IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
artículos
Título:
Field surveys for potential ozone bioindicator plant species in Argentina
Autor/es:
BERGWEILER, C.; CARRERAS, H. A.; WANNAZ, E.D.; RODRÍGUEZ, J.H.; TOSELLI, B.; OLCESE, L.; PIGNATA, M.L.
Revista:
ENVIRONMENTAL MONITORING AND ASSESSMENT
Editorial:
Springer
Referencias:
Año: 2008 vol. 138 p. 305 - 312
ISSN:
0167-6369
Resumen:
In Argentina no historical or present programs
exist specifically assessing ecosystem health
with respect to photochemical air pollution, although
phytotoxic concentrations of near-ground ozone have
been documented in recent years. Here we report our
preliminary findings on field observations of ozonelike
injury found in natural plant populations and
agroecosystems late in the 2005 growing season in
the Southern Hemisphere. Several possible ozone
bioinidicator plants which have not been previously
documented were observed to exhibit foliar symptoms
consistent with ozone-induced injury. Based on these
results we intend to expand field surveys and
complete the screening process for injury confirmation
of the plant species described here. For this and
future research we will be using controlled chamber
studies based in the US. Continuous monitoring of
tropospheric ozone does not currently take place in
the region of central Argentina. The combined
evidence provided by intermittent air quality sampling
and the presence of ozone-like injury to vegetation
indicates the need to establish air quality and ozone
biomonitoring networks in this region.