Program Info

Website
https://loxahatcheeriver.org/river/seagrass/
Region(s)
NE
Summary
Loxahatchee River District’s Wildpine Ecological Laboratory staff monitored seagrass every-other-month (bi-monthly) at four sites located within the Loxahatchee River Estuary and at a reference site in the southern Indian River Lagoon. Monitoring was conducted to characterize spatial and temporal variation in seagrass percent cover and canopy height within the Loxahatchee River estuary.
Parameters
Percent cover, Shoot counts/density, and canopy height (average blade length, cm), and biomass. Water quality/clarity measured at each site: Temperature, SpCond., Salinity, DO(%sat), DO(mg/l), pH, Secchi, Turbidity, Chl a, PAR, Light. Methods 2003-2007 used transects with 25x25cm quadrats; post-2007 uses randomized 1m2 quadrat)
Notes
Documents on agency website include reports and results of analyses. Updated data typically available by late October.
Application
Publications
Start
2003
End
Current
Frequency
Bimonthly
Method
Monitoring percent occurrence/cover (total and by species), shoot counts/density, canopy height, biomass. 2003-2007: randomized transects with 25x25cm quadrats. Percent occurrence calculated by dividing the number of 25cm X 25cm quadrats (on the transect) with species presence by the total number of quadrats on the transect. Shoot count and canopy height measurements performed at fixed locations along each transect. 2007-current: haphazardly placed 1x1m quadrats within five pre-selected SAV beds. Percent cover is estimated as percent presence/absence using a 25 grid-cell 1m x 1m quadrat (2007-2020) or a 100 grid-cell 1m x 1m quadrat (2021-present). Shoot density and canopy height calculated as average within the quadrat (i.e., average blade length in cm). Analysis by agency determined that the percent occurrence data was the same for the 2003-2007 (transect based) sampling and the 2007-present sampling (CERP patch-scale randomized design).
Discontinuity
Data Location
https://loxahatcheeriver.org/river/seagrass/ - Seagrass Data: 2003-present
Data Format
Excel spreadsheet
Habitats
Submerged Aquatic Vegetation
SEACAR Citation
Loxahatchee River District; Wildpine Ecological Laboratory. (2023). Loxahatchee River District Bi-Monthly Seagrass Monitoring. Updated 04/16/2024. Distributed by: SEACAR Data Discovery Interface, Office of Resilience and Coastal Protection, Florida Department of Environmental Protection. https://data.florida-seacar.org/programs/details/3017
Alternative Citation

indicates priority attributes

Contacts
Jerry Metz

Loxahatchee River District · Wildpine Laboratory Technician/Researcher

Jerry.Metz@lrecd.org

Export Standardized Data

Habitat(s) : Indicator(s) Last Updated File Download
Submerged Aquatic Vegetation : Percent Cover 03/29/24 02:23 PM Download File - SAV - 3017.txt
DIP Document N/A Download File - DIP

Office of Resilience and Coastal Protection Managed Areas

Jensen Beach to Jupiter Inlet, Loxahatchee River-Lake Worth Creek

Indicators

Indicator
Submerged Aquatic Vegetation - Percent Cover

Documentation and Data provided by program

File Type File Name Added On Details
Data 2007-2017-Seagrass-Data.xlsx 08/17/18 11:44 AM View Details
Data Copy of LRD-Bimonthly-Seagrass-Data-2022.xlsx 01/19/23 02:45 PM View Details
Data LRD-Bimonthly-Seagrass-Data-2021.xlsx 01/14/22 04:21 PM View Details
Data Seagrass Database thru 2023.xlsx 02/26/24 11:57 AM View Details
Data SG_Bimonthly_Data (Raw) end-26jun2020.xlsx 08/13/20 06:39 AM View Details
Data SG_Bimonthly_Data_through_Oct2020.xlsx 01/26/21 01:02 PM View Details
GIS SGSites.zip 08/17/18 11:44 AM View Details
Protocols DSG-2009-2010.pdf 08/17/18 11:44 AM View Details
Protocols Program_3017_SeagrassSamplingDataDictionary.xlsx 08/13/20 06:39 AM View Details