Browsing A) Producción científica UCSC by Author "Galán, Alexander"

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  • A source of isotopically light organic carbon in a low-pH anoxic marine zone 

    Vargas, Cristián A.; Cantarero, Sebastián I.; Sepúlveda, Julio; Galán, Alexander; De Pol-Holz, Ricardo; Walker, Brett; Schneider, Wolfgang; Farías, Laura; Cornejo D’Ottone, Marcela; Walker, Jennifer; Xu, Xiaomei; Salisbury, Joe (2021)
    Geochemical and stable isotope measurements in the anoxic marine zone (AMZ) off northern Chile during periods of contrasting oceanographic conditions indicate that microbial processes mediating sulfur and nitrogen cycling ...

  • Argo float reveals biogeochemical characteristics along the freshwater gradient off Western Patagonia 

    Galán, Alexander; Saldías, Gonzalo S.; Corredor Acosta, Andrea; Muñoz, Richard; Lara Peña, Carlos; Iriarte, José Luis (2021-07)
    The coastal region off Chilean Patagonia has been poorly studied due to the lack of available observations. Here we analyzed, by the very first time, biogeochemical (BGC) data to elucidate the role that biological and ...

  • Climatic regulation of vegetation phenology in protected areas along Western South America 

    Lara Peña, Carlos; Saldías, Gonzalo S.; Cazelles, Bernard; Rivadeneira, Marcelo M.; Muñoz, Richard; Galán, Alexander; Paredes, Álvaro L.; Fierro, Pablo; Broitman, Bernardo R. (2021)
    Using 19 years of remotely sensed Enhanced Vegetation Index (EVI), we examined the effects of climatic variability on terrestrial vegetation of six protected areas along southwestern South America, from the semiarid edge ...

  • The role of upwelling intermittence in the development of hypoxia and nitrogen loss over the Oregon shelf 

    Galán, Alexander; Zirbel, Marnie Jo; Saldías, Gonzalo S.; Chan, Francis; Letelier, Ricardo (2020-07)
    Coastal upwelling regions represent less than 2% of the marine biosphere's volume. Nonetheless, local biogeochemical processes have a considerable impact on the structure and functioning of the global oceans. In this study ...