{"ok":true,"nota":{"id":"d77635e028afb300","slug":"el-exceso-de-dioxido-de-carbono-en-el-mar-hace-que-dos-corales-del-car-d77635","titulo":"El exceso de dióxido de carbono en el mar hace que dos corales del Caribe fabriquen más oxígeno pero también s","resumen":"Expusieron dos especies de coral del Caribe a niveles de CO2 más altos que los actuales en colonias recolectadas en Panamá. Midieron la fotosíntesis, el daño oxidativo y las defensas antioxidantes. Encontraron respuestas distintas en cada especie.","fuente":"biorxiv","fuenteNombre":"bioRxiv · preprints","color":"#be2628","autor":"Tresguerres, M., Sabatini, S. E., Linsmayer, L. B., Galindo-Martinez, C. T., Thies, A., Hamilton, T. J., Kline, D. I.","url":"https://www.biorxiv.org/content/10.64898/2026.10.16.759725v1?rss=1","imagen":"/hoy/portada/d77635e028afb300","tema":"ciencia","subtemas":["arrecifes de coral","acidificación del océano","cambio climático","fotosíntesis","caribe"],"entidades":["bioRxiv","Bocas del Toro","Panamá","Porites astreoides","Orbicella franksi"],"formato":"dato","entretenimiento":false,"pubTs":"2026-10-22T00:00:00.000Z","indexTs":"2026-10-22T23:19:43.636Z","hash":"ac7b16684070047b8c441796091891cdea1c1546149019d30860f2f6591c29da","tsa":{"time":"Oct 22 23:20:45 2026 GMT","provider":"freetsa.org","sobre":"sello"},"stats":{"views":0,"likes":0,"clicks":0,"dwell":0},"tipo":"normal","registro":"hallazgo","porQueImporta":"Los arrecifes del Caribe ya están muy golpeados, y el aumento de CO2 en el mar, que viene de las emisiones de todos, afecta su equilibrio interno. Que cada especie reaccione de forma diferente significa que algunas podrían aguantar mejor que otras, y eso cambia qué arrecifes quedarán en pie. Lo que el estudio no resuelve es si ese margen alcanza para sostenerlos a largo plazo.","quienFirma":"Preprint en bioRxiv (investigación sobre corales en Bocas del Toro, Panamá)","confianza":"preprint","consulta":null},"sello":{"hash":"ac7b16684070047b8c441796091891cdea1c1546149019d30860f2f6591c29da","sello":"301b823b33b634c67893bc26558a661786f75ba475a19b0cbb4ff093f65bdbbd","beacon":{"drand":{"cadena":"8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce","ronda":6576007,"aleatorio":"95dbaf32f50651e333ceec71d41e8fb48fb5366fda7d20abcbc7ea91ece96f50","tiempo":"2026-10-22T23:20:30.000Z"},"nist":{"cadena":2,"pulso":1995203,"salida":"8A13BF41CC085A093FFEA64CBB7EB887732A2613A6D9655D0453147066A38EB79E9EC218F3D2AC07553BF1FD20E0E18DC3AD27C19DD5DB9E691AB8B8E2BD47D3","tiempo":"2026-10-22T23:20:00.000Z"},"noAntes":"2026-10-22T23:20:30.000Z"},"verificacion":{"drand":true,"nist":true},"tsa":{"time":"Oct 22 23:20:45 2026 GMT","provider":"freetsa.org","sobre":"sello"},"original":{"titulo":"Elevated environmental CO2 stimulates photosynthesis and induces differential oxidative responses in two Caribbean reef-building coral species","descripcion":"Reef-building corals maintain intracellular photosymbiosis with dinoflagellate algae, allowing them to use photosynthetic products as metabolic fuel. Carbon dioxide (CO2) is a key substrate for photosynthesis, but its rapid increase in the global ocean due to anthropogenic emissions (known as ocean acidification) may disrupt coral symbiosis. We examined the effects of elevated CO2 on photosynthetic O2 production, oxidative damage, and antioxidant systems in the Caribbean reef-building corals Porites astreoides and Orbicella franksi. Coral colonies collected at 3m depth in Bocas del Toro (Panama) were exposed to control (390 {micro}atm CO2, pH ~8.00) or elevated CO2 ({approx}1,060 {micro}atm ","pubDate":"2026-10-22","url":"https://www.biorxiv.org/content/10.64898/2026.10.16.759725v1?rss=1"},"indexado":"2026-10-22T23:19:43.636Z"}}