Shanks et al. Ecol Mono

Data are a combination of field-collected data on barnacle populations at stations from San Diego, California to La Push, Washington. Stations names are in column A and they were cataloged (column B) as either rocky shores (1, continuous rocks intertidal for at least 50 m) or rocks within beaches (2, rocky shore <50 m). The latitude and longitude (columns D and E) are precise locations using the ‘place’ tool in Google Earth. Columns F and G are alongshore wind stress (a proxy for upwelling/downwelling) and average wave height calculated for each station latitude. See Shanks et al (in press) for descriptions of the methods. Daily solar radiation (column H) is from the National Solar Radiation Data Base (http://rredc.nrel.gov/solar/old_data/nsrdb/). Average surfzone width (Column I) was determined from Google Earth images (See Shanks et al, in press for methods). Intertidal width and beach angle (columns J and K) were measured in the field at the time the stations were sampled and methods are described in Shanks et al. (in press). Barnacle data (columns L-W) are from photographs taken in the field at each sample site. ImageJ was used to analyze the photographs and methods are describe in Shanks et al. (in press).