Current Status of Oyster Reefs in Florida Waters: Knowledge and Gaps Dr. William S. Arnold Florida FWC Fish and Wildlife Research Lab 100 Eighth Avenue SE St. Petersburg, FL 33701 727-896-8626
[email protected] Outline • History-statewide distribution • Present distribution – Mapped populations and gaps – Methodological variation • Ecological status • Application Need to Know Ecological value of oyster reefs will be clearly defined in subsequent talks Within “my backyard”, at least some idea of need to protect and preserve, as exemplified by the many reef restoration projects However, statewide understanding of status and trends is poorly developed Culturally important- archaeological evidence suggests centuries of usage Long History of Commercial Exploitation US Landings (Lbs of Meats x 1000) 80000 70000 60000 50000 40000 30000 20000 10000 0 1950 1960 1970 1980 1990 2000 Statewide: Economically important: over $2.8 million in landings value for Florida fishery in 2003 Most of that value is from Franklin County (Apalachicola Bay), where 3000 landings have been 2500 2000 relatively stable since 1985 1500 1000 In other areas of state, 500 0 oysters landings are on 3000 decline due to loss of 2500 Franklin County 2000 access, degraded water 1500 quality, and loss of oyster 1000 populations 500 0 3000 Panhandle other 2500 2000 1500 1000 Pounds500 of Meats (x 1000) 0 3000 Peninsular West Coast 2500 2000 1500 1000 500 0 Peninsular East Coast 1985 1986 1987 1988 1989 1990 1991 1992 1993 Year 1994 1995 1996 1997 1998 1999 2000 MAPPING Tampa Bay Oyster Maps More reef coverage than anticipated, but many of the reefs are moderately to severely degraded Kathleen O’Keife will discuss Tampa Bay oyster mapping methods in the next talk Caloosahatchee River and Estero Bay Aerial imagery used to map reefs, verified by ground-truthing Southeast Florida oyster maps • Used RTK-GPS equipment to map in both the horizontal and the vertical.