Convergence Tendencies in Hydrophilic Genus Typha L. in Transformed Reservoirs of European Russia

Abstract

For populations of the genus Typha L., various natural and anthropogenic water pools in the Cenozoic serve as paths of migration, objects of geographic isolation which interfere with the exchange of populations. These processes lead to crosses of closely related populations and the formation of new species on a hybridogenic basis. With the intensification of the anthropogenic factor on water systems within Russia, intersectional hybrids have formed, marking a convergence (destabilization) of Typha. The appearance of hybrids of such rank is favored by the intensive multipurpose exploitation of water bodies of Russia throughout the centuries. Under climate warming in stabilized transformed water ecosystems, populations of Typha adapting to different environments are integrating, passing on to a new evolutionary level.