. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. Figure 2. Aerial view of the Pelican Cays looking SSE: Fisherman's Cay (left), Manatee Cay (right), and Cat Cay (background). Note the characteristic enclosed and partially enclosed ponds in these islands and the network of shallow ridges in Pond C in Manatee Cay. ( Photo by T. Rath) METHODS The research focused on the well-developed network of ridges in Pond C of Manatee Cay (Fig. 2). A steel probe, in extensions, was used to establish the contact with the underlying rock substrate (Fi
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. Figure 2. Aerial view of the Pelican Cays looking SSE: Fisherman's Cay (left), Manatee Cay (right), and Cat Cay (background). Note the characteristic enclosed and partially enclosed ponds in these islands and the network of shallow ridges in Pond C in Manatee Cay. ( Photo by T. Rath) METHODS The research focused on the well-developed network of ridges in Pond C of Manatee Cay (Fig. 2). A steel probe, in extensions, was used to establish the contact with the underlying rock substrate (Fig. 3). This contact was easy to detect because of the relative ease of penetrating the overlying open branching coral framework consisting predominantly of Acropora cervicornis (Shinn et al., 1979; Westphall, 1986; Aronson and Precht, 1997). In addition, three short cores were collected by pushing a aluminum tube into the crests of reef ridges. Core logs were expanded to correct for compaction that occurred during coring. Radiocarbon dates were determined by standard techniques by Beta Analytic Inc. (Miami. Florida). These dates are reported as radiocarbon years before 1950, conventionally termed "before present" (), using a Libby half-life of 5,568 yrs and a modern standard based on 95% of the activity of the National Bureau of Standards' oxalic acid. No corrections were made for the DeVries effect, reservoir effect, or natural isotopic fractionation. RESULTS Our probing and coring activities were limited to the complex ridge system around the opening to the large central pond in Manatee Cay, Pond C (Fig. 4). One transect of probe sites, including a core site, was established across the coral ridge that runs across the entrance to this. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the orig
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