The percent of time that consumer species were present in the experimental area while sea urchin prey remained in the trophic cascade experiments (21 hours in the pencil urchin, TC experiments, 168 hours in the green urchin experiments, respectively).

The percent of time that a consumer occurred in the area was calculated as a percent of the total time that experiment was recorded by time-lapse photography, which was 29,460 seconds in the pencil urchin TC and 247,436 seconds in the green urchin TC experiment. Predator residence times were analyzed for 6 out of 7 total days of the green urchin experiment. “Other triggerfish” represent combined occurrences of Sufflamen verres and Balistes niger. Shark species were pooled in the green urchin TC experiment. Species codes are: (H) = hogfish, (T) = triggerfish, (S) = shark, (R) = ray, (SL) = sea lion.

消费者在该区域出现的时长占比，以延时摄影（time-lapse photography）记录的实验总时长为基准计算；其中铅笔海胆TC实验的总记录时长为29460秒，绿海胆TC实验的总记录时长为247436秒。绿海胆实验共设置7天观测周期，研究者对其中6天的捕食者停留时长进行了分析。“其他扳机鱼（Other triggerfish）”指纹鳞扳机鲀（Sufflamen verres）与黑炮弹鱼（Balistes niger）的出现情况合并统计的结果。在绿海胆TC实验中，所有鲨鱼物种的观测数据均进行了合并处理。物种代码对应规则如下：(H) = 猪齿鱼（hogfish），(T) = 扳机鱼（triggerfish），(S) = 鲨鱼（shark），(R) = 鳐鱼（ray），(SL) = 海狮（sea lion）。