El grupo de Física Estadística de los Sistemas Complejos les invita al siguiente seminario (atención al cambio de fecha): - Ponente: Paula Villa. Okinawa Institute of Science and Technology. Biological Complexity Unit. - Título: Ocean currents promote rare species diversity in protists. - Abstract: Oceans host communities of plankton composed of a huge number of rare species that, as estimated in metagenomic studies, decay as a steep power law of their abundance. We propose that the way chaotic advection of oceanic currents limit protists dispersal is a key factor of such biodiversity pattern. We introduce a spatially explicit coalescence model able to reconstruct species ancestry and diversity in the presence of currents. Our model predicts a steep power law decay of the species abundance distribution and a steep increase of the number of observed species with sample size. Indeed, we find a significant correlation of the local finite-size Lyapunov exponents of our chaotic currents and the power law exponents of the species abundance distribution. Metagenomic studies of planktonic protist communities show excellent agreement with our results. - Fecha y hora: Viernes 9 de Octubre a las 12 horas. - Lugar: Laboratorio de Física Computacional, Planta baja del edificio de Física, Facultad de Ciencias. - Referencia: https://advances.sciencemag.org/content/6/29/eaaz9037 https://advances.sciencemag.org/content/6/29/eaaz9037 El seminario será presencial, hasta completar el aforo reducido del aula (10 personas). También se podrá seguir online desde el enlace: https://laplace.ugr.es/b/seminarios-materia https://laplace.ugr.es/b/seminarios-materia Atentamente, --------------------------------------------------------------------------------- Daniel Manzano Electromagnetism and Condensed Matter Department Institute “Carlos I” for Theoretical and Computational Physics University of Granada Facultad de Ciencias, Av. Fuentenueva s/n Granada 18071, Spain Phone: +34 958241000 Ext: 20569 http://ic1.ugr.es/manzano/ http://ic1.ugr.es/manzano/