Program Info

This project works to better understand the drivers of a seagrass loss event initiating in the Julia Tuttle basin of Biscayne Bay. Benthic habitat monitoring sites across the JFK, Julia Tuttle, Venetian, and Rickenbacker basins consist of 35 sites, however site selection and methodology has changed throughout the project's tenure. Tissue sampling of primary seagrass and green algae species & benthic habitat monitoring data are collected semiannually. Sediment collections were conducted in May and July 2019 for all historic sites. While surveying, water quality measurements are taken via a YSI EXO2 datasonde and secchi disk. This program is paired with the North Biscayne Bay Water Quality Program (5026).
Tissue sampling: SAV species presence, SAV isotopic analysis (%N, %C, %P, d13C, d15N, d34S, C:N, C:P, N:P), SAV sample biomass (g) & epiphyte biomass (g). Benthic monitoring: Braun-Blanquet (cover-abundance scale), percent cover (%), shoot count (#), canopy height (cm), sediment depth (cm). Sediment grain: particle size (mm) as a % volume <2mm, particle size (mm) as a % volume >2mm, organic sediment (% dry weight). Site parameters: depth (ft), current (none, light, mod, strong), visibility (ft), substrate type, sediment depth (cm). Water quality: secchi depth (cm), Chlorophyll (ug/l), Conductivity (µS/cm), Depth (m), nLF Conductivity (µS/cm), ODO (% saturation & % local & mg/L), Pressure (psi a), Salinity (psu), Special Conductivity (µS/cm), TDS (mg/L) Turbidity (FNU), Total Suspended Solids (mg/L), pH (# & mV), Temperature (°C), Vertical Position (m).
Secondary analyses and remediation projects for the basin could better achieve result specific data, especially related to the iron addition project and sedimentary sulfide assessment. Locations are primarily within the Julia Tuttle basin, but also including the JFK and Venetian basins, all within North Biscayne Bay.
Data are used to implement management decisions and work with partners to decrease input of nutrient sources with future restoration implications.
Data are yet to be disseminated, but future plans include presentations and a report.
2 quads are randomly placed in each cardinal direction for a total of 8 replicate quads per site. Braun-Blanquet methodology is used to collect data in each quad.
Data Location
By Request
Data Format
Submerged Aquatic Vegetation Coral/Coral Reef
Recommended Citation

indicates priority attributes

Griffin N Alexander

BBAP Manager

Ellyn Willse

Water Quality Specialist

Leah Leyland

Water Quality Technician

Charles Groppe

Spatial Ecology Coordinator

Sarah Leinbach

Restoration Technician

Export Standardized Data

Habitat(s) : Indicator(s) Last Updated File Download
Submerged Aquatic Vegetation : Percent Cover (by species) 06/22/22 04:45 PM Download File - SAV - 5027.txt
Coral/Coral Reef : Grazers and Reef Dependent Species, Percent Cover Download File - Coral - 5027.txt
DIP Document N/A Download File - DIP

Office of Resilience and Coastal Protection Managed Areas

Biscayne Bay


Submerged Aquatic Vegetation - Percent Cover (by species)
Coral/Coral Reef - Percent Cover
Submerged Aquatic Vegetation - Additional Indicators

Documentation and Data provided by program

File Type File Name Added On Details
Data _MASTER_BBCA_North_Biscayne_Bay_SG_Loss_SEACAR.xlsx 11/06/19 02:06 PM View Details
Data _Tissue_sampling_master_SEACAR_upload.xlsx 11/06/19 02:06 PM View Details
Data BBAP_BenthicsSEACAR_UPD23.xlsx 03/20/23 01:07 PM View Details
Data Benthic_Cover_BBAP_NBB_Seagrass_Loss_vMar20.xlsx 10/30/20 07:35 PM View Details
Data MASTER_BBCA_North_Biscayne_Bay_SG_Loss_SEACAR (1).xlsx 06/12/20 02:45 PM View Details
Data SAV_Tissues_BBAP_NBB_Seagrass_Loss 9.27.22.xlsx 10/03/22 10:28 AM View Details
Data SAV_Tissues_BBAP_NBB_Seagrass_Loss.xlsx 10/30/20 07:35 PM View Details
GIS Benthic_Sites_BBAP_NBB_Seagrass_Loss.kmz 10/30/20 07:35 PM View Details
GIS Benthic_Sites_BBAP_NBB_Seagrass_Loss.xlsx 10/30/20 07:35 PM View Details
GIS 10/30/20 07:35 PM View Details
GIS ID_5027_SiteLocations.xls 05/27/20 07:40 AM View Details
GIS 06/17/19 11:03 AM View Details
Logo DEP_logo_2019.png 04/08/19 01:57 PM View Details
Protocols SOP for BBAP Benthic Monitoring SEACAR.docx 11/06/19 02:06 PM View Details
Protocols SOP for BBAP Tissue Collection SEACAR.docx 11/06/19 02:06 PM View Details