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Layer: BCR12_GrasslandHVPrairie_RCO12 (ID: 4)

Parent Layer: BCR12_BiodiversityAtlasBiodiversite_RCO12

Name: BCR12_GrasslandHVPrairie_RCO12

Display Field: Site

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This layer aggregates potential high conservation value grassland per 5 ha hexagon in the Boreal Hardwood Transition Ecozone, also known as BCR 12. It is one of three high value habitat datasets derived from the CWS-ON Landscape Conservation Atlas and Plan (COLCAP). COLCAP is a comprehensive landscape assessment in BCR 12 and 13 that describes and assesses the CWS landscape biodiversity portfolio.In the COLCAP, natural grassland includes alvar, tallgrass/prairie/savannah/woodland, open sand dune, treed sand dune, rock barren and shrub rock barren communities; agricultural grassland includes pasture, hay and old fields, pasture and abandoned fields, and old cuts and burn areas. Data was extracted from the Southern Ontario Land Resource Information System v 2.0 (OMNRF, 2015), Natural Heritage Information Centre (OMNRF, 2013), Annual Crop Inventory (AAFC, 2013) and the Provincial Land Cover 28 (OMNRF, 1998).Using the How Much Habitat is Enough? guidelines, each study unit (5 ha hexagon) containing grassland was assessed and scored by the following criteria: protection and conservation, proximity, patch size, and habitat heterogeneity. These criteria were added together to calculate an overall grassland score within each study unit; this overall grassland score was divided into quartiles and the top 25% of scores were categorized as having potential high conservation value (PHCV).Species at risk (SAR) were assessed and scored by the following criteria: diversity, SAR richness, SAR irreplaceability, global rarity, candidate SAR, and probability of critical habitat. These criteria were added together to calculate an overall SAR score within each study unit; this overall SAR score was divided into quartiles and the top 25% of SAR scores within grassland were categorized as having PHCV.Migratory bird criteria relevant to grassland (landbird stopover + grassland bird density) were added together to calculate an overall migratory bird score within each study unit; this overall migratory bird score was divided into quartiles and the top 25% of migratory bird scores were categorized as having PHCV.Using these three criteria (overall grassland score, SAR score and migratory bird score), each study unit was assigned a final PHCV score (0-3). A final PHCV score of 0 indicated that while the study unit may contain grassland, it was not within the top 25% of overall grassland scores. Study units with a final PHCV greater than 0 were aggregated together at 750 m to derive High Value Habitat: Grassland.Secondary Site - Grassland = less than 20 ha in size; Biodiversity Site - Grassland = greater than 20 ha in size.

Definition Expression: N/A

Copyright Text: Environment and Climate Change Canada - Canadian Wildlife Service, Ontario, in partnership with the Nature Conservancy of Canada, 2016.

Default Visibility: true

MaxRecordCount: 1000

Supported Query Formats: JSON, AMF, geoJSON

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:
Drawing Info: Advanced Query Capabilities:
HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:
Supported Operations:   Query   Generate Renderer   Return Updates

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