Grupos Investigadores

Líneas de Investigación

  • Seguimiento y evaluación de la contaminación en ecosistemas, zonas urbanas, áreas industriales y ambientes interiores.
  • Monitorización de gases de efecto invernadero en ecosistemas sensibles al cambio climático.
  • Estudio de los ciclos biogeoquímicos en los ecosistemas: monitorización integrada.
  • Efectos del nitrógeno reactivo en las distintas esferas ambientales.
  • Clasificación, cartografía, evaluación, conservación y rehabilitación de suelos. Mineralogía del suelo.
  • Biomonitorización de contaminantes ambientales: exposición y efectos.

Palabras Clave

  • Suelos
  • Sensores
  • Ozono troposférico
  • Nitrógeno reactivo
  • Metales pesados
  • Material particulado
  • Isótopos estables
  • Gases de efecto invernadero
  • Contaminación en interiores
  • Contaminación atmosférica
  • Compuestos orgánicos volátiles
  • Cambio climático
  • Bioindicadores

Publicaciones Científicas desde 2018

  • Autores: Morera Gomez, Yasser (Autor de correspondencia); Alonso Hernández, C. M.; Armas Camejo, A.; et al.
    Revista: ECOLOGICAL INDICATORS
    ISSN 1470-160X Vol.126 2021 págs. 107667
    Resumen
    This work provides a comprehensive report on the chemical composition of 47 major and trace elements in Tillandsia recurvata (L.) L. and top soil samples from the cities of Cienfuegos and Santa Clara in Cuba. The main aims were to provide new information on the urban pollution degree in Caribbean urban regions where the availability of data of urban health indicators are very limited and to identify the main pollution sources. The abundance of the analyzed elements at both type of samples were different at each urban regions suggesting the influence of various sources. Top soils were slightly contaminated with Zn, V, Ba, Pb, Ni, Cr, Cu, Co and Hg and seriously contaminated with Ni and Cr in Santa Clara. These and other elements such as Se, S, P, Cd, Mo and Ca where highly enriched in T. recurvata indicating a significant impact of anthropogenic sources in the air quality of both urban areas. Cluster analysis helped us associate most of the elements with an anthropogenic origin with three main pollution sources: road traffic, industrial emissions and oil combustion. The spatial variability was particularly useful to identify some of these sources including the emissions from diesel and fuel oil combustion in power stations, biomass burning and metallurgic industries. The results also showed that V and Ni were strongly associated to the oil combustion and that V/Ni ratio indices in both indicators can be used to trace this type of sources. The results presented in this study co
  • Autores: Morera Gomez, Yasser (Autor de correspondencia); Alonso-Hernandez, C. M.; Santamaría Ulecia, Jesús Miguel; et al.
    Revista: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
    ISSN 0944-1344 Vol.27 N° 2 2020 págs. 2184 - 2193
    Resumen
    Road dust is an indicator widely used when monitoring contamination and evaluating environmental and health risks in urban ecosystems. We conducted an exhaustive characterization of road dust samples coupling their chemical characteristics and stable isotope compositions (C and N) with the aim of evaluating the levels and spatial distribution of local contamination as well as to identify its main source(s) in the coastal city of Cienfuegos (Cuba). Results indicate that the concentrations of several elements(total nitrogen, S, Ca, V, Cu, Zn, Mo, Sn, Hg, and Pb) exceed the background values reported for both Cuban soils and the upper continental crust (UCC) and showed high variability among the sampling sites. We show that road dust contamination in Cienfuegos induces high associated ecological risks. Among the studied elements, Cd and Hg are the major contributors to environmental contamination in the city, mainly along busy roads and downtown.¿13Cand¿15N, coupled to a multivariate statistical analysis, help associate the studied elements to several local sources of contamination: mineral matter derived from local soils, cement plant and related activities, road pavement alteration, power plant, road traffic, and resuspension of particulate organic matter (POM). Our results suggest that incorporating the chemical and isotope monitoring of road dust may help implement more effective environmental management measures in order to reduce their adverse impact on ecosystems.
  • Autores: Alonso-Hernandez, C. M. (Autor de correspondencia); Fanelli, E.; Diaz-Asencio, M. ; et al.
    Revista: ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES
    ISSN 1025-6016 Vol.56 N° 5 - 6 2020 págs. 654 - 672
    Resumen
    Carbon and nitrogen stable isotope compositions (delta 13C and delta 15N) of organic matter (OM) and total organic carbon to total nitrogen ratio (Corg/TN) in a sediment core collected in Sagua estuary (Cuba), were investigated to elucidate the origin of the Sedimentary OM (SOM) and changes in its main sources, over the last 100 years. Results showed almost constant values in the elemental and isotope composition of SOM from 1908 to 1970 with an abrupt change after 1970. From 1970 to 2005, delta 13C increased from -21.2 up to -19.3 parts per thousand, while delta 15N declined from 1.5 to values close to 0 parts per thousand. The output of the mass-balance model for the identification of OM sources indicated that delta 13C and Corg/TN values are generally influenced by marine Particulate OM (POM) sources. Between 1900 and 1970, the main OM source in sediments was marine POM (>85 %), with freshwater POM contributing ca. 15%. Since 1970, the establishment of the Alacranes Dam determined drastic environmental changes influencing the OM sources in the area. Mixing models pointed to seagrasses (79 %) as the main contributors to SOM in the first period, while since 1973 onward, the contribution of human-derived sources such as fertilizers and urban discharges became greater. This information can provide baseline data for the environmental management of the Sagua watershed.
  • Autores: Morera Gomez, Yasser (Autor de correspondencia); Alonso-Hernandez, C. M.; Widory, D.; et al.
    Revista: ATMOSPHERIC POLLUTION RESEARCH
    ISSN 1309-1042 Vol.11 N° 7 2020 págs. 1091 - 1098
    Resumen
    This study investigates the contents, distribution patterns, and sources of lanthanoid elements (La to Lu) in aerosols with an aerodynamic diameter <= 10 mu m (PM10) in a coastal Caribbean region in order to better constrain the origin of the atmospheric PM contamination. We sampled and analysed PM10 aerosols during 2015 simultaneously at a rural and an urban site in Cienfuegos (Cuba) as well as particles samples from regional contamination sources. Results showed that the sum of the studied lanthanoids concentrations ranged from 0.03 to 13.42 ng m(-3) and from 0.51 to 18.75 ng m(-3) at the rural and the urban site, respectively. Time variations for the lanthanoid concentrations displayed similar trends and showed that the highest concentrations corresponded to the influence of the African dust for both sites, but presented distinct variability and lower concentrations when dust intrusions were less frequent. The lanthanoid distribution patterns in the rural and urban sites were significantly different, due to the impact of different local combustion sources. Our results were comforted by comparing the degree of fractionation of the lighter and heavier lanthanoids and the delta Eu and delta Ce anomalies between our PM10 samples and those of the local sources of contamination. Ultimately, we highlight the added value of lanthanoid elements as reliable indicators for discriminating emission sources and for tracking the origin of atmospheric particulate matter.
  • Autores: Morera Gomez, Yasser (Autor de correspondencia); Alonso-Hernandez, C. M. ; Cartas-Aguila, H. A.; et al.
    Revista: ATMOSPHERIC RESEARCH
    ISSN 0169-8095 Vol.243 2020 págs. 105038
    Resumen
    In this study, PM10 aerosol samples were collected at 4 urban and 1 rural sites in the region of Cienfuegos (Cuba) and analyzed for their chemical compositions (total carbon (TC), total nitrogen (TN), NH4+, Cl-, NO3- and SO42-) and their stable carbon (delta C-13) and nitrogen (delta N-15), and radioactive (Pb-210, Be-7, Cs-137 and K-40) isotope systematics, in order to better constrain both their sources of pollution and their atmospheric dynamics. The average PMic, concentrations varied from 21.67 +/- 8.54 mu g.m(-3) at the rural site to 39.01 +/- 8.23 mu g m(-3) at an urban site characterized by high road traffic. Chemical compositions showed low variability and similar abundances of the ionic species, but we observed strong correlations between i) NH4+ and SO42- that indicates the formation of secondary ammonium bisulfate (NH4HSO4), and ii) between PM10, and TC highlighting the significant influence of carbonaceous aerosols. We are reporting here the first Pb-210 aerosol concentrations in this region and demonstrate that, coupled with the corresponding Be-7 concentrations, they allow characterizing the dynamics of the regional continental air masses. delta C-13 values in PM10, appear to be controlled by i) emissions from different types of combustion sources, including fossil fuel and biomass burning and ii) carbonate inputs from the industrial activities located around the limestone quarries, east of the city.
  • Autores: Ciganda, V. S. (Autor de correspondencia); López Aizpún, María; Repullo, M. A.; et al.
    Revista: JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
    ISSN 1436-8730 Vol.182 N° 1 2019 págs. 40 - 47
    Resumen
    In grassland systems, cattle and sheep urine patches are recognized as nitrous oxide (N2O) emission hot spots due to the high urinary nitrogen (N) concentrations. Hippuric acid (HA) is one of the constituents of ruminant urine that has been reported as a natural inhibitor of soil N2O emissions. The aim of this study was to examine the potential for elevated ruminant urine HA concentrations to reduce N2O emissions, in situ, on an acidic heavy clay soil under poorly drained conditions (WFPS > 85%). A randomized complete block design experiment with three replications and four treatments was conducted using the closed-static-flux chamber methodology. The four treatments were applied inside the chambers: control with no artificial urine application (C), control artificial urine (U), and enriched artificial urine with two rates of HA (55.8 and 90mM, U+HA1, U+HA2). Soil inorganic-N, soil dissolved organic carbon (DOC), soil pH as well as N2O and methane (CH4) fluxes were monitored over a 79-d period. Although N2O emissions were not affected by the HA enriched urine treatments, U+HA2 positively affected the retention of N as NH4+ until day 3, when the soil pH dropped to values < 5. Subsequently, as a consequence of rainfall events and soil acidification, it is likely that leaching or sorption onto clay reduced the efficacy of HA, masking any treatment differential effect on N2O emissions. Moreover, CH4 fluxes as well as DOC results reflected the soil anaerobic conditions which did not favour nitrification processes. Further research is needed to determine the fate of HA into the soil which might clarify the lack of an in situ effect of this compound.
  • Autores: Santiago, J. L. (Autor de correspondencia); Buccolieri, R.; Rivas, E.; et al.
    Revista: SUSTAINABLE CITIES AND SOCIETY
    ISSN 2210-6707 Vol.48 N° 101559 2019 págs. 1 - 18
    Resumen
    With the objective of reducing population exposure, vegetation barriers composed by hedges and/or trees are usually located near roads to protect pedestrians from traffic-related pollutants. The main objective of this study is to quantify the effectiveness of this type of barriers. Black Carbon (BC) is used an indicator of the effectiveness of vegetation barrier and its concentration reduction behind the barrier is studied. Computational Fluid Dynamics (CFD) modelling, previously validated against BC experimental data across a vegetation barrier located in an avenue of Pamplona (Spain), is applied to simulate different barrier configurations. Additionally, the contribution of each vegetation effect (aerodynamic and deposition) on this reduction, as well as its sensitivity to different deposition velocities, are investigated. Results show barriers with hedge and trees are effective to locally reduce BC concentrations and suggest that the presence of trees is more crucial in reducing concentration rather than the hedge size or density. At 15 m from road in the presence of a row of trees and a 2 m-height and 2 m-width hedge the average concentration reduction percentage ranges between 45% and 66% (depending on deposition velocity) with respect to the case without vegetation barrier.
  • Autores: Gomez-Moreno, F. J. (Autor de correspondencia); Artinano, B. ; Díaz Ramiro, E.; et al.
    Revista: ENVIRONMENTAL POLLUTION
    ISSN 0269-7491 Vol.247 2019 págs. 195 - 205
    Resumen
    This work presents the main results of two experimental campaigns carried out in summer and winter seasons in a complex pollution hotspot near a large park, El Retiro, in Madrid (Spain). These campaigns were aimed at understanding the microscale spatio-temporal variation of ambient concentration levels in areas with high pollution values to obtain data to validate models on the effect of urban trees on particulate matter concentrations. Two different measuring approaches have been used. The first one was static, with instruments continuously characterizing the meteorological variables and the particulate matter concentration outside and inside the park. During the summer campaign, the particulate matter concentration was clearly influenced by a Saharan dust outbreak during the period 23 June to 10 July 2016, when most of the particulate matter was in the fraction PM2.5-10. During the winter campaign, the mass concentrations were related to the meteorological conditions and the high atmospheric stability. The second approach was a dynamic case with mobile measurements by portable instruments. During the summer campaign, a DustTrak instrument was used to measure PM10 and PM2.5 in different transects close to and inside the park at different distances from the traffic lane. It was observed a decrease in the concentrations up to 25% at 20 m and 50% at 200 m. High PK10 values were linked to dust resuspension caused by recreational activities and to a Saharan dust outbreak.
  • Autores: Rivas, E. (Autor de correspondencia); Santiago, J. L.; Lechón, Y.; et al.
    Revista: SCIENCE OF THE TOTAL ENVIRONMENT
    ISSN 0048-9697 Vol.649 2019 págs. 1362 - 1380
    Resumen
    A methodology based on CFD-RANS simulations (WA CFD-RANS, Weighted Averaged Computational Fluid Dynamic-Reynolds-Averaged Navier-Stokes simulations) which includes appropriate modifications, has been applied to compute the annual, seasonal, and hourly average concentration of NO2 and NOX throughout the city of Pamplona (Spain) at pedestrian level during 2016. The results have been evaluated using measurements provided both by the city's network of air quality monitoring stations and by a network of mobile microsensors carried around by cyclists during their daily commutes, obtaining a maximum relative error lower than 30% when computing NO2 annual average concentrations. The model has taken into account the actual city layout in three dimensions, as well as the traffic emissions. The resulting air pollutionmaps provided information critical for studying the traffic-related health effects ofNO2 and their associated external costs in the city of Pamplona and the spatial representativeness of the current network of air quality monitoring stations (it has not been carried out for an entire city to date). The developed methodology can be applied to similar cities, providing useful information for the decision-makers.
  • Autores: Morera Gomez, Yasser (Autor de correspondencia); Santamaría Ulecia, Jesús Miguel; Elustondo Valencia, David; et al.
    Revista: ATMOSPHERIC ENVIRONMENT
    ISSN 1352-2310 Vol.202 2019 págs. 93 - 104
    Resumen
    Atmospheric deposition is considered to be the major pathway by which substances from the atmosphere enter to the terrestrial and aquatic ecosystems. This study constitutes the first exhaustive report on trace metal deposition in Cuba and is aimed to determine the monthly atmospheric flux of 47 major and trace elements in a Caribbean coastal site and investigate the main sources contributing to deposition.
  • Autores: López Aizpún, María; Arango-Mora, C.; Santamaría Elola, Carolina; et al.
    Revista: SOIL BIOLOGY AND BIOCHEMISTRY
    ISSN 0038-0717 Vol.116 2018 págs. 378 - 387
    Resumen
    The present work was carried out to assess the effect of atmospheric ammonia (NH3) on soil physicochemical properties, soil enzymatic activities (ß-glucosidase -ß-GLU-, nitrate reductase ¿NR-, urease ¿UR-, protease ¿PRO-, acid phosphatase ¿PHO-, dehydrogenase ¿DHA-), soil microbial biomass and soil respiration. The study was conducted along a NH3 gradient in a Q. pubescens Milld. forest in the vicinity of two livestock farms. Because of NHy (NHy: NH3 and NH4+) deposition, N saturation was detected up to 330 m from the farms. This excess of N led to a decrease in soil C:N and an increase in soil nitrification processes, which resulted in an accumulation of the heavy N isotope (15N) in the soil. N saturation was also reflected in the activity of NR enzyme, which was inhibited. On the other hand, while UR enzyme was inhibited close to the farms possibly due to the high amount of N-NH4+ resulting from the hydrolysis of NH3, PRO activity was stimulated by the presence of organic nitrogen compounds and the need of soil organisms to meet the C demand. In addition, the activity of PHO and ß-GLU enzymes was regulated by the relative amount of C and P that organisms need. Regarding biological variables, enhanced NH3 reduced soil microbial biomass and biomass respiratory efficiency. Finally, soil enzyme activities and soil microbial biomass have proved to be good biological indicators of soil quality.
  • Autores: Morera Gomez, Yasser (Autor de correspondencia); Santamaría Ulecia, Jesús Miguel; Elustondo Valencia, David; et al.
    Revista: SCIENCE OF THE TOTAL ENVIRONMENT
    ISSN 0048-9697 Vol.642 2018 págs. 723 - 732
    Resumen
    The constant increase of anthropogenic emissions of aerosols, usually resulting from a complex mixture from various sources, leads to a deterioration of the ambient air quality. The stable isotope compositions (delta C-13 and delta N-15) of total carbon (TC) and nitrogen (TN) in both PM10 and emissions from potential sources were investigated for first time in a rural and an urban Caribbean costal sites in Cuba to better constrain the origin of the contamination. Emissions from road traffic, power plant and shipping emissions were discriminated by coupling their C and N contents and corresponding isotope signatures. Other sources (soil, road dust and cement plant), in contrast, presented large overlapping ranges for both C and N isotope compositions. delta C-13(PM10) isotope compositions in the rural (average of -25.4 +/- 1.2 parts per thousand) and urban (average of -24.8 +/- 1.2 parts per thousand) sites were interpreted as a mixture of contributions from two main contributors: i) fossil fuel combustion and ii) cement plant and quarries. Results also showed that this last source is impacting more air quality at the urban site. A strong influence from local wood burning was also identified at the rural site. These conclusions were comforted by a statistical analysis using a conditional bivariate probability function. TN and delta N-15 values from the urban site demonstrated that nitrogen in PM10 was generated by secondary processes through the formation of (NH4)(2)SO4.
  • Autores: Barre, J. (Autor de correspondencia); Deletraz, G.; Sola Larrañaga, Cristina; et al.
    Revista: ENVIRONMENTAL POLLUTION
    ISSN 0269-7491 Vol.243 N° Part B 2018 págs. 961 - 971
    Resumen
    Multi-elemental isotopic approach associated with a land-use characteristic sampling strategy may be relevant for conducting biomonitoring studies to determine the spatial extent of atmospheric contamination sources. In this work, we investigated how the combined isotopic signatures in epiphytic lichens of two major metallic pollutants, lead (206Pb/207Pb) and mercury (¿202Hg, ¿199Hg), together with the isotopic composition of nitrogen and carbon (¿15N, ¿13C), can be used to better constrain atmospheric contamination inputs. To this end, an intensive and integrated sampling strategy based on land-use characteristics (Geographic information system, GIS) over a meso-scale area (Pyrénées-Atlantiques, SW France) was applied to more than 90 sampling stations. To depict potential relationships between such multi-elemental isotopic fingerprint and land-use characteristics, multivariate analysis was carried out. Combined Pb and Hg isotopic signatures resolved spatially the contribution of background atmospheric inputs from long range transport, from local legacy contamination (i.e. Pb) or actual industrial inputs (i.e. Pb and Hg from steel industry). Application of clustering multivariate analysis to all studied isotopes provided a new assessment of the region in accordance with the land-use characteristics and anthropogenic pressures.
  • Autores: Nickel, S. (Autor de correspondencia); Schroder, W. ; Schmalfuss, R.; et al.
    Revista: ENVIRONMENTAL SCIENCES EUROPE
    ISSN 2190-4715 Vol.30 N° 53 2018
    Resumen
    BackgroundThis paper aims to investigate the correlations between the concentrations of nine heavy metals in moss and atmospheric deposition within ecological land classes covering Europe. Additionally, it is examined to what extent the statistical relations are affected by the land use around the moss sampling sites. Based on moss data collected in 2010/2011 throughout Europe and data on total atmospheric deposition modelled by two chemical transport models (EMEP MSC-E, LOTOS-EUROS), correlation coefficients between concentrations of heavy metals in moss and in modelled atmospheric deposition were specified for spatial subsamples defined by ecological land classes of Europe (ELCE) as a spatial reference system. Linear discriminant analysis (LDA) and logistic regression (LR) were then used to separate moss sampling sites regarding their contribution to the strength of correlation considering the areal percentage of urban, agricultural and forestry land use around the sampling location. After verification LDA models by LR, LDA models were used to transform spatial information on the land use to maps of potential correlation levels, applicable for future network planning in the European Moss Survey.ResultsCorrelations between concentrations of heavy metals in moss and in modelled atmospheric deposition were found to be specific for elements and ELCE units. Land use around the sampling sites mainly influences the correlation level. Small radiuses around the sampling sites examined (5km) are more relevant for Cd, Cu, Ni, and Zn, while the areal percentage of urban and agricultural land use within large radiuses (75-100km) is more relevant for As, Cr, Hg, Pb, and V. Most valid LDA models pattern with error rates of <40% were found for As, Cr, Cu, Hg, Pb, and V. Land use-dependent predictions of spatial patterns split up Europe into investigation areas revealing potentially high (=above-average) or low (=below-average) correlation coefficients.ConclusionsLDA is an eligible method identifying and ranking boundary conditions of correlations between atmospheric deposition and respective concentrations of heavy metals in moss and related mapping considering the influence of the land use around moss sampling sites.
  • Autores: Barre, J. (Autor de correspondencia); Amouroux, D.; Santamaría Ulecia, Jesús Miguel; et al.
    Revista: ENVIRONMENTAL POLLUTION
    ISSN 0269-7491 Vol.243 2018 págs. 961 - 971
    Resumen
    Multi-elemental isotopic approach associated with a land-use characteristic sampling strategy may be relevant for conducting biomonitoring studies to determine the spatial extent of atmospheric contamination sources. In this work, we investigated how the combined isotopic signatures in epiphytic lichens of two major metallic pollutants, lead (Pb-206/(207) Pb) and mercury (delta Hg-202, Delta Hg-199) together with the isotopic composition of nitrogen and carbon (delta N-15, delta C-13), can be used to better constrain atmospheric contamination inputs. To this end, an intensive and integrated sampling strategy based on land-use characteristics (Geographic information system, GIS) over a meso-scale area (Pyrenees-Atlantiques, SW France) was applied to more than 90 sampling stations. To depict potential relationships between such multi-elemental isotopic fingerprint and land-use characteristics, multivariate analysis was carried out. Combined Pb and Hg isotopic signatures resolved spatially the contribution of background atmospheric inputs from long range transport, from local legacy contamination (i.e. Pb) or actual industrial inputs (i.e. Pb and Hg from steel industry). Application of clustering multivariate analysis to all studied isotopes provided a new assessment of the region in accordance with the land-use characteristics and anthropogenic pressures.
  • Autores: Morera Gomez, Yasser; Elustondo Valencia, David; Lasheras Adot, María Esther; et al.
    Revista: ATMOSPHERIC ENVIRONMENT
    ISSN 1352-2310 Vol.192 2018 págs. 182 - 192
    Resumen
    The deterioration of the air quality is a global concern. Daily PM10 samples were simultaneously collected and chemically characterized at an urban and a rural site in Cienfuegos, Cuba between January 2015 and January 2016. A source apportionment study was conducted in order to identify and quantify the main contributions of both local and long-range sources. Concentrations of PM10 varied similarly at the urban and rural site, with annual averages of 35.4 and 24.8 ug m-3, respectively. The highest concentrations were observed between March and August at both sites, when a strong influence of Saharan dust was identified. The PM10 daily limit (50 ug m-3) established in the Cuban legislation for air quality was exceeded by 3 and 8 times in the rural and urban site, respectively. The chemical characterization of PM10 showed important contributions of mineral matter, total carbon and secondary inorganic compounds in the region, with the highest concentrations observed at the urban site. Marine contribution, by contrast, was higher at the rural site. The highest EFs were obtained for the typical road traffic tracers Mo and Cu. Positive matrix factorization (PMF) analysis coupled with conditional bivariate probability function (CBPF) and concentration weighted trajectory (CWT) identified 5 main sources in the studied sites: Saharan intrusions, marine aerosol, combustion sources and secondary aerosols, road traffic and cement plant.
  • Autores: García-Gómez, H.; Izquieta Rojano, Sheila; Aguillaume, L.; et al.
    Revista: ENVIRONMENTAL POLLUTION
    ISSN 0269-7491 Vol.243 N° Part A 2018 págs. 427 - 436
    Resumen
    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 and Stomatal Exchange) model, was used to estimate total dry deposition of inorganic N air pollutants in four holm oak forests under Mediterranean conditions in Spain. The estimated total deposition varied among the sites and matched the geographical patterns previously found in model estimates: higher deposition was determined at the northern site (28.9 kg N ha-1 year-1) and at the northeastern sites (17.8 and 12.5 kg N ha-1 year-1) than at the central-Spain site (9.4 kg N ha-1 year-1). On average, the estimated dry deposition of atmospheric N represented 77% ± 2% of the total deposition of N, of which surface deposition of gaseous and particulate atmospheric N averaged 10.0 ± 2.9 kg N ha-1 year-1 for the four sites (58% of the total deposition), and stomatal deposition of N gases averaged 3.3 ± 0.8 kg N ha-1 year-1 (19% of the total deposition). Deposition of atmospheric inorganic N was dominated by the surface deposition of oxidized N in all the forests (means of 54% and 42% of the dry and total deposition, respectively).
  • Autores: Izquieta Rojano, Sheila; López Aizpún, María; Irigoyen Iparrea, Juan José; et al.
    Revista: SCIENCE OF THE TOTAL ENVIRONMENT
    ISSN 0048-9697 Vol.619-620 2018 págs. 883 - 895
    Resumen
    Ammonia (NH3) emissions are linked to eutrophication, plant toxicity and ecosystem shifts from N to P limitation. Bryophytes are key components of terrestrial ecosystems, yet highly sensitive to N deposition. Hence, physiological responses of mosses may be indicative of NH3-related impacts, and thus useful to foresee future ecosystem damages and establish atmospheric Critical Levels (CLEs). In this work, samples of Hypnum cupressiforme Hedw. were seasonally collected along a well-defined NH3 concentration gradient in an oak woodland during a one-year period. We performed a comprehensive evaluation of tissue chemistry, stoichiometry, metabolic enzymes, antioxidant response, membrane damages, photosynthetic pigments, soluble protein content and N and C isotopic fractionation. Our results showed that all the physiological parameters studied (except P, K, Ca and C) responded to the NH3 gradient in predictable ways, although the magnitude and significance of the response were dependent on the sampling season, especially for enzymatic activities and pigments content. Nutritional imbalances, membrane damages and disturbance of cellular C and N metabolism were found as a consequence to NH3 exposure, being more affected the mosses more exposed to the barn atmosphere. These findings suggested significant implications of intensive farming for the correct functioning of oak woodlands and highlighted the importance of seasonal dynamics in the study of key physiological processes related to photosynthesis, mosses nutrition and responses to oxidative stress. Finally, tissue N showed the greatest potential for the identification of NH3-related ecological end points (estimated CLE = 3.5 mu g m(-3)), whereas highly scattered physiological responses, although highly sensitive, were not suitable to that end.
  • Autores: Lizarraga Pérez, Elena; Santamaría Elola, Carolina; Sola Larrañaga, Cristina
    ISSN 978-84-313-3418-5 2019
  • Autores: Santamaría Ulecia, Jesús Miguel (Editor); Ariño Plana, Arturo; León Anguiano, Bienvenido; et al.
    ISSN 978-84-947947-7-3 2018
    Resumen
    This book collects the main outcomes that were generated during the implementation of the LIFE+RESPIRA project (LIFE13 ENV/ES/000417), carried out in the city of Pamplona, Navarra, Spain. The research was conducted by a cross-functional team made up of more than 30 researchers belonging to three entities: The University of Navarra, the Centre for Energy, Environmental and Technological Research (CIEMAT) and Environmental Management of Navarra (GAN-NIK).

Proyectos desde 2018

  • Título: Equipo UNAV_P06_CENTRI Plataforma multimodo Centri acoplada a un cromatógrafo de gases y un espectrómetro de masas
    Código de expediente: 0011-1508-2020-000008 UNAV_P06
    Investigador principal: JESUS MIGUEL SANTAMARIA ULECIA.
    Financiador: GOBIERNO DE NAVARRA
    Convocatoria: 2020 GN adquisición de equipamiento e infraestructuras de I+D
    Fecha de inicio: 27-07-2020
    Fecha fin: 15-11-2020
    Importe concedido: 195.108,50 €
    Fondos FEDER: NO
  • Título: Impacto del depósito de N en zonas vulnerables españolas: tendencias temporales e interacciones a nivel de ecosistema y paisaje
    Código de expediente: CGL2017-84687-C2-2-R
    Investigador principal: DAVID ELUSTONDO VALENCIA.
    Financiador: MINISTERIO DE CIENCIA E INNOVACIÓN
    Convocatoria: 2017 MINECO RETOS INVESTIGACION. PROYECTOS DE I+D+i
    Fecha de inicio: 01-01-2018
    Fecha fin: 30-09-2021
    Importe concedido: 145.200,00 €
    Fondos FEDER: SI
  • Título: REPLIM (Red de Observatorios de Ecosistemas Sensibles al Cambio climático en el Pirineo)
    Código de expediente:
    Investigador principal: JESUS MIGUEL SANTAMARIA ULECIA
    Financiador: POCTEFA
    Convocatoria: INTERREG POCTEFA 2015
    Fecha de inicio: 01-07-2016
    Fecha fin: 30-06-2019
    Importe concedido: 81.250,65 €
    Fondos FEDER: SI