Figure F12. Occurrences of silicoflagellates and ebridians, silicoflagellate diversity, and an environmental reconstruction. A. Hole and core numbers and the top and bottom core depths. B. Abundance counts of silicoflagellate per column of microslides at 400× magnification in both coarse (>45 µm) and fine (<45 µm) fractions. C. Changes in silicoflagellate assemblage diversity; the Shannon indices (H: Shannon and Weaver, 1949) were calculated employing the paleontological statistic program PAST (Ryan et al., 1995). D. Estimated trend of seawater temperature changes employing Dictyocha/Corbisema ratios. E. Numbers of ebridian individuals, which may be indicators of biological productivity in relatively shallow marine waters (less than several hundred meters).
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