Program Info

Website
https://www.swfwmd.state.fl.us/
Region(s)
NW
Summary
A study of oyster habitat extent and quality as well as barnacle species ranges within the Chassahowitzka, Homosassa and lower Withlacoochee Rivers was conducted to support Southwest Florida Water Management District minimum flows and levels and investigate their effects on sessile macroinvertebrate communities.
Parameters
Oyster shell height (mm), density (#/0.25 m^2), acreage (m^2), percent live (%)
Notes
Application
Publications
Technical report
Start
2018
End
2018
Frequency
One-time
Method
Up to 50 oyster bars were mapped in each river system and the mapped areas were divided into three sub-areas for sampling and three to five haphazardly placed 0.25m^2 quadrats were evaluated per sub-area. Density was calculated as the count of all oyster specimens within the quadrat area with both valves attached. Percent live was estimated by opening a minimum of 25 specimens to distinguish live individuals from dead individuals. The percent live calculation was used to estimate the size of the oyster sample needed to obtain a minimum live specimen sample size of 25 during laboratory processing. Each laboratory sample was processed to separate individual oysters and associated fauna. Up to 25 live oysters were measured (shell height in mm) with calipers. Whole wet weights, shell wet weights and tissue dry weights were also measured in order to calculate a condition index.
Discontinuity
none
Data Location
Southwest Florida Water Management District
Data Format
.xlsx
Habitats
Oyster/Oyster Reef
SEACAR Citation
Southwest Florida Water Management District (SWFWMD) . (2018). Assessment of Oysters and Barnacles Along the Chassahowitzka, Homosassa, and Lower Withlacoochee River Systems. Updated 09/17/2020. Distributed by: SEACAR Data Discovery Interface, Office of Resilience and Coastal Protection, Florida Department of Environmental Protection. https://data.florida-seacar.org/programs/details/5074
Alternative Citation

indicates priority attributes

Contacts
Gabe Herrick, PhD

Lead Environmental Scientist

Gabe.Herrick@watermatters.org

352-796-7211, x4275

Export Standardized Data

Habitat(s) : Indicator(s) Last Updated File Download
Oyster/Oyster Reef : Density, Percent Live, Size Class 07/08/24 02:34 PM Download File - Oyster - 5074.zip
DIP Document N/A Download File - DIP

Office of Resilience and Coastal Protection Managed Areas

St. Martins Marsh, Nature Coast

Indicators

Indicator
Oyster/Oyster Reef - Density
Oyster/Oyster Reef - Acreage
Oyster/Oyster Reef - Percent Live
Oyster/Oyster Reef - Size Class

Documentation and Data provided by program

File Type File Name Added On Details
Data Data_ID_5074.zip 05/06/20 08:55 PM View Details
GIS DR_Corrected_2.zip 05/11/20 12:00 AM View Details
Logo swfwmd-web.gif 05/11/20 12:00 AM View Details
Protocols Oyster Barnacles Final.pdf 05/06/20 08:55 PM View Details