Metadata: Identification_Information: Citation: Citation_Information: Originator: Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Coastal Services Center (CSC) Publication_Date: 201104 Title: Klawock Lagoon, Alaska Benthic Habitats 2011 Geospatial_Data_Presentation_Form: vector digital data Publication_Information: Publication_Place: Charleston, SC Publisher: NOAA's Ocean Service, Coastal Services Center (CSC) Online_Linkage: ftp://ftp.csc.noaa.gov/pub/benthic/ak_kl11.zip Online_Linkage: http://www.csc.noaa.gov/digitalcoast/data/benthiccover/download.html Online_Linkage: http://www.csc.noaa.gov/ Description: Abstract: The Klawock River on Alaska's Prince of Wales Island drains a 29,061 acre watershed with 132 miles of streambed habitat supporting seven salmon and trout species. Traditionally the river and lagoon supported salmon harvests exceeding 30,000 fish annually. The salmon fishery is an important economic factor and food source in the Klawock area. It is also an important cultural resource to local inhabitants. In 1964 a causeway was constructed blocking access to the lagoon from adjacent Klawock Bay. This has resulted in dramatic decreases in salmon harvests. The Nature Conservancy has lead a broad partnership to construct a culvert through the causeway thus re-establishing free passage between the river and Klawock Bay which is expected to help restore a full use of the river as spawning habitat by salmon and generally improve the quality of the lagoon. Benthic habitats in the lagoon and adjacent Klawock Bay and Klawock Harbor were mapped in spring 2011 to establish a baseline of benthic communities in the area with emphasis on eelgrass beds which are essential to the early survival of salmon fry. The habitat map will guide ongoing monitoring activities in the lagoon and form the basis of future change detection efforts. Aerial multi-spectral imagery was collected over the lagoon, bay, and harbor during the week of April 19, 2011. The mission was timed to coincide with the breaching of the causeway. The environmental considerations important to successful benthic mapping were incorporated into the mission planning. These included, imagery to be collected within 1.5 hours of a zero or negative tide, clear water conditions (no algal blooms, or sediment plumes from runoff), low winds to avoid surface waves, and sufficient solar illumination to image submerged areas. These collection parameters were defined by the Coastal Services Center prior to collection of the imagery. Despite weather and water conditions which were not ideal, imagery adequate to map most of the habitats in the lagoon was successfully collected on April 19, 2011. Eelgrass habitats did not have sufficient biomass at the time of the aerial mission to be mapped from that source so eelgrass habitats were determined by two field-digitizing processes, one in August 2010 and one in September 2011. The final hybrid map captures habitats 10m x 10m or larger and has the same positional accuracy as the source imagery. Field data to guide the mapping was supplied by several project partners. A comparison between the field data and the map shows high levels of agreement, although no traditional accuracy assessment was conducted. Purpose: The data was developed to establish a baseline of benthic habitats in the lagoon and support future change detection activities. These data contribute to assessing conditions prior to opening of a new culvert between the Klawock River, the lagoon, and Klawock Bay to re-establish salmon use of the Klawock River. The focus of the mapping was on shallow water benthic habitats with particular concern for eelgrass meadows. Supplemental_Information: The study area covers Klawock Lagoon, KLawock Harbor, and Klawock Bay, Borough of Juneau, Alaska. Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20110419 Currentness_Reference: ground condition Status: Progress: Complete Maintenance_and_Update_Frequency: None planned Spatial_Domain: Bounding_Coordinates: West_Bounding_Coordinate: -133.105445 East_Bounding_Coordinate: -133.074666 North_Bounding_Coordinate: 55.558106 South_Bounding_Coordinate: 55.542561 Keywords: Theme: Theme_Keyword_Thesaurus: ISO 19115 Topic Category Theme_Keyword: environment Theme_Keyword: imageryBaseMapsEarthCover Theme: Theme_Keyword_Thesaurus: None Theme_Keyword: Environmental Monitoring Theme_Keyword: NOAA Theme_Keyword: Benthic Theme_Keyword: Habitat Theme_Keyword: The Nature Conservancy Place: Place_Keyword_Thesaurus: none Place_Keyword: U.S. Place_Keyword: Alaska Place_Keyword: Klawock Lagoon Place_Keyword: Klawock Harbor Place_Keyword: Klawock Bay Access_Constraints: Data is available upon request Use_Constraints: Data should not be changed or modified by anyone other than NOAA Point_of_Contact: Contact_Information: Contact_Person_Primary: Contact_Person: CRS Program Manager Contact_Address: Address_Type: mailing and physical Address: 2234 South Hobson Avenue City: Charleston State_or_Province: SC Postal_Code: 29405-2413 Country: USA Contact_Voice_Telephone: 843-740-1200 Contact_Electronic_Mail_Address: clearinghouse@noaa.gov Security_Information: Security_Classification_System: None Security_Classification: Unclassified Security_Handling_Description: None Native_Data_Set_Environment: Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 3; ESRI ArcCatalog 9.3.1.3000 Data_Quality_Information: Attribute_Accuracy: Attribute_Accuracy_Report: Polygon labels and boundaries were visually inspected for delineation precision and attribute accuracy. In August 2011 a draft habitat map was reviewed by CSC staff and project partners to identify areas of error or confusion. The users did not identify any significant errors in the map. In September, TNC staff visited 59 sites in the bay and lagoon and collected field photography to refine the map and further assess its quality. These field photos were collected at pre-selected sites to confirm conditions on the ground. A hand-held GPS unit was used to ensure that the photo was taken to obtain a coordinate for the photo to ensure successful comparison to the map. In this initial assessment, X of X photos were in agreement with the draft map. Logical_Consistency_Report: Polygon topology present. Every polygon has a label, there are no multiple labels within polygons, there are no contiguous polygons. Completeness_Report: Minimum mapping unit for habitat polygons was 100 square meters. The study area boundary for the project was defined by TNC. Benthic habitat features were captured and classified according to the rules, conventions, and descriptions in the Statement of Work. Positional_Accuracy: Horizontal_Positional_Accuracy: Horizontal_Positional_Accuracy_Report: An independent NSSDA spatial accuracy assessment was not performed on the imagery; however, imagery from the GeoScanner system typically produces ortho-rectified products with a spatial accuracy meeting or exceeding +/- 3m of position on the group CE95. Lineage: Source_Information: Source_Citation: Citation_Information: Originator: Geovantage, Inc Publication_Date: 2011 Title: 2011 Benthic Habitat Geoscanner Imagery Source_Scale_Denominator: 12000 Type_of_Source_Media: Digital orthophotos Source_Time_Period_of_Content: Time_Period_Information: Single_Date/Time: Calendar_Date: 20110419 Source_Currentness_Reference: ground condition Source_Citation_Abbreviation: Imagery Source_Contribution: photographic signature for interpretation of benthic habitat data. Process_Step: Process_Description: The imagery was flown on 4/19/2011 between 9:35 and 10:24 A.M. by Geovantage Inc. The horizontal spatial accuracy of the imagery reported by the vendor is within +/- 3 meters CE95 of position on the ground. The radiometric resolution of the 4 band image composites is 12-bit. The imagery was processed to remove atmospheric effects such as haze and to highlight the spectral response of submerged areas. The imagery has some exposure variation between adjacent flight lines and between sunlit and cloud shaded areas. The 4 band imagery is provided in GeoTIFF format. The imagery was captured at a spatial resolution (pixel size) of 0.25m x 0.25m and was delivered in a Universal Transverse Mercator - Zone 8 projection using the NAD1983 datum. Process_Date: 20110400 Process_Step: Process_Description: The benthic habitat map was developed through image segmentation using the Definiens Developer software. Image segments representing unique spectral and spatial features were generated from the source imagery at the XXX scale. Segments were then labeled into one of four habitat classes (coastal marsh, unconsolidated sediments, macroalgae, and eelgrass) by visual interpretation of the imagery and comparison to ground photos. Due to poor water clarity in Klawock Lagoon eelgrass habitat boundaries in the lagoon were generated by staff kayaking along the perimeter of the beds with a GPS logging their position every second. Two of these kayak-digitized polygons (one collected in August 2010 and one in September 2011) were merged to create a maximum extent of eelgrass polygon which was incorporated into the benthic habitat map. Process_Date: 201110 Cloud_Cover: 0 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: 2165 Spatial_Reference_Information: Horizontal_Coordinate_System_Definition: Planar: Grid_Coordinate_System: Grid_Coordinate_System_Name: Universal Transverse Mercator Universal_Transverse_Mercator: UTM_Zone_Number: 8 Transverse_Mercator: Scale_Factor_at_Central_Meridian: 0.999600 Longitude_of_Central_Meridian: -135.000000 Latitude_of_Projection_Origin: 0.000000 False_Easting: 500000.000000 False_Northing: 0.000000 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 1983 Ellipsoid_Name: Geodetic Reference System 80 Semi-major_Axis: 6378137.000000 Denominator_of_Flattening_Ratio: 298.257222 Entity_and_Attribute_Information: Detailed_Description: Entity_Type: Entity_Type_Label: ak_kl11 Entity_Type_Definition: SCHEME class Entity_Type_Definition_Source: NOAA 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: CLASS Attribute_Definition: Classes describe the general dominant life forms or the physiography and composition of the substrate. Attribute_Definition_Source: SCHEME Attribute_Domain_Values: Codeset_Domain: Codeset_Name: SCHEME System Codeset_Source: Florida Fish and Wildlife Conservation Commission Attribute: Attribute_Label: SUBCLASS1 Attribute_Definition: Subclasses define habitats with finer resolution descriptions or with geographic extents that require field measurements for verification. Attribute_Definition_Source: SCHEME Attribute_Domain_Values: Codeset_Domain: Codeset_Name: SCHEME System Codeset_Source: Florida Fish and Wildlife Conservation Commission Attribute: Attribute_Label: SUBCLASS2 Attribute_Definition: Subclasses define habitats with finer resolution descriptions or with geographic extents that require field measurements for verification. Attribute_Definition_Source: SCHEME Attribute_Domain_Values: Codeset_Domain: Codeset_Name: SCHEME System Codeset_Source: Florida Fish and Wildlife Conservation Commission Attribute: Attribute_Label: SUBCLASS3 Attribute_Definition: Subclasses define habitats with finer resolution descriptions or with geographic extents that require field measurements for verification. Attribute_Definition_Source: SCHEME Attribute_Domain_Values: Codeset_Domain: Codeset_Name: SCHEME System Codeset_Source: Florida Fish and Wildlife Conservation Commission Attribute: Attribute_Label: SUBCLASS4 Attribute_Definition: Subclasses define habitats with finer resolution descriptions or with geographic extents that require field measurements for verification. Attribute_Definition_Source: SCHEME Attribute_Domain_Values: Codeset_Domain: Codeset_Name: SCHEME System Codeset_Source: Florida Fish and Wildlife Conservation Commission Attribute: Attribute_Label: Modifier Attribute_Definition: The modifiers allow detailed information to be included at all levels of the structure. Attribute_Definition_Source: SCHEME Attribute_Domain_Values: Codeset_Domain: Codeset_Name: SCHEME System Codeset_Source: Florida Fish and Wildlife Conservation Commission Attribute: Attribute_Label: TAXONOMIC Attribute_Definition: Taxonomic modifiers classify complex habitats with mixed geological and biological components. Attribute_Definition_Source: SCHEME Attribute_Domain_Values: Codeset_Domain: Codeset_Name: SCHEME System Codeset_Source: Florida Fish and Wildlife Conservation Commission Attribute: Attribute_Label: SCHEME_COD Attribute_Definition: Numeric value for SCHEME class and subclass units Attribute_Definition_Source: SCHEME Attribute_Domain_Values: Codeset_Domain: Codeset_Name: SCHEME System Codeset_Source: Florida Fish and Wildlife Conservation Commission Distribution_Information: Distributor: Contact_Information: Contact_Organization_Primary: Contact_Organization: NOAA Coastal Services Center Contact_Position: Clearinghouse Manager Contact_Address: Address_Type: mailing and physical Address: 2234 South Hobson Avenue City: Charleston State_or_Province: SC Postal_Code: 29405-2413 Country: USA Contact_Voice_Telephone: 843 740 1210 Contact_Facsimile_Telephone: 843 740 1224 Contact_Electronic_Mail_Address: clearinghouse@noaa.gov Resource_Description: Downloadable Data Distribution_Liability: NOAA manages much of the data to users of digital geographic data.NOAA is in no way condoning or endorsing the application of this data for any given purpose.It is the sole responsibility of the user to determine whether or not the data is suitable for the intended purpose.It is also the obligation of the user to apply the data in an appropriate and conscientious manner.NOAA provides no warranty,nor accepts any liability occurring from any incomplete,incorrect, or misleading data, or from any incorrect,incomplete, or misleading use of the data.Much of the data is based on and maintained with ARC/GIS software developed by the Environmental Systems Research Institute (ESRI).In addition, much of the information presented uses conventions and terms popularized by ARC/GISand its user community.NOAA in no way represents the interests of ESRI,nor acts as agents for them. Metadata_Reference_Information: Metadata_Date: 20100625 Metadata_Contact: Contact_Information: Contact_Organization_Primary: Contact_Organization: NOAA Coastal Services Center Contact_Position: Clearinghouse Manager Contact_Address: Address_Type: mailing and physical Address: 2234 South Hobson Avenue City: Charleston State_or_Province: SC Postal_Code: 29405-2413 Country: USA Contact_Voice_Telephone: 843-740-1210 Contact_Electronic_Mail_Address: clearinghouse@noaa.gov Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata Metadata_Standard_Version: FGDC-STD-001-1998 Metadata_Extensions: Online_Linkage: http://www.esri.com/metadata/esriprof80.html Profile_Name: ESRI Metadata Profile