Manuel Hernández Fernández
@hdezfdez.bsky.social
Paleobiólogo, profesor en la UCM e investigador en el CSIC; interesado en los cambios climáticos y la evolución de las faunas de vertebrados cenozoicos
Lower speciation, not higher extinction, drove African megaherbivore diversity collapse doi.org/10.1038/s414... by @singerstone.bsky.social et al.
Evidence of seasonality shift during the late Miocene at the central basins of Spain (southwestern Europe) doi.org/10.1016/j.pa... by @dasanz.bsky.social et al.
The paper is open access and available here: fr.pensoft.net/article/1891...
Formation processes of Late Miocene Hipparion Red Clay vertebrate assemblages from northern China: taphonomic constraints on palaeoecological and biochronological interpretations
Hipparion Red Clay of northern China represents one of the most crucial terrestrial mammal records of the Eurasian Neogene. Despite their long-standing relevance to biostratigraphy and palaeoecology, ...
fr.pensoft.net
Very happy to share our new paper on the taphonomy and site formation processes of Late Miocene 𝐻𝑖𝑝𝑝𝑎𝑟𝑖𝑜𝑛 Red Clay vertebrate sites from China. Before using these assemblages for palaeoecology or biochronology, we ask a basic but crucial question: how did they form?
Regions rich in biome specialists (e.g., Southeast Asia) show phylogenetically clustered faunas, reflecting past bursts of speciation. Meanwhile, recent radiations are linked to Pleistocene climate shifts and large-scale dispersal events.
New #AmniotaLab research! Squirrels 🐿️ include more biome specialists than expected by chance, supporting 𝗩𝗿𝗯𝗮’𝘀 𝗿𝗲𝘀𝗼𝘂𝗿𝗰𝗲-𝘂𝘀𝗲 𝗵𝘆𝗽𝗼𝘁𝗵𝗲𝘀𝗶𝘀: species restricted to a single biome speciate faster when climatic change fragments habitats. 👇 #OA
Biome Specialisation in Squirrels: Phylogenetic and Geographic Patterns
Aim Habitat breadth shapes species' responses to environmental change and influences large-scale biodiversity patterns. According to Vrba's resource-use hypothesis, biome specialists (inhabiting a s...
onlinelibrary.wiley.com
#Efeméride La paleontóloga Nieves López Martínez (1949-2010) nació un 5 de febrero. Fue una de las responsables de la modernización de los estudios paleontológicos en España.
Nieves López Martínez, paleontóloga - Mujeres con ciencia
Nieves López Martínez. Paleontología. Registro fósil de vertebrados. Estudios paleontológicos en España. Estudio de la evolución de los lagomorfos del Cenozoico. Eventos bióticos y ambientales. Extinción masiva del Cretácico-Terciario en la zona de los Pirineos.
mujeresconciencia.com
Representación de las mujeres en geología y paleontología en libros de divulgación científica: una mirada crítica a los sesgos de disciplina, lengua y origen geográfico paleontologiamexicana.geologia.unam.mx/index.php/pa...
A fascinating analysis by Ana Valenzuela-Toro Mariana Viglino, and (another Otago labmate) Carolina Loch analyzed marine mammal paleontology publication metrics in Latin America and quantified just how much women, and latin americans are underrepresented on author lists & under-cited (it's a lot).
¿Por qué hay tantas especies de ardillas y por qué no están repartidas de forma uniforme por el planeta? ucm.es/especies-ard... sobre doi.org/10.1111/jbi....
1️⃣ Not all squirrels are generalists. Many species are biome specialists, restricted to a single habitat (rainforest, steppe, etc.)
2️⃣ According to the resource-use hypothesis (Elisabeth Vrba), specialists should generate more species during climate change, because their populations fragment more easily. 👉 But does this actually happen in nature? We tested it using squirrels.
3️⃣ 📊 The key result: 👉 There are far more specialist squirrels than expected by chance. This supports the idea that specialization is not (only) an evolutionary dead end.
4️⃣ 🌱 But not all biomes behave the same. Tropical rainforests and steppes host more specialists than expected. Deserts and tundra do not (partly because they host very few species).
5️⃣ 🗺️ Where are the main hotspots? Southeast Asia — especially Borneo — stands out with extremely high species richness… and most species there are endemic specialists.
6️⃣ 🌳 Interestingly, these species-rich regions show low phylogenetic diversity: many species, but closely related 👉 a signal of rapid past speciation.
8️⃣ 🚨 Conservation message: Regions like the Sunda Shelf are top priorities: ✔️ Many specialists ✔️ High endemism ✔️ High sensitivity to climate change
9️⃣ 📄 Open-access paper in Journal of Biogeography: “Biome Specialisation in Squirrels: Phylogenetic and Geographic Patterns” 👉 doi.org/10.1111/jbi.... 🐿️🌍 If you’re interested in how climate, evolution, and biodiversity connect… this paper is for you.
Biome Specialisation in Squirrels: Phylogenetic and Geographic Patterns
Aim Habitat breadth shapes species' responses to environmental change and influences large-scale biodiversity patterns. According to Vrba's resource-use hypothesis, biome specialists (inhabiting a s.....
doi.org
Biome specialization in squirrels: phylogenetic and geographic patterns doi.org/10.1111/jbi.... by @paleoiris.bsky.social et al.
Do marine mammals diversify more slowly than non-marine mammals? doi.org/10.1111/jbi....
Do Marine Mammals Diversify More Slowly Than Non‐Marine Mammals?
Aim Species richness is generally lower in marine than in terrestrial ecosystems, but the reasons behind this disparity remain unclear. This study examines whether marine mammals diversify at a slow...
doi.org
Agradecemos a @sepaleontologia.bsky.social la noticia sobre nuestro último trabajo en paleoclimatología del Cuaternario, publicado en doi.org/10.5194/cp-2...
Late Pleistocene temperature patterns in the Western Palearctic: insights from rodent associations compared with general circulation models
Abstract. Since rodent fossils are preserved in many low- and high-latitude archaeological and paleontological sites from a wide variety of environments, their associations are a commonly useful proxy...
doi.org
SEPaleontologia@sepaleontologia.bsky.social · 7mo ago¡Nueva publicación de soci@s! 🗣️ Un estudio reciente demuestra cómo los fósiles de roedores 🐭 pueden ayudarnos a reconstruir el clima del pasado ❄️ Más👇 https://sepaleontologia.es/portfolio-item/pequenos-roedores-grandes-revelaciones/ #SEPsocios #Paleoclima #CambioClimático @hdezfdez.bsky.social
Agradecemos a @sepaleontologia.bsky.social la noticia sobre nuestro último trabajo "a la sombra de los Andes" en doi.org/10.1111/1749...
Body Size Regulates Niche Overlap Asymmetry in the Subtropical Andes Rain Shadow: Isotopic Paleoecology of Oligocene South American Ungulates
This study provides the first isotopic analysis of Oligocene mammals from Quebrada Fiera, Mendoza, Argentina, filling a major gap in South American paleontology. It reveals a latitudinal gradient in ....
doi.org
SEPaleontologia@sepaleontologia.bsky.social · 8mo ago🌄 Hace 25 millones de años, la sombra de lluvia de los Andes ya moldeaba los #ecosistemas sudamericanos. Un estudio isotópico liderado por @dasanz.bsky.social nos lo revela Más 👇
¡Nueva publicación de soci@s! 🗣️ Un nuevo estudio liderado por @fernandoblancos.bsky.social explora cómo los cambios ambientales impactaron en los grandes #mamíferos y sus ecosistemas durante el Neógeno 🐘🌍 👉 Léelo aquí: https://sepaleontologia.es/?p=1423 #SEPsocios #Paleontología #CambioClimático
60 millones de años en movimiento: cómo los cambios ambientales transformaron a los mayores herbívoros del planeta—y cómo sus ecosistemas resistieron - sepaleontologia
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sepaleontologia.es
¡Nueva publicación de soci@s! 🗣️ Una investigación liderada por @nebreda.bsky.social sugiere que la evolución del vuelo en dinosaurios 🦅 ya estaba condicionada desde el embrión. 👉 Descúbrela aquí: https://sepaleontologia.es/portfolio-item/macroevolucion-y-embriologia/ #SEPsocios #Dinosaurios #Aves
La huella evolutiva que los dinosaurios no avianos dejaron a las aves: una historia de extremidades, macroevolución y embriología - sepaleontologia
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sepaleontologia.es
Great new paper on the evolution of birds - showing how changes in forelimbs (becoming wings) and legs were linked together. I LOVE research like this which reveals the secrets of how evolution works - how development, genetics, form are all joined up: royalsocietypublishing.org/doi/10.1098/...
Macroevolutionary integration underlies limb modularity in the origin of avian flight | Biology Letters
The origin of flight in avian dinosaurs has been historically an ideal framework for proposing the evolutionary relationship between form and function in limb proportions under the hypothesis of speci...
royalsocietypublishing.org
Hoy en Madrid hay huelga en defensa de la Universidad pública/ today in Madrid we go on strike to defend public univerities ("Today I wake up and strike", writing on a wall, Bologna, some years ago)
Body size regulates niche overlap asymmetry in the subtropical Andes rain shadow: Isotopic paleoecology of Oligocene South American ungulates onlinelibrary.wiley.com/doi/10.1111/... by @dasanz.bsky.social et al.
Body Size Regulates Niche Overlap Asymmetry in the Subtropical Andes Rain Shadow: Isotopic Paleoecology of Oligocene South American Ungulates
This study provides the first isotopic analysis of Oligocene mammals from Quebrada Fiera, Mendoza, Argentina, filling a major gap in South American paleontology. It reveals a latitudinal gradient in ....
onlinelibrary.wiley.com
Late Pleistocene temperature patterns in the Western Palearctic: insights from rodent associations compared with general circulation models cp.copernicus.org/articles/21/...
Late Pleistocene temperature patterns in the Western Palearctic: insights from rodent associations compared with general circulation models
Abstract. Since rodent fossils are preserved in many low- and high-latitude archaeological and paleontological sites from a wide variety of environments, their associations are a commonly useful proxy...
cp.copernicus.org