Luisa Saavedra

Ocean acidification (OA) is one of the main consequences of increasing atmospheric carbon dioxide (CO 2), impacting key biological processes of marine organisms such as development, growth and immune response. However, there are scarce studies on the influence of OA on marine invertebrates' ability to cope with pathogens. This study evaluated the s...

Coastal ecosystems are exposed to changes in physical-chemical properties, such as those occurring in upwelling and freshwater-influenced areas. In these areas, inorganic carbon can influence seawater properties that may affect organisms and populations inhabiting benthic habitats such as the intertidal mussel Perumytilus purpuratus. Feeding and me...

Estuarine ecosystems are characterized by a wide physical-chemical variation that in the context of global change scenarios may be exacerbated in the future. The fitness of resident organisms is expected to be influenced by such variation and, hence, its study is a priority. Some of that variation relates to water vertical stratification, which may...

The increasing shellfish aquaculture requires knowledge about nearshore environmental variability to manage sustainably and create climate change adaptation strategies. We used data from mooring time series and in situ sampling to characterize oceanographic and carbonate system variability in three bivalve aquaculture areas located along a latitudi...

Comprehending the potential effects of environmental variability on bivalves aquaculture becomes crucial for its sustainability under climate change scenarios, specially in the Humboldt Current System (HCS) where upwelling intensification leading to frequent hypoxia and acidification is expected. In a year-long study, Pacific oysters (Magallana gig...

El presente estudio tiene como objetivo entregar una revisión general del funcionamiento y aplicación de las desalinizadoras, analizando sus, ventajas y desventajas, con un especial enfoque en los efectos sobre los ecosistemas y el paisaje costero. Diversos países de Latinoamérica y el Caribe cuentan con este tipo de plantas, sin embargo, el caso d...

El presente manual tiene como objetivo entregar las bases científicas y técnicas para diseñar e implementar un sistema de monitoreo ambiental participativo en caletas pesqueras de Chile, como herramienta para mejorar la adaptación al cambio climático. Este tipo de monitoreo se caracteriza por la participación activa de mujeres y hombres de la pesca...

Únicamente tenemos un solo océano, cubre el 72 % de la superficie terrestre y es esencial para la humanidad. El océano ha permitido que la Tierra sea un planeta habitable y los beneficios que nos brinda en nuestro día a día son numerosos. Sin duda, su rol en el ámbito socioeconómico, climático y ambiental, incluso en zonas alejadas del mar, lo hace...

The Humboldt Current System (HCS), off the coast of Chile, has an Oxygen Minimum Zone (OMZ) between 30 and 250 m depth, with oxygen concentrations < 0.5 ml L-1. Densities of Merluccius gayi gayi associated with this zone are highest between 100 and 300 m depth, suggesting metabolic adaptations allowing it to remain in the OMZ. The aerobic and anaer...

The aerobic and anaerobic enzymatic activity of two important commercial bathypelagic species living in the Juan Fernández seamounts was analyzed: alfonsino (Beryx splendens) and orange roughy (Hoplostethus atlanticus). These seamounts are influenced by the presence of an oxygen minimum zone (OMZ) located between 160 and 250 m depth. Both species h...

Phytosterols are potential endocrine-disrupting compounds. Quantification of phytosterols was carried out in sediments from four coastal zones and two rivers in south-central Chile. Sterol concentrations were determined by capillary gas chromatography-mass spectrometry and the sources of sedimentary organic matter were determined using sterol ratio...

Phytosterols are potential endocrine-disrupting compounds. Quantification of phytosterols was carried out in sediments from four coastal zones and two rivers in south-central Chile. Sterol concentrations were determined by capillary gas chromatography-mass spectrometry and the sources of sedimentary organic matter were determined using sterol ratio...

The mussel Aulacomya ater was exposed to 17β-estradiol (E2) (0, 1, 100 μg L-1) for 21 days with 4 sampling periods to evaluate how these organisms deal with exogenous estrogenic compounds. In addition, 2 concentrations of 17β-estradiol (0.5, 1 mmol) were injected into the abductor muscle of 5 individuals. The effects of E2 were determined by measur...