Open_Data/Flagler_and_St__Johns_counties_2005_2007_Manatee_Distribution_Survey

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Flagler and St. Johns counties 2005-2007 Manatee Distribution Survey Observations (24)

Description: Aerial distribution surveys are used by marine mammal biologists from FWC and other agencies to determine the seasonable distribution of manatees. Most surveys are conducted from small, four-seat, high-winged airplanes (Cessna 172 or 182) flying at a height of 500-1000 ft at a speed of 70-90 knots. Small helicopters may be used instead of fixed wing aircraft in urban areas or where waters are particularly opaque and hovering may be required. Flights are usually 3 to 5 hours long and are most commonly flown every two weeks for two years. The surveys are designed to maximize the manatee counts by concentrating on shallow nearshore waters around the state where manatees and their primary food source, sea grasses, are located. Flight paths curve parallel to the shoreline, and the airplane circles when manatees are spotted until a count of the number of animals in each group is obtained. Offshore waters are not usually surveyed. Dolphin and sea turtle sightings are recorded opportunistically. All aerial data are recorded on paper maps and entered into a GIS shapefile for spatial analysis. Surveys of Flagler and St. Johns Counties were flown twice a month from October 2005 to September 2007. FWC and St. Johns County Habitat Conservation Plan staff members were observers for these flights. The survey area included the Bulow Creek in Volusia County, Atlantic Coast, Intracoastal Waterway of Flagler and St. Johns Counties.

Service Item Id: 403586fdb0de49668296184873dcf5d4

Copyright Text: Flights were flown and data were collected by FWC and St. Johns County Habitat Conservation Plan staff. Data were entered and verified by FWC staff. Use of these data must be credited in any reports or other written publications by the following sentence: "Manatee specific data used in analyses were collected under scientific research permit #MA773494 issued to FWC-FWRI."

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Open_Data/Flagler_and_St__Johns_counties_2005_2007_Manatee_Distribution_Survey_Observations (MapServer)