Website

https://loxahatcheeriver.org/river/seagrass/

Region(s)

NE

Summary

The project quantified seagrass occurrence and density using in situ observations based on a random design that locates sampling points throughout the Loxahatchee River estuary. At each sampling point, a 9m2 collapsible quadrat was used to collect seagrass presence/absence within each 1m2 square of the 9m2 grid. Results from this project provide landscape-scale, species specific assessment of seagrasses in the estuary.

Parameters

seagrass presence, 2010 data includes Water depth (cm), predominant substrate type (much, sand, rock/shell, detritus), muck depth if present, Density (m2), acreage.

Notes

Data after 10/21/2007 is excluded from SEACAR because Program 3017 has quadrat level detailed data for Loxahatchee seagrass starting after this date.

Application

Publications

Start

2007

End

Current

Frequency

Periodic

Method

Landscape-scale Mapping Methods: performed while snorkeling. Quantifed seagrass presence or absence by deploying a 9m2 quadrat at each sample point. 2010 data includes water depth and seagrass density: visually estimated in cells where seagrass was present, using the following categories: (1) low density (< 5% coverage); (2) moderate density (> 5% but < 90% coverage); and (3) high density (= 90% coverage)

Discontinuity

Data Location

https://loxahatcheeriver.org/river/seagrass/

Data Format

Shapefiles and raster data, excel

Habitats

Submerged Aquatic Vegetation Water Column

Recommended Citation

Loxahatchee River District; Wildpine Ecological Laboratory. (2019). Loxahatchee River District Landscape-Scale Seagrass Mapping Area. Updated 11/02/2020. Distributed by: SEACAR Data Discovery Interface, Office of Resilience and Coastal Protection, Florida Department of Environmental Protection. https://dev.seacar.waterinstitute.usf.edu/programs/details/10001.

indicates priority attributes