A Principal Component Analysis of the environmental parameters measured in the experimental tidepools at Second Beach, WA
Supplementary Figure 1. A Principal Component Analysis of the environmental parameters (seawater pH, oxygen, and nutrient concentrations), as well as the ammonium regeneration and removal rates (from Pather et al., 2014) measured in the experimental tidepools at Second Beach (Table S1). The first principal component explained 81.7% of the variance and differed among mussel controls (filled symbols) versus removals (open symbols, p=0.049).
The environmental parameters of experimental tidepools at Second Beach
The environmental parameters of tidepools at Second Beach where mussels were either removed or remained shown as means (se). All values were the maximum measured in each tidepool (see Pather et al., 2014). The Principal Components Analysis based on these environmental parameters is shown in Supplementary Figure 1. The last column represents environmental parameters for seawater surrounding Tatoosh Island (see Wootton and Pfister, 2012) encompassing the period that artificial substrates were deployed and rock and biogenic substrates collected (10 Jun to 6 Aug 2009).