2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
6/07/2017 | 9:45 AM - 10:00 AM | SURFACE CARBON AND NITROGEN ACCRETION RATES IN THE MODERN SEDIMENT PROFILE OF WETLANDS THAT REPRESENT MULTIPLE STATES IN THE NORTH CAROLINA COAST | 306A
SURFACE CARBON AND NITROGEN ACCRETION RATES IN THE MODERN SEDIMENT PROFILE OF WETLANDS THAT REPRESENT MULTIPLE STATES IN THE NORTH CAROLINA COAST
Coastal freshwater wetlands provide important ecosystem services but are vulnerable to saltwater incursion, drought, and inundation as our climate changes. Our study focuses on the causes and consequences of coastal freshwater forested wetlands transitioning to brackish and saltwater marshes along salinity gradients in the Albemarle-Pamlico peninsula of North Carolina. We are using a combination of approaches including biogeochemical analyses of soil cores to examine nitrogen and carbon cycles; geospatial analysis of spectral data to map wetland change; and citizen-science based mobile device applications for collecting pictures and locations of cypress trees. Our results to date indicate forested wetlands, transitional wetlands, marshes, and open water sites with saltwater stress average accretion rates of 0.21±0.04cm/yr, 0.17±0.04cm/yr, 0.12±0 cm/yr, and 0.23±0.05cm/yr respectively, which is lower than global average rate of sea level rise. There is no difference in percent carbon across wetlands types, but soil percent nitrogen is higher in marshes. Results to date suggest all wetlands in this region are vulnerable to sea level rise, and state transitions will alter the provision of ecosystem services.
- C09 Wetland Ecology
- C20 Climate Change
- C10 Biogeochemistry
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Presenters/Authors
Gillian Gundersen
(), North Carolina State University, gcgunder@ncsu.edu;
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Marcelo Ardon
(), North Carolina State University, mlardons@ncsu.edu;
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Reide Corbett
(), East Carolina University, CORBETTD@ecu.edu ;
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