Olympic Coast Seafloor Ecological Marine Unit Mapping€¦ · Continental Slope (mass wasting zone)...
Transcript of Olympic Coast Seafloor Ecological Marine Unit Mapping€¦ · Continental Slope (mass wasting zone)...
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Olympic Coast Seafloor Ecological Marine Unit Mapping
Esri Ocean Forum
November, 2017
Kathy GoodinRegan SmythMary Harkness
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The Need
• Coastal Treaty Tribes in WA co-manage marine resources off the Olympic Peninsula.
• They need consistent spatial data products to support:– Determining Essential Fish Habitat– Improving Ecosystem Based Management– Support Coastal and Marine Spatial Planning
• Information available for defining marine habitat and ecosystem value was inadequate for their management needs.
• Needed a way to standardize and aggregate existing data
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Objectives
• Bring existing spatial habitat information into a common framework
• Provide consistent nomenclature for the units
• Create seafloor maps and spatial data products
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Source DataSurficial Geological Habitat (SGH) shapefile
Chris Goldfinger Oregon State University Active Tectonics and Seafloor Mapping Lab
Data from 19 sources using multiple methods multi-beam sonar side scan sonar sediment grab samples core samples seismic reflection profiles still and video images
4 Different Classifications Sediment particle size: Folk
(1954) and Wentworth (1922). Geomorphological characters:
Greene et al. (1999) Physiographic Habitat Type:
based on NOAA Essential Fish Habitat types (2005) OSU’s Habitat Type:
Combination of substrate and bottom structure characteristics
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Biog
eogr
aphi
cSe
ttin
g
Aquatic Setting
Ecological Marine Units
Geomorphic & structural character of coast or seafloor
BioticComponent
(BC)
Water Column
Component(WC)
SubstrateComponent
(SC)
Geoform Component
(GC)
Structure and features of water column
Assemblages of benthicand suspended/floating organisms
Character & composition of surface and near-surface substrates
Components
Mod
ifier
s
Coastal and Marine Ecological Classification Standard (CMECS)
Sand Substrate
Beach Geoform
Sand Beach EMUwww.cmecscatalog.org
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Methods:Crosswalking
Solutions
• Identified Synonymy: “Gully” = “Channel”
• Create Equivalencies: “Gravel” = “Granule + Pebble”
• Create Co-Occurring Elements:“Cobbley Boulder”= “Boulder/Cobble”
• Create Provisional Units: “Continental Slope (mass wasting zone)”
Situations
• Source unit concept matches but names differ
• Source unit concept is broader than CMECS units
• Source unit concept is finer than CMECS units
• There is no equivalent source unit in CMECS
Document the messiness by assigning confidence measures
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Methods: Spatial Data
• Applied CMECS unit attributes to SGH Shapefile
• Derived raster from SGH shapefile using feature to raster conversion tools in ArcGIS 10.3.1 at 30 m resolution
• End Products: CMECS Compliant Geoform, Substrate and EMU maps
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Lessons Learned
• CMECS provided a useful tool for standardizing existing spatial habitat data– It would be easier if data were attributed to
CMECS from the start• Having pre-aggregated data was a huge benefit
– It would be better if data producers could contribute directly to an aggregated data set
– Esri’s new ArcGIS Hub has promise for making aggregating and sharing data easier.
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Resources
Northwest Indian Fisheries Commission• Story Map: http://nwifc.org/• Interactive Map Tool: http://geo.nwifc.org/ocean/
CMECS Unit Catalog: www.cmecscatalog.orgWebsite: https://ocs-iocm-web-ocs-iocm-dev.azurewebsites.net/index.html