Data from: A connectivity threshold between grass patches amplifies coastal dune formation

By analyzing a decade of morphological development in an establishing coastal dune system, we discovered that dune height is primarily driven by the initial density of neighboring patches, rather than individual patch size.

We identified an S-shaped relationship consistent with a spatial percolation threshold: increasing local patch density triggers an abrupt shift from isolated sand-trapping patches to functionally connected clusters that enhance dune growth. Data: This dataset includes the patch polygons derived from orthorectified aerial imagery (locations and geometries) and a Source Data file containing the data underlying all main-text figures (e.g., including patch elevation over time).