Assessment of the effects of ozone exposure and plant competition on the reproductive ability of three therophytic clover species from Iberian pastures

Gimeno, Benjamín; Bermejo, V.; Sanz, J.; Torre Llorente, Daniel de la y Gil, J.M. (2004). Assessment of the effects of ozone exposure and plant competition on the reproductive ability of three therophytic clover species from Iberian pastures. "Atmospheric Environment", v. 38 (n. 15); pp. 2295-2303. ISSN 1352-2310. https://doi.org/10.1016/j.atmosenv.2003.10.062.

Descripción

Título: Assessment of the effects of ozone exposure and plant competition on the reproductive ability of three therophytic clover species from Iberian pastures
Autor/es:
  • Gimeno, Benjamín
  • Bermejo, V.
  • Sanz, J.
  • Torre Llorente, Daniel de la
  • Gil, J.M.
Tipo de Documento: Artículo
Título de Revista/Publicación: Atmospheric Environment
Fecha: Mayo 2004
Volumen: 38
Materias:
Escuela: E.T.S.I. Agrónomos (UPM) [antigua denominación]
Departamento: Biología Vegetal [hasta 2014]
Grupo Investigación UPM: LPF-TAGRALIA
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

Ozone (O3) phytototoxicity has been reported on a wide range of crops and wild Central European plantspecies, however no information has been provided regarding the sensitivity of plantspecies from dehesa Mediterranean therophytic grasslands in spite of their great plantspecies richness and the high O3 levels that are recorded in this area. A study was carried out in open-top chambers (OTCs) to assess the effects of O3 and competition on the reproductiveability of threecloverspecies: Trifolium cherleri, Trifolium subterraneum and Trifolium striatum. A phytometer approach was followed, therefore plants of these species were grown in mesoscosms composed of monocultures of four plants of each species, of threeplants of each species competing against a Briza maxima individual or of a single plant of each cloverspecies competing with threeB. maximaplants. Three O3 treatments were adopted: charcoal filtered air (CFA), non-filtered air (NFA) and non-filtered air supplemented with 40 nl l−1 of O3 (NFA+). The different mesocosms were exposed to the different O3 treatments for 45 days and then they remained in the open. Ozoneexposure caused reductions in the flower biomass of the threecloverspecies assessed. In the case of T. cherleri and T. subterraneum this effect was found following their exposure to the different O3 treatments during their vegetative period. An attenuation of these effects was found when the plants remained in the open. Ozone-induced detrimental effects on the seed output of T. striatum were also observed. The flower biomass of the cloverplants grown in monocultures was greater than when competing with one or threeB. maxima individuals. An increased flower biomass was found in the CFA monoculture mesocosms of T. cherleri when compared with the remaining mesocosms, once the plants were exposed in the open for 60 days. The implications of these effects on the performance of dehesa acid grasslands and for the definition of O3 critical levels is discussed

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ID de Registro: 11418
Identificador DC: http://oa.upm.es/11418/
Identificador OAI: oai:oa.upm.es:11418
Identificador DOI: 10.1016/j.atmosenv.2003.10.062
Depositado por: Memoria Investigacion
Depositado el: 24 Jul 2012 12:28
Ultima Modificación: 20 Abr 2016 19:30
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