Figure 7
Multivariate regression tree (MRT) and seagrass communities classified for reef waters using species presence/absence data for (a) subtidal sites and (b) intertidal sites. The number (n) below each community is the count of observations that fall into that community. The histogram shows the frequency of occurrence for each species in that community with the height of the bar representing the frequency that each species was observed in that assemblage. The coloured dots represent unique communities for reef intertidal (RI) 1–5, and reef subtidal (RS) 1–3. The CV Error is the cross-validated relative error. (c) The spatial distribution of communities across the Great Barrier Reef World Heritage Area (red border), and (d–f) finer-scale maps of communities at select locations. Map created using ArcGIS software version 10.8 by Esri (www.esri.com). Satellite image copyright Esri.
