High Resolution Phragmites Australis Classification in Delaware Estuaries

Version 1.1
Mondal, Pinki, 2026, "High Resolution Phragmites Australis Classification in Delaware Estuaries", https://dataverse.udel.edu/citation?persistentId=perma:UDel/UR1EEB, UD Dataverse, V1
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This is a catalog record. The data is held outside UD Dataverse. Original dataset: https://doi.org/10.5281/zenodo.7644496. Please cite the original dataset rather than this record.

"This dataset provides a high resolution (1-m) land cover map for Estuarine wetlands in the State of Delaware in the United States of America during the summer of 2017. This dataset was created to identify populations of the invasive marsh species Phragmites australis. This classification is s derived from National Agriculture Imagery Program (NAIP) 1-m aerial imagery captured in the State of Delaware during June of 2017. A zipped file containing a GEOTIFF titled ""Phrag_DE_5PC"" with the classified image for 2017 is available for download. "

Time period: June 2017
Location: Delaware
Formats: .tif
Access (per the DSI catalog): Public (Dataset is or could be made publicly available to all without restrictions)

Project: Mapping of Phragmites in estuarine wetlands using high-resolution aerial imagery. Phragmites australis is a widespread invasive plant species in the USA that greatly impacts estuarine wetlands by creating dense patches and outcompeting other plants. The invasion of Phragmites into wetland ecosystems is known to decrease biodiversity, destroy the habitat of threatened and endangered bird species, and alter biogeochemistry. While the impact of Phragmites is known, the spatial extent of this species is challenging to document due to its fragmented occurrence. Using high-resolution imagery from the National Agriculture Imagery Program (NAIP) from 2017, we evaluated a geospatial method of mapping the spatial extent of Phragmites across the state of DE. Normalized difference vegetation index (NDVI) and principal component analysis (PCA) bands are generated from the NAIP data and used as inputs in a random forest classifier to achieve a high overall accuracy for the Phragmites classification of around 95%. The classified gridded dataset has a spatial resolution of 1 m and documents the spatial distribution of Phragmites throughout the state’s estuarine wetlands (around 11%). Such detailed classification could aid in monitoring the spread of this invasive species over space and time and would inform the decision-making process for landscape managers. Funding: NSF EPSCoR grant no. 1757353 and the State of Delaware, NASA EPSCoR grant (DE-80NSSC20M0220), NASA Delaware Space Grant College and Fellowship Program (80NSSC20M0045).

Source: UD Dataset Catalog, UD Data Science Institute: https://research.dsi.udel.edu/dataset/metadata.html#High-Resolution-Phragmites-Australis-Classification-in-Delaware-Estuaries

Subject Earth and Environmental Sciences
Keyword Geospatial, phragmites, classification, landcover, wetlands, marsh, estuary, delaware, naip, national agriculture imagery program, usda, remote sensing, gis, Mapping of Phragmites in estuarine wetlands using high-resolution aerial imagery
Related Publication https://doi.org/10.1007/s10661-023-11071-6doi: 10.1007/s10661-023-11071-6
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