EELGRASS MAPPING IN ATLANTIC CANADA USING WORLDVIEW-2 IMAGERY

Eelgrass (Zostera marina L.) is a marine angiosperm plant that grows throughout coastal areas in Atlantic Canada. Eelgrass meadows provide numerous ecosystem services, and while they have been acknowledged as important habitats, their location, extent, and health in Atlantic Canada are poorly unders...

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Bibliographic Details
Main Authors: Forsey, D., Leblon, B., LaRocque, A., Skinner, M., Douglas, A.
Format: Conference Proceeding
Language:English
Subjects:
Aquatic plants
Brackishwater environment
Classifiers
Coastal zone
Ecosystem services
Estuaries
Imagery
Lagoons
Mapping
Satellite imagery
Sea grasses
Spaceborne remote sensing
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Summary:Eelgrass (Zostera marina L.) is a marine angiosperm plant that grows throughout coastal areas in Atlantic Canada. Eelgrass meadows provide numerous ecosystem services, and while they have been acknowledged as important habitats, their location, extent, and health in Atlantic Canada are poorly understood. This study examined the effectiveness of WorldView-2 optical satellite imagery to map eelgrass presence in Tabusintac Bay, New Brunswick (Canada), an estuarine lagoon with extensive eelgrass coverage. The imagery was classified using two supervised classifiers: the parametric Maximum Likelihood Classifier (MLC) and the non-parametric Random Forests (RF) classifier. While Random Forests was expected to produce higher classification accuracies, it was shown not to be much better than MLC. The overall validation accuracy was 97.6% with RF and 99.8% with MLC.
ISSN:2194-9034
1682-1750
2194-9034
DOI:10.5194/isprs-archives-XLIII-B3-2020-685-2020