To test their theory of island biogeography, Daniel Simberloff and E.O. Wilson observed these ecosystems. The foundation species of these ecosystems are either of the genus Avicennia or the genus Rhizophora. Oxygen gas exchange in these ecosystems occurs in upward-growing pneumatophores. The Ganges river delta hosts the world’s largest type of this ecosystem, called the Sundarbans. (10[2])The large (10[1])roots of organisms in these ecosystems (-5[1])support shrimp and red crab fisheries, and also help prevent erosion and storm (10[1])surge along coastlines. (-5[1])For 10 points, name this coastal ecosystem composed of forests of namesake salt-tolerant (10[1])trees. ■END■ (0[1])