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Oregon Crucial Habitat
2013-12-11
1
vector digital data
Oregon crucial habitat data will be updated on a regular basis. Users of the data are encouraged to check online (http://www.dfw.state.or.us/ and/or http://westgovchat.org) to ensure they have the most recent version.
Arthur Rodriguez
Oregon Department of Fish and Wildlife
GIS Analyst, Oregon Conservation Strategy
4304 Fairview Industrial Dr. SE
Salem
OR
97302
arthur.h.rodriguez@state.or.us
503-947-0126
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>This dataset represents an aggregated measure of crucial habitat for species of interest to the Oregn Department of Fish and Wildlife (ODFW). Crucial habitat describes places that are expected to contain the resources necessary for continued health of fish and wildlife populations or important ecological systems expected to provide high value for a diversity of fish and wildlife. The Western Governors' Wildlife Council (WGWC) defined crucial habitat for fish and wildlife to include several data types and input layers: Habitat for Terrestrial and/or Aquatic Species of Concern (SOC), Native and Unfragmented Habitat (which may include landscape condition, large natural areas, natural vegetetaion communities, ecological systems of concern, landscape corridors, and/or freshwater integrity), Riparian and wetland habitat, Connectivity or linkage areas (wildlife corridors), and Habitat for terrestrial and/or aquatic species of economic or recreational importance. ODFW staff compiled data encompassing all of the above categories and then ranked areas as “crucial habitat” using a relative, six-level prioritization scheme, where 1 represents areas “most crucial,” or those areas that most closely meet the definition of crucial habitat based on the WGWC definitions; and 6 represents “least crucial” areas, or those areas that least closely meet the definition of crucial habitat based on the WGWC definitions. Crucial habitat values are in no way regulatory and do not imply specific avoidance or mitigation measures for a given area. Crucial habitat values should be interpreted as the relative probability, or risk, that a high-priority species or habitat would be encountered in a given area based on the best available scientific information.</SPAN></P></DIV></DIV></DIV>
This layer serves as the Oregon Department of Fish and Wildlife (ODFW) component of the Western Governors' Association Crucial Habitat Assessment Tool (WGA CHAT), which is a result of coordination among state fish and wildlife agencies throughout the Western United States. This dataset is intended to improve understanding of fish and wildlife habitat priorities throughout Oregon, and can be useful for state-specific queries. The crucial habitat dataset can be used to facilitate landscape decision-making in the early stages of land use project planning, and to aid with efforts to identify important areas for conservation using state-wide consistent analyses and data definitions.
Note that this data was updated in February, 2014 to fix an issue found in the Terrestrial Species of Economic and Recreational Importance aggregation methods. As a result, this data may not match exactly with the data currently available on the WGA CHAT site (http://westgovchat.org/).
Oregon Department of Fish and Wildlife and the Western Governors' Association
Oregon
February, 2014
ISO 19115 Topic Categories
biota
environment
wildlife, wildlife habitat, fish, fish habitat, wetlands, riparian, western states, crucial habitat, CHAT, biodiversity, landscape integrity
Oregon
biota
wildlife
wildlife habitat
fish
fish habitat
wetlands
riparian
western states
crucial habitat
CHAT
biodiversity
landscape integrity
environment
November
2013
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The Oregon Crucial Habitat dataset is not a substitute for site-specific consultation with land and resource management agencies, nor does it satisfy the need for on-the-ground biological surveys or assessments. Users are encouraged to consult with Oregon Department of Fish and Wildlife (ODFW) staff regarding the proper use and interpretation of these data and to receive guidance on how to obtain site-specific information as available. </SPAN></P><P><SPAN>The crucial habitat dataset is a landscape-scale, coarse-resolution dataset not intended to establish specific boundaries for site-specific planning, regulation, or acquisition. It is not intended to determine the exact ecological health or condition of any specific location on the ground.The crucial habitat dataset incorporates both confirmed (documented) species location and modeled species distribution data as described in more detail within the ODFW Crucial Habitat metadata spreadsheet. The absence of specific species information in a particular hexagon may be due to lack of surveys or data, and cannot be interpreted as conclusive documentation of the absence of that species occurring on the ground.</SPAN></P><P><SPAN>Please see the ODFW Crucial Habitat metadata spreadsheet for additional details.The dataset is based on the best available scientific information, and is expected to be updated regularly. The crucial habitat rank of a hexagon may change over time as new information is incorporated. Users should check www.dfw.state.or.us/maps/compass and/or www.westgovchat.org to ensure they have the most recent version of the data.</SPAN></P></DIV></DIV></DIV>
Esri ArcGIS 13.7.0.1901
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state of Oregon
2013-11-01T00:00:00
Arthur Rodriguez
Oregon Department of Fish and Wildlife
GIS Analyst, Oregon Conservation Strategy
4304 Fairview Industrial Dr. SE
Salem
OR
97302
arthur.h.rodriguez@state.or.us
503-947-0126
Arthur Rodriguez
1
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2014-02-28T00:00:00
Arthur Rodriguez
Oregon Department of Fish and Wildlife
GIS Analyst, Oregon Conservation Strategy
4304 Fairview Industrial Dr. SE
Salem
OR
97302
arthur.h.rodriguez@state.or.us
503-947-0126
Arthur Rodriguez
All data provided in either 1, 3, or 10 square mile hexagons. Hexagons were developed randomly to cover the Western United States, from a regional scale.
All data provided by individual states, and determined that it should be made available for download, is included herein.
Individual states compiled data inputs and then ranked into prioritized crucial habitat maps under direction of each WGWC representative. The crucial habitat maps were assembled into a hexagonal grid: Either 1 square mile hexagons or 3 square mile hexagons for the conterminous western states; 10 square mile hexagons were used for Alaska. Please see the individual state metadata information provided within the CHAT website (http://westgovchat.org/data/metadata#) or in the excel spreadsheet accompaning the CHAT westwide dataset download.
2013-11-04
West-wide crucial habitat mosaic: Each state submitted their crucial habitat hexagon layer with all specific attribute fields populated for inclusion in the west-wide mosaic. Attribute columns or individual cells that were not used by a state were coded with a value of 9999 to indicate “data not available”. Individual state layers were processed in ArcGIS 10.2 and “joined” by hexagon ID to a series of West-wide hexagon layers that had an attribute column relating to each specific data input theme as well as a column for each state (for example, Ter_SOC; Intact_LS). The data value from the state specific layer was copied into the appropriate state attribute column in the westwide data theme layer. Once all states had been joined and their values copied, the attribute field for that theme layer was calculated as the minimum value from across all states. Using this method, each state’s values were used to populate the West-wide mosaic, and cells shared along a state border were populated with the minimum of the possible inputs. Using 9999 for “no data” ensured that a value from a neighboring state would supercede this and help prevent data gaps along state borders. Cells coded as 9999 within a state represent areas of “data not available”. When all West-wide data theme layers were completed, the calculated minimum value was then joined to a west-wide layer that was populated with the minimum values from each data theme layer. Two copies of this fully attributed westwide layer were then made, one to represent the viewing preferences of each state, and a second to represent the data download preferences for each state. A series of selections and recalculations were made based on the display and download preferences for each state such that if a state designated an attribute column should not be displayed (or downloaded), the attribute cells within that state were recalculated to be 9999. Preferences were assigned to the state that occupied the center of each hexagon cell.
2013-11-08
0
Please see the Oregon Crucial Habitat Metadata Spreadsheet for details on how each crucial habitat layer was compiled and analyzed. Basic definitions of the attributes contained in this dataset are provided here. All attributes are ranked on a scale of 1-6 indicating a component of crucial habitat, where 1 represents areas "most crucial," or those areas that most closely meet the definition of crucial habitat based on the WGWC definitions; and 6 represents "least crucial" areas, or those areas that least closely meet the definition of crucial habitat based on the WGWC definitions.
Values of 9999 indicate that data is unavailable for this hexagon.
Field definitions: ch_rank (Crucial Habitat): Places that are likely to provide the natural resources important to aquatic and terrestrial wildlife, including species of concern, as well as hunting and fishing species. This is the defaul layer shown in the WGA CHAT online map (http://westgovchat.org/map). ter_rank (Terrestrial Crucial Habitat): Places that are likely to provide the natural resources important to terrestrial wildlife species (most likely any non-fish species), including species of concern, as well as hunting and fishing species. aq_rank (Aquatic Crucial Habitat): Places that are likely to provide the natural resources important to aquatic (primarily fish) species, including species of concern, as well as hunting and fishing species.
ter_soc (Terrestrial Species of Concern): Species of state and/or national conservation importance that occur on land. May include birds, mammals, amphibians, reptiles, insects, plants and invertebrates.
aq_soc (Aquatic Species of Concern): Species of state and/or national conservation importance that occur in water. May include native freshwater and anadromous fishes; freshwater mussels and snails; crayfish; fairy, clam or tadpole shrimps; and aquatic insects. soc (Species of Concern): Was not utilized in the Oregon crucial habitat analysis, so all values are coded as null (9999).
ls_cond (Landscape Condition): Was not utilized in the Oregon crucial habitat analysis, so all values are coded as null (9999).
intact_ls (Intact Landscapes, or Large Natural Areas): Large Intact Blocks or other dataset that identifies large areas of native habitat that are relatively intact or have low levels of anthropogenic impact.
nat_veg (Natural Vegetation Communities): Dataset mapping natural vegetation communities of conservation concern, which may include clusters or patches of a natural community. States may have their own datasets mapping natural communities, or may have used the WGA Landscape Integrity Workgroups’ Ecological Systems of Concern map.
ls_corr (Landscape Corridors, or Connectivity): Landscape - scale permeability or connectivity. States may have used their own dataset mapping connectivity, or may have used the WGA Landscape Integrity Workgroup’s map of Important Connectivity Zones.
ls_merge (Landscape Condition Summary): Was not utilized in the Oregon crucial habitat analysis, so all values are coded as null (9999).
fh2o_int (Freshwater Integrity): Measure of freshwater habitat condition, typically including landscape variables and land use variables that are known to impact aquatic ecological systems. wet_rip (Wetland and/or Riparian Habitat Distribution): Areas that represent unique and/or sensitive environments and function to support animal and plant diversity with respect to wildlife objectives and connectivity. spp_corr (Species or Wildlife Corridors): Was not utilized in the Oregon crucial habitat analysis, so all values are coded as null (9999).
ter_seri (Terrestrial Species of Economic and/or Recreational Importance): Terrestrial game species especially if habitat needs are not already covered by mapping "Species of concern". aq_seri (Aquatic Species of Economic and/or Recreational Importance): Was not utilized in the Oregon crucial habitat analysis, so all values are coded as null (9999).
seri (Species of Economic and/or Recreational Importance): Was not utilized in the Oregon crucial habitat analysis, so all values are coded as null (9999).
otherA: Additional attributes provided from state specific data sources, or analysis. In the case of Oregon, this field represents areas contained within Oregon Conservation Strategy Conservation Opportunity Areas.
WGA CHAT project, Team Metadata
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Arthur Rodriguez
Oregon Department of Fish and Wildlife
GIS Analyst, Oregon Conservation Strategy
4304 Fairview Industrial Dr. SE
Salem
OR
97302
arthur.h.rodriguez@state.or.us
503-947-0126
Arthur Rodriguez