Julián A. Velasco's Avatar

Julián A. Velasco

@juvelas.bsky.social

Instituto de Ciencias de la Atmósfera y Cambio Climático, Universidad Nacional Autónoma de México Macroecology, climate change, urban biodiversity, scale, https://juvelas.github.io 🇨🇴 in 🇲🇽

1,916 Followers  |  825 Following  |  84 Posts  |  Joined: 25.09.2023  |  1.8277

Latest posts by juvelas.bsky.social on Bluesky


Post image Post image

We know that marine fishes 🐠 have an inverse gradient of speciation compared to that of spp richness, with higher speciation at higher latitudes. But, what about freshwater 🐟?

Find out in the new PhD paper by Juliana Herrera-Pérez and friends (not just colleagues) 🤿 👇

shorturl.at/zgKfA

23.01.2026 21:47 — 👍 24    🔁 10    💬 1    📌 0
Preview
Exxon funded thinktanks to spread climate denial in Latin America, documents reveal Texas-based fossil fuel company financed Atlas Network in attempt to derail UN-led climate treaty process

Big Oil has a long history of interference in Latin America.

Documents reveal that "Exxon funded rightwing thinktanks to spread climate change denial," invest in "market-oriented public policies" and ensure "continued strong returns to Exxon’s investors.” 😑

05.01.2026 16:00 — 👍 10    🔁 10    💬 0    📌 0
Preview
How Ancient Indigenous Societies Made Today’s Amazon More Resilient - Eos Portions of the forest managed by pre-Columbian populations hold higher biomass and are more able to withstand climate change.

The future of the Amazon may rely on its past. According to study, landscape interventions by the forest’s pre-Columbian Indigenous inhabitants might still affect its ecological functions, including its capacity to store biomass, absorb carbon, and withstand climate change

eos.org/articles/how...

18.12.2025 17:40 — 👍 24    🔁 7    💬 1    📌 0
Preview
New estimates of surface temperature change since the late 18th century Releasing an observation-based global temperature dataset extending back to 1781

The new GloSAT temperature dataset extends our observational estimates of global temperature change back to 1781

Blog: climatelabbook.substack.com/p/new-estima...

Paper by Morice et al.: essd.copernicus.org/articles/17/...

15.12.2025 14:10 — 👍 122    🔁 46    💬 4    📌 3

En teoría, si la mayoría de tus cercanos migraron para acá, se debería mantener eso, no? Casi toda la banda académica que seguía y me seguía se movió acá

15.12.2025 14:10 — 👍 1    🔁 0    💬 1    📌 0

Yo por el contrario no, pero creo que es porque ya me saturé de la interacción social virtual

15.12.2025 12:14 — 👍 0    🔁 0    💬 1    📌 0
Post image Post image

Earth's largest land animals are limited by salt.

Sodium availability constrains the density and distribution of elephants, giraffes and rhinos across Africa, and offers a new explanation for the so-called 'missing megaherbivores'.

www.nature.com/articles/s41...
Free access: rdcu.be/eTPY2

09.12.2025 12:35 — 👍 169    🔁 78    💬 6    📌 17
Preview
Faculta Senado a la Guardia Nacional a vigilar Áreas Naturales Protegidas Senado aprueba reforma: Guardia Nacional vigilará Áreas Naturales Protegidas y Bosque de Agua para combatir tala ilegal y tráfico de fauna.

Cuando les instalen una dictadura militar, no vayan a estar llorando...
contralinea.com.mx/interno/sema...

04.12.2025 16:20 — 👍 0    🔁 0    💬 0    📌 0
Preview
La caída de una megarrevista científica expone el pelotazo de las editoriales en la ciencia Una de las cabeceras que más estudios publican en el mundo, expulsada del sistema por irregularidades. Su editorial, Elsevier, supera los 1.300 millones de euros de beneficios al año

1- El truculento caso de la revista "Science of the Total Environment" que cobra 3600 euros por publicar un paper, y cuyo director figuró como coautor de 200 artículos publicados allí mismo. elpais.com/ciencia/2025...

29.11.2025 19:43 — 👍 5    🔁 6    💬 1    📌 0
Post image Post image Post image Post image

I'm happy to share that, together with @juvelas.bsky.social and Daniel Vásquez-Restrepo to examine how Andean uplift influenced the evolution of South American squamates as part of the book Andean Herpetofauna: Explorations of Diversity, Ecology and Conservation by @springernature.com (1/3)

27.11.2025 23:24 — 👍 7    🔁 2    💬 1    📌 0

We are glad to share our recent article pulbished in @pnas.org, where we we demonstrate that plant species that occupy larger geographic ranges tend to have broader climatic niches and are more likely to achieve high local abundances.

12.11.2025 18:11 — 👍 14    🔁 5    💬 1    📌 0

Very happy to finally see this out in @pnas.org. Great work (masterfully) led by my dear friend @gabrielmoulatlet.bsky.social on a classic question on range sizes, climatic niches and dominance for plants at the global scale!

Thanks for the collab, Gabriel!

12.11.2025 18:21 — 👍 15    🔁 7    💬 1    📌 0

Hot off the press! From the PhD thesis of @lopezreyeska.bsky.social where we explored the connection between biogeographic processes and climatic niche dynamics in spiny lizards 👇

07.11.2025 18:59 — 👍 14    🔁 6    💬 0    📌 0
Living Data 2025 - Conference Program Explore the complete conference program with 700+ presentations across 4 days

¿Qué factores determinan la biodiversidad urbana en México? Este viernes en Datos Vivos 2025 hablaré un poco de eso con algunas actualizaciones de los datos que usamos y los factores de riesgo conjunto www.livingdata2025.com/program.html...

22.10.2025 13:53 — 👍 3    🔁 0    💬 0    📌 0

We are honored to be collaborating with @stanfordpress.bsky.social + @pkp.sfu.ca on this project! #BetterPublishing.

19.10.2025 19:35 — 👍 10    🔁 4    💬 0    📌 0
Biogeography Biogeography is an academic-owned, diamond Open Access journal, published by the academic, non-profit, Stanford University Press (SUP), using the Public Knowledge Project’s Open Journal Systems platfo...

The new journals are:

Biogeography (BIOG) is a peer-reviewed journal that publishes articles ranging from biological work that is geographically situated to geographical work that is biologically relevant. biog.journals.sup.org/index.php/biog

30.09.2025 21:01 — 👍 7    🔁 3    💬 1    📌 2
Preview
Log in to X / X Log in to X to see the latest. Join the conversation, follow accounts, see your Home Timeline, and catch up on posts from the people you know.

@peeer.bsky.social We are delighted to announce @sse-evolution.bsky.social has joined 9 other scientific societies in endorsing a Joint Statement on Scientific Publishing peeer.net/societies/ We look forward to developing more affordable, accessible, equitable publishing together #BetterPublishing

19.10.2025 17:48 — 👍 3    🔁 2    💬 0    📌 0

Le diré a mis compas que entren a probar los tacos de ullucos.

18.09.2025 13:15 — 👍 0    🔁 0    💬 0    📌 0

Buscando dizque restaurantes para cenar en Bogotá y aparecen dizque opciones con ofertas de tacos. Qué gonorrea.

17.09.2025 20:52 — 👍 0    🔁 1    💬 1    📌 0
Preview
Evolutionary age correlates with range size across plants and animals - Nature Communications Why are some species widespread while others are found only in small, isolated areas? This study shows that species with narrow ranges, and thus higher extinction risk, are often island-restricted, poor dispersers, and have evolved relatively recently.

Why are some species widespread while others are found only in small, isolated areas? A study in Nature Communications shows that species with narrow ranges, and thus higher extinction risk, are often island-restricted, poor dispersers, and have evolved relatively recently. #evosky 🧪

08.09.2025 22:43 — 👍 53    🔁 22    💬 0    📌 0
Preview
Older species tend to have large ranges – unless they live on islands New Nature Communication publications sheds light on how ecological, evolutionary, and geographical processes can simultaneously shape species’ vulnerability to extinction.

A new @natcomms.nature.com study led by iDiv alumna @adrianaalzate.bsky.social @naturalis.bsky.social uncovered that across >26,000 species evolutionary age is positively linked to range size, except in marine mammals.

#Biodiversity #Evolution #iDivResearch
www.idiv.de/older-specie...

27.08.2025 12:00 — 👍 24    🔁 10    💬 1    📌 2
Post image Post image

¡Hola! Tenemos una oportunidad increíble que compartir 🎉

Si tienes entre 18 y 35 años y eres de Latinoamérica, este taller es para ti. Buscamos jóvenes que tengan una historia real y poderosa sobre cómo el cambio climático está afectando sus vidas y sus comunidades.

24.08.2025 21:08 — 👍 0    🔁 1    💬 1    📌 0
Preview
Convocatoria para ocupar la posición equivalente a Investigador(a) Asociado(a) 'C' de Tiempo Completo en el área de Cambio climático y su impacto en la biodiversidad y seguridad alimentaria Convocatoria: Posición equivalente a Investigador(a) Asociado(a) C de Tiempo Completo en el área de Cambio climático y su impacto en la biodiversidad y seguridad alimentaria,

Convocatoria para ocupar plaza de investigador(a): Cambio Climático, Biodiversidad, Seguridad Alimentaria #UNAM #ICAyCC www.atmosfera.unam.mx/convocatoria...

23.08.2025 19:04 — 👍 1    🔁 0    💬 0    📌 1

"predictions are hard, especially about the future"
(and ESPECIALLY when driven by ideology rather than science)

22.08.2025 01:44 — 👍 65    🔁 22    💬 5    📌 0

Muchas gracias, voy a revisarlos.

25.07.2025 15:50 — 👍 1    🔁 0    💬 0    📌 0

New from me: How China's clean energy manufacturing boom is helping reduce CO2 emissions overseas. In 2024, China’s exports of solar panels, batteries and electric vehicles are shaved 1% off global emissions outside of China.

22.07.2025 05:05 — 👍 137    🔁 68    💬 2    📌 5
Preview
Long-fuse evolution of carnivoran skeletal phenomes through the Cenozoic Climatic change is hypothesized to promote phenotypic diversification. While neontological analyses are often used to test this hypothesis, extant data only captures the time-averaged signal of surviv...

New preprint with @tsengzj.bsky.social & @hlusko.bsky.social! Here, we developed the most comprehensive phenomic dataset of extant and extinct pan-carnivorans to test how Cenozoic climatic change influenced the evolution of the cranial, appendicular, & axial skeleton

www.biorxiv.org/content/10.1...

18.07.2025 14:52 — 👍 10    🔁 2    💬 0    📌 0
Preview
bluesky Global Ecology Feed Digest #27 Curated digest of the bluesky Global Ecology feed on biodiversity, ecosystems & conservation at large scales. Terrestrial, freswater & marine realms.

🌐 Global Ecology feed Digest #27, July 08-15, 18posts!

✨For the lazy (yes we are!) & friends who don't like social media but might benefit from this feed, here’s a DIGEST crafted with 💚 for you to share

👉 globalecologybs.github.io/feeddigest.g...

DM if you want to receive the link weekly

🌍🦤🦑🪴🍁🧪

15.07.2025 11:17 — 👍 7    🔁 2    💬 0    📌 0

Rebien!

15.07.2025 03:58 — 👍 0    🔁 0    💬 0    📌 0
Post image

Parece que viajaremos a Bogotá (no a probar changua).

14.07.2025 22:17 — 👍 3    🔁 0    💬 1    📌 0

@juvelas is following 20 prominent accounts