Name: Biophysical_Units_ProbAssign_L4AB by L4B

Display Field: L4B_LowProb

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Under the Pacific Marine Ecological Classification System (PMECS; DFO 2016; Rubidge et al. 2016), biophysical units are areas of distinct physiographic and oceanographic conditions and processes that shape species composition at spatial extents of 1000s of km. Rubidge et al. (2016) used a two-step process to identify biophysical units in British Columbia. First, a cluster analysis based on the similarity of species composition was used to group sites with similar species into distinct biological assemblages. Second, a random forest analysis was used to identify environmental correlates of the biological assemblages identified by the cluster analysis and to predict and assign the biological assemblage present in areas with too few biological data. This layer shows the probability that a grid cell was assigned to a given biophysical unit in the final random forest predictive modelling step. Full methods are available in Rubidge et al. 2016.ReferencesDFO. 2016. Evaluation of Hierarchical Marine Ecological Classification Systems for Pacific and Maritimes Regions. DFO Can. Sci. Advis. Sec. Sci. Advis. Rep. 2016/003.Rubidge, E., Gale, K.S.P., Curtis, J.M.R., McClelland, E., Feyrer, L., Bodtker, K., and Robb, C. 2016. Methodology of the Pacific Marine Ecological Classification System and its application to the Northern and Southern Shelf Bioregions. DFO Can. Sci. Advis. Sec. Res. Doc. 2016/035: xi + 124 p.

Service Item Id: 5ad7ef9116ce4fd98dfba34cca1496e7

Copyright Text: Rubidge, E., Gale, K.S.P., Curtis, J.M.R., McClelland, E., Feyrer, L., Bodtker, K., and Robb, C. 2016. Methodology of the Pacific Marine Ecological Classification System and its application to the Northern and Southern Shelf Bioregions. DFO Can. Sci. Advis. Sec. Res. Doc. 2016/035: xi + 124 p. DFO Science, Pacific Region

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Extent:

XMin: 456060.00000000186
YMin: 328000
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Spatial Reference: 102190  (3005)

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Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• Shape ( type: esriFieldTypeGeometry, alias: Shape )
• L4A_Prob ( type: esriFieldTypeDouble, alias: L4A_Prob )
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• L4B_Prob ( type: esriFieldTypeDouble, alias: L4B_Prob )
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• L4B_LowProb ( type: esriFieldTypeString, alias: L4B_LowProb, length: 15 )
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