akfordmg02

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: State & Private Forestry, Forest Health Protection

Originator: AK Dept. of Natural Resources

Publication_Date: 10/2002

Title: akfordmg02

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name: Forest Insect & Disease Conditions in Alaska

Issue_Identification: akfordmg02

Publication_Information:

Publication_Place: Anchorage, AK

Publisher: USDA Forest Service, S&PF, FHP

Online_Linkage: <http://agdc.usgs.gov/data/projects/fhm/#K>

Description:

Abstract:

This data represents areas of forest damage due to insect infestation, disease, winter damage, fire, flood, landslides, and windthrow. The information was collected, cooperatively by aerial surveys by both the USFS, Forest Health Protection (FHP) and ADNR, Div. of Forestry. Surveys are conducted primarily in July and August so that pest "signatures" may be identified during the optimal period for symptom development of ocular estimation. The aerial survey is coordinated such 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. Surveys are flown in Southeast Alaska, Southcentral Alaska and Interior Alaska.

Purpose:

This data is collected to monitor forest health for the State of Alaska (FS- R10) and to identify insect and some disease pest trends. Large scale positional accuracy and repeatability can not be duplicated 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. Precise timing of the surveys for maximum symptom development is not always possible therefore, the aerial extent of damage generally cannot be fully 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 ground assessment to determine the extent of current season attacks. Also, some defoliator damage is not readily apparent from the air or occurs outside of the aerial survey window of time so that the actual extent (acreage) of damage cannot be accurately determined without extensive ground sampling.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 7/2002

Ending_Date: 8/2002

Currentness_Reference: ground condition

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -160.773171

East_Bounding_Coordinate: -122.385513

North_Bounding_Coordinate: 67.810228

South_Bounding_Coordinate: 54.503157

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: Disease

Theme_Keyword: cedar decline

Theme_Keyword: spruce aphid

Theme_Keyword: health

Place:

Place_Keyword: Alaska

Place:

Place_Keyword_Thesaurus: none

Place_Keyword: drainages

Place_Keyword: Region 10

Place_Keyword: Juneau

Place_Keyword: Anchorage

Place_Keyword: Keni

Place_Keyword: forests

Stratum:

Stratum_Keyword: Land

Stratum_Keyword: forests

Temporal:

Temporal_Keyword: 2002

Temporal_Keyword: summer

Access_Constraints:

To ensure distribution of the most current public information, please refer requests for data or products to Forest Health Protection, State & Private Forestry, AK region USDA Forest Service.

Use_Constraints:

It is not recommended the data be used at a scale larger than 1:250000. Any hardcopies or published datasets 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. User specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by USFS, State & Private Forestry or AK DNR.

Point_of_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: USDA Forest Service, S&PF R10

Contact_Person: Dustin Wittwer

Contact_Position: Aerial Survey Coordinatior

Contact_Address:

Address_Type: mailing and physical address

Address: 2770 Sherwood Lane, Suite 2A

Address: 550 West 7th Avenue, Suite 1450

City: Juneau

State_or_Province: AK

Postal_Code: 99801

Country: USA

Contact_Voice_Telephone: (907) 586 7971

Contact_Facsimile_Telephone: (907) 586 7971

Contact_Electronic_Mail_Address: dwittwer@fs.fed.us

Hours_of_Service: 800-1600 AST

Contact_Instructions: See Distribution_Information

Browse_Graphic:

Browse_Graphic_File_Name: <http://agdc.usgs.gov/data/projects/fhm/#K>

Browse_Graphic_File_Description: Major damage

Data_Set_Credit:

USDA Forest Service, Forest Health Protection, Alaska Department of Natural Resources, Division of Forestry

Security_Information:

Security_Classification: Unclassified

Native_Data_Set_Environment:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service Pack 1; ESRI ArcCatalog 8.1.2.671

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Attribute accuracy of forest damage is tested by visually comparing the source data with hard copy printouts or an interactive display.

Logical_Consistency_Report:

Polygons were processed in ArcView. Overlaping plygons are not present.

Completeness_Report:

Surveys in Alaska are meandering surveys predominantly following drainages and shorelines. Approximately 1/4 to 1/3 of the state is surveyed each year. The flightline file represents the flight path. The extent of visibility is roughly 2 miles.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Digital information collected using GPS for tracking and polygon placement accuracy. Polygons are sketched onto a computer screen or paper maps (USGS 1:250,000 hardcopy or digital maps). Background reference data is.

Quantitative_Horizontal_Positional_Accuracy_Assessment:

Horizontal_Positional_Accuracy_Value: variable and unquantified

Horizontal_Positional_Accuracy_Explanation:

error is a subjective quantity, contributed to by GPS error, error in background data spatial reference and sketch mapping approximation

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Geospatial_Data_Presentation_Form: raster digital data

Source_Scale_Denominator: 1:250000

Type_of_Source_Media: computer program

Source_Time_Period_of_Content:

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: Geolink

Source_Contribution:

Polygon information deliniated and attributed digitally at time of capture. USGS topographic-bathymetric series maps used as background with GPS real-time tracking.

Source_Information:

Source_Scale_Denominator: 1:250000

Type_of_Source_Media: Paper maps

Source_Citation_Abbreviation: USGS topographic-bathymetric series maps

Process_Step:

Process_Description:

Data collected at time of capture. Transformed into Arc/View 3.2 for editing and correction. Multiple data sets were merged and projected to Albers equal area (AK), NAD 27. Point data was buffered 100 meters and merged with polygon layer. Multipart polygons were converted to single part. Overlaping polygons were disected.

Process_Date: 12/2001

Process_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Dustin Wittwer

Contact_Organization: USDA Forest Service, S&PF, FHP

Contact_Position: Aerial Survey Specialist

Contact_Voice_Telephone: 907 586 7971

Contact_Electronic_Mail_Address: dwittwer@fs.fed.us

Cloud_Cover: varies

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon

Point_and_Vector_Object_Count: 1230

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Label point

Point_and_Vector_Object_Count: 2375

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: GT-polygon composed of chains

Point_and_Vector_Object_Count: 2375

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point

Point_and_Vector_Object_Count: 4

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Map_Projection:

Map_Projection_Name: Albers Conical Equal Area

Albers_Conical_Equal_Area:

Standard_Parallel: 55.000000

Standard_Parallel: 65.000000

Longitude_of_Central_Meridian: -154.000000

Latitude_of_Projection_Origin: 50.000000

False_Easting: 0.000000

False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.016233

Ordinate_Resolution: 0.016233

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1927

Ellipsoid_Name: Clarke 1866

Semi-major_Axis: 6378206.400000

Denominator_of_Flattening_Ratio: 294.978698

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: akfordmg02

Entity_Type_Definition: Polygon attributes

Attribute:

Attribute_Label: FID

Attribute_Definition: Internal feature number.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition: Feature geometry.

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Coordinates defining the features.

Attribute:

Attribute_Label: AREA

Attribute_Definition: area in map units (meters)

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: PERIMETER

Attribute_Definition: perimeter in map units (meters)

Attribute_Definition_Source: ESRI

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: ACRES

Attribute_Definition: acres

Attribute_Domain_Values:

Unrepresentable_Domain: Whole numbers that are automatically generated.

Attribute:

Attribute_Label: DAMAGE3

Attribute_Definition: damage agent

Attribute_Definition_Source: USFS, AKDNR

Attribute:

Attribute_Label: DAMAGE4

Attribute_Definition: damage agent with intensity

Attribute_Definition_Source: USFS, AK DNR

Attribute_Domain_Values:

Attribute:

Attribute_Label: NUM_TREES

Attribute_Definition: Number of trees damaged

Attribute_Domain_Values:

Unrepresentable_Domain:

Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: TPA

Attribute_Definition: trees per acre estimate

Attribute_Definition_Source: ESRI

Attribute:

Attribute_Label: SURVEY_YR

Attribute_Definition: year surveyed

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. Acres for each polygon are rounded for display. Mortality agents/damage are also attributed with an estimate of the number of trees killed or a trees per acre killed.

ALB Aspen leaf blight ALD Alder defoliation ALM Aspen Leaf Miner ALR Alder leafroller ASD Aspen defoliation ASF Alder sawfly BAP Birch aphid BHB Black-headed budworm BHS BHB/HSF BID Birch defoliation BLM Birch Leaf Miner BLR Birch leaf roller BSB BHB/SPB CDL Cedar decline CLB Cottonwood leaf beetle CLM Cottonwood leaf miner COD Conifer defoliation CTB Conifer top breakage CWD Cottonwood defoliation CWW CWD and WID FIR Fire damage FLO Flooding/high-water damage FRB Sub Alpine Fur Beetle HCK Hemlock canker HLO Hemlock looper HSF Hemlock sawfly HTB Hardwood top breakage HWD Hardwood defoliation IPB IPS and SPB IPS Ips engraver beetle LAB Larch beetle LAS Larch sawfly LAT Large aspen tortrix OUT Out (island of no damage) POD Porcupine damage SBM Spruce/Larch budmoth SBR Spruce broom rust SBW Spruce budworm SLD Landslide/Avalanche SMB Spear-marked black moth SNA Spruce needle aphid SNR Spruce needle rust SPA Spruce aphid SPB Spruce beetle SPC SPB and CLB WID Willow defoliation WIR Willow Rust WLM Willow Leafblotch Miner WNT Winter damage WTH Windthrow/Blowdown

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization:

AK Department of Natural Resources - Land Records Information Section

Contact_Person: GIS Public Access Coordinator

Contact_Position: GIS Public Access Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 550 W. 7th Ave., Suite 706

City: Anchorage

State_or_Province: AK

Postal_Code: 99501

Country: USA

Contact_Voice_Telephone: 907 269-8833

Contact_Facsimile_Telephone: 907 269-8920

Contact_Electronic_Mail_Address: GIS_Public_Access@dnr.state.ak.us

Hours_of_Service: 800-1600 AST M-F

Contact_Instructions:

Fax completed "Request for DNR GIS Data" form. Form can be found at <URL:http://www.asgdc.state.ak.us/homehtml/orderform.html>

Distribution_Liability:

USFS, State & Private Forestry and 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 USFS State & Private Forestry or 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 USFS State & Private Forestry or the State of Alaska's liability to the requestor or anyone else exceed the fee paid for the electronic service or product.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 0.548

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://agdc.usgs.gov/data/projects/fhm>

Offline_Option:

Offline_Media: CD_ROM

Recording_Format: CD

Ordering_Instructions:

Data can be downloaded, free of charge at: <http://agdc.usgs.gov/data/projects/fhm>

Metadata_Reference_Information:

Metadata_Date: 20021008

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: USFS, State & Private Forestry

Contact_Position: Aerial Survey Coordinator

Contact_Address:

Address_Type: mailing and physical address

Address: 2770 Sherwood Lane, suite 2A

City: Juneau

State_or_Province: AK

Postal_Code: 99801

Country: USA

Contact_Voice_Telephone: 907-586-7971

Contact_Facsimile_Telephone: 907-586-7848

Hours_of_Service: 0800-1600 M-F

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Access_Constraints: None

Metadata_Use_Constraints:

If the user has modified the data in any way they are obligated to describe the types of modifications they have performed in the supporting metadata file. User specifically agrees not to imply that changes they made were approved by State & Private Forestry or the State of Alaska Department of Natural Resources.

Metadata_Extensions:

Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>

Profile_Name: ESRI Metadata Profile