Pioneer plant species are usually characterized by
î î î. -(often referred to as Pioneer species) are usually characterized by high growth rates, smaller size, high degree of dispersal, and high rates of per capita population growth.- Plant species characterized by high dispersal rates, ability to colonize disturbed sites, short life span, and shade intolerance.onoclimax hypothesis. A theory of plant succession and community dynamics. The community is viewed as a highly integrated super organism and the process of succession represents the gradual and progressive development of the community to the ultimate or climax stage.