Short Citation:
Office for Coastal Management, 2021: Shallow benthic habitats of San Francisco Bay, California CMECS biotic component, https://www.fisheries.noaa.gov/inport/item/47856.

Item Identification

Title: Shallow benthic habitats of San Francisco Bay, California CMECS biotic component
Short Name: ca_sfb11-Biotic_Metadata
Status: Completed
Publication Date: 2015
Abstract:

This dataset has been developed for the National Oceanic and Atmospheric Administration's (NOAA) Office for Coastal Management (OCM) as a collaborative and cooperative project with the California State Coastal Conservancy (SCC) on behalf of the Ocean Protection Council (OPC) to collect and delineate habitat data in the San Francisco Bay area. Data is intended for use in coastal management decision making, including applications such as sea level rise. The mission of the Center is to support the environmental, social, and economic well-being of the coast by linking people, information, and technology.

Original contact information:

Contact Org: NOAA Office for Coastal Management

Phone: (843)740-1202

Email: coastal.info@noaa.gov

Purpose:

San Francisco Bay is the largest estuary in California and represents a significant resource for the Central California region. This dataset is intended to support the local coastal zone managers in their decision-making processes. This project will assist with the subtidal habitat goals for the long-term management of the bay.

Notes:

10014

Supplemental Information:

The primary project area is the San Francisco Bay area. The total area is estimated to cover approximately 930 sq mi of intertidal and subtidal lands. The area for which habitat delineations was required ranges from the upper limit of the intertidal zone to the point at which an image signature of the bottom is no longer visible due to depth or turbidity. In the San Francisco Bay system this depth is generally approximately -2 meters. A summary report (SF_Bay_Benthic_Mapping_Final_Report.pdf) describes the methods, source data, and process by which Dewberry generated the original benthic cover data set.

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 environment
None algae
None benthic habitat
None CMECS
None Coastal and Marine Ecological Classification Standard
None eelgrass
None marsh
None seagrass
None sediment
None submerged aquatic vegetation

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords Continent > North America > United States Of America > California
None California
None San Francisco
None San Francisco Bay

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
Distribution Liability:

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/GIS and its user community. NOAA in no way represents the interests of ESRI, nor acts as agents for them.

Support Roles

Data Steward

CC ID: 609879
Date Effective From: 2015
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: 609881
Date Effective From: 2015
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: 609882
Date Effective From: 2015
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: 609880
Date Effective From: 2015
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: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 609885
W° Bound: -122.531409
E° Bound: -121.802459
N° Bound: 38.253577
S° Bound: 37.412059

Extent Group 1 / Time Frame 1

CC ID: 609884
Time Frame Type: Range
Start: 2010-08-26
End: 2011-08-23

Spatial Information

Spatial Representation

Representations Used

Vector: Yes

Vector Representation 1

CC ID: 609872
Complex Object Present?: Yes
Complex Object Count: 6409

Access Information

Security Class: Unclassified
Data Access Constraints:

None

Data Use Constraints:

Acknowledgment of Dewberry would be appreciated in products derived from this data.

Distribution Information

Distribution 1

CC ID: 750241
Download URL: ftp://ftp.coast.noaa.gov/pub/benthic/Benthic_Cover_Data/CA_SanFranciscoBay.zip
Distributor:
File Name: Bulk Download
Description:

FTP download of data files.

URLs

URL 1

CC ID: 750243
URL: https://iocm.noaa.gov/cmecs
Name: CMECS Home Page
URL Type:
Online Resource
Description:

Information and resources on the CMECS standard and how to apply it

URL 2

CC ID: 750244
URL: http://www.cmecscatalog.org/
Name: CMECS Catalog
URL Type:
Online Resource
Description:

Searchable online catalog of CMECS units, descriptions, and source references

URL 3

CC ID: 750245
URL: https://coast.noaa.gov/digitalcoast/
Name: NOAA's Office for Coastal Management (OCM) Digital Coast Data section
URL Type:
Online Resource
Description:

The website provides not only coastal data, but also the tools, training, and information needed to make these data truly useful. Content comes from many sources, all of which are vetted by NOAA.

URL 4

CC ID: 750246
URL: https://coast.noaa.gov/data/Images/Collections/BenthicCover_thumbnail.jpg
Name: Browse Graphic
URL Type:
Browse Graphic
File Resource Format: JPEG
Description:

Sample of benthic cover data

Activity Log

Activity Log 1

CC ID: 609904
Activity Date/Time: 2017-03-30
Description:

Date that the source FGDC record was last modified.

Activity Log 2

CC ID: 609903
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: 717627
Activity Date/Time: 2018-02-08
Description:

Partial upload of Positional Accuracy fields only.

Activity Log 4

CC ID: 750242
Activity Date/Time: 2018-04-11
Description:

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

Data Quality

Accuracy:

Attribute accuracy was tested by visual comparison of the aerial photographs to ensure consistency with the classification system and photo signatures. Groundtruthing was also performed to aid in delineation and classification of photo signatures. Due to the long period between when the source imagery was collected (2011) and when the mapping was conducted (2013) a traditional thematic accuracy assessment was not possible. Rather, field information was used to compare features visible in the map with conditions during 2013. A field validation was also conducted by NOAA in November 2014. Between 2013 and 2014 571 points were observed in the field by Dewberry and over 118 by NOAA. A field verification report (Dewberry_Field_Report.pdf) describes the methods for obtaining field observations, information about the landscape, and distributions of points.

Horizontal Positional Accuracy:

The spatial accuracy of the georeferenced imagery is 2 meters or better at the 95% confidence level as computed in accordance with the FGDC National Standard for Spatial Data Accuracy (NSSDA).

Completeness Report:

For this project the minimum mapping unit (MMU) for the Base product shall be 100 square meters (10 meters x 10 meters). The identification and ranking of co-occurring elements was made based on the percent of spatial coverage within the polygon or MMU. The primary project area is the San Francisco Bay area. The total area is estimated to cover approximately 930 sq mi of intertidal and subtidal lands. The area for which habitat delineations was required ranges from the upper limit of the intertidal zone to the point at which an image signature of the bottom is no longer visible due to depth or turbidity. In the San Francisco Bay system this depth is generally approximately -2 meters. The principle source imagery for this project was the ADS-40 multispectral data collected between 2009 and 2011 as part of an earlier California Coastal Conservancy project. This imagery has a 0.3 meter spatial resolution, an 8-bit dynamic range and contains four spectral bands (B, G, R, Nir). The imagery has a spatial accuracy of +/- 2 meters at the CE 90 confidence level. Although tidal levels vary between flight lines, all data was collected within +/- 1 hour of mean low water. The data are available for review and download via the Digital Coast (https://www.coast.noaa.gov/digitalcoast/data/highresortho) .

Conceptual Consistency:

Polygon topology present. All polygons were tested for closure and no dangles, slivers, or superfluous pseudo nodes exist. Every polygon has a label, there are no multiple labels within polygons, there are no contiguous polygons with the same label.

Lineage

Sources

Coastal California Aerial Multi-spectral Imagery

CC ID: 609869
Contact Name: Fugro EarthData, Inc.
Publish Date: 2011-08-26
Extent Type: Range
Extent Start Date/Time: 2010-08-23
Extent End Date/Time: 2011-08-23
Source Contribution:

The aerial imagery acquisition for Coastal California was flown to support the creation of digital ortho-imagery with a 30 cm pixel resolution. Fugro EarthData, Inc. acquired 296 flight lines in 37 lifts from August 26, 2010 through November 29, 2010; and August 23, 2011 (this lift was flown to minimize building lean). The lines were flown at an average of 9,490 feet above mean terrain, using the Leica ADS40-SH52 digital airborne sensor, serial numbers SH024, SH110, and SH022. A subset of the imagery from this larger mission was used to produce the shallow benthic habitat data. Although this imagery was tidally controlled, it was not acquired with consideration of water clarity, sun angle, or sea state which would normally be the case for shallow benthic mapping. However, inspection of the imagery by NOAA, OPC, and Dewberry revealed that in most areas it was suitable for this type of application. | Type of Source Media: None

Process Steps

Process Step 1

CC ID: 609870
Description:

The Biotic feature layer was converted to Coastal and Marine Ecological Classification Standard (CMECS) 2012 format (https://iocm.noaa.gov/cmecs). This was accomplished by extracting the biotic attributes in the original single benthic habitat dataset(shapefile) and exporting them as a feature layer into the larger sfb_ca11.gdb geodatabase. No new delineations were made as part of this process. Polygons in the original shapefile for which no biotic attribute could be assigned were deleted from this feature layer. The full CMECS biotic hierarchy and codes are expressed as attributes for this final product.

Process Date/Time: 2015-01-01 00:00:00

Child Items

Rubric scores updated every 15m

Rubric Score Type Title
Entity (ENT) ca_sfb11-Biotic

Catalog Details

Catalog Item ID: 47856
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