Publications by authors named "V Pena"

Environmental measurements of Radon and its progeny were carried out in a gold mining area in the department of Antioquia, Colombia. Radon concentration measurements were carried out during 2 y in seven different measurement points in three types of geological zones, by using EPERM electret chambers and DOSEman Pro detectors at each point. Radon concentration values between 858 ± 59 Bq m-3 and 2469 ± 158 Bq m-3 and an equilibrium factor between 0.

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Importance: Recent evolutions in clinical care and remote monitoring suggest that some acute illnesses no longer require intravenous therapy and inpatient hospitalization.

Objective: To describe outcomes of patients receiving care in a new, outpatient, virtual, home-based acute care model called Safer@Home.

Design, Setting, And Participants: This retrospective cohort analysis, conducted from September 1, 2022, through August 31, 2023, included 2466 patients treated at a safety net hospital in Los Angeles County for 10 core illnesses and 24 other acute illnesses for which patients are commonly hospitalized.

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Current evidence suggests that macroalgal-dominated habitats are important contributors to the oceanic carbon cycle, though the role of those formed by calcifiers remains controversial. Globally distributed coralline algal beds, built by pink coloured rhodoliths and maerl, cover extensive coastal shelf areas of the planet, but scarce information on their productivity, net carbon flux dynamics and carbonate deposits hampers assessing their contribution to the overall oceanic carbon cycle. Here, our data, covering large bathymetrical (2-51 m) and geographical ranges (53°N-27°S), show that coralline algal beds are highly productive habitats that can express substantial carbon uptake rates (28-1347 g C m day), which vary in function of light availability and species composition and exceed reported estimates for other major macroalgal habitats.

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Article Synopsis
  • * They act as foundation species, creating "facilitation cascades" that help mitigate physical stress, reduce predator impacts, and improve resource availability for other species, which leads to complex and supportive community structures.
  • * Key research gaps include understanding how rhodoliths function as facilitators, the stability of these interactions over time, how species dynamics change in different environments, and their potential as climate refuges, which is essential for shaping effective marine conservation policies.
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