Figure 3.

Chronological and stratigraphic records in the mean (black points) and the 95th percentile log-length (white points) of Corbula gibba and the corresponding likelihood models for temporal changes in the 95th percentile log-length. The punctuational shift in shell size in the chronological record either translates to stratigraphic punctuation at sites with relatively high sedimentation and reduced bioturbation (at Po and Isonzo) or to strongly muted stratigraphic records at sites with very slow sedimentation (at Piran and Brijuni). The chronological record is based on dated shells partitioned into 5 year cohorts at Po (a). The stratigraphic records are based on 5–10 cm thick increments at five sites (b). The 1.5 m long cores capturing the last approximately 150 years (Po 3 and Po 4) are shown separately and together with the 26 m long core S10, which extends the record to the onset of the Holocene transgression (the last 10 kyr). Thin vertical dashed lines demarcate the shell length at 10 mm. Error bars refer to 95% bootstrapped confidence intervals. Time averaging (TA) refers to the inter-quartile age range (IQR) in years.