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Classifications include: <\/SPAN><\/P>

- Tidal Scoured Mixed Sediments (Glacial till - boulders or cobble with high roundness and low angularity)<\/SPAN><\/P>

- Mixed Sediments (Glacial Till - < 50% boulders or bedrock with mixed sediments of cobble, gravel and sand) <\/SPAN><\/P>

- Gravelly Sand (Sand with 5\u201330% gravel)<\/SPAN><\/P>

- Sand (> 90% Sand)<\/SPAN><\/P>

- Silty Gravel with Anemones (> 50% gravel with silt and Anemones)<\/SPAN><\/P>

- Silt (> 90% Silt) and Bedrock and Boulders (> 50% bedrock or boulders).<\/SPAN><\/P>

Unsupervised classification process is as follows:<\/SPAN><\/P>

1. Image objects were produced using eCognition software (segmentation layer found in the UnsupervisedClassification_shapefiles/Segmentation_eCognition) using bathymetry and backscatter only.<\/SPAN><\/P>

2. Fuzzy c-means algorithm was applied (using PPCLUST package in R) to the segmentation layer and environmental variables to get acoutic classes (#1-14 - number of clusters were optimized at 14). <\/SPAN><\/P>

3. Bottom types from in-situ video were classified using a benthoscape classification method. 10 images at 10 meter intervals from each station were extracted and analysed.<\/SPAN><\/P>

4. Benthoscape classes from groundtruthed video data were then matched to the acoustic classes in an error matrix. <\/SPAN><\/P><\/DIV><\/DIV><\/DIV>", "geometryType": "esriGeometryPolygon", "sourceSpatialReference": { "wkid": 102100, "latestWkid": 3857, "xyTolerance": 0.001, "zTolerance": 0.001, "mTolerance": 0.001, "falseX": -20037700, "falseY": -30241100, "xyUnits": 10000, "falseZ": -100000, "zUnits": 10000, "falseM": -100000, "mUnits": 10000 }, "copyrightText": "Wilson, B.R., Brown, C.J., Sameoto, J.A., Lacharite, M., Redden, A. (2021).\nMapping seafloor habitats in the Bay of Fundy to assess macrofaunal assemblages associated with Modiolus modiolus beds. 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