Year: 2007
Type: article
Abstract: How global climate change will affect plant-soil interactions remains uncertain, including the effect of increasing heat stress (e.g., summer heat waves).We investigated the effects of heat waves (5 days at ambient plus 5 or 10 °C) on the plant's transfer of carbon (C) to soil and plant's absorption of nitrogen (N) from soil, and on soil microbial communities, in both laboratory (Andropogon gerardii) and field (A.gerardii and Solidago canadensis in a tall-grass prairie at the University of Toledo Stranahan Arboretum, Toledo, Ohio).• The heat waves did not affect plant water status and net photosynthesis of recently-expanded leaves in the laboratory; in the field, heat caused stomatal conductance in Andropogon to increase and leaf water potential to decrease.Solidago maintained the same water potential as it decreased stomatal conductance in heated plots.• Shoot mass was unaffected in the laboratory, but root mass and root:shoot ratio increased.In the field, shoot mass increased only for Solidago.A decrease in N Dedicated to All the known and unknown species of the world that do not have technology and greed.
Author: Kumar P. Mainali
Institution: University of Toledo
Language: English
Subfield: Soil Science
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W2202136926