Growth rate of Peyssonnelid Algal Crusts was measured using terracotta settlement tiles at five sites across Lameshur Bay, St. John, USVI. Unglazed terracotta tiles (15 × 15 × 1 cm) originally were deployed to measure coral recruitment, and photographs of the tiles were re-purposed to provide an additional measure of the planar growth of PAC. Years for which photographs of settlement tiles were available to be analyzed for growth rate include 2009, 2011-2012, and 2014-2019.
Replicate: Replicate number (1 to 566) is the unique identificaton for each individual terracotta settlement tile photograph analyzed.
Site: The five sites where tiles were deployed within Lameshur Bay, St. John, USVI (Cabritte Horn, Tektite, West Little Lameshur Bay, White Point, Yawzi Point)
Year: The years in which a set of photographs of settlement tiles were available to be analyzed for growth rate (2009, 2011, 2012, 2014, 2015, 2016, 2017, 2018, 2019).
Growth Rate: Growth rate of Peyssonnelid Algal Crusts in centimeters per year (cm^2/year). The area of PAC was calculated using Fiji Software on settlement tile photographs. Because settlement tiles were deployed for one year, growth rate per year was calculated.
Related datasets for Edmunds and Williams (2021) Coral Reefs publication:
Figure 2a, https://www.bco-dmo.org/dataset/836071
Figure 2b, https://www.bco-dmo.org/dataset/836097
Tables 1 and 2, https://www.bco-dmo.org/dataset/836304
Williams, M. K., Edmunds, P. J. (2021) Growth rate of Peyssonnelid Algal Crusts on terracotta settlement tiles at five sites across Lameshur Bay, St. John, USVI from 2009 onward. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2021-01-13 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.836164.1 [access date]
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