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Surface Dust Impacts on Gas Exchange in Mojave Desert Shrubs

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Sharifi, M Rasoul, Gibson, Arthur C, and Rundel, Philip W, Surface Dust Impacts on Gas Exchange in Mojave Desert Shrubs: .

Summary

1. Windblown dust, an environmental problem in many disturbed arid lands, has the potential to affect the physiological performance of desert shrubs. Physiological parameters of gas exchange for three species (Larrea tridentata, Hymenoclea salsola and Atriplex canescens) were measured at a Mojave Desert site, at which both undisturbed and heavily dusted individual shrubs occurred. 2. Maximum rates of net photosynthesis (A) of dusted organs were reduced to 21% of those of control plants in resinous leaflets of Larrea, to 44% in resinous leaves and photosynthetic stems of Hymenoclea, and to 58% in non-resinous C4 leaves of Atriplex, which have vesiculated trichomes. Dusted plants of all three species showed reduced maximum leaf conductance [...]

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From Source - Mendeley RIS Export <br> On - Wed Sep 19 08:03:42 MDT 2012

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Title Citation Surface Dust Impacts on Gas Exchange in Mojave Desert Shrubs

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