Program Info

Website
Region(s)
SE
Summary
SAV
Parameters
Acreage, % Cover (Braun-Blanquet), % Algae cover, species composition, algae species composition, epiphytes, temperature, salinity, water clarity, substrate type
Notes
"Important Differences between the 2007 and 2013 Mapping Projects: As described in the Introduction, the objective of the 2013 LWL Seagrass Mapping Project was to update the 2007 seagrass map. However, the methods for map creation between the 2007 and 2013 surveys are very different. The 2013 ground-truthing survey was limited to locations where seagrass was delineated in 2007 and may have excluded areas of seagrass expansion since 2007. Additionally, seagrass bed edge expansion or recession from the original groundtruthing locations was limited to the 30-m distance of the survey transect, and only two habitat classifications (continuous seagrass and patchy seagrass) were subject to ground-truthing during the 2013 mapping project. Therefore, it is important to recognize that the 2013 acreages presented in this report must be interpreted as ground-truthing verification of the 2007 map and not an exhaustive coverage of seagrass cover. When comparing acreages between the 2007 and 2013 maps, it is also important to recognize that unvegetated bottom (FLUCCS code 5400) was classified as seagrass cover of less than 10% in 2007. In 2013, unvegetated softbottom is used to describe softbottom habitat in the central segment where seagrass was not observed in 2013 and where mean water depth was deeper than -5.3 ft. NAVD 88. The 2013 ground-truthing map represents a substantially higher level of accuracy in the description of seagrass cover/presence within polygons as a result of the extensive ground-truthing which detected the presence of a single shoot within a 30 sq. m sampling area. The “zone of seagrass occurrence” in the 2013 seagrass map is defined as the presence of seagrass within a polygon with a mean BB cover score of 0.01 to 0.5; these areas would have been mapped as unvegetated bottom in 2007." (LakeWorthSeagrassMappingSurveyReport.pdf, p. 12) "...it is important to recognize that the 2013 acreages presented in this report must be interpreted as ground-truthing verification of the 2007 map and not a comprehensive map of seagrass distribution and areal extent in the LWL." (LakeWorthSeagrassMappingSurveyReport.pdf, p. 2). Sample Date for map is set to July 1, 2013 for SEACAR data load because that is the date of the last ground truth.
Application
Publications
Start
2000
End
2013
Frequency
Periodic
Method
Aerial imagery interpretation and ground truthing using Braun-Blanquet assessments using 1m x 1m quadrats. Five ground-truthing transects established in 2000, four more added in 2001 and monitored annually. Aerial imagery assessed in 2001 and 2007 and extensive ground-truthing conducted in 2013 to adjust 2007 SAV classifications and boundaries.
Discontinuity
Data Location
Palm Beach County Department of Environmental Resources Management
Data Format
Geodatabase
Habitats
Submerged Aquatic Vegetation Water Column
SEACAR Citation
Palm Beach County Department of Environmental Resources Management. (2013). Lake Worth Lagoon Seagrass Mapping Project. Updated 04/22/2022. Distributed by: SEACAR Data Discovery Interface, Office of Resilience and Coastal Protection, Florida Department of Environmental Protection. https://data.florida-seacar.org/programs/details/3016
Alternative Citation

indicates priority attributes

Contacts
Eric Anderson

EAnderson1@pbcgov.org

Jennifer Baez

Environmental Program Supervisor

JBaez1@pbcgov.org

(561) 233-2424

Export Standardized Data

Habitat(s) : Indicator(s) Last Updated File Download
Submerged Aquatic Vegetation : Percent Cover 07/08/24 01:35 PM Download File - SAV - 3016.zip
Submerged Aquatic Vegetation : Acreage 07/08/24 01:34 PM Download File - SAV Acreage - 3016.zip
Water Column : Water Quality, Water Clarity 07/11/24 01:58 PM Download File - Discrete WQ - 3016.zip
DIP Document N/A Download File - DIP

Office of Resilience and Coastal Protection Managed Areas

Jensen Beach to Jupiter Inlet

Indicators

Indicator
Submerged Aquatic Vegetation - Percent Cover
Submerged Aquatic Vegetation - Acreage
Water Column - Water Quality
Submerged Aquatic Vegetation - Additional Indicators

Documentation and Data provided by program

File Type File Name Added On Details
GIS 2013_ALLGTSITES.ZIP 01/25/19 10:49 AM View Details
GIS LWL_ALL_Polygon.zip 01/25/19 10:49 AM View Details
Protocols LakeWorthSeagrassMappingSurveyReport.pdf 09/21/18 02:09 PM View Details
Protocols LWL 2013 GT Final Report.pdf 01/25/19 10:49 AM View Details
QA 2013 GroundTruth Map AllSegments_070314.pdf 01/25/19 10:49 AM View Details