nongame conservation section - atlantaregional.org conservation section our mission: ... • arcgis...
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Nongame Conservation Section Greg Krakow and NCS staff
March 1, 2017
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Nongame Conservation Section
Our Mission: Conserving
Nongame Wildlife
Nongame means animals not
legally hunted, fished or trapped,
as well as rare plants and natural
habitats
Core Areas
• Rare Species Surveys and
Monitoring
• Environmental review
• Habitat Restoration
• Land Acquisition/Easements
• Conservation Planning
• Education and Outreach
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Enter Data Process Data Present Data
Spatial SQL
Work Flow
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Spatial databases work with Spatial Features to:
• Measure length, area, distance
• Modify creating buffers, merges, intersections, etc.
• Observe spatial relationships
• Create new geometries
• Return specific information about a feature and associated attributes.
• Aggregate spatial and non-spatial data
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PostGIS, Carto and Spatialite
• PostGIS is a full feature multiuser, networkable spatial GIS database
• Carto as feature rich, open source, web mapping tool that fully supports PostGIS
• Spatialite is a single user, single computer spatial database that implements spatial SQL in a similar way as PostGIS
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Enter Data
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Network of independent agencies collecting and
analyzing data for biodiversity conservation
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Biotics 5 is a web based GIS platform developed by NatureServe for managing biodiversity conservation data.
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Process Data
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How I use Spatialite
• Convert table structure: Makes it easy to assemble disparate feature data sets with various types of feature types and CRS into one data set.
• Clean up and organize data
• Transform data
• Aggregate data using spatial aggregation features such as spatial union (st_union).
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Cleanup, convert and format
incoming spatial data
Get nearest stream to each
collection point
Aggregate data by most recent range
of years
~5.5 million streams ~500 sampling sites
With SpatiaLite kNN (K-Nearest Neighbor) indexing it took only 30 seconds.
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Format some data
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Aggregate some data
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Traditional county range map
Quercus oglethorpensis Oglethorpe Oak
Traditional county range map
Quercus oglethorpensis Oglethorpe Oak
. . . with digital interactive maps we can make this data available online.
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What can you do? Understand data acquisition needs
• Find locations to target for field surveys • Understanding missing database information
– In people’s heads – In institutions – From survey records
• Possible new locations for elements • Where elements have declined or are potentially
extirpated (when map units are adequately surveyed)
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How was all this done?
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Things tried but not used
Manual: • ArcGIS Spatial Join in
Analysis tools Automation: • Arc GIS Model Builder • Python & ArcPy • Python & QGIS • Python & OGR
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Preparing the data
Biotics5 EOs records
Biotics5 Oracle View Select and format attribute
categories
Python/Spatialite SQL join & aggregate EO
info with range map units
CSV text files EO age attributes and range map unit names
Shapefile EO polygons and formatted
attribute values
Carto PostGIS Spatial Database
on the web
Shapefiles County, Watershed, Ecoregion, hexagon,
quarter quad
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Still use Python as “glue” language but prefer Spatial SQL for processing vector data
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The End
Spatial SQL
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Thank you!