Shellfish Dredging Pushes a Flexible Avian Top Predator out of a Marine Protected Area
Figure 3
Changes in Suitability, Prey Quality, and Gizzard Mass
(A) The percentage of blocks that yielded insufficient intake rates (<4.8 W) increased over time due to an increase in unsuitable blocks being dredged in previous years (dark gray bars; as opposed to light gray bars indicating unsuitable blocks that were never dredged).
(B) Quality of prey included in the diet has declined over time (box-and-whisker plot, line gives GLM ± 95% confidence intervals).
(C) In response, gizzard mass has increased over time (boxes and lines as in (B)).