As the Earth's climate warms over the next century, ecosystems throughout the northern hemisphere will be exposed to elevated rates of atmospheric nitrogen (N) deposition. Understanding this complex environmental change lies at the heart of our ability to anticipate the degree to which forests will sequester human-produced carbon dioxide from the atmosphere. An interdisciplinary team of scientists will investigate the interaction between climate warming and simulated atmospheric N deposition using a long-term, regional-based, field experiment located in a sugar maple-dominated forest ecosystem common over eastern North America. During the past 18 years, simulated atmospheric nitrogen deposition at rates expected to occur by 2050 have increased tree growth and slowed the decay of dead leaves and roots, increasing the amount of carbon stored in this wide-spread ecosystem. However, it is uncertain whether carbon storage will attain a higher equilibrium over the long-term as atmospheric nitrogen deposition increases or whether expected warming will counteract this effect. The proposed research will quantify the amounts of carbon stored in overstory trees, forest floor and soil over the next decade, allowing this team of scientists to test hypotheses regarding the interaction of climate warming and atmospheric nitrogen deposition on ecosystem carbon sequestration.

Using NSF support, this team will continue conducting the annual Global Change Teachers Institute. Through lectures and field-based learning, middle and high school teachers will continue to develop an understanding of the causes and ecological impacts of global environmental change, thereby bringing this information into science curricula.

Agency
National Science Foundation (NSF)
Institute
Division of Environmental Biology (DEB)
Application #
1251441
Program Officer
Matthew Kane
Project Start
Project End
Budget Start
2013-09-01
Budget End
2019-08-31
Support Year
Fiscal Year
2012
Total Cost
$113,945
Indirect Cost
Name
Regents of the University of Idaho
Department
Type
DUNS #
City
Moscow
State
ID
Country
United States
Zip Code
83844