Okanagan Conservation Ranking Polygons
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Conservation Rankings The conservation ranking process was used to evaluate and highlight the relative value of ecosystems in the OkanaganRegionas part of two independent projects (North & Central Okanagan regional districts, and South Okanagan-Similkameen Regional District). Data sources included Terrestrial Ecosystem Mapping (TEM), Sensitive Ecosystems Inventory (SEI), and Vegetation Resource Inventory (VRI), and other biophysical criteria (e.g., elevation and aspect). Numerical scores were assignedto ecosystems,then classified into one of four relative conservation ranks: low, moderate, high, or very high in importance to conservation.
Applying Conservation Rankings to Polygons
All SEIunits were linked (using BEC site series or TEM ecosystem name) to corresponding ecosystems in theConservation Framework (CF);B.C.’s approach for maintaining the biodiversity and conserving species and ecosystems. Ecosystems were scored under the CF goals of ‘Proactive conservation’ and ‘Maintaining B.C.’s native biodiversity’. Final ranking was based on confirmation or reconciliation of the TEM rank, CF rank and expert consensus.
Where TEM and SEI data were not available, the conservation ranking was based on the attributes present in the VRI (leading tree species and age, biogeoclimatic variant and land cover code, cross-walked with similar TEM units).Riparian areas, wetlands and all grasslands received a conservation rank of very highto factor in the relative rarity and importance of these ecosystems in the province.
Integration of Study Areas
The conservation rankings for the two study areas (North & Central Okanagan and South Okanagan-Similkameen) were combined to create an integrated perspective of the entire Okanagan Region. Natural variances in the distribution and amount of certain ecosystems produce some differences in the appearance between the two study areas. For example, grasslands (which are ranked as very high) are more abundant in the South Okanagan-Similkameenthan the North and Central study area.
The original analyses for the two study areas were conducted independently, using SEI datasets that incorporated different information. The North and Central Okanagan SEI data included information regarding wildlife habitat and condition values that were not available for the South Okanagan–Similkameen. This additional information moderated the conservation rankings in the North and Central study area. As a result, there are differences in rankings, and consequently, variations in appearance between the two areas.
The conservation ranking map provides a comprehensive look at the relative value of ecosystems in the OkanaganRegion. Together with other maps in the series (relative biodiversity, habitat connectivity, and land management class), individuals and organizationscan begin to make more informed decisions on conservation and land use planning, at a region-wide scale.
|Name||Jamie Leathem (businessExpert)|
|Organization||Ministry of Forests, Lands, Natural Resource Operations and Rural Development|
|Sub-Organization||Regional Operations - Thompson Okanagan|
Access & Security
|Who can view this dataset?||Public|
|Who can download this dataset?||Public|
|Record Last Modified||2020-10-01|
Object Name: REG_LAND_AND_NATURAL_RESOURCE.CONSERV_RANKING_OK_SP
Short Name: CNSV_RK_OK
Comments: This spatial layer contains the Okanagan Conservation Ranking Polygons, which is part of the Okanagan Region Biodiversity Conservation Strategy (Keeping Nature in Our Future). Okanagan Conservation Ranking Polygons classifies ecosystems into four relative conservation ranks: low, moderate, high and very high. This is a multipart polygon feature.
|Column Name||Short Name||Data Type||Data Precision||Comments|
|CONSERV_RANKING_OK_ID||CNSRV_R_ID||NUMBER||10||CONSERV RANKING OK ID: Is a system generated unique identification number. e.g., 1|
|CONSERVATION_RANKING||CNSRVTN_RG||VARCHAR2||10||CONSERVATION_RANKING: Is the relative conservation ranking classified into categories: Low, Moderate, High and Very High|
|SOURCE_STUDY_AREA||SRC_STDY_A||VARCHAR2||50||SOURCE_STUDY_AREA: Is the study area that the feature came from: either the North and Central Okanagan Study Area or the South Okanagan-Similkameen Study Area.|
|FEATURE_AREA_SQM||AREA_SQM||NUMBER||19||FEATURE AREA SQM is the system calculated area of a two-dimensional polygon in square meters.|
|FEATURE_LENGTH_M||FEAT_LEN||NUMBER||19||FEATURE LENGTH M is the system calculated length or perimeter of a geometry in meters.|
|SHAPE||SHAPE||SDO_GEOMETRY||1||SHAPE is the column used to reference the spatial coordinates defining the feature.|
|OBJECTID||OBJECTID||NUMBER||38||OBJECTID is a column required by spatial layers that interact with ESRI ArcSDE. It is populated with unique values automatically by SDE.|
|SE_ANNO_CAD_DATA||BLOB||4000||SE ANNO CAD DATA is a binary column used by spatial tools to store annotation, curve features and CAD data when using the SDO GEOMETRY storage data type.|