5 research outputs found
Mejora de la competencia científica y la resolución de problemas en la formación inicial on-line de futuros maestros a través de la creación de materiales digitales y píldoras audiovisuales
Memoria ID-018 Ayudas de la Universidad de Salamanca para la innovación docente, curso 2020-2021
Concienciación de los futuros maestros sobre las supersticiones, las pseudociencias y sus consecuencias
Memoria ID-193. Ayudas de la Universidad de Salamanca para la innovación docente, curso 2019-2020
Full annual monitoring of Subantarctic Emiliania huxleyi populations reveals highly calcified morphotypes in high-CO2 winter conditions [Dataset]
[EN]Supplement Table S1. a. Sampling dates and morphotype relative abundance of E. huxleyi coccolith assemblages collected in the surface layer at the SOTS site. b. Sampling intervals, fluxes and morphotype relative abundance and morphometric measurements of E. huxleyi coccolith assemblages intercepted by the sediment traps at the SOTS and SAM sites.
Table S2. Environmental parameters measured at the surface layer of the SOTS site from
August 2011 to July 2012.European Union's Horizon 2020, Marie Skłodowska-Curie Individual fellowshipThe dataset includes Supplementary Information, Table S1. : abundance, composition and morphometric data of E. huxleyi coccolith assemblages generated during the current study
Table S2: environmental data Environmental parameters measured at the surface layer of the SOTS site from
August 2011 to July 2012
Full annual monitoring of Subantarctic Emiliania huxleyi populations reveals highly calcified morphotypes in high-CO2 winter conditions
Datos de investigación en: http://hdl.handle.net/10366/143074[EN]Ocean acidifcation is expected to have detrimental consequences for the most abundant calcifying
phytoplankton species Emiliania huxleyi. However, this assumption is mainly based on laboratory
manipulations that are unable to reproduce the complexity of natural ecosystems. Here, E. huxleyi
coccolith assemblages collected over a year by an autonomous water sampler and sediment traps in the
Subantarctic Zone were analysed. The combination of taxonomic and morphometric analyses together
with in situ measurements of surface-water properties allowed us to monitor, with unprecedented
detail, the seasonal cycle of E. huxleyi at two Subantarctic stations. E. huxleyi subantarctic assemblages
were composed of a mixture of, at least, four diferent morphotypes. Heavier morphotypes exhibited
their maximum relative abundances during winter, coinciding with peak annual TCO2 and nutrient
concentrations, while lighter morphotypes dominated during summer, coinciding with lowest TCO2
and nutrients levels. The similar seasonality observed in both time-series suggests that it may be a
circumpolar feature of the Subantarctic zone. Our results challenge the view that ocean acidifcation
will necessarily lead to a replacement of heavily-calcifed coccolithophores by lightly-calcifed ones in
subpolar ecosystems, and emphasize the need to consider the cumulative efect of multiple stressors on
the probable succession of morphotypes.European Union's Horizon 2020, Marie Skłodowska-Curie Individual fellowshi
Evolución paleoceanográfica del Oceáno Austral (sectores subantárticos del Atlántico y Pacífico) durante el Plioceno tardio-Pleistoceno
[ES] Esta tesis examina el registro de nanofósiles calcáreos de los testigos 1090 (Atlántico Sur) y 1172 (Pacífico Sur) del Ocean Drilling Program (ODP) durante el Plio-Pleistoceno (3.5-1.8 Ma). Los nanofósiles calcáreos (cocolitofóridos) son una excelente herramienta para monitorizar las condiciones de las aguas superficiales del Océano Sur dado que son sensibles a diferentes factores ambientales como la luz, temperatura y concentración de nutrientes. Los registros de nanofósiles han sido comparados con los isótopos bentónicos para reconstruir los cambios paleoceanográfi cos del Océano Sur durante el intervalo de estudio.[EN] This thesis examines the record of calcareous nannofossils witnesses 1090 (South Atlantic) and 1172 (South Pacific) from Ocean Drilling Program (ODP) during the Plio-Pleistocene (3.5-1.8 Ma). The calcareous nannofossils (coccolithophores) are an excellent tool to monitor the conditions of the Southern Ocean surface waters because they are sensitive to different environmental factors such as light, temperature and nutrient concentration. Nannofossils records have been compared with the benthic isotope paleoceanography to reconstruct changes cos Southern Ocean during the study interval