USDA Forest Service

Pacific Southwest Research Station

 
Pacific Southwest
Research Station

800 Buchanan Street
Albany, CA 94710-0011
(510) 883-8830
United States Department of Agriculture Forest Service. USDA logo which links to the department's national site. Forest Service logo which links to the agency's national site.

Publications and Products

Title: Plant genetic variation drives geographic differences in atmosphere–plant–ecosystem feedbacks

Authors: Bayliss, Shannon L. J.; Mueller, Liam O.; Ware, Ian M.; Schweitzer, Jennifer A.; Bailey, Joseph K.

Date: 2020

Source Plant-Environment Interactions. 1(3): 166-180

Abstract: The objective of this study was to understand how genetic variation in a riparian species, Populus angustifolia, affects mass and energy exchange between the land and atmosphere across ~1,700 km of latitude of the western United States. To examine the potential for large‐scale land–atmosphere feedbacks in hydrologic processes driven by geographic differences in plant population traits, we use a physical hydrology model, paired field, and greenhouse observations of plant traits, and stable isotope compositions of soil, stem, and leaf water of P. angustifolia populations. Populations show patterns of local adaptation in traits related to landscape hydrologic functioning—a 47% difference in stomatal density in greenhouse conditions and a 74% difference in stomatal ratio in the field. Trait and stable isotope differences reveal that populations use water differently which is related to historical landscape hydrologic functioning (evapotranspiration and streamflow). Overall, results suggest that populations from landscapes with different hydrologic histories will differ in their ability to maintain favorable water balance with changing atmospheric demands for water, with ecosystem consequences.

Keywords: biomass, budyko, earth atmosphere feedback, eco-evo feedback, energy, stoma, water

View and print the publication (1.0 MB)

Citation

    Bayliss, Shannon L. J.; Mueller, Liam O.; Ware, Ian M.; Schweitzer, Jennifer A.; Bailey, Joseph K. 2020. Plant genetic variation drives geographic differences in atmosphere–plant–ecosystem feedbacks. Plant-Environment Interactions. 1(3): 166-180. https://doi.org/10.1002/pei3.10031.
Last Modified: February 19, 2021