Enrique Navarro

Enrique Navarro
Spanish National Research Council | CSIC · Department of Biodiversity and Restoration

PhD in Biological Sciences

About

86
Publications
31,200
Reads
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4,992
Citations
Citations since 2017
21 Research Items
2428 Citations
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Introduction
My research assesses the impacts of human activities in aquatic and terrestrial environments at different biological scales. My research projects focus on: 1. Ecotoxicological impacts of nanoparticles, herbicides, heavy metals and UVR. 2. Ecological modelling of human impacts at ecosystem level (water quality and invasive species). 3. Use of plants as biomonitoring tools for airborne pollution. 4. Algal biotechnology for water treatment.
Additional affiliations
September 2008 - present
Spanish National Research Council
Position
  • Researcher
Description
  • My research focus on the impacts of human activities in aquatic and terrestrial environments at different biological levels, combining studies on organisms, mesocosms, and surveys of natural communities.
January 2007 - December 2009
January 2002 - present
Universitat de Barcelona

Publications

Publications (86)
Article
Silver nanoparticles (AgNP) are likely to enter the aquatic environment because of their multiple uses. We have examined the short-term toxicity of AgNP and ionic silver (Ag+) to photosynthesis in Chlamydomonas reinhardtii using fluorometry. AgNP ranged in size from 10 to 200 nm with most particles around 25 nm. As determined by DGT (diffusive grad...
Article
Developments in nanotechnology are leading to a rapid proliferation of new materials that are likely to become a source of engineered nanoparticles (ENPs) to the environment, where their possible ecotoxicological impacts remain unknown. The surface properties of ENPs are of essential importance for their aggregation behavior, and thus for their mob...
Article
Full-text available
The Water Framework Directive EU2000/60/EC (WFD) was implemented for reservoirs at a regional scale (northeastern Spain). Twenty-one reservoirs were monitored quarterly over the course of a year. Using principal component analysis, the reservoirs were classified into types according to their geological and morphometric features. The Ecological Qual...
Article
Various factors have been invoked to explain the toxicity of silver nanoparticles (AgNP) to microorganisms including particle size, the nature of stabilizing coatings as well as the amount of dissolved silver occurring in AgNP suspensions. In this study we have assessed the effects of nine differently coated AgNP (chitosan, lactate, polyvinyl pyrro...
Article
Although the biological importance of ultraviolet light (UVR) attenuation has been recognised in marine and freshwater environments, it is not generally considered in in vitro ecotoxicological studies using algal cell suspensions. In this study, UVA and UVB extinction were determined for cultures of algae with varying cell densities, and the data w...
Article
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Plastics, especially microplastics (<5 mm in length), are anthropogenic polymer particles that have been detected in almost all environments. Microplastics are extremely persistent pollutants and act as long-lasting reactive surfaces for additives, organic matter, and toxic substances. Biofilms are microbial assemblages that act as a sink for parti...
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Despite the exponential increase in human population at global scale, some rural areas have experienced a progressive abandonment over the last decades. Under particular socioecological and policy contexts, changes in demography may promote land-use changes and, consequently, alter ecosystem services (ES) supply. However, most studies on this topic...
Article
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Global change drivers including eutrophication, hydrological disturbance, climate change, chemical pollution, overexploitation, invasive species, and land-use change are affecting the function and structure of freshwater ecosystems. South American freshwater ecosystems are especially threatened by the combination of rising human pressures on natura...
Article
Fipronil is a broad-spectrum insecticide whose release in the environment damages many non-target organisms. This study evaluated the toxicity of fipronil at two biological levels using in vivo conditions and environmentally relevant concentrations: the first based on two model organisms (aquatic invertebrate Daphnia magna and the unicellular fresh...
Article
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Indicators of ecosystem health are effective tools to assess freshwater ecosystem impairment. However, they are scarcely used as a monitoring tool by local environmental agencies in Argentina. Here, we review the literature to analyze the use of ecosystem health indicators in freshwaters from Argentina. We found 91 scientific articles relating to t...
Book
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Los estresores ambientales tienen efectos medibles en el ecosistema fluvial y sus organismos, por lo que estos últimos son de interés para estimar la integridad o el estado ecológico de los ríos. En Suramérica los métodos para la evaluación de los ríos varían entre países, con lo cual es necesario conocer cuáles receptores biológicos y ambientales...
Article
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Modeling is a useful way to understand human and climate change impacts on the water resources of agricultural watersheds. Calibration and validation methodologies are crucial in forecasting assessments. This study explores the best calibration methodology depending on the level of hydrological alteration due to human-derived stressors. The Soil an...
Article
Many applications as optical spectroscopy, photothermal therapy, photovoltaics or photocatalysis take advantage of localized surface plasmon resonance of noble metal nanoparticles. Among them, Ag nanoparticles are multi‐functionnal nano‐objects that can be used as efficient plasmonic antennae but also as electron reservoirs for charge transfer or i...
Article
Natural pesticides are considered a good alternative to synthetic pesticides to reduce environmental impacts. However, biopesticides may have unknown effects on the environment, and can affect non-target organisms. In this study, the ecotoxicological effects of an aqueous extract (hydrolate) from Spanish populations of Artemisia absinthium (var. Ca...
Article
Because of their biocide properties, silver nanoparticles (AgNPs) are present in numerous consumer products. The biocidal properties of AgNPs are due to both the interactions between AgNP and cell membranes and the release of dissolved silver (Ag+). Recent studies emphasized the role of different nanoparticle coatings in complexing and storing Ag+....
Article
Plant-based biopesticides have become an eco-friendly alternative to synthetic pesticides by reducing the undesired environmental impacts and side-effects on human health. However, their effects on the environment and especially on non-target organisms have been little studied. This study analyses the ecotoxicological effects of the extract of Lava...
Article
Biopesticides are increasingly being used to replace synthetic pesticides for pest control. This change raises concern for its environmental impacts, especially on non-target organisms. In this study, the ecotoxicological effects of a potential nematicide from Spanish populations of Artemisia absinthium (var. Candial) were evaluated on freshwater a...
Article
Using the 16S rRNA and mcrA genes, we investigated the composition, abundance and activity of sediment archaeal communities within 18 high‐mountain lakes under contrasted metal levels from different origins (bedrock erosion, past‐mining activities and atmospheric depositions). Bathyarchaeota, Euryarchaeota and Woesearchaeota were the major phyla fo...
Article
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Restoration ecology that maximizes ecosystem services (ES) requires planning at large spatial scales, which are often the most meaningful for ecosystem functioning and ES supply. As economic resources to undertake ecological restoration at large scales are scarce, prioritizing sites to enhance multiple ES supply is critical. We present the Relative...
Article
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A thorough understanding of spatial and temporal emission and immission patterns of air pollutants in urban areas is challenged by the low number of air quality monitoring stations available. Plants are promising low cost biomonitoring tools. However, source identification of the trace metals incorporated in plant tissues (i.e. natural vs. anthropo...
Article
An ecotoxicological survey of soils that were polluted with wastes from lindane (γ-HCH) production assessed the effects of organochlorine compounds on the metabolism of microbial communities and the toxicity of these compounds to a native earthworm (Allolobophora chlorotica). Furthermore, the bioremediation role of earthworms as facilitators of soi...
Article
Pharmaceutical residues can enter the terrestrial environment through the application of recycled water and contaminated biosolids to agricultural soils, were edaphic microfauna can would be threatened. This study thus assessed the effect of 18 widely consumed pharmaceuticals, belonging to four groups: antibiotics, non-steroidal anti-inflammatory d...
Article
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Climate warming can lead to changes in alpine plant species interactions through modifications in environmental conditions, which may ultimately cause drastic changes in plant communities. We explored the effects of 4 years of experimental warming with open-top chambers (OTC) on Vaccinium myrtillus performance and its interaction with neighbouring...
Article
Environmental contextThe search for alternative solvents to prevent environmental damage is one of the main interests in 'green' sciences. Five of these new substances from biodiesel production were evaluated to assess their negative environmental effects. The results obtained showed that three of these chemicals may be harmless for short exposure...
Article
Global change is transforming freshwater ecosystems, mainly through changes in basin flow dynamics. This study assessed how the combination of climate change and human management of river flow impacts metabolism of the Ebro River (the largest river basin in Spain, 86,100 km2), assessed as gross primary production—GPP—and ecosystem respiration—ER....
Article
Global change, as a combination of climate change, human activities on watersheds and the river flow regulation, causes intense changes in hydrological cycles and, consequently, threatens the good ecological status of freshwater biological communities. This study addresses how and whether the combination of climatic drivers and local human impacts...
Article
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Pharmaceuticals reach terrestrial environments through the application of treated wastewaters and biosolids to agricultural soils. We have investigated the toxicity of 15 common pharmaceuticals, classified as nonsteroidal anti-inflammatory drugs (NSAIDs), blood lipid-lowering agents, β-blockers and antibiotics, in two photosynthetic organisms. Twel...
Conference Paper
Full-text available
The novel features, based on the exposure of a higher number of atoms on the surfaces, allow nanomaterials to exhibit new or improved features to consumer products, that should be carefully assessed. Here is presented a new method based on the use of biosensors (algal cells) to assess the release of dissolved silver from nanoparticles. Algae were e...
Article
Please cite this article in press as: Antiguedad, I., et al., A simple multi-criteria approach to delimitate nitrate attenuation zones in alluvial floodplains. Four cases in southwestern Europe. Ecol. Eng. (2016), http://dx. a b s t r a c t Four alluvial floodplains were selected in the European southwestern lowland area: the rivers Ebro, Bidasoa,...
Article
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Floodplains are complex ecological systems that are mostly regulated by river dynamics and human disturbances that determine the efficiency of the coupling of hydrogeochemical functions and the biological structure to keep floodplains as integrated systems providing regulating services, such as removing pollutants. Biogeochemical indicators related...
Article
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The analysis of the airborne particulate matter-PM-incorporated to plant leaves may be informative of the air pollution in the surroundings, allowing their use as biomonitoring tools. Regarding metals, their accumulation in leaves can be the result of both atmospheric incorporation of metallic PM on aboveground plant organs and root uptake of solub...
Chapter
Full-text available
Nowadays, biofilms are one of the principal targets of community ecotoxicology in aquatic ecosystems with a high potential for future use in ecotoxicology. A large set of methods derived from biofilm ecology has successfully been applied in ecotoxicology providing a diverse and comprehensive toolbox. Our ability to quantify the effects of pollution...
Chapter
In this chapter we review the implementation of the Water Framework Directive in Catalan large reservoirs and the impact of the first Program of Measures on the ecological quality of these water bodies. In this case, the implementation faced a big challenge, resulting from combining a reduced number of water bodies located on highly heterogeneous g...
Book
Nowadays, biofilms are one of the principal targets of community ecotoxicology in aquatic ecosystems with a high potential for future use in ecotoxicology. A large set of methods derived from biofilm ecology has successfully been applied in ecotoxicology providing a diverse and comprehensive toolbox. Our ability to quantify the effects of pollution...
Article
The climatic-change related increase of temperatures, are expected to alter the distribution and survival of freshwater species, ecosystem functions, and also the effects of toxicants to aquatic biota. This study has thus assessed, as a first time, the modulating effect of climate-change drivers on the mercury (Hg) toxicity of freshwater algal phot...
Article
A major challenge in environmental risk assessment of pollutants is establishing a causal relationship between field exposure and community effects that integrates both structural and functional complexity within ecosystems.Pollution-induced community tolerance (PICT) is a concept that evaluates whether pollutants have exerted a selection pressure...
Article
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This study assessed the interactive effects of UVR and nutrient depletion on Chlorella fusca cultures on the production and accumulation of particular biomolecules. To accomplish this, algae were grown for 5 d in outdoor thin-layer cascade cultivators under 3 nutrient treatments (full nutrients, -N and -S) and then transferred to outdoor cylindrica...
Article
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Chlorella spp. are robust chlorophyte microalgal species frequently used in mass culture. The pH optimum for growth is close to neutrality; at this pH, theoretically little energy is required to maintain homeostasis. In the present study, we grew Chlorella fusca cells in an open, outdoor, thin-layer cascade photobioreactor (TLC), under ambient phot...
Article
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The thin-layer cascade (TLC) system is an open system for microalgae cultivation composed of a retention tank connected by pump and pipes to a horizontal exposed area that consists of an upper basin and a TLC. Light and hydrodynamics are different among compartments, so overall photosynthetic activity can be influenced by the retention time of the...
Conference Paper
Full-text available
Introduction. Global change effects (climate change + anthropogenic pressures) are transforming freshwater ecosystems, mainly through changes in basin flow dynamics. An analysis of 86 million data of flow and physicochemical water quality parameters from the Ebro River basin (the largest basin in Spain 86,100 km 2) from 1998 to 2011 identified peri...
Article
The increasing interest in the development of novel green solvents has led to the synthesis of benign alternative products with minimized environmental impacts. However, most of published studies on green solvents focus primarily on their physicochemical properties, with limited emphasis on absence of ecotoxicological assessment. In this study, we...
Article
A small hydrological basin (Lerma, NE Spain), transformed from its natural state (steppe) to rain-fed agriculture and recently to irrigation agriculture, has been monitored across four seasons of an agricultural year. The goal of this study was to assess how and whether agricultural activities impacted the nearby freshwater ecosystems via runoff. S...
Article
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Biolog EcoPlates™ can be used to measure the carbon substrate utilisation patterns of microbial communities. This method results in a community-level physiological profile (CLPP), which yields a very large amount of data that may be difficult to interpret. In this work, we explore a combination of statistical techniques (particularly the use of gen...
Article
Many dryland areas are being converted into intensively managed irrigation crops, what can disrupt the hydrological regime, degrade soil and water quality, enhance siltation, erosion and bank instability, and affect biological communities. Still, the impacts of irrigation schemes on the functioning of terrestrial and aquatic ecosystems are poorly u...
Article
Water resources are directly and indirectly affected by anthropogenic activities (e.g., changes in land use) and natural factors (e.g., climate change), that is, global change. The Mediterranean basin is one of the most vulnerable regions of the world to global change, and one of the “hot spots” for forthcoming problems of water availability. The p...
Article
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Nanoparticles are found in increasing numbers of products, making it all the more likely that they will also be released into the aquatic environment. This may occur in the course of production, use or disposal, either directly (e. g. as a result of accidents) or via wastewater. Although the proportion of engineered nanoparticles in the environment...
Article
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Nanopartikel tauchen in immer mehr Produkten auf. Damit wächst die Wahrscheinlichkeit, dass sie auch in Gewässer eingetragen werden. Das kann bei der Produktion, Anwendung oder Entsor- gung direkt (z. B. aufgrund von Unfällen) oder über das Abwasser geschehen. Obwohl der Anteil synthetischer Nanopartikel in der Umwelt im Vergleich zu den natürliche...
Article
The aim of the present study was to investigate the kinetics of cadmium (Cd) accumulation (total and intracellular) in periphyton under freshwater conditions in a short-term microcosm experiment. Periphyton was precolonized in artificial flow-through channels supplied with natural freshwater and then exposed for 26.4 h to nominal Cd concentrations...
Article
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La concentración de fósforo en el agua es uno de los factores principales que regulan la biomasa y producción del fitoplancton. Sin embargo, la asimilación de fósforo por las algas puede no causar un crecimiento inmediato, ya que otros factores (luz u otros nutrientes) pueden limitar la producción. Además, se ha observado la asimilación �lujuriosa�...
Article
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Phosphorus concentration in the water is one of the main factors regulating phytoplankton biomass and productivity in inland water bodies. However, phosphorus uptake by algae could not cause immediate growth, because other factors (light and other nutrient availability) may limit production. Nonetheless, "luxurious" phosphorus uptake (i.e. phosphor...
Article
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We studied the long-term acclimatization of freshwater periphyton communities exposed to low and high ultraviolet radiation (UVR) intensities that simulate UVR doses received by lowland and high-mountain streams of central Europe. To assess changes induced by UVR, we compared the community structure ( species and biomass), function ( photosynthetic...
Article
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1. Wind is considered the dominant factor controlling phytoplankton distribution in lentic environments. In canyon-shaped reservoirs, wind tends to blow along the main axis generating internal seiches and advective water movements that jointly with biological features of algae can produce a heterogeneous phytoplankton distribution. Turbulence gener...
Article
There is considerable concern about increasing levels of solar ultraviolet radiation (UVR) and the potential harmful effects of UVR on living organisms. Microcosm studies were conducted with algal biofilms and Scenedesmus vacuolatus cultures to examine the effects of increased UVR on freshwater algae. Because algae have evolved various strategies t...
Article
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During summer 200 1, zebra mussels (Dreissena polymorpha Pallas) were found (500 adults m(-2)) in the coupled reservoir system composed by Mequinenza, Riba-Roja and Flix (Ebro River, Northeast Spain). Two years later, mussels achieved densities of 4000 adults m(-2), representing the first record of successful colonization by zebra mussels in the Ib...
Article
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A l'heure actuelle, les rejets de métaux dans l'environnement sont beaucoup moins impor- tants que par le passé. Toutefois, même de faibles concentrations de métaux peuvent porter atteinte aux organismes aquatiques et donc perturber l'ensemble de l'écosystème concerné. C'est là qu'interviennent les écotoxicologues. Leur mission est de développer de...
Article
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Algenbiofilme reagieren recht schnell auf stark erhöhte Metallkon- zentrationen in den Gewässern. Wir wissen, dass Biofilme Metalle aus dem Wasser herausfiltern und sie akkumulieren und dass Biofilme Mechanismen zur Metallentgiftung in Gang setzen (siehe auch Artikel von S. Meylan auf S. 19 und S. Le Faucheur auf S. 22). Anhand dieser beiden Vorgän...
Article
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Reservoir sediments are important archives of biogeochemical data, reflecting ecological processes that occur at the watershed system. In this paper, a preliminary study of the limnological significance of major element composition and element ratios in sediments of Spanish reservoirs is presented, by analysing two data-sets from different limnolog...
Article
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The relationship of water quality and fish assemblages has been poorly documented in European reservoirs, despite being important for water management and ecological monitoring. We sampled the fish assemblages of 14 Spanish reservoirs by boat electrofishing in the littoral and multi-mesh gillnets in the limnetic zone. Simultaneously, we assembled e...
Article
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By contrast to many natural lakes, the summer hypolimnion in advection-dominated systems like canyon-shaped reservoirs is not isolated from direct inputs from the river. This has important implications in the evolution of limnological features of the hypolimnion through the stratified period, especially if the river water directly plunges as a dens...
Article
1. To assess the influence of nutrient limitation on copper toxicity, periphitic communities from an oligotrophic stream were exposed to copper for six to 12 days with and without the supply of nutrients (mainly P). 2. In contrast to the hypothesis that nutrient cycling in mature biofilms would protect them from Cu toxicity, low and high biomass bi...
Article
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The ecological factors that co-occur with the production of geosmin have been studied in a Mediterranean river, which shows repeated episodes of this metabolite causing nuisance off flavours. The geosmin peaks consistently occurred from early winter (late January or February) to late spring (May or June). Absolute geosmin maximum were different bet...