. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. not included in the measurements, nor were other organisms. A line transect was made on the crest because the water was too shallow to allow a photo transect. The line transect was made in front of Anthony's Key (86°35'W, 16°2 0'N; Fig.'s 4B, 5). The moveable grid used for belt-quadrats on Cayman Brae consisted of a 1 x 1 m frame of PVC tubing divided into 16 equal squares by 6 lines. The grid was placed on the reef, and the coverage of each coral species estimated. Estimates of large corals were made in squar
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. not included in the measurements, nor were other organisms. A line transect was made on the crest because the water was too shallow to allow a photo transect. The line transect was made in front of Anthony's Key (86°35'W, 16°2 0'N; Fig.'s 4B, 5). The moveable grid used for belt-quadrats on Cayman Brae consisted of a 1 x 1 m frame of PVC tubing divided into 16 equal squares by 6 lines. The grid was placed on the reef, and the coverage of each coral species estimated. Estimates of large corals were made in squares, and small corals in cm . After coral cover estimation, the frame was moved to the adjacent area, in a straight line along the depth contour. Belt-quadrats were made in each of 6 visually identifiable zones which are listed along with the depth and location in Table 3. Reef locations were named and marked with buoys as in Roatan. Two belt-quadrats were made in the terrace reef zone, one on top of the buttresses, and one on the sides of buttresses. These belt-quadrats were made perpendicular to shore because of an observed gradient in coral composition along the length of the top of each buttress, and because the buttress tops were quite narrow. Species-area curves began to level out in 15-20 frames (Fig. 3) , requiring the combination of the two belt-quadrats at each depth. Vertical extensions of colonies and hidden sections of corals were not included in the measurements. 25m. T- 10 20 30 Quadrats Figure 3. Species-area curves for Cayman 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 original Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural History (U. S. ); United States. Bureau of Sport Fisheries and Wil
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