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etals, Polycyclic Aromatic Hydrocarbons (PAHs),
Polychlorinated Biphenyls (PCBs)
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Sediments and
oyster tissue in Rookery Bay and surrounding managed estuaries show
evidence of elevated concentrations of copper, cadmium, lead, zinc,
arsenic, mercury and chromium. At least six studies have been conducted
between 1973 and the present, with varying levels between bays and
over time. Information on PAHs and PCBs in the Reserve and its watershed
come primarily from tow sources: The NOAA Status and Trend program
and the Collier County Environmental Services Division (CCESD). Although
extremely high levels of PAHs have been found in adjacent watersheds
in Collier county (Grabe 1996), the Reserve and its watershed are
not currently considered to contain significant levels of these contaminants
(CCESD 1993, Cantillo et al. 1997). |
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