Examinando por Autor "Molina, V."

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  • Miniatura
    Ítem
    Socio-community inclusion and collective occupations: Dialogues between the institutional world and that of organizations of people with psychosocial disabilities
    (Universidade Federal de Sao Carlos, 2022) Angulo, R.; Molina, V.; Carrasco, C.
    The article analyzes socio-community inclusion practices of groups of people with psychosocial disabilities, generated in doing and feeling in their collective occupations, from the dialogues that take place with social institutions. A qualitative methodology was used, with a critical approach. The information was collected through discussion groups, which made it possible to collect speeches from the participants of two groups of people with mental disabilities, corresponding to the communes of Penco and Concepción, in the Biobío Region (Chile); discourses that were coded, analyzed, categorized and interpreted. Among the most relevant results obtained, differences and tensions are evident in the ways of understanding and proceeding towards inclusion, since institutions tend to maintain hierarchical relationships, while groups tend to have more democratic and participatory practices. Regarding the conclusions, it is possible to visualize that the human rights of people with mental disabilities are materialized in a field of collective occupations, daily actions in everyday contexts, and social conflict.
  • Miniatura
    Ítem
    Spatiotemporal Distribution of Key Pelagic Microbes in a Seasonal Oxygen-Deficient Coastal Upwelling System of the Eastern South Pacific Ocean
    (Frontiers Media S.A., 2020-09) Molina, V.; Belmar, L.; Levipan, H.A.; Ramirez-Flandes, S.; Anguita, C.; Galan, A.; Montes, I.; Ulloa, O.
    The strong seasonal variability in physical-chemical conditions of the Eastern South Pacific Ocean creates an ideal setting to study spatiotemporal distribution of key marine microbial communities. We herein report a nearly 4-year-long time series of the variability in amoA gene counts of ammonia oxidizing archaea (AOA) and bacteria (betaproteobacteria, bAOB) by quantitative PCR, GI.1a Thaumarchaeota and MG-II Euryarchaeota by CARD-FISH, and the picoplanktonic community by flow cytometry for this area. During spring-summer, non-photosynthetic picoplankton such as MG-II Euryarchaeota and GI.1a Thaumarchaeota peaked at the surface and deeper waters, respectively. General AOA and bAOB achieved higher abundances at the oxycline mainly in summer (up to 105–104 amoA copies mL–1). Generalized additive models for location, scale, and shape (GAMLSS) indicated that season and depth account for 19–46% of variations in the abundance of the groups studied, particularly GI.1a Thaumarchaeota and AOA. The oxygen and nitrite concentration were statistically meaningful predictors for the studied groups. GAMLSS models indicate that ammonia oxidizing assemblage’s variability is coupled with ammonia, nitrite, and nitrate variations. Our results indicate that microbial abundances fluctuation is associated with upwelling variability and oxygen-deficient water conditions that shape the substrates availability and metabolic response of marine microbes, including keystone ammonia oxidizing assemblages and their ecological interactions. Overall, our results support planktonic nitrification activity and its contribution to nitrous oxide excess production in the time series off Concepción and the ecological dynamics regarding AOA and bAOB in coastal waters. © Copyright © 2020 Molina, Belmar, Levipan, Ramírez-Flandes, Anguita, Galán, Montes and Ulloa.