Skip to main content
Dryad logo

Distribution and abundance of intertidal sea urchins in South Africa


Ma, Kevin C. K. et al. (2022), Distribution and abundance of intertidal sea urchins in South Africa, Dryad, Dataset,


This dataset contains data described in the paper entitled "Intertidal estimates of sea urchin abundance reveal congruence in spatial structure for a guild of consumers". Data include: (1) counts of intertidal sea urchins (Diadema cf. savignyi, Echinometra mathaei, Parechinus angulosus, Stomopneustes variolaris, and Tripneustes gratilla) made from 164 visits to 116 rocky shore sites across South Africa by six different observers; (2) GPS co-ordinates determined for every 1-km distance interval of the South African coastline starting from the mouth of the Orange River at the border of South Africa and Namibia; and (3) calculations of the amount of upstream and downstream rocky habitat from surveyed sites.

Usage Notes

The readme file provides a description of each column in the dataset. NA =  values not available.


South African Research Chairs Initiative of the Department of Science and Technology and the National Research Foundation, Award: Grant No. 64801