{"ok":true,"nota":{"id":"8e051631dbc4012a","slug":"un-liquen-boreal-raro-tiene-dos-formas-distintas-y-una-historia-de-des-8e0516","titulo":"Un liquen boreal raro tiene dos formas distintas y una historia de desapariciones","resumen":"Revisaron la historia de descubrimientos, declives y reapariciones de un liquen del norte del planeta, el primer repaso en 124 años. Describieron dos formas morfológicas diferentes del organismo según la región donde vive.","fuente":"biorxiv","fuenteNombre":"bioRxiv · preprints","color":"#be2628","autor":"Arsenault, A., Baines, P.","url":"https://www.biorxiv.org/content/10.64898/2026.10.22.760986v1?rss=1","imagen":"/hoy/portada/8e051631dbc4012a","tema":"ciencia","subtemas":["liquenes","biodiversidad","historia natural","especies amenazadas","botanica"],"entidades":["Canadá","Noruega","Alaska","bioRxiv"],"formato":"dato","entretenimiento":false,"pubTs":"2026-10-23T00:00:00.000Z","indexTs":"2026-10-23T22:31:31.922Z","hash":"ff48893336ba12f7c7800028bae85251d3c1e992c9a902a3a06bcfa8d778f357","tsa":{"time":"Oct 23 22:31:55 2026 GMT","provider":"freetsa.org","sobre":"sello"},"stats":{"views":0,"likes":0,"clicks":0,"dwell":0},"tipo":"normal","registro":"hallazgo","porQueImporta":"El liquen aparece y desaparece en distintas zonas del hemisferio norte, y ahora se sabe que no es una sola forma sino dos, con diferencias visibles. Para quien no sigue la biología, es un recordatorio de que muchas especies poco conocidas pueden estar desapareciendo sin que nadie lo note. Los liquenes además indican la calidad del aire, así que su pérdida dice algo del ambiente. Es un trabajo de historia natural y no tiene impacto directo en la vida cotidiana de la Argentina.","quienFirma":"bioRxiv (preprint; institución principal no identificada en la descripción)","confianza":"preprint","consulta":null},"sello":{"hash":"ff48893336ba12f7c7800028bae85251d3c1e992c9a902a3a06bcfa8d778f357","sello":"b9f1f8ad22af593cc66fe0d310c9780bdfcc64331bf4a7c01c501106df2982f1","beacon":{"drand":{"cadena":"8990e7a9aaed2ffed73dbd7092123d6f289930540d7651336225dc172e51b2ce","ronda":6578789,"aleatorio":"e3f8107d9895815bfd4cf7c8c0c58e563c54c18a406b9fd9519633dee417b54a","tiempo":"2026-10-23T22:31:30.000Z"},"nist":{"cadena":2,"pulso":1996588,"salida":"1AB33E4D4D8827C21F7F3557C5995F2A7803790AA889B11FBC3E8A1AAE593D51C4D6AF8D679624359D1D1868187DF78129DBF70BD659B8A94EB4847855F1EB6E","tiempo":"2026-10-23T22:31:00.000Z"},"noAntes":"2026-10-23T22:31:30.000Z"},"verificacion":{"drand":true,"nist":true},"tsa":{"time":"Oct 23 22:31:55 2026 GMT","provider":"freetsa.org","sobre":"sello"},"original":{"titulo":"A note on the history, morphology, and distribution ecology of the boreal felt lichen, Erioderma pedicellatum (Hue) in the northern hemisphere.","descripcion":"The complex history of discovery, population declines, extinctions, and rediscoveries of the boreal felt lichen in the northern hemisphere is examined here for the first time in 124 years following its detection in Canada. We also present evidence of the presence of two distinct morphological forms of the boreal felt lichen. The southern form is in Atlantic Canada and is characterized by a darker, hairless exciple, shorter spores, and a pruina. The northern form occurs in Norway, Alaska, Kamchatka, Quebec, Labrador and northwestern Newfoundland. Although the morphology of the northern form seems identical across North America, Europe, and Asia, the community ecology for patterns for the lich","pubDate":"2026-10-23","url":"https://www.biorxiv.org/content/10.64898/2026.10.22.760986v1?rss=1"},"indexado":"2026-10-23T22:31:31.922Z"}}