Nitrogen deposition in Spain : modeled patterns and threatened habitats within the Natura 2000 network
García-Gómez, Héctor (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (Espanya))
Garrido, Juan Luis (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (Espanya))
Vivanco, M. G. (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (Espanya))
Lassaletta, L. (Université de Paris VI)
Rábago, Isaura (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (Espanya))
Àvila i Castells, Anna (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Tsyrod, S. (Meteorologisk institutt)
Sánchez, G. (España. Ministerio de Agricultura, Alimentación y Medio Ambiente)
González Ortiz, A. (España. Ministerio de Agricultura, Alimentación y Medio Ambiente)
González-Fernández, Ignacio (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (Espanya))
Alonso, Rocío (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (Espanya))

Títol variant:	Nitrogen deposition in Spain : modeled patterns and potential implications for conservation
Data:	2014
Resum:	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 suitability of EMEP and CHIMERE air quality model systems as tools to identify those areas where effects of atmospheric N deposition could be occurring was tested. For this analysis, wet deposition of NO₃− and NH₄+ estimated with EMEP and CHIMERE model systems were compared with measured data for the period 2005-2008 obtained from different monitoring networks in Spain. Wet N deposition was acceptably predicted by both models, showing better results for oxidized than for reduced nitrogen, particularly when using CHIMERE. Both models estimated higher wet deposition values in northern and northeastern Spain, and decreasing along a NE-SW axis. Total (wet + dry) nitrogen deposition in 2008 reached maxima values of 19. 4 and 23. 0 kg N ha¯¹ year¯¹ using EMEP and CHIMERE models respectively. Total N deposition was used to estimate the exceedance of N empirical critical loads in the Natura 2000 network. Grassland habitats proved to be the most threatened group, particularly in the northern alpine area, pointing out that biodiversity conservation in these protected areas could be endangered by N deposition. Other valuable mountain ecosystems can be also threatened, indicating the need to extend atmospheric deposition monitoring networks to higher altitudes in Spain.
Ajuts:	European Commission 282910 Ministerio de Ciencia e Innovación CSD2008-00040 Ministerio de Ciencia e Innovación CGL2009-13188-C03-02
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Air quality model ; Alpine grasslands ; Critical load exceedance ; Monitoring network ; Natura 2000 network ; Nitrogen deposition
Publicat a:	Science of the total environment, Vol. 485-486 (July 2014) , p. 450-460, ISSN 1879-1026

DOI: 10.1016/j.scitotenv.2014.03.112

Post-print 29 p, 1.0 MB

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