Anna Avila

Anna Avila
CREAF Centre for Ecological Research and Forestry Applications | CREAF · Department of Ecology

PhD

About

119
Publications
50,058
Reads
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4,588
Citations
Additional affiliations
October 1994 - October 2015
September 1984 - September 1994
Autonomous University of Barcelona
Position
  • Professor (Assistant)
September 1980 - October 1984
University of Barcelona
Position
  • doctorate student

Publications

Publications (119)
Article
Full-text available
Previous studies have evaluated how changes in atmospheric nitrogen (N) inputs and cli- mate affect stream N concentrations and fluxes, but none have synthesized data from sites around the globe. We identified variables controlling stream inorganic N concentrations and fluxes, and how they have changed, by synthesizing 20 time series ranging from 5...
Article
Full-text available
this is the supplementary material related to the article that can be found at http://dx. doi.org/10.1016/j.envpol.2016.06.027.
Technical Report
We identified variables controlling stream nitrogen concentrations and fluxes, and how they have changed over time, by synthesizing 20 time series ranging from 5 to 51 years of data collected from forest and grassland dominated watersheds across Europe, North America, and East Asia and across four climate types (tropical, temperate, Mediterranean,...
Article
Full-text available
Litter decomposition is a key process for carbon and nutrient cycling in terrestrial ecosystems and is mainly controlled by environmental conditions, substrate quantity, and quality as well as microbial community abundance and composition. In particular, the effects of climate and atmospheric nitrogen (N) deposition on litter decomposition and its...
Article
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Climate change in a region in eastern Pyrenees
Article
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A reliable quantification of total inorganic nitrogen (TIN) deposition to forests is required for the evaluation of ecological effects of TIN inputs to forests and to monitor the success of clean-air policy. As direct measurements are scarce, different modeling approaches have been developed to estimate TIN deposition to forests. Three common metho...
Article
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Sulfur (S) and nitrogen (N) increasing anthropogenic emissions in the last century has arisen wide concern on the ecological effects of S and N deposition. In this paper, we use bulk deposition and stream water measurements in the central Pyrenees (PYR-C and PYR-AT sites) and Montseny (MSY-TM0) covering different time lengths in the period 1983-201...
Article
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1.Microbial activity plays a central role in nitrogen (N) cycling, with effects on forest productivity. Though N bio‐transformations, such as nitrification, are known to occur in the soil, here we investigate whether nitrifiers are present in tree canopies and actively process atmospheric N. 2.This study was conducted in a Mediterranean holm oak (Q...
Article
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The Montseny brook newt (Calotriton arnoldi) is a critically endangered amphibian species which inhabits a small 20 km2 holm oak and beech forest area in NE Spain. Calotriton arnoldi strictly lives in running waters and might be highly vulnerable to hydrological perturbations expected to occur under climate and vegetation cover changes. Knowledge a...
Article
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text in catalan Abstract Data shown in this article demonstrate the strong interrelations between the atmosphere and the biosphere, and exemplify a case where the reduction of emissions to the atmosphere of a pollutant (sulfur dioxide) has had effective and fast effects in the receptor ecosystems, studied in the Montseny mountains (NE Iberian Penin...
Chapter
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Section 4.1 describes an approach to optimise the modelling of dry deposition under Mediterranean conditions (i.e. long dry summers). This is important because most modelling approaches have been developed under the more Atlantic (i.e. wetter) climate condition of central Europe. Achieving better estimates of nitrogen input to forests is essential...
Article
In Mediterranean areas, dry deposition is a major component of the total atmospheric N input to natural habitats, particularly to forest ecosystems. An innovative approach, combining the empirical inferential method (EIM) for surface deposition of NO3− and NH4+ with stomatal uptake of NH3, HNO3 and NO2 derived from the DO3SE (Deposition of Ozone an...
Article
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Large worldwide sources of dust, such as the Saharan desert, play a key role in the amounts and composition of atmospheric particulate deposition (APD), but their relative contribution compared to other sources remain unclear. Our study aimed to apportion Saharan, regional, and anthropogenic sources of APD in three sites sampling along a long trans...
Article
Full-text available
Through litter decomposition enormous amounts of carbon is emitted to the atmosphere. Numerous large-scale decomposition experiments have been conducted focusing on this fundamental soil process in order to understand the controls on the terrestrial carbon transfer to the atmosphere. However, previous studies were mostly based on site-specific litt...
Article
Full-text available
Through litter decomposition enormous amount of carbon is emitted to the atmosphere. Numerous large-scale decomposition experiments have been conducted focusing on this fundamental soil process in order to understand the controls on the terrestrial carbon transfer to the atmosphere. However, previous studies were mostly based on site-specific litte...
Article
Full-text available
Through litter decomposition enormous amounts of carbon is emitted to the atmosphere. Numerous large-scale decomposition experiments have been conducted focusing on this fundamental soil process in order to under-stand the controls on the terrestrial carbon transfer to the atmosphere. However, previous studies were mostly based on site-specific litt...
Article
Full-text available
To assess the impact of nitrogen (N) pollutants on forest ecosystems, the role of the interactions in the canopy needs to be understood. A great number of studies have addressed this issue in heavily N-polluted regions in north and central Europe. Much less information is available for the Iberian Peninsula, and yet this region is home to mountain...
Article
This study considers the role of distance to the African source on the amount of deposition. To this end, dry and wet deposition was measured at a site close to Africa (Santa Cruz de Tenerife in the Canary Islands, SCO) and at a distant site located in NE Spain (La Castanya, Montseny, MSY). Because of the important influence of African influence on...
Article
Mediterranean Basin ecosystems, their unique biodiversity, and the key services they provide are currently at risk due to air pollution and climate change, yet only a limited number of isolated and geographically-restricted studies have addressed this topic, often with contrasting results. Particularities of air pollution in this region include hig...
Article
Resumen La composición química de la atmósfera ha cambiado significativamente en los últimos 100 años principalmente debido al aumento de las emisiones de gases y partículas derivadas de las actividades humanas. Numerosos estudios han descrito las tendencias de cambio de la química atmosférica, la composición química de la lluvia y la deposición at...
Article
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Despite recent regulations, atmospheric ammonia (NH3) emissions have not changed much over the last decades and excessive nitrogen remains as one of the major drivers for biodiversity changes. To prevent deleterious effects on species and ecosystems, it is very important to establish safety thresholds, such as those defined by the Critical Level (C...
Article
Bulk/wet and throughfall fluxes of major compounds were measured from June 2011 to June 2013 at four Mediterranean holm-oak (Quercus ilex) forests in the Iberian Peninsula. Regression analysis between net throughfall fluxes and precipitation indicated that the best defined canopy process was leaching for K+ and uptake for NH4+ at all sites. A more...
Article
Bulk/wet and throughfall fluxes of major compounds were measured from June 2011 to June 2013 at four Mediterranean holm-oak (Quercus ilex) forests in the Iberian Peninsula. Regression analysis between net throughfall fluxes and precipitation indicated that the best defined canopy process was leaching for K⁺ and uptake for NH4⁺ at all sites. A more...
Article
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Oxidative stress and neuroinflammatory changes appear to be the early events involved in AD’s development and progression. The present study was designed to assess the effect of soybean isoflavone extract (SIFE) against colchicine-induced cognitive dysfunction and oxidative stress in male rats. Fifty adult male Wistar albino rats were divided into...
Article
Deposition of dissolved organic nitrogen (DON) in both bulk precipitation (BD) and canopy throughfall (TF) has been measured for the first time in the western Mediterranean. The study was carried out over a year from 2012 to 2013 at four evergreen holm oak forests located in the Iberian Peninsula: two sites in the Province of Barcelona (Northeaster...
Article
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Today biochar is considered a stable-carbon source that is able to improve soil quality. However, although biochar effects on some soil properties are already becoming well known, its impact on complex soil hydrological functions has yet to be better assessed. The main objectives are: (a) to determine the impact of different biochar amendments on i...
Article
Biological productivity in many ocean regions is controlled by the availability of the nutrient phosphorus. In the Mediterranean Sea, aerosol deposition is a key source of phosphorus and understanding its composition is critical for determining its potential bioavailability. Aerosol phosphorus was investigated in European and North African air mass...
Data
h i g h l i g h t s WeMO index better describes winter precipitation in the NE Iberian Peninsula than NAO. Element deposition was correlated with NAO and WeMO depending on air provenance. Few studies have analyzed the relationship between rain chemistry vs. NAO and WeMO. a b s t r a c t The North Atlantic Oscillation (NAO) has been identified as on...
Article
The North Atlantic Oscillation (NAO) has been identified as one of the atmospheric patterns which mostly influence the temporal evolution of precipitation and temperature in the Mediterranean area. Recently, the Western Mediterranean Oscillation (WeMO) has also been proposed to describe the precipitation variability in the eastern Iberian Peninsula...
Article
The Mediterranean Basin presents an extraordinary biological richness but very little information is available on the threat that air pollution, and in particular reactive nitrogen (N), can pose to biodiversity and ecosystem functioning. This study represents the first approach to assess the risk of N enrichment effects on Spanish ecosystems. The s...
Article
AimMediterranean terrestrial ecosystems serve as reference laboratories for the investigation of global change because of their transitional climate, the high spatiotemporal variability of their environmental conditions, a rich and unique biodiversity and a wide range of socio-economic conditions. As scientific development and environmental pressur...
Article
The cluster classification of provenances at a site in the NE Iberian Peninsula indicated that in the period of extended winter (December to March, DJFM) fast Atlantic air flows correspond to positive WeMO index (WeMOi), while negative WeMOi are associated to Mediterranean circulations. The amount of winter precipitation was inversely correlated wi...
Article
Full-text available
Wet-only, dry-only, bulk deposition and deposition of sedimentary particles and gases deposited after the last rain (DAR) were collected weekly at La Castanya station in the Montseny mountains (NE Spain, 41°46′N, 2°21′E) from February 2009 to July 2010. These samples were analysed for pH, alkalinity, and the concentrations of major ions (Cl−, NO3 −...
Article
The cluster classification of provenances at a site in the NE Iberian Peninsula indicated that in the period of extended winter (December to March, DJFM) fast Atlantic air flows correspond to positive WeMO index (WeMOi), while negative WeMOi are associated to Mediterranean circulations. The amount of winter precipitation was inversely correlated wi...
Chapter
Full-text available
La composición química de la atmósfera ha experimentado cambios significativos desde el comienzo de la Revolución Industrial a mitad del siglo XIX, debido a la emisión de gases y partículas ligados al incremento del uso de fertilizantes y combustibles fósiles, generando una serie de problemas ambientales a escala global. La alteración más conocida...
Book
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SOSTENIBILIDAD EN ESPAÑA 2011 327 l Observatorio de la Sostenibilidad de España (OSE) ha preparado el presente capítulo espe-cial sobre bosques, en el marco de su Informe Sostenibilidad en España 2011, con ocasión de la celebración del Año Internacional de los Bosques. La Asamblea General de Naciones Unidas acordó en 2006 celebrar en 2011 este impo...
Article
The aim of this study was to gain insights on the potential hydrological and biogeochemical mechanisms controlling the response of two nested Mediterranean catchments to long-term changes in atmospheric inorganic nitrogen and sulphate deposition. One catchment was steep and fully forested (TM9, 5.9 ha) and the other one had gentler slopes and heath...
Article
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Atmospheric deposition to land and aquatic surfaces depends on the atmospheric gas/aerosol loads and on precipitation amount (which is a major vehicle for scavenging and depositing atmospheric material). Climate variability patterns (NAO, WO and WeMO) have been found to affect precipitation quantity in the Mediterranean fringe of the Iberian Penins...
Article
Long-range, seasonal migration is a widespread phenomenon among insects, allowing them to track and exploit abundant but ephemeral resources over vast geographical areas. However, the basic patterns of how species shift across multiple locations and seasons are unknown in most cases, even though migrant species comprise an important component of th...
Article
h i g h l i g h t s < Precipitation SO 4 2À and H þ decreased but NO 3 À increased (p < 0,05) at a NE Spain site. < In 1984e1993 these pollutants were mostly originated in central and eastern Europe. < Recently this shifted to marine traffic and eastern Europe and North Africa emissions. a b s t r a c t The aim of this study is to interpret the var...
Article
a b s t r a c t In this study, African red-rains were collected at Montseny (NE Spain) on a weekly basis and analyzed for total particulate phosphorus (TPP), total dissolved P (TDP) and soluble reactive P (SRP) for the period 1996e2008. Wet and dry weekly deposition of TPP was analyzed for all provenances in 2002e2003. In this period, African sourc...
Article
Surface water chemistry has changed in response to reduced atmospheric deposition of sulphur and acidity in many regions of Europe and North America. Most of these studies come from acidic or low-alkalinity surface waters under high acidic deposition. Mediterranean climates offer a different biogeochemical context, characterised by streamwaters of...
Article
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Each spring, Vanessa cardui (Linnaeus) migrates into Europe, sometimes in huge numbers. Although it is widely accepted that migrants come from North Africa, there is currently a dearth of information on the source areas they originate from. However, in a recent study, a strong association between V cardui arriving in spring in Catalonia (NE Spain)...
Article
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A source apportionment technique has been applied to determine the geographical distribution of emissions in Northern Africa contributing to dust outbreaks that yield high PM10 levels at Spanish regional background stations. Seven dust episodes have been analyzed in this study. Total suspended particles have been sampled and chemically analyzed for...
Article
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African dust additions explain the origin of terra rossa soils that are common on the carbonate-platform island of Mallorca, Spain. Mineralogical and geochemical analyses indicate that Quaternary carbonate eolianites on Mallorca have a very high purity, usually composed of more than 90% carbonate minerals (calcite, dolomite, and aragonite). In cont...
Article
Nitrogen emissions have grown in Spain during the last 15years. As precipitation scavenges gases and aerosols from the atmosphere, an effect on rainwater concentrations can be expected. However, time-series studies on wet N concentrations in the Iberian Peninsula are very scarce. This paper aims to fill this gap by analysing weekly rainfall N conce...
Article
The Canary Islands, due to their geographical position, constitute an adequate site for the study of long-range pollen transport from the surrounding land masses. In this study, we analyzed airborne pollen counts at two sites: Santa Cruz de Tenerife (SCO), at sea level corresponding to the marine boundary layer (MBL), and Izaña at 2,367 m.a.s.l. co...
Article
Full-text available
The source-receptor models allow the establishment of relationships between a receptor point (sampling point) and the probable source areas (regions of emission) through the association of concentration values at the receptor point with the corresponding atmospheric back-trajectories, and, together with other techniques, to interpret transport phen...
Article
Resum Els models font-receptor permeten establir relacions entre un punt receptor (punt de mostreig) i lesàreesles`lesàrees font probables (regions emissores) mitjançant l'associació de valors de concentració en el punt receptor amb les corresponents retrotrajectòries atmosfèriques, i, juntament amb altres t` ecniques, permeten interpretar fenòmens...
Article
On October 2006, during an episode of abnormally warm weather, the African moth Cornifrons ulceratalis (Lederer, 1858) was captured simultaneously for the first time in several sites in north-eastern Spain, the Balearic Islands and southern France. A deep depression situated over the Atlantic at the time gave rise to warm south-westerly winds, acco...