Hyperspectral Reflectance of Freshwater Tidal Emergent Macrophytes as a Remote Sensing Tool for Assessing Wetland Nitrogen Status

Principal Investigator:

David R. Tilley

Start/End Year:

2004 - 2006


University of Maryland, College Park

Co-Principal Investigator:

Andrew Baldwin, University of Maryland, College Park


(1) Adapt leaf-scale models for relating plant reflectance indices to wetland ammonia concentrations, identified in our previous and on-going research, to field-scale canopy reflectance measurements of freshwater tidal marsh plant communities; (2) Design, build and test a boat-borne platform for rapidly collecting canopy hyperspectral reflectance of marshes, which can be used in the canopy-scale reflectance/ammonia models to quantify marsh nitrogen status, & (3) Demonstrate our technology to state agencies to consider it as a wetland monitoring tool.

Related Publications:

Tilley, DR; Ahmed, M; Son, JH; Badrinarayanan, H. 2007. Hyperspectral reflectance response of freshwater macrophytes to salinity in a brackish subtropical marsh. Journal of Environmental Quality36(3):780 -789. doi:10.2134/jeq2005.0327. UM-SG-RS-2007-10.

Tilley, DR; Ahmed, M; Son, JH; Badrinarayanan, H. 2003. Hyperspectral reflectance of emergent macrophytes as an indicator of water column ammonia in an oligohaline, subtropical marsh. Ecological Engineering21(23):153 -163. doi:10.1016/j.ecoleng.2003.10.004. UM-SG-RS-2003-16.

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