[ENVS 2330] - Midterm Exam Guide - Everything you need to know! (17 pages long)

• School: University of Guelph
• Department: Environmental Sciences
• Course: ENVS 2330
• Professor: Neil Rooney

Document Summary

Envs big journals on ecosystem science/ biodiversity: "nature" and "science" Intermediate disturbance hypothesis = the most biodiversity should occur where there is "intermediate" levels of hypothesis (if there is no disturbance and everything stays exactly the same then one species will dominate thus has very little biodiversity. If there is too much disturbance nothing can survive. ) * when too much nutrients are present there is no limiting factor controlling any species thus the "best" strategy is to reproduce as much as possible and overpower all other species. Algae blooms occur and there is very little biodiversity as this one species dominates * Habitat complexity (niches) taxonomic differences temporal (geologic evolution, extinction, speciation, vs recent) Mass extinctions generally take out macro fauna (large species not bacteria, phytoplankton etc) Speciation is generally higher than extinction however now the extinction rate is up to 1000x higher than the "normal" in the fossil record.