Secundary SuccesionVersion en ligne The series of changes that occurs in an area where the ecosystem has been disturbed but where the soil and organism still exits. par Andrea Alejandra Quiroa Quintana 1 grasses and wildflowers have taken over this abandoned field Pistas 1 as tree growth continues, the trees begin to crowd out the grasses and wildflowers 2 eventually, a forest of mostly oak, hickory, and some pine dominates the landscape 3 After a few years, pine seedling and others trees replace some of th grasses and wildflowers 4 The first species to grow are _______ such as mosses and lichens 5 shortly a _________ there is no soil only ash and rock 6 As more plants die, they decompose and make the soil more fertile. New plants grow and existing plants mature in the fertile soil