{"ok":true,"nota":{"id":"5721a6d38217b6e8","slug":"la-cantidad-de-biodiversidad-marina-fosil-dependeria-mas-de-cuantas-ro-5721a6","titulo":"La cantidad de biodiversidad marina fósil dependería más de cuántas rocas se conservaron que de causas biológi","resumen":"Compilaron datos globales de biodiversidad marina y de rocas sedimentarias de los últimos 540 millones de años. Usaron un método estadístico causal para separar qué factores explican la variación.","fuente":"biorxiv","fuenteNombre":"bioRxiv · preprints","color":"#be2628","autor":"Rojas, A., Mathes, G., Futschik, A.","url":"https://www.biorxiv.org/content/10.64898/2026.10.22.761025v1?rss=1","imagen":"/hoy/portada/5721a6d38217b6e8","tema":"ciencia","subtemas":["paleontologia","biodiversidad","fosiles","extinciones","estratigrafia"],"entidades":["Fanerozoico"],"formato":"dato","entretenimiento":false,"pubTs":"2026-10-25T00:00:00.000Z","indexTs":"2026-10-25T13:26:04.362Z","hash":"3029d0bae842a7d7d42228f11ecc29c6aa411df90ccc834043b64dd4d3e94a7c","tsa":{"time":"Oct 25 13:26:57 2026 GMT","provider":"freetsa.org","sobre":"sello"},"stats":{"views":0,"likes":0,"clicks":0,"dwell":0},"tipo":"normal","registro":"hallazgo","porQueImporta":"Los registros de fósiles marinos suben y bajan junto con la cantidad de roca disponible, y eso puede engañarnos sobre cuántas especies hubo de verdad. Si buena parte de la curva refleja cuánto se conservó, las conclusiones sobre extinciones y explosiones de vida deben revisarse. Para quien lee la historia de la Tierra como una línea firme, es un recordatorio de que la evidencia también tiene sesgos. Conviene desconfiar de los gráficos que parecen demasiado limpios.","quienFirma":"bioRxiv (preprint; institución principal no identificada en el resumen)","confianza":"preprint","consulta":null},"sello":{"hash":"3029d0bae842a7d7d42228f11ecc29c6aa411df90ccc834043b64dd4d3e94a7c","sello":"eed4edbc22fc67dc96d3685ddedccd1e9a0b25b188bc69818dc8f3be02139db1","beacon":{"drand":{"cadena":"8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce","ronda":6583459,"aleatorio":"0a139b88186ff9ac4061b9ae2a2fd60d7a03c380f08f96a5b763a564cd5f8535","tiempo":"2026-10-25T13:26:30.000Z"},"nist":{"cadena":2,"pulso":1998923,"salida":"CAACCBC90B253254A2BA37D2F2DAD32D412D022A909309D40D4961AE24D8236EAD656C06ED2DE2604FB73EFC57434602CEDA74C12D692B1DB5605BA381C0ED58","tiempo":"2026-10-25T13:26:00.000Z"},"noAntes":"2026-10-25T13:26:30.000Z"},"verificacion":{"drand":true,"nist":true},"tsa":{"time":"Oct 25 13:26:57 2026 GMT","provider":"freetsa.org","sobre":"sello"},"original":{"titulo":"Causal analysis of rock-biodiversity relationships over the global Phanerozoic challenges rock record bias and common cause hypothesis","descripcion":"Sampled marine biodiversity covaries strongly with sedimentary rock quantity over the Phanerozoic, but the respective contributions of different potential causes remain unsettled. Although regional studies show that rock-record bias accounts for more variation in sampled marine biodiversity than common-cause mechanisms, evaluating this relationship across the global Phanerozoic record remains difficult because fossil databases are inherently biased toward fossiliferous strata. To address this limitation, we compiled literature-derived measures of global marine biodiversity and sedimentary strata, along with an existing sea-level curve. Using an information-theoretic causal framework, we then","pubDate":"2026-10-25","url":"https://www.biorxiv.org/content/10.64898/2026.10.22.761025v1?rss=1"},"indexado":"2026-10-25T13:26:04.362Z"}}