Interactions of forests with secondary air pollutants: Some challenges for future research

Cape, J N.. 2008 Interactions of forests with secondary air pollutants: Some challenges for future research. Environmental Pollution, 155. 391-397.

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The effects of ozone and other photochemical oxidants on individual trees have been studied for several decades, but there has been much less research on the potential effects on entire forest ecosystems. Given that ozone and other oxidants affect the production and subsequent fate of biogenic volatile organic compounds that act as signalling molecules, there is a need for more detailed study of the role of oxidants in modifying trophic interactions in forests. Deposition of fine particulates to forests may act as a source of nutrients, but also changes leaf surface properties, increasing the duration of surface wetness and modifying the habitat for epiphytic organisms, leading to increased risks from pathogens. Even where this pathway contributes a relatively small input of nutrients to forests, the indirect effects on canopy processes and subsequent deposition to the forest floor in throughfall and litter may play a more important role that has yet to be fully investigated.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: CEH Programmes pre-2009 publications > Biogeochemistry > BG03 Quantifying the growing threat to plant and human health from ground level ozone
UKCEH and CEH Sections/Science Areas: Billett (to November 2013)
ISSN: 0269-7491
Additional Keywords: Ozone; Biogenic VOCs; Molecular signalling; Surface wetness; Aerosol deposition
NORA Subject Terms: Ecology and Environment
Atmospheric Sciences
Date made live: 02 Sep 2008 08:00 +0 (UTC)

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