Regional variation in red sea urchin fishing.

Regional variation in commercial fishing data (CDFW) from the Channel Islands (2009–2011): total effort (number of receipts), total landings (kg), mean price per kg (USD), and total value (USD). (a) seasonal variation summary statistics of monthly (n = 12) data: mean, standard error (SE), and coefficient of variation (CV), and (b) Regional variation among the three western subregions within the Channel Islands (Fig 1) ANOVA results and post hoc Student’s t-test. Levels not connected by the same letter are significantly different.