Pruett & Weissburg. Environmental stress gradients regulate the relative importance of predator density- and trait-mediated effects in oyster reef communities Ecology and Evolution Contact: Jessica Pruett, University of Mississippi, jlpruett@olemiss.edu Field experiment metadata (data = field.experiment.data.csv) date = start date of 48-hour blue crab predator effect trial (yyyy-mm-dd) site = location of field trial on Skidaway Island, GA latitude = approxiamate latitude of trial site longitude = approxiamate longitude of trial site tidal.type = tidal type (mean or spring tide) during field trial as defined by average low tide height during trial blue.crab.treatment = blue crab predator treatment (see Methods for description of each treatment) mud.crab.recovered = number of mud crabs recovered in cage at end of 48-hour trial oyster.alive = number of oysters alive at end of 48-hour trial oyster.dead = number of oysters dead at end of 48-hour trial Blue crab effect size metadata (data = blue.crab.effect.size.data.csv) date = start date of 48-hour blue crab predator effect trial (yyyy-mm-dd) site = location of field trial on Skidaway Island, GA latitude = approxiamate latitude of trial site longitude = approxiamate longitude of trial site tidal.type = tidal type (mean or spring tide) during field trial as defined by average low tide height during trial effect.type = blue crab predator effect type (DMIE = density-mediated indirect effect, TMIE = trait-mediated indirect effect, TPIE = total predator indirect effect) effect.size = blue crab predator effect size calculated using ratio-based equations (see Methods for formulas) log.effect.size = the log transformation of blue crab effect size current.speed = estimated average current speed during 48-hour trial based on predictive relationship between tidal range and flow conditions using regression equation derived by Pruett & Weissburg 2018 (cm/s) TKE = estimated average turbulent kinetic energy during 48-hour trial based on predictive relationship between tidal range and flow conditions using regression equation derived by Pruett & Weissburg 2018 (m^2/s^2)