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Fig. 5. Regolith chloride (µg g–1 based on oven dry soil weight) for quarterly samples taken in the extreme drought of 2001–2002, and the following wet year of 2002–2003. An arrow indicates the region of the regolith (on average) that is weathered bedrock (WBR) at each site. (a) Data from the healthy coastal sage scrub site at Lake Skinner (+CSS). Note the dynamic distribution over time of chloride throughout the regolith depth. (b) Data from the degraded coastal sage scrub site at the base of the Box Springs Mountains (–CSS). Note the L-shape to the curves indicating the strong stratification of soil chloride within the top 25 cm of the regolith, which overlies the static distributions over time of soil chloride beneath the 50-cm depth.
