Extended Data Fig. 1: Results from a three-year sea otter-exclusion experiment testing the effects of otters and shore crabs on salt marsh vegetation.
From: Top-predator recovery abates geomorphic decline of a coastal ecosystem
a–d, Response variables measured are crab burrow density (a), bulk density (ww = wet weight) (b), sediment accretion (dw = dry weight) (c), and crab burrows (d). Crab densities (Extended Data Figs. 1 and 2) were sampled over three years (measured in number of shore crab per 2 m2), the other response variables were sampled in year 2. The bars represent the mean, points are the data, and lines represent the differences in paired blocks (with the exception of d, which compares crab burrows in procedural controls and plots (n = 5) within the same creek, but are not paired). *P < 0.05 for cage treatments using linear mixed models (continuous response data) and generalized linear mixed models (count response data) with assigning paired experimental plots (block) and site (n = 5) as random factors. NS, not significant.
