Figure 65 - Systematic Mapping of Bedrock and Habitats along the Florida Reef Tract - Central Key Largo to Halfmoon Shoal (Gulf of Mexico)

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Coastal & Marine Geology Program > Center for Coastal & Watershed Studies > Professional Paper 1751

Figure 65. (A) Summary of petrologic data averaged by sample year for upper, middle, and lower Keys (from Lidz and Hallock, 2000). Note data sources. (B) Conceptual nutrient-effect model predicts effects of nutrification (increasing nutrients) on skeletal sedimentary components in a reef ecosystem (adapted from Hallock, 1988, and Hallock et al., 1988). Shaded area represents present conditions in the Florida Keys. Short arrows show postulated shifts in upper and middle Keys bioerosional components (i.e., a decline in live algae-bearing corals and larger algae-bearing foraminifera with a commensurate increase in grains of calcareous algae, molluscs, and corals) between 1963 and 1989.

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(A) Summary of petrologic data averaged by sample year for upper, middle, and lower Keys. (B) Conceptual nutrient-effect model predicts effects of nutrification (increasing nutrients) on skeletal sedimentary components in a reef ecosystem (adapted from Hallock, 1988, and Hallock <abbr title=

et al., 1988)." height="327" width="861" border="0">

Coastal & Marine Geology Program > Center for Coastal & Watershed Studies > Professional Paper 1751

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