BIOL 3170 Lecture Notes - Lecture 14: Picea Sitchensis, Pinus Echinata, Climax Species
Document Summary
Early succession species (aka pioneer species: species which tend to be the first species to establish in an area, characteristics, fast growing, small, short-lived, strong dispersal, rapid population growth potential, often r-selected species. Late succession species (aka climax species: pe(cid:272)ies whi(cid:272)h tend to esta(cid:271)lish in an area that"s already esta(cid:271)lished with other spe(cid:272)ies. Characteristics: slow-growing, large, long-lived, poor dispersal, slow population growth potential, strong competitors, often k-selected species. Primary succession = establishment of species on land that has not been previously inhabited: on a new surface/substrate with no seed bank or propagules, must receive seeds or other propagules from dispersion onto the site. Secondary succession = establishment of species on land that has previously been inhabited: e. g. on an old soil with an existing seed bank and/or other propagules, both dispersal and regeneration from seed bank important. Successional sequence: can use known successional sequences to estimate age of areas, e. g.
