UNI101Y1 : Ch16 Competition1.pdf
16 Feb 2013
School
Department
Course
Professor
Document Summary
Bio120h lisa zhao 2011 | page 1 chapter 16: competition y d u t s h c r a e s e r. Closely related plant species living in the same region often grow in diff. habitats or on diff. types of soil. Ecological segregation resulted from competition for resources, Aagg ttaannsslleeyy (ecological segregation resulted from competition) leading to the exclusion of one species. Sylvestre lives on alkaline soils of limestone hills and pastures. Planted them singly and together w/ the 2 diff. soils. Planted alone grew and maintained itself on both soils (but bedstraws (genus most vigorous on natural soil type) Together on calcareous (limestone) soils sylvestre overgrew and shaded saxatile. Together on acidic, peaty soils saxatile overgrew. Thus, species are restricted to the most favourable soil when competing species are present, but can broadly be distributed over other soils in the absence of competition.
