Collection and experimental setup methods extracted from Doo et al. (2018):
\nColony collection: In January 2017, 48 colonies of Pocillopora verrucosa (Ellis and Solander 1786) were collected randomly on scuba from 5 m depth on the north shore of Mo\u2019orea, French Polynesia (17\u00b0 28'\u00a033\"S, 149\u00b0 49' 20\"W).\u00a0Following 5 d of acclimation, 24 of the corals were selected randomly for removal of all trapeziid crabs and alpheid shrimps\u00a0(\"minus-ectosymbiont\") by probing with a wooden stick (3 mm diameter). Crabs and shrimp were left in the other 24 corals (\"plus-ectosymbiont\"), which were subjected to a procedural control in which they were probed with a wooden stick.
Incubation setup:\u00a0Twelve mesocosm tanks (150 L volume with sand-filtered seawater pumped from 14 m depth in Cooks\u2019 Bay and supplied to the tanks at ~200 mL min\u22121) were used in this experiment, with four colonies per tank in a split-plot design contrasting plus-ectosymbiont (n = 2 colonies/tank) and minus-ectosymbiont (n = 2 colonies/tank) corals.
\nDaily measures of salinity, pH, and total alkalinity (TA):
\nTemperature was recorded with a thermometer (\u00b1 0.05 degrees C; ThermoFisher Traceable) and salinity was measured with a bench-top conductivity meter (\u00b1 0.1 psu, YSI 3100). TA and pH were measured within one hour of sample collection. Seawater collected for TA was filtered (0.45 um; Chanson and Millero, 2007) and analyzed using potentiometric titrations with 0.1-N HCl using an automatic titrator (Mettler Toledo T50) (Dickson et al., 2007). Seawater pH was measured with spectrophotometric methods (Nemzer and Dickson, 2005).
See Doo et al. (2018)\u00a0for a detailed overview of the methodology.
BCO-DMO Processing:
\n- replaced spaces with underscores in parameter names;
\n- reformatted date from mm/dd/yyyy to yyyy-mm-dd;
\n- replaced blanks (missing data) with \"nd\" (no data).