Short Citation:
Office for Coastal Management, 2021: Coastal Bend Texas Benthic Habitat Mapping Patchy Shapefile Map - San Antonio Bay and Espiritu Santo Bay, https://www.fisheries.noaa.gov/inport/item/47962.

Item Identification

Title: Coastal Bend Texas Benthic Habitat Mapping Patchy Shapefile Map - San Antonio Bay and Espiritu Santo Bay
Short Name: tx_coastal_bend_phaseIIb_patchy_srv_p-meta
Status: Completed
Publication Date: 2009-02-13
Abstract:

The NOAA Office for Coastal Management (OCM) requested the creation of benthic habitat data along the southern Texas coast to support the Texas Seagrass Monitoring Program.The benthic habitat map was created from 1m UltraCam digital airborne imagery collected in November 2007. The imagery was processed into 4-band DOQQs. The benthic habitat map was created from resampled 2m mosaicked orthos. Habitat classification was performed through segmentation of the imagery using Definiens Professional and habitat labeling through Classification and Regression Tree (CART) Analysis. The minimum mapping unit is100m2. This map covers San Antonio and Espiritu Santo Bays which is approximately 370mi2.

Original contact information:

Contact Name: Becky Jordan

Contact Org: Fugro EarthData, Inc.

Title: Project Manager

Phone: 301-948-8550

Email: bjordan@earthdata.com

Purpose:

The NOAA OCM worked cooperatively with the Texas Parks and Wildlife Department (TPWD) and the Texas A and M University, Corpus Christi, Center for Coastal Studies to have benthic habitat data, primarily submerged aquatic vegetation, created for eight bay systems along the southern Texas coast. This project, the phase 2 project,consists of the two remaining bay systems, Lower Laguna Madre and San Antonio/Espiritu Santo Bays. This benthic habitat data will support the recently adopted Texas Seagrass Monitoring Program which calls for the monitoring of seagrass beds along the Texas coast for assessment of status and trends.

Notes:

10118

Supplemental Information:

The geographic extent of the project area is ~370mi2. Benthic habitat data was generated from 2007 UltraCam imagery for all estuarine lands except for the marine side of the barrier beaches.

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Benthic
Global Change Master Directory (GCMD) Science Keywords Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Coastal
Global Change Master Directory (GCMD) Science Keywords Earth Science > Biosphere > Ecosystems > Marine Ecosystems > Estuary
ISO 19115 Topic Category imageryBaseMapsEarthCover
None Benthic habitat
None Environmental Monitoring
None Habitat classification
None Seagrass
None Submerged aquatic vegetation
None Texas Seagrass Monitoring Program

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States Of America > Texas
None Gulf of Mexico
None Texas
None TX
None US

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Maintenance Frequency: As Needed
Data Presentation Form: Map (digital)
Entity Attribute Overview:

None

Entity Attribute Detail Citation:

Not applicable

Distribution Liability:

Users must assume responsibility to determine the usability of these data.

Data Set Credit: NOAA Office for Coastal Management

Support Roles

Data Steward

CC ID: 614539
Date Effective From: 2009-02-13
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Distributor

CC ID: 614541
Date Effective From: 2009-02-13
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Metadata Contact

CC ID: 614542
Date Effective From: 2009-02-13
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Point of Contact

CC ID: 614540
Date Effective From: 2009-02-13
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Extents

Currentness Reference: Publication Date

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 614545
W° Bound: -96.807954
E° Bound: -96.336526
N° Bound: 28.456812
S° Bound: 28.189011

Extent Group 1 / Time Frame 1

CC ID: 614544
Time Frame Type: Discrete
Start: 2009-02-13

Access Information

Security Class: Unclassified
Data Access Constraints:

None

Data Use Constraints:

None

Distribution Information

Distribution 1

CC ID: 750780
Download URL: ftp://ftp.coast.noaa.gov/pub/benthic/Benthic_Cover_Data/TX_CoastalBend_phaseIIb_patchy_srv_p.zip
Distributor:
File Name: Bulk Download
Description:

FTP download of data files.

Activity Log

Activity Log 1

CC ID: 614562
Activity Date/Time: 2017-03-30
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 614561
Activity Date/Time: 2017-11-14
Description:

Converted from FGDC Content Standard for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details.

Activity Log 3

CC ID: 750781
Activity Date/Time: 2018-04-11
Description:

Partial upload to move data access FTP links to Distribution Info and remove broken URLs.

Technical Environment

Description:

Windows NT/2000 Systems, Definiens Professional,See5, ArcGIS, Erdas Imagine

Data Quality

Accuracy:

Horizontal accuracy of the reprocessed source imagery was verified to exceed the project specification of +/- 5meters CE95 of position on the ground.Overall habitat map final thematic map deterministic accuracy is 90% and overall fuzzy accuracy is 91%, which exceeds the contract standard of 85%. Additionally, 13 of the 14 final individual class producer's and user's deterministic accuracies exceed the contract standard of80%. The deterministic user's accuracy for emergent marsh is 76%. All of the individual class producer's and user's fuzzy accuracies exceed the contract standard of80%. Detailed error matrices can be found in the thematic accuracy report.

Completeness Report:

Compliance with the accuracy standard for the imagery was ensured by the placement of photo-identifiable ground control check points.Compliance with the accuracy standard for the final map product was ensured by field checks and manual editing.

Conceptual Consistency:

Eight photo-identified ground control check points were established for the purpose of assessing the accuracy of the final orthoimagery. These points were randomly distributed over the San Antonio Espiritu Santo Bay area.Two of the control points fell outside the project extent,and one additional point was discarded, as it was not associated with a well-defined feature. The five remaining points were used to calculate the accuracy of the orthoimagery.For the final map product Initial Map accuracy assessment was used as a tool to prioritize areas for further field examination and after field investigation to prioritize those areas where additional modeling or interpretation was needed. Error matrices showing both deterministic and fuzzy accuracies were compiled for the initial map. Based on the results compiled from the assessment, the team visit any classes exhibiting inaccuracy and addressed the classes through modeling, additional analysis or manual editing.

Lineage

Sources

San Antonio Espiritu Santo Bay Digital Orthoimagery

CC ID: 614534
Contact Name: Sanborn Map Company, Inc.
Publish Date: 2008-03-10
Extent Type: Discrete
Extent Start Date/Time: 2008-03-10
Source Contribution:

The orthoimagery was produced by Sanborn Map Company, Inc. for NOAA. The imagery for the San Antonio Espiritu Santo Bay project was acquired on December 5,2007 and the orthoimagery and horizontal analysis was completed on January 28, 2007. | Source Geospatial Form: map | Type of Source Media: Digital

Process Steps

Process Step 1

CC ID: 614535
Description:

The original 1m DOQQs for the project area were resampled to 2m and mosaicked into a single four-band image. Image segmentation was performed using Definiens Professional. The classification of the habitat segments(as ESRI polygon shapefiles) was performed using CART analysis. The habitat map was refined with the aid of field data collected during May and July of 2008. The final habitat shapefile clipped to the final project area boundary. Each polygon has a unique polygon identification number in the attribute table (field"POLY_ID"). The final shapefile was checked for proper topology and to insure that each polygon has a correct habitat label, habitat code, modifier label if present, unique identification number, and an area calculation. Polygons below the 100m2 minimum mapping unit (MMU) were eliminated, though some polygons less than 100m2 were retained if their area changed to below the MMU due to the polygon boundary smoothing process. The habitat data also went through a independent validation review.Polygons in the habitat map labeled as Patchy SRV(seagrass) were used to mask the 2m mosaic for further classification of these areas. Pixels in the imagery falling within the Patchy SRV polygons were classified into a"percent seagrass" cover category using NDVI values.Pixels were classified into the following seagrass coverage categories:0% greater than 0-10% greater than 10-20% greater than 20-30% greater than 30-40% greater than 40-50% greater than 50-60% greater than 60-70% greater than 70-80% greater than 80-90% greater than 90%For each Patchy SRV polygon from the habitat map, the average percent seagrass coverage and standard deviation was calculated based on the coverage values of each pixel within the polygon. These data were included in the Patchy SRV shapefile attribute table.

Process Date/Time: 2009-02-10 00:00:00

Catalog Details

Catalog Item ID: 47962
Metadata Record Created By: Anne Ball
Metadata Record Created: 2017-11-14 12:57+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2019-07-02 15:17+0000
Metadata Record Published: 2018-04-11
Owner Org: OCM
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Next Review Date: 2019-04-12