BSC 385 Lecture Notes - Lecture 36: Edge Effects, Sloss Debate, Landform

• School: University of Alabama
• Department: Biological Sciences
• Course: BSC 385
• Professor: Jonathan Benstead

Document Summary

Species that occur in small populations are more vulnerable than abundant species (cid:1) Widespread and abundant (core species) are less prone to extinction than those that are rare and found in only a few sites (satellite species) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) (cid:1) Which population is going to be most at risk of extinction: limited range, large species, limited range, small species, wide range, large species, wide range, small species. Early-successional and disturbance-tolerant species are usually less threatened (cid:1) Management strategies designed to improve conditions for climax species may threaten rare species that depend on disturbance (cid:1) (cid:1) (cid:1) (cid:1) Species diversity increases population, trophic, and biogeochemical stability (cid:1) (cid:1) Ecosystem services- the monetary value of crucial services that healthy, functional ecosystems provide (cid:1) (cid:1) (cid:1) Ethical responsibility to the natural world and the species around us. Keystone species- species that have a disproportionately large impact on the community in which they occur.