Julián A. Velasco
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 🇲🇽
- Reposted by Julián A. VelascoWe 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
- Reposted by Julián A. VelascoBig 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.” 😑
- Reposted by Julián A. VelascoThe 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...
- Reposted by Julián A. VelascoThe 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/...
- Reposted by Julián A. VelascoEarth'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
- Cuando les instalen una dictadura militar, no vayan a estar llorando... contralinea.com.mx/interno/sema...
- Reposted by Julián A. Velasco1- 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...
- Reposted by Julián A. VelascoI'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)
- Reposted by Julián A. VelascoWe 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.
- Reposted by Julián A. VelascoVery 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!
- in "General laws of biodiversity: Climatic niches predict plant range size and ecological dominance globally", we provide key insights into species’ vulnerability to environmental change and the processes that structure biodiversity at global scales. www.pnas.org/doi/10.1073/...
- Reposted by Julián A. VelascoHot 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 👇
- Interested in the biogeography of lizards?🦎 We studied the historical biogeography of Sceloporus lizards and the link between their dispersal and climatic niches 🌎🌦️ @fabrovillalobos.bsky.social @ndimhypervol.bsky.social @biojlinnsoc.bsky.social Learn more here 👇: academic.oup.com/biolinnean/a...
- ¿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...
- Reposted by Julián A. VelascoWe are honored to be collaborating with @stanfordpress.bsky.social + @pkp.sfu.ca on this project! #BetterPublishing.
- 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
- Reposted by Julián A. VelascoThe 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
- Reposted by Julián A. Velasco@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
- Buscando dizque restaurantes para cenar en Bogotá y aparecen dizque opciones con ofertas de tacos. Qué gonorrea.
- Reposted by Julián A. VelascoWhy 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 🧪
- Reposted by Julián A. VelascoA 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...
- Reposted by Julián A. Velasco¡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.
- Convocatoria para ocupar plaza de investigador(a): Cambio Climático, Biodiversidad, Seguridad Alimentaria #UNAM #ICAyCC www.atmosfera.unam.mx/convocatoria...
- Reposted by Julián A. Velasco"predictions are hard, especially about the future" (and ESPECIALLY when driven by ideology rather than science)
- Reposted by Julián A. VelascoNew 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.
- Reposted by Julián A. VelascoNew 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...
- Reposted by Julián A. Velasco🌐 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 🌍🦤🦑🪴🍁🧪
- Parece que viajaremos a Bogotá (no a probar changua).
- In this paper, we identify the main factors that determine the spatial variation in richness of the hyperdiverse snake family Dipsadidae. Current climate outperforms historical factors in this case. #Macroecology #Snakes onlinelibrary.wiley.com/doi/10.1002/...
- Here we explore how different human stressors are potentially impacting spatial diversity and extinction risk patterns in marine turtles worldwide #Macroecology #MarineTurtles #Oceans onlinelibrary.wiley.com/doi/10.1111/...
- Último día en el zócalo de Oaxaca, una de las ciudades con más biodiversidad urbana en México: journals.plos.org/plosone/arti...
- Talking about the potential impacts of a SRM intervention on the Latitudinal Diversity Gradient and Protected Areas in the Americas at #ATBC2025
- Reposted by Julián A. VelascoThe scaling of seed-dispersal specialization in interaction networks across levels of organization vist.ly/3n7nvt2 #Macroecology #MetaNetwork
- Reposted by Julián A. VelascoNew day, new paper! 🦣🌍 Led by @mapaslab.bsky.social ab.bsky.social PhD student Sofía Galván and out now in Global Ecology and Biogeography in which we asked: "Could future palaeontologists detect today’s biodiversity patterns from fossils alone?" 🔗 onlinelibrary.wiley.com/doi/10.1111/...
- Reposted by Julián A. VelascoFinally out ! We combined interaction network and ecological niche theories under a macroecological lens to show that spp’ network importance (centrality) varies within their climatic niches. @asn-amnat.bsky.social doi.org/10.1086/736357 #Macroecology
- Reposted by Julián A. VelascoI’m 39. 3 years ago I left academia. My biggest regret? Not building a network outside it. I thought great science would be enough. It wasn’t. Visibility builds trust Visibility opens doors — especially when you leave the lab. Start showing up. Share your Science. Start now. 🧪 #SciComm
- Reposted by Julián A. VelascoIf you think the seasons are feeling… different, you may be right. Our new review in Science (@science.org) shows that Earth’s changing rhythms could have major and underestimated consequences for life on Earth. 🌍🧵 www.science.org/doi/10.1126/...
- Do you want to know how past climate change drove speciation rates in amphibians (and their different clades) across geography? Check our latest paper led by @adriangarcia-r.bsky.social, in collaboration with @fabrovillalobos.bsky.social, @franzessl1.bsky.social Link: rdcu.be/eogmd
- 🚨🔊Our new paper is out @commsbio.nature.com! 🔥We explore the global variation in speciation rates across >7,000 amphibian species-& the environmental factors that might drive it 🌎⛰️🌡️ Dive into what we found: rdcu.be/eogmd 🙏 @fabrovillalobos.bsky.social @juvelas.bsky.social @franzessl1.bsky.social
- Reposted by Julián A. VelascoWanna know what drives the latitudinal speciation gradient of amphibians? Get your answer in our new OA paper, with my great friends and colleagues @adriangarcia-r.bsky.social (lead) and @juvelas.bsky.social 🇨🇷🇲🇽🇨🇴🇦🇹🇧🇷
- 🚨🔊Our new paper is out @commsbio.nature.com! 🔥We explore the global variation in speciation rates across >7,000 amphibian species-& the environmental factors that might drive it 🌎⛰️🌡️ Dive into what we found: rdcu.be/eogmd 🙏 @fabrovillalobos.bsky.social @juvelas.bsky.social @franzessl1.bsky.social
- Reposted by Julián A. Velasco🚨🔊Our new paper is out @commsbio.nature.com! 🔥We explore the global variation in speciation rates across >7,000 amphibian species-& the environmental factors that might drive it 🌎⛰️🌡️ Dive into what we found: rdcu.be/eogmd 🙏 @fabrovillalobos.bsky.social @juvelas.bsky.social @franzessl1.bsky.social
- Reposted by Julián A. VelascoMassive work by my friend and colleague @gabrielmoulatlet.bsky.social showing that most Amazonian species (vertebrates and plants) are exposed to metal contamination from mining activities from Gabriel's postdoc w/ @bjenquist.bsky.social #BiogeographyOfRisk #Macroecology
- Metal derived from mining are causing widespread effects in the biodiversity. Check our new preprint on the species exposure to metal in the Amazon. More than 65% of all species are exposed to metal contamination, even in remote area. www.biorxiv.org/content/10.1... @fabrovillalobos.bsky.social
- Si quiere saber cómo el deshielo de Groenlandia podría afectar a la biodiversidad, y en especial a los anfibios, puedes leer un capítulo que escribí hace poco en este libro en español (página 83). www.pincc.unam.mx/publicacione...
- El deshielo de Groenlandia puede ocasionar un apagón de la corriente del golfo (AMOC) lo que ocasionaría un cambio climático abrupto al que probablemente no podamos responder.
- Resumen sometido a Living Data 2025. A ver si nos vemos en Bogotá en Octubre. www.livingdata2025.com/index.html
- A corta parada antes de volver a Ciudad de México.
- Reposted by Julián A. VelascoI was the editor of the paper in The Cryosphere that this piece in live science is based on, and I have to say I didn't recognise the study *at all* from this description. Go + read it. tc.copernicus.org/articles/19/... And then wonder if we're really communicating the science well? properly.
- Reposted by Julián A. Velasco🇨🇳 Key developments from China: 📉 China’s CO2 emissions fell due to clean energy, for the first time. 🌾 High temperatures and low rainfall in central China threatened wheat output. ⚡ Xi touted “clean energy” cooperation with Latin America and the Caribbean.
- Reposted by Julián A. VelascoInterested in the macroecology of interactions? Waste no time and check out our new review on the scaling of specialization across network levels, from individuals to species and local to meta-networks nsojournals.onlinelibrary.wiley.com/doi/10.1002/... #Macroecology #BioticInteractions
- Talking about how terrestrial biodiversity will be affected under a solar modification scenario (SRM) at Global Forum Degrees at Cape Town #DGF2025
- Dos estudiantes con quienes colaboré defendieron sus tesis hoy. Uno de maestría, Mateo Vega, en Ecuador y otro de doctorado, Jhan Salazar, en EEUU, a la misma hora. Habrá que celebrar por ellos acá.
- Reposted by Julián A. VelascoOur study on the biodiversity impacts of agriculture in @natureecoevo.bsky.social rdcu.be/ekept Minimizing biodiversity loss requires a balance of expansion and intensification,while preserving unmodified land #Biodiversity #LandUse #ConservationScience @dleclere.bsky.social @tnewbold31.bsky.social
- Reposted by Julián A. VelascoOur colleagues measure thousands of tropical plots to discover species, measure carbon, and get the truth about climate change impacts. Data don't come easy... Central Brazil October 2023: It's very hot and the bees are swarming. Thank you Edmar Almeida de Oliveira, Beatriz Marimon and colleagues!
- Reposted by Julián A. VelascoThe new era of global bird phylogenies begins – this one built over several years by @snacktavish.bsky.social and team massively increases sample size and will be a fantastic resource for macroevolution and macroecology. 🪶 🌐 🧪
- Reposted by Julián A. VelascoA users guide for understanding reptile and amphibian hydroregulation and climate change impacts: doi.org/10.32942/X2J... #WCH10 #herpsci
- Reposted by Julián A. VelascoAfter 6 long years, lots of ups and downs, and being far from family, I’m defending my PhD thesis on May 6 at 12:00pm CT - just 16 days away! Still a bit to go, but wanted to share. De Puerto Tejada y Cali para el mundo.
- Reposted by Julián A. Velasco"The molecular evolutionary basis of species formation revisited"
- Reposted by Julián A. Velasco
Any international academic society hosting a meeting in the US in 2026 is making a very clear choice about what they think is important. - Reposted by Julián A. VelascoMarch 2025 was the second warmest March on record in the ERA5 dataset, only behind the record set last year (2024). This is despite weak La Nina conditions in the tropical Pacific. It was 1.6C above preindustrial levels, up slightly from February.
- Reposted by Julián A. VelascoHoy @argomezcano.bsky.social @hdezfdez.bsky.social y yo publicamos en @elpais.com sobre Elisabeth Vrba, la paleobióloga revolucionaria, que falleció el pasado mes de febrero #paleontología #evolución elpais.com/ciencia/2025...
- Reposted by Julián A. VelascoHey our paper is out on @ecography.bsky.social ! We provided new generation length estimates for the world's amphibians and reptiles! Many thanks to the sRedList WG @m-dimarco.bsky.social @lsantinieco.bsky.social and others!! nsojournals.onlinelibrary.wiley.com/doi/10.1111/...
- Reposted by Julián A. VelascoHow vulnerable are #amphibians to extreme heat? 🐸🌡️ Our paper in @nature.com shows that many amphibians are already overheating, and many more species will be impacted by climate warming globally. See the thread below for a digest 🧵 Link to the paper: doi.org/10.1038/s415... #Nature
- Reposted by Julián A. VelascoNew paper in @nature.com led by @patricepottier.bsky.social! We demonstrated global vulnerability of amphibians to warming, threatening 10% of >5,000 species examined. How did we do it? See thread🧵 Paper: www.nature.com/articles/s41...
- Reposted by Julián A. VelascoOne of the most common arguments you hear from fans of generative ‘AI’ is that it’s not plagiarizing people’s work, it’s just learning like a human learns. So I’m going to break down why that’s just not true, and why it can never be true, with the existing systems. 1/
- Reposted by Julián A. Velasco📢New paper!! 📢using #BioTIME #timeseries we showed that faster rates of #turnover in community composition were associated with faster rates of #temperature #change across biomes, for both cooling & warming + microclimate availability & human impacts modulate these responses go.nature.com/3WD7cWa
- Nature research paper: Warming and cooling catalyse widespread temporal turnover in biodiversity go.nature.com/3WD7cWa
- Reposted by Julián A. Velasco📢 Call for Papers! 📢 The Ecological Society of America & AGU just launched an exciting new joint-special collection focusing on the emerging field of ecological forecasting, which involves predicting the future states of #ecosystems. 🔗 buff.ly/4332KUs @ecologicalsociety.bsky.social
- Reposted by Julián A. Velasco📢Our new paper on alien vertebrates in the world's mountains is now out @naturecomms.bsky.social. Using data on 700+ spp across ~3,000 mountains we explore their distribution patterns,flows across realms, presence in protected areas, and the factors driving these trends. 🐟🐸🦎🦜🦝⛰️ 👉 rdcu.be/ebidu
- Reposted by Julián A. VelascoUnderstanding biological invasions through the lens of environmental niches www.cell.com/trends/ecolo...
- Este miércoles hablaremos de biodiversidad urbana en México y algunas de sus problemáticas. Esto sale de nuestro artículo publicado el año pasado: journals.plos.org/plosone/arti...
- Reposted by Julián A. VelascoPhD project alert! 🚨 I'm recruiting a PhD student to join my lab and the MacroSize network to investigate the trends, patterns, and processes driving intraspecific variation in fish body size in the Anthropocene. Exciting opportunity to explore ecological dynamics in a changing world! :) 🌎🐟🐠🐡
- Reposted by Julián A. VelascoExcited to share new preprint by PhD candidate Anna Rönnfeldt „Climatic niche conservatism in non-native plants depends on introduction history and biogeographic context“ highlighting context dependency in climate niche shifts of species introduced in multiple world regions doi.org/10.1101/2025...
