NRE 3105 Lecture 8: 8 Mangroves
26 Jan 2019
School
Department
Course
Professor
Document Summary
An association of halophytic trees, shrubs, and other plants growing in brackish to saline tidal water in tropical and subtropical coastlines. Cowardin classification: e2fo & ss (estuarine intertidal forested & shrub/scrub), haline. Extent: tropical and subtropical 25 n & s, there are 68 s pecies in the world. In us, they are in the atlantic and gulf coasts of florida. Geomorphology and hydrology: need protection from wave action bays, estuaries, lagoons, lee of peninsula, islands, tidal range 0. 5m to 3 meters, tides are important for: nutrient import, aerate soil, stabilize salinity in the soil. Wide range of salinity depending on geomorphic position and season, low oxygen when flooded. 39-59: often highly reduced soils with low redox potential, when drained for agriculture, reduced sulfides oxidize into sulfuric acid, making the soil toxic! Adaptations: mangroves are facultative halophytes , they can grow in salt environments, but do not require it.
