Shell mound survey statistics and area.
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No.: number of years surveyed. Length: Average total length of transects from annual surveys. Minimum and maximum depths of the transects across the shell mounds. Note that only some of the shell mounds associated with the platforms were surveyed for fishes, and some areal extent estimates of the shell mounds [34] were not available (na).
创建时间：
2015-12-03
