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Memorias de investigación
Artículos en revistas:
Heterogeneous responses to ozone and nitrogen alter the species composition of Mediterranean annual pastures
Año:2016
Áreas de investigación
  • Ciencias naturales y ciencias de la salud
Datos
Descripción
Air pollution represents a threat to biodiversity throughout the world and particularly in the Mediterranean area, where high tropospheric ozone (O3) concentrations and atmospheric nitrogen (N) deposition are frequently recorded. Mediterranean annual pastures are among the most important ecosystems in southern Europe due to their high biodiversity and extension. Aiming to study the responses of these communities to the main atmospheric pollutants in the Mediterranean region, an experimental study was performed in an open-top chamber (OTC) facility. A mixture of six species representative of annual pastures was grown under field conditions inside the OTC. Plants were exposed for 39 days to four O3 treatments and three doses of N. The species responded heterogeneously to both factors. Legumes did not react to N but were very sensitive to O3: Trifolium species responded negatively, while Ornithopus responded positively, taking advantage of the greater sensitivity of clovers to O3. The grasses and the herb were more tolerant of O3 and grasses were the most responsive to N. Significant interactions between factors indicated a loss of effectiveness of N in O3-polluted atmospheres and an ability of O3 to counterbalance the damage induced by N input, but both effects were dependent on O3 and N levels. The inclusion of plant competition in the experimental design was necessary to reveal results that would otherwise be missed, such as the positive growth responses under elevated O3 levels. Surprisingly, competition within the legume family played the most important role in the overall response of the annual community to O3. Both tropospheric O3 and N deposition should be considered important drivers of the structure and biodiversity of Mediterranean annual pastures.
Internacional
Si
JCR del ISI
Si
Título de la revista
Oecologia
ISSN
0029-8549
Factor de impacto JCR
3,093
Información de impacto
Datos JCR del año 2014
Volumen
DOI
10.1007/s00442-016-3628-z
Número de revista
Desde la página
1
Hasta la página
13
Mes
SIN MES
Ranking
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Hector Calvete Sogo (UPM)
  • Autor: Ignacio Gonzalez Fernandez
  • Autor: Javier Sanz
  • Autor: Susana Elvira
  • Autor: Rocio Alonso
  • Autor: Hector Garcia Gomez (UPM)
  • Autor: Miguel Angel Ibañez Ruiz (UPM)
  • Autor: Victoria Bermejo Bermejo
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Economía Agraria, Estadística y Gestión de Empresas
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