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Publications (20)
Arbuscular mycorrhizal and dark septate fungi are common plant symbionts, but their role in promoting host plant fitness depends on environmental variables. Particularly in wetland plants, these associations are less understood. We analysed the role of arbuscular mycorrhizal fungi (AMF) and dark septate fungi (DSF) in the roots of Potentilla anseri...
Litter colonisation by fungi and bacteria is essential for decomposition. Although algae are not directly related to the decomposition process, in lentic environment, they usually colonise leaf litter rapidly and stimulate the activity of heterotrophs. We hypothesised that the timing of litter entering the water determines a rapid colonisation by a...
Los lagos proveen diferentes servicios ecosistémicos, incluyendo aquellos relacionados con los
asentamientos urbanos, el turismo y la recreación. Estas actividades alteran de distintas maneras las costas
y las zonas litorales de los lagos. El lago Nahuel Huapi, localizado en el norte de la Patagonia argentina, es
profundo, de origen glaciar y en su...
Introducción y objetivos
: Los humedales son ecosistemas naturales relevantes para la biodiversidad y aseguran una variedad de servicios ecosistémicos. Sin embargo, son ambientes susceptibles a las invasiones de especies. La especie introducida e invasora Potentilla anserina se encontró en humedales de la Patagonia. Los objetivos de este estudio fu...
Littoral zones of lakes are important for carbon and nutrient recycling because of the accumulation and decomposition of organic matter (OM) coming from terrestrial and aquatic plants. Here, we aimed to study OM decomposition from the most abundant riparian trees (Nothofagus dombeyi and Myrceugenia exsucca), and an emergent macrophyte (Schoenoplect...
Potentilla anserina is a common invasive species of Patagonian wetlands. Although this species is commonly found in temporary habitats, where it establishes during the dry phase, the littoral zones of lakes are also susceptible, as water fluctuations make this habitat extremely variable in terms of water availability. Decay rates and nutrient relea...
La vegetación de los humedales desempeña un papel crucial en los ecosistemas andinos, fundamentales por su biodiversidad, por ofrecer numerosos servicios ecosistémicos y por mitigar el cambio climático. A pesar de esto, se conoce muy poco sobre la riqueza y la diversidad de las especies presentes en los humedales y, en particular, en los mallines u...
Biological invasions are one of the main drivers of changes in ecological features in aquatic environments. Invasive alien species may have far-reaching effects on the host environment that need to be explored. In this study, we compared particulate and dissolved organic matter (POM and DOM) production from two common Patagonian wetland plants, one...
Volcanic eruptions that shape the earth's surface can have major effect on ecosystems and, as natural experiments, can yield insights into ecological dynamics. On 04 June 2011, a mega-eruption in the Puyehue volcanic complex (Chile) discharged massive amounts of ash and pumice. Using long-term data from five North Andean Patagonian lakes (Espejo, C...
Glaciers around the globe are melting rapidly, threatening the receiving environments of the world's fresh water reservoirs with significant changes. The meltwater, carried by rivers, contains large amounts of suspended sediment particles, producing longitudinal gradients in the receiving lakes. These gradients may result in changes in the light :...
The North-Patagonian Andean lakes of
Argentina are high light, low nutrient environments that
exhibit development of deep chlorophyll maxima (DCM)
at the metalimnetic layer during summer stratification, at
approximately 1 % of surface PAR irradiance. We examined
whether the position of DCM changes as a
consequence of long-time (global warming: glac...
Wetlands are subject to invasion by exotic plant species, especially during the dry season when they resemble terrestrial systems; therefore, terrestrial plants could exploit this situation to colonize this environment. We analyzed P. anserina invading Patagonian wetlands in terms of elemental ratios that would modify wetland stoichiometry due to o...
In wetlands, macrophytes and filamentous algae constitute an important carbon source for the total content of Dissolved Organic Matter (DOM) of the environment. Mallín wetland meadows are highly diverse and rare habitats in Patagonia, that can be characterized as wet meadows with a dense cover mainly dominated by herbaceous plants. We carried out a...
North Andean Patagonian aquatic systems include a number of deep and shallow oligotrophic lakes with a profuse hydrographic net. In this contribution we present a review of the researches carried out during the last decade in the food webs of North Patagonian water bodies. Food webs in these systems were studied based on field surveys, combining wi...
North Andean Patagonian aquatic systems include a number of deep and shallow oligotrophic lakes with a profuse hydrographic net. In this contribution we present a review of the researches carried out during the last decade in the food webs of North Patagonian water bodies. Food webs in these systems were studied based on field surveys, combining wi...
In the last decades there has been an increase in the consumption of medicinal plants worldwide. In Argentina, this increase coincides with an inefficient action of the control organisms. Semi-structured interviews were conducted to medicinal plants sellers at 13 sites in Bariloche in order to investigate general aspects of marketing. In total, 64...
Etnobotánica urbana, plantas medicinales, control de calidad, adulteración, Patagonia.
En las últimas décadas se ha detectado un incremento en el consumo de plantas medicinales a nivel mundial. En Argentina, este incremento convive con un ineficiente accionar de los organismos de control. Se realizaron entrevistas semiestructuradas a expendedores de plantas medicinales en 13 sitios de venta de Bariloche con el objeto de indagar aspec...
Question: Does the proximity of shrubs affect seasonal water stress of young Austrocedrus chilensis trees (a native conifer of the Austral Temperate Forest of South America) in xeric sites?
Location: A. chilensis xeric forest in northwest Patagonia, Argentina.
Methods: We examined the dependence of predawn twig water potential on tree development (...
