governments slow — or reverse — climate action, Austria's capital, Vienna, wants to show how cities can take the lead.

As many federal governments slow — or reverse — climate action, Austria's capital, Vienna, wants to show how cities can take the lead. 🍃🇮🇩

The first in a series (!) of positive climate solution stories, only on @npr.org 📻🎧

13.05.2025 19:48 — 👍 155    🔁 50    💬 3    📌 0

Une économie qui va couter très cher:

Le cout du traitement des pesticides dans l'eau juste pour avoir de l'eau potable au robinet serait de l'ordre du milliard d'euros par an...
Et on supprime des aides pour l'agence qui promeut la seule agriculture qui fait sans?
Fausse économie, fausse route?

20.05.2025 15:52 — 👍 54    🔁 31    💬 1    📌 1
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Find out about recent research looking at the potential to restore farmland areas back to natural landscapes, focussing on a case study from Brandenburg, Germany.

🔗
doi.org/10.1016/j.la...

Published in Land Use Policy, Volume 154
@ufz.de @zalf.bsky.social

15.05.2025 13:09 — 👍 6    🔁 3    💬 0    📌 0

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