Updates of Critical Load Research from the EPA, NPS, and USFS
Christopher Clark1, Rebecca Dalton2, Jesse Miller3, Tara Greaver4, Linda Pardo5, Michael Bell6, Linda Geisr7, Jeff Herrick8, Karen Dillman9, Nathan Pavlovic10, Jennifer Phelan11, Kemen Austin12, Todd McDonnell13
There are several lines of research ongoing within the EPA, NPS, and USFS to advance critical load science and information in the U.S. This talk will provide an overview of a portion of that body of work and a summary of where we may be headed. Topics covered include: (1) several recent advances to tree critical loads (regional variation, inclusion of ozone and climate change as drivers, and using machine learning to expand our inference), (2) progress from CLAD working groups on characterizing uncertainty in critical loads, (3) recent advances in herb critical loads to use PROPS to examine scenarios of change across protected areas, (4) recent advances in lichen critical loads to support decision making, and (5) new tools and handbooks coming online to support decision making and stakeholder groups.
1 US Environmental Protection Agency, clark.christopher@epa.gov
2 US Environmental Protection Agency, dalton.rebecca@epa.gov
3 US Environmental Protection Agency, miller.jesse.n@epa.gov
4 US Environmental Protection Agency, greaver.tara@epa.gov
5 US Forest Service, linda.pardo@usda.gov
6 National Park Service, mdbell@nps.gov
7 US Forest Service, linda.geiser@usda.gov
8 US Environmental Protection Agency, herrick.jeffrey@epa.gov
9 US Forest Service, karen.dillman@usda.gov
10 Sonoma Tech, npavlovic@sonomatech.com
11 RTI International, jenphelan@rti.org
12 RTI International, kaustin@rti.org
13 E&S Environmental Chemistry, todd.mcdonnell@esenvironmental.com