Project Grant 2241389

Award Date 5/1/23
Completion Date 4/30/26
Dollars Obligated $184K
Federal Grant Program
47.074
Assistance Type
Project Grant
Place of Performance
College Station, TX 77843, USA
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This National Science Foundation Project Grant of $184,289 supports research at Texas A&M Agrilife Research to advance understanding of how iron impacts the temperature sensitivity of heterotrophic respiration in humid tropical soils. The award period is from May 1, 2023 through April 30, 2026.

The research leverages experiments and process-based modeling at the Tropical Responses to Altered Climate Experiment in Puerto Rico's Luquillo Rainforest. Comprehensive experiments with soils sampled from control and warmed plots will inform their biogeochemical response to temperature gradients and changing iron states. A process-based soil model will analyze observations and mechanistically explain the response to changing temperatures.

The work aims to elucidate the fundamental processes regulating soil microorganism functions and carbon dioxide production. It also seeks to determine the mechanisms affecting soils' ability to store and stabilize carbon dioxide over time. The research has implications for assessing climate change mitigation and adaptation strategies in humid tropical forests under NSF's Biological Sciences program (CFDA 47.074).

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