Comparison of water depth tolerance in two major wetland macrophytes, Phragmites australis and Typha angustifolia

Two major emergent macrophytes, Phragmites australis and Typha angustifolia, show a clear zonation with respect to water depth, i.e., P. occupies shallower than T. angustifolia. However, the reasons for this interspecific difference is unclear. Therefore, study focused on features that enable angustifolia survive at greater depths australis. In both outdoor greenhouse experiments, did not deepest depth showed significantly lower biomass, nitrogen content, photosynthesis in most deep and/or aerated Differences tolerances changes responses root aeration may underlie of two species. As are very common wetlands around world, understanding causal factors determining their distributions, such as differences photosynthetic rate different depths, will be great importance managing or controlling these