Tampa Bay seagrass past extents

This shapefile is a union of all past seagrass coverage layers that provides an extent of where seagrass has ever been documented in Tampa Bay, Florida. It includes extent estimates from the Southwest Florida Water Management District (SWFWMD) for the years 1988, 1990, 1992, 1994, 1996, 1999, 2001, 2004, 2006, 2008, 2010, 2012, 2014, 2016, 2018, 2020, 2022, and 2024, all of which can be obtained from <https://data-swfwmd.opendata.arcgis.com/>. A 1950s historical extent layer is also included, which can be obtained from the University of South Florida Water Atlas at <https://data-waterinstitute.opendata.arcgis.com/datasets/WaterInstitute::tampa-bay-seagrass-1950>. The map combines estimates of patchy and continuous seagrass as defined by SWFWMD using the Florida Land Use Cover and Classification Codes 9113 and 9116, respectively. No species information is provided, although the most common species in Tampa Bay are Halodule wrightii, Thalassia testudinum, and Syringodium filiforme. The coordinate reference system is NAD83(HARN) / Florida West (ftUS), EPSG: 2882.