Mangrove diversity

The location of current mangrove forest, together with contours representing gradients of mangrove species richness. Note that graphic presentation at this scale enormously exaggerates actual forest area.
Source: reproduced with modification, from Spalding.
Spalding, M.D. 1998. Biodiversity patterns in coral reefs and mangrove forests: global and local scales. Unpublished PhD thesis, University of Cambridge.