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The Role Of Amino Acids In The Nitrogen Cycle Of Peatlands, Tia Scarpelli
The Role Of Amino Acids In The Nitrogen Cycle Of Peatlands, Tia Scarpelli
Dissertations, Master's Theses and Master's Reports
Future release of carbon from peatlands in response to climate change may be impacted by nitrogen limitation. The current study considers the role of amino acids as a nitrogen source in peatlands. The total free amino acid (TFAA) concentration for peats ranged from 0-2.3 µM, and leucine was the primary contributor. The dominance of sedge or ericaceous shrub plant types did not significantly impact the TFAA pool. Ammonium concentrations were much greater than TFAA and nitrate concentrations. TFAA concentrations were greatest in spring and least in fall. The springtime maxima and summer decrease in concentrations were simulated in a modeling …