Figure 5
From: Circatrigintan instead of lunar periodicity of larval release in a brooding coral species
Cross-correlation of larval release versus lunar period (red squares) and tidal range (black circles), for each of the eight coral colonies (a–h). Time lag was set at a maximum of ±40 days. Each point in the graph represents the correlation coefficient between the number of planulae at time t and the lunar period (or tidal range) at time t ±n, where n is the time lag in days. Trend lines were composed of sine waves and used to approximate the periodicity of coral colonies that had repeating larval spawning peaks. Coral colonies #3, 4 and 6 did not show periodicity (see Fig. 3), and were therefore left out of the cross-correlation analyses.
