Forest Damage Survey

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Alaska Dept. of Natural Resources, Land Records Info. Section
Publication_Date: 1998
Title: Forest Damage Survey
Edition: Damage Year of 1998
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Forest Damage
Issue_Identification: fordmg98
Publication_Information:
Publication_Place: Anchorage, AK
Publisher: ADNR, LRIS

Description:
Abstract:
This data represents areas of forest damage due to insect infestation, fire, flood, landslides, windthrow and other mortalities. The information was collected by aerial surveys by both the USFS and ADNR, Div. of Forestry in cooperation with the Forest Health Protection (FHP) project.

Surveys are conducted in July and August so that pest "signatures" may be obtained during the optimal period for symptom development of ocular estimation. The aerial survey is coordinated with known pest outbreaks so that the maximum extent of recent bark beetle damage (fading trees) and insect defoliation (discoloration, foliage loss) patterns may be determined. Aerial survey flights are termed as "local" if they can be completed within 1 day from the survey base and "regional' if more than 1 day is required to complete the survey reconnaissance.

Purpose:
This data is collected to monitor the forest health for the State of Alaska and to locate insect and some disease pest trends. Accuracy and repeatability is not duplicatable due to the nature of aerial survey data collection. This data should be used as an initial identification of pest areas or landscape level planning but further surveys or ground truthing is necessary for area planning or management.

More specific delineation of pest damage boundaries (polygons) may be obtained by later ground assessments or approximation of several individual years of mapping data. However, precise timing of the surveys for maximum symptom development is not always possible so that the aerial extent of damage generally cannot be accurately mapped for all pests. Also, many pest symptoms are delayed from the time of actual damage so that visual symptoms do not appear for several months after the initial damage. In the case of some bark beetle damage (e.g., spruce beetle) symptoms of "red-topped"

or "fading red" trees do not show until the season after initial attack. Precise estimates of the extent of bark beetle damage often required a corroborative ground assessment to determine the extent of current season attacks. Also, some defoliator damage is not readily apparent from the air so that the actual extent (acreage) of damage cannot be accurately determined without extensive ground sampling

Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 199811
Currentness_Reference: Publication Date

Status:
Progress: Complete
Maintenance_and_Update_Frequency: None Planned

Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -158.79402753
East_Bounding_Coordinate: -124.40943228
North_Bounding_Coordinate: 65.88252133
South_Bounding_Coordinate: 54.43997692

Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: forest
Theme_Keyword: damage
Theme_Keyword: pest
Theme_Keyword: insect
Theme_Keyword: aerial
Theme_Keyword: survey
Theme_Keyword: spruce beetle
Theme_Keyword: spruce beetle
Theme_Keyword: disease

Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Alaska
Place_Keyword: drainages

Access_Constraints:
To ensure distribution of the most current public information, please refer requests for data or products to the Alaska Department of Natural Resources, Land Records Information Section.

Use_Constraints:
It is not recommended the data be used at a scale larger than 1:250000.

Any hardcopies utilizing these data sets shall clearly indicate their source. If the user has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. User specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by Alaska Department of Natural Resources.

Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Roger Burnside, Forest Entomologist
Contact_Organization: AK Department of Natural Resources - Division of Forestry
Contact_Position: Forest Entomologist
Contact_Address:
Address_Type: mailing and physical address
Address: 3601 C Street, Suite 1034
City: Anchorage
State_or_Province: AK
Postal_Code: 99503-5937
Country: USA
Contact_Voice_Telephone: 907/269-8460
Contact_Facsimile_Telephone: 907/561-6659
Contact_Electronic_Mail_Address: rogerb@dnr.state.ak.us
Hours_of_Service: 800-1600 AST
Contact_Instructions: See Distribution_Information

Data_Set_Credit:
U.S.F.S. Forest Health Protection ADNR, Division of Forestry

Native_Data_Set_Environment:
SunOS, 5.5.1, sun4m UNIX ARC/INFO version 7.1.1


Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Attribute accuracy is tested by visually comparing the source with hard copy printouts or interactive display of forest damage data on a computer. Frequency tables also verified standard coding.

Logical_Consistency_Report:
Polygon topology present. Polygons crossing quadrangle boundaries were edge matched.

Completeness_Report:
Surveys in Alaska are meandering surveys predominantly following drainages. Approximately 1/4 to 1/3 of the state is surveyed each year. The flightline file represents the flight path and extent of visibility.

Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Paper copies of the digital information were verified against the mylars by R. Burnside-ADNR and K.Matthews-FHP.

Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
US Forest Service Forest Health Protection and Alaska Dept. of Natural Resources
Publication_Date: 199808
Title: Forest Damage - Aerial Survey Collection of Data
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Forest Damage
Issue_Identification: Aerial Survey
Publication_Information:
Publication_Place: Anchorage, AK
Publisher: USFS FHP & ADNR
Source_Scale_Denominator: 250000
Type_of_Source_Media: 1:250000 scale USGS topographic-bathymetric series maps
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 199808
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: none
Source_Contribution: base data
Source_Information:
Source_Citation:
Citation_Information:
Originator: US Forest Service Forest Health Protection
Publication_Date: 199808
Title: Forest Damage - Transfer to georeferenced mylar overlays.
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Forest Damage
Issue_Identification: Mylar transfer
Publication_Information:
Publication_Place: Anchorage, AK
Publisher: USFS FHP
Source_Scale_Denominator: 250000
Type_of_Source_Media:
1:250000 scale USGS topographic-bathymetric series maps data transferred to georeferenced mylar overlays.
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1998
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: none
Source_Contribution: mylar overlays
Source_Information:
Source_Citation:
Citation_Information:
Originator: Arctic Geoscience of Anchorage, Alaska
Publication_Date: 1998
Title: Forest Damage - Generating Arc/Info Files
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Forest Damage
Issue_Identification: Arc/Info Coverage Generation
Publication_Information:
Publication_Place: Anchorage, AK
Publisher: Arctic Geoscience
Source_Scale_Denominator: 250000
Type_of_Source_Media:
Georeferenced mylar overlays scanned and converted to Arc/Info files.
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1998
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: none
Source_Contribution:
Georeferenced mylar overlays scanned and converted to Arc/Info files.
Source_Information:
Source_Citation:
Citation_Information:
Originator: Alaska Department of Natural Resources
Publication_Date: 1998
Title: Forest Damage
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Forest Damage
Issue_Identification: Spatial & Attribute Editing
Publication_Information:
Publication_Place: Anchorage, AK
Publisher: ADNR
Source_Scale_Denominator: 250000
Type_of_Source_Media: Attribute information added.
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1998
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: none
Source_Contribution: Spatial and attribute information.

Process_Step:
Process_Description:
Surveys were conducted by USFS FHP personnel in cooperation with ADNR entomologist. The southeast Alaska portion was conducted by Dustin Wittwer & Mark Schultz, FHP. Prince William Sound was conducted by Ed Holsten & Kathy Matthews, FHP. Western interior Alaska by Ed Holsten & Ken Zogas, FHP. Eastern interior Alaska, Kenai Peninsula, and the Anchorage bowl by Roger Burnside, ADNR, and Kathy Matthews, FHP. Afognak/Kodiak Islands by Kathy Matthews & Beth Schulz, FHP.

The data is recorded at the time of capture on 1:250,000 scale USGS topographic-bathymetric series maps. Data on the Kenai Peninsula, Afognak Island, and Matanuska/Susitna River valley is collected from a Cessna 206 at 500 - 1000 ft above ground level (AGL). Interior Alaska data is collected from a Beaver at 500-1000 ft AGL.

Damage areas on the base maps are transferred to georeferenced mylar overlays by FHP personnel. The mylars are verified by K. Matthews, FHP as to accuracy of rendition, location, and coding. The mylars were scanned and converted to Arc/Info files through contract with Arctic Geoscience of Anchorage, Alaska.

These files were plotted and verified with the mylars for attribute and topological accuracy.

Process_Date: 1998


Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 3364
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 3614
SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains
Point_and_Vector_Object_Count: 3365


Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Albers Conical Equal Area
Albers_Conical_Equal_Area:
Standard_Parallel: 55
Standard_Parallel: 65
Longitude_of_Central_Meridian: -154
Latitude_of_Projection_Origin: 50
False_Easting: 0.00000
False_Northing: 0.00000
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 1.0
Ordinate_Resolution: 1.0
Planar_Distance_Units: METERS
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1927
Ellipsoid_Name: Clarke 1866
Semi-major_Axis: 6378206.4
Denominator_of_Flattening_Ratio: 294.98


Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: FORDMG98.PAT
Entity_Type_Definition: Polygon attributes
Entity_Type_Definition_Source: ARC/INFO
Attribute:
Attribute_Label: DAMAGE
Attribute_Definition: Damage Code assigned to polygon
Attribute_Definition_Source: USFS FHP & ADNR
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: BAP
Enumerated_Domain_Value_Definition: Birch Aphid defoliation
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: BHB
Enumerated_Domain_Value_Definition: Black-headed budworm defoliation
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: BID
Enumerated_Domain_Value_Definition: Birch Defoliation - causal agent not identified
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: CLB
Enumerated_Domain_Value_Definition: Cottonwood leaf beetle defoliation
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: COD
Enumerated_Domain_Value_Definition: Conifer defoliation - causal agent & host not identified
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: CWD
Enumerated_Domain_Value_Definition: Cottonwood defoliation - causal agent not identified
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: FIR
Enumerated_Domain_Value_Definition: Fire mortality (note this is not all fire damage for the state)
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: FLO
Enumerated_Domain_Value_Definition: Flood or high water mortality - host not identified
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: HSF
Enumerated_Domain_Value_Definition: Hemlock sawfly defoliation
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: IPB
Enumerated_Domain_Value_Definition: Ips top kill and Spruce bark beetle mortality in same polygon
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: IPS
Enumerated_Domain_Value_Definition: Ips beetle mortality or topkill
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: LAS
Enumerated_Domain_Value_Definition: Larch sawfly defoliation
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: LAT
Enumerated_Domain_Value_Definition: Large Aspen Tortrix defoliation
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: OUT
Enumerated_Domain_Value_Definition: polygon with no damage inside of damage polygon
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: POD
Enumerated_Domain_Value_Definition: Porcupine damage - host not identified
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: SBM
Enumerated_Domain_Value_Definition: Spear-marked black moth defoliation - host not identified
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: SBR
Enumerated_Domain_Value_Definition: Spruce broom rust discoloration
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: SBW
Enumerated_Domain_Value_Definition: Spruce budworm defoliation
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: SLD
Enumerated_Domain_Value_Definition: Landslide
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: SNA
Enumerated_Domain_Value_Definition: Spruce needle aphid defoliation
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: SNR
Enumerated_Domain_Value_Definition: Spruce needle rust discoloration
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: SPBL
Enumerated_Domain_Value_Definition: Spruce bark beetle mortality Severity = Light
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: SPBM
Enumerated_Domain_Value_Definition: Spruce bark beetle mortality Severity = Moderate
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: SPBH
Enumerated_Domain_Value_Definition: Spruce bark beetle mortality Severity = High
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: WID
Enumerated_Domain_Value_Definition: Willow defoliation - causal agent not identified
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: WNT
Enumerated_Domain_Value_Definition: Winter discoloration - host not identified
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Enumerated_Domain_Value: WTH
Enumerated_Domain_Value_Definition: Windthrow mortality - host not identified
Enumerated_Domain_Value_Definition_Source: USFS FHP & ADNR
Attribute:
Attribute_Label: ACRES
Attribute_Definition: Number of acres associated with each polygon
Attribute_Definition_Source: Calculated, ADNR
Attribute_Domain_Values:
Unrepresentable_Domain:
There are no limits to the size of a polygon. Acres for each polygon are calculated by dividing the area of a polygon by 4056.8564 which equals 1 square meter. Acres are rounded for display.

Attribute_Units_of_Measure: Acres
Overview_Description:
Entity_and_Attribute_Overview:

Areas of damage are delineated on the base maps as polygons and labeled with an agent code and for some insects a severity code. Inherent in many agent codes is the host species. The first three letters of each polygon label identify the damage, causal agent, and host species. The fourth letter, if present, identifies severity.

Damage/Causal Agent/Host Codes used in the 1998 data set are: BAP - Birch Aphid defoliation BHB - Black-headed budworm defoliation BID - Birch Defoliation - causal agent not identified CLB - Cottonwood leaf beetle defoliation COD - Conifer defoliation - causal agent & host not identified CWD - Cottonwood defoliation - causal agent not identified FIR - Fire mortality (note this is not all fire damage for the state) FLO - Flood or high water mortality - host not identified HSF - Hemlock sawfly defoliation IPB - Ips top kill and Spruce bark beetle mortality in same polygon IPS - Ips beetle mortality or topkill LAS - Larch sawfly defoliation LAT - Large Aspen Tortrix defoliation OUT - polygon with no damage inside of damage polygon POD - Porcupine damage - host not identified SBM - Spear-marked black moth defoliation - host not identified *SBR - Spruce broom rust discoloration SBW - Spruce budworm defoliation SLD - Landslide SNA - Spruce needle aphid defoliation SNR - Spruce needle rust discoloration SPB - Spruce bark beetle mortality WID - Willow defoliation - causal agent not identified WNT - Winter discoloration - host not identified WTH - Windthrow mortality - host not identified

* Spruce broom rust is endemic to nearly all areas of the state, however mapping was not consistent nor representative.

Severity Codes used in this data set: Light = < 10% of the host species within the polygon were affected. Moderate = 11% to 30% of the host species within the polygon were affected. High = > 31% of the host species within the polygon were affected.

Entity_and_Attribute_Detail_Citation: none


Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
AK Department of Natural Resources - Land Records Information Section
Contact_Position: GIS Public Access Coordinator
Contact_Address:
Address_Type: mailing and physical address
Address: 3601 C Street Suite 916
City: Anchorage
State_or_Province: AK
Postal_Code: 99503
Country: USA
Contact_Voice_Telephone: 907/269-8833
Contact_Facsimile_Telephone: 907/563-1497
Contact_Electronic_Mail_Address: GIS_Public_Access@dnr.state.ak.us
Hours_of_Service: 800-1600 AST
Contact_Instructions:
Fax completed "Request for DNR GIS Data" form. Form can be found at http://www.dnr.state.ak.us/ssd/gisdata/odrfrm.htm

Distribution_Liability:
The State of Alaska makes no express or implied warranties (including warranties of merchantability and fitness) with respect to the character, function, or capabilities of the electronic services or products or their appropriateness for any users purposes. In no event will the State of Alaska be liable for any incidental, indirect, special, consequential or other damages suffered by the user or any other person or entity whether from the use of the electronic services or products, any failure thereof or otherwise, and in no event will the State of Alaska s liability to the requestor or anyone else exceed the fee paid for the electronic service or product.


Metadata_Reference_Information:
Metadata_Date: 19980324
Metadata_Review_Date: 1998
Metadata_Future_Review_Date: 19990101
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: ADNR, LRIS, GIS Unit
Contact_Person: Michele Gorham
Contact_Position: GIS Analyst
Contact_Address:
Address_Type: mailing and physical address
Address: 3601 C Street Suite 916
City: Anchorage
State_or_Province: AK
Postal_Code: 99503
Country: USA
Contact_Voice_Telephone: 907/269-8855
Contact_Facsimile_Telephone: 907/563-1497
Contact_Electronic_Mail_Address: michele_gorham@dnr.state.ak.us
Hours_of_Service: 800-1600 AST
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: Version of June 8, 1994
Metadata_Time_Convention: Local Time
Metadata_Access_Constraints: none
Metadata_Use_Constraints: none

Generated by mp on Tue Jul 21 09:55:20 1998