Fig. 2
From: Split spawning realigns coral reproduction with optimal environmental windows
Autumn spawning dates and lunar cycles in relation to the optimal environmental window. Mass spawning events are shown with pink bars and split spawning events are shown with blue bars. a, b The empirically observed autumn spawning realignment cycles that occurred due to split spawning in 2010 (a) and 2013 (b), maintaining spawning in the environmental window (warm water temperatures and low wind speeds). Water temperatures and wind speeds for Scott Reef are the mean monthly values obtained from the Hadley Centre Sea Surface Temperature data set from 1990 to 2000 and the NOAA Earth Systems Research Laboratory from 1968 to 1996 respectively. c The hypothetical shift in the spawning date, out of the optimal environmental window, if spawning occurred every 12 lunar months without realignment. For example, if spawning occurred on the 30th of March in 2008 (far right pink bar) and then successively every 12 lunar months, then the spawning date would shift earlier by ~10 days each year (grey arrows), occurring on the 24th of January in 2014
