A reservoir will support varied types of vegetation. The type and density of vegetation depends upon the morphology of the reservoir, the nature of the bottom sediments, plant nutrients and light conditions. New reservoirs undergo succession with subsequent changes in species composition and abundance as they age. The species of aquatic plants endemic to an area are capable of dispersal into a newly formed reservoir. The major factors that determine the establishment of a given species in one area of a reservoir are temperature, light, current, wave action, water depth, soil, and water chemistry. The competitive interactions between various species is also important in determining the development of a dominant species.