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Anthropogenic disturbance footprint within boreal caribou ranges across Canada - As interpreted from 2008-2010 Landsat satellite imagery Updated to 2012 range boundaries As part of a scientific assessment of critical habitat for boreal woodland caribou Environment Canada 2011, see full reference in accompanying documentation , Environment Canada's Landscape Science and Technology Division was tasked with providing detailed anthropogenic disturbance mapping across known caribou ranges. This data allowed researchers to better understand the attributes that have a known effect on caribou population persistence. The mapping process was established to create a nationally consistent, reliable and repeatable geospatial dataset that followed a common methodology. The methods developed were focused on mapping disturbances at a specific point of time, and were not designed to identify the age of disturbances, which can be of particular interest for disturbances that can be considered non-permanent, for example cutblocks. The resultant datasets were used for caribou resource selection function,habitat modeling, and assess overall disturbance levels on each caribou ranges. Anthropogenic disturbances within 57 caribou ranges across Canada were mapped. The ranges were defined by individual Provinces and Territories across Canada. Disturbances were mapped across these ranges using 2008-2010 Landsat-5 satellite imagery to provide the most up to date data possible. Originally some areas were mapped to match the date of collected caribou demographic data, however more recent imagery was used and additional disturbance features that were seen since the original mapping date were added. Within the context of this project, anthropogenic disturbance was defined as any human-caused disturbance to the natural landscape that could be visually identified from Landsat imagery at a viewing scale of 1:50,000. A minimum mapping unit MMU of 2 ha or approximately 22 contiguous Landsat pixels was selected. Each disturbance feature type was represented in the database by a line or polygon depending on their geometric description. Polygonal disturbances included: cutblocks, mines, reservoirs, built-up areas, well sites, agriculture, oil and gas facilities, as well as unknown features. Linear disturbances included: roads, railways, powerlines, seismic exploration lines, pipelines, dams, air strips, as well as unknown features. For each anthropogenic feature type, a clear description was established see Appendix 7.2 of the science assessment to maintain consistency in identifying the various disturbances in the imagery by the different interpreters. Various ancillary vector datasets were used as aids in detecting, classifying and digitizing disturbances on the Landsat imagery a table listing these datasets and their sources has been included in a separate file . Ancillary data was used to guide interpretation and feature labelling since the ancillary data was often variable across the country in terms of completeness as well as scale. As a result, features were only digitized if they were visible in the Landsat imagery at a viewing scale of 1:50,000. A 2nd interpreter quality control phase was carried out to ensure high quality, completete and consistent data collection. A quality assessment analysis, since an actual accuracy assessment was not possible, using high resolution SPOT imagery was carried out on a sample basis. Results are included in accompanying documentation. The vector data was buffered by 500m radius representing the zone of influence impacting boreal caribou herds in order to calculate range disturbance levels as well as for use in the integrated risk assessment analysis. Fire polygons were merged into the anthropogenic footprint in order to create an overall disturbance footprint. 2016-11-17 Environment and Climate Change Canada open-ouvert@tbs-sct.gc.ca Nature and Environmentanthropogeneic disturbanceborealforestcaribouhabitatmappinglandcoverlanduse Anthropogenic disturbance footprint within boreal caribou ranges across Canada (Updated 2012) (SHP Format - 146 MB)other http://ec.gc.ca/data_donnees/STB-DGST/001/BorealCaribouDisturbanceShapefiles_Updated2012.zip L'empreinte des perturbations anthropiques sur les aires de répartition du caribou boréal au Canada (Créés avec les aires de répartition mise à jour 2012) (Format SHP - 146 Mo)other http://ec.gc.ca/data_donnees/STB-DGST/001/BorealCaribouDisturbanceShapefiles_Updated2012.zip Anthropogeneic Disturbance Mapping Methods Appendix - English (PDF Format)other http://ec.gc.ca/data_donnees/STB-DGST/001/Anthropogeneic_Disturbance_Mapping_Methods_Appendix_-_ENGLISH.pdf Anthropogeneic Disturbance Mapping Methods Appendix - French (Format PDF)other http://ec.gc.ca/data_donnees/STB-DGST/001/Anthropogeneic_Disturbance_Mapping_Methods_Appendix_-_FRENCH.pdf Boreal Caribou 2011 Scientific Assessment Mapping Methods Appendix - English (PDF Format)other http://ec.gc.ca/data_donnees/STB-DGST/001/Boreal_Caribou_2011_Scientific_Assessment_Mapping_Methods_Appendix_-_ENGLISH.pdf Boreal Caribou 2011 Scientific Assessment Mapping Methods Appendix - French (Format PDF)other http://ec.gc.ca/data_donnees/STB-DGST/001/Boreal_Caribou_2011_Scientific_Assessment_Mapping_Methods_Appendix_-_FRENCH.pdf DISTURBANCE DATA 500mBUFFER Updated2012 METADATA ISO19115 - ENGLISH (XML Format)other http://ec.gc.ca/data_donnees/STB-DGST/001/DISTURBANCE_DATA_500mBUFFER_Updated2012_METADATA_ISO19115_-_ENGLISH.xml DISTURBANCE DATA 500mBUFFER Updated2012 METADATA ISO19115 - FRENCH (Format XML)other http://ec.gc.ca/data_donnees/STB-DGST/001/DISTURBANCE_DATA_500mBUFFER_Updated2012_METADATA_ISO19115_-_FRENCH.xml Field Names and Descriptions - ENGLISH - UPDATED 2012 (TXT Format)other http://ec.gc.ca/data_donnees/STB-DGST/001/Field_Names_and_Descriptions_-_ENGLISH_-_UPDATED_2012.txt Field Names and Descriptions - FRENCH - UPDATED 2012 (Format TXT)other http://ec.gc.ca/data_donnees/STB-DGST/001/Field_Names_and_Descriptions_-_FRENCH_-_UPDATED_2012.txt SUMMARY - English (DOC Format)other http://ec.gc.ca/data_donnees/STB-DGST/001/Boreal_Caribou_Anthropogenic_Disturbance_Footprint_Mapping_-_SUMMARY_-_ENGLISH.doc SUMMARY - French (Format DOC)other http://ec.gc.ca/data_donnees/STB-DGST/001/Boreal_Caribou_Anthropogenic_Disturbance_Footprint_Mapping_-_SUMMARY_-_FRENCH.doc READ ME FIRST (DOC Format)other http://ec.gc.ca/data_donnees/STB-DGST/001/READ_ME_FIRST_UPDATED2012-ENGLISH.doc READ ME FIRST (Format DOC)other http://ec.gc.ca/data_donnees/STB-DGST/001/READ_ME_FIRST_UPDATED2012-ENGLISH.doc

Anthropogenic disturbance footprint within boreal caribou ranges across Canada - As interpreted from 2008-2010 Landsat satellite imagery Updated to 2012 range boundaries

As part of a scientific assessment of critical habitat for boreal woodland caribou Environment Canada 2011, see full reference in accompanying documentation , Environment Canada's Landscape Science and Technology Division was tasked with providing detailed anthropogenic disturbance mapping across known caribou ranges. This data allowed researchers to better understand the attributes that have a known effect on caribou population persistence. The mapping process was established to create a nationally consistent, reliable and repeatable geospatial dataset that followed a common methodology. The methods developed were focused on mapping disturbances at a specific point of time, and were not designed to identify the age of disturbances, which can be of particular interest for disturbances that can be considered non-permanent, for example cutblocks. The resultant datasets were used for caribou resource selection function,habitat modeling, and assess overall disturbance levels on each caribou ranges. Anthropogenic disturbances within 57 caribou ranges across Canada were mapped. The ranges were defined by individual Provinces and Territories across Canada. Disturbances were mapped across these ranges using 2008-2010 Landsat-5 satellite imagery to provide the most up to date data possible. Originally some areas were mapped to match the date of collected caribou demographic data, however more recent imagery was used and additional disturbance features that were seen since the original mapping date were added. Within the context of this project, anthropogenic disturbance was defined as any human-caused disturbance to the natural landscape that could be visually identified from Landsat imagery at a viewing scale of 1:50,000. A minimum mapping unit MMU of 2 ha or approximately 22 contiguous Landsat pixels was selected. Each disturbance feature type was represented in the database by a line or polygon depending on their geometric description. Polygonal disturbances included: cutblocks, mines, reservoirs, built-up areas, well sites, agriculture, oil and gas facilities, as well as unknown features. Linear disturbances included: roads, railways, powerlines, seismic exploration lines, pipelines, dams, air strips, as well as unknown features. For each anthropogenic feature type, a clear description was established see Appendix 7.2 of the science assessment to maintain consistency in identifying the various disturbances in the imagery by the different interpreters. Various ancillary vector datasets were used as aids in detecting, classifying and digitizing disturbances on the Landsat imagery a table listing these datasets and their sources has been included in a separate file . Ancillary data was used to guide interpretation and feature labelling since the ancillary data was often variable across the country in terms of completeness as well as scale. As a result, features were only digitized if they were visible in the Landsat imagery at a viewing scale of 1:50,000. A 2nd interpreter quality control phase was carried out to ensure high quality, completete and consistent data collection. A quality assessment analysis, since an actual accuracy assessment was not possible, using high resolution SPOT imagery was carried out on a sample basis. Results are included in accompanying documentation. The vector data was buffered by 500m radius representing the zone of influence impacting boreal caribou herds in order to calculate range disturbance levels as well as for use in the integrated risk assessment analysis. Fire polygons were merged into the anthropogenic footprint in order to create an overall disturbance footprint.

Resources

Resource Name Resource Type Format Language Links
Anthropogenic disturbance footprint within boreal caribou ranges across Canada (Updated 2012) (SHP Format - 146 MB) Dataset Other English Access
L'empreinte des perturbations anthropiques sur les aires de répartition du caribou boréal au Canada (Créés avec les aires de répartition mise à jour 2012) (Format SHP - 146 Mo) Dataset Other French Access
Anthropogeneic Disturbance Mapping Methods Appendix - English (PDF Format) Dataset Other English Access
Anthropogeneic Disturbance Mapping Methods Appendix - French (Format PDF) Dataset Other French Access
Boreal Caribou 2011 Scientific Assessment Mapping Methods Appendix - English (PDF Format) Dataset Other English Access
Boreal Caribou 2011 Scientific Assessment Mapping Methods Appendix - French (Format PDF) Dataset Other French Access
DISTURBANCE DATA 500mBUFFER Updated2012 METADATA ISO19115 - ENGLISH (XML Format) Dataset Other English Access
DISTURBANCE DATA 500mBUFFER Updated2012 METADATA ISO19115 - FRENCH (Format XML) Dataset Other French Access
Field Names and Descriptions - ENGLISH - UPDATED 2012 (TXT Format) Dataset Other English Access
Field Names and Descriptions - FRENCH - UPDATED 2012 (Format TXT) Dataset Other French Access
SUMMARY - English (DOC Format) Dataset Other English Access
SUMMARY - French (Format DOC) Dataset Other French Access
READ ME FIRST (DOC Format) Dataset Other English Access
READ ME FIRST (Format DOC) Dataset Other French Access

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