Correlating radioisotope dating methods Flirten in amsterdam
Modern sample collection is done twice a year, in February and July, to determine any seasonal variation.These cores record the current ecology of the Bay and also serve as a barometer for variation within the ecosystem.These data imply that seagrass is more abundant in Florida Bay after 1900 than in the past, although additional cores dating back to at least the 1800s would be necessary to substantiate these conclusions.
The cores studied included Bob Allen 6A (158cm), Russell Bank 19B (142cm), Pass Key 37, (74cm) and Taylor Creek T24 (86cm).
After 1940, faunal indicators show a peak in euhaline conditions around 1958, followed by a decline throughout the 1970s and a subsequent rise in the 1980s.
In particular, Bob Allen 6A exhibits this increase in salinity.
These organisms indicate the salinity and substrate types present when the animal was alive.
Dinoflagellate cyst analysis indicates the nutrient supply and current while pollen grains reveal the terrestrial vegetation present.