EE BIOL 100 Lecture Notes - Lecture 8: Insular Biogeography, Keystone Species, Landscape Connectivity
Document Summary
Must consider dominant herbivore, mycorrhizal associations, fire, natural succession do not use cows b/c they pull up roots restoration of existing species: eliminate invasive, reintroduce native, reintroduce natural disturbances (fires) Prevents grassland from turning into later successional habitats restoration of community from scratch: fire. Only native species have adapted to fire: annually remove annual plants by mowing before they grow seeds, bring back bison/dominant herbivore species (+ remove cows) More species richness due to colonization less species richness due to replacement allogenic change. Must understand and allow disturbance and succession to conserve a natural state habitat fragmentation. May be connected by corridors -> more movement between two patches boundaries vs core: boundaries = transition zones. But human created boundaries lower diversity (i. e. fence) Boundaries/edges/buffer zones i. e. tide pools/intertide areas, mountainsides, wetlands. Sometimes species may only survive in these transition zones. Human created boundaries -> void of species/biodiversity.