ENVS195 Lecture Notes - Lecture 6: Exponential Growth, Overexploitation, Invasive Species
2 Jan 2017
School
Department
Course
Professor
Document Summary
Average temperature and water are the two most important abiotic components. The result of all the interactions between abiotic and biotic factors throughout evolution. Decrease in biodiversity when moving away from the equator. 5 key driving forces of biodiversity loss: terrestrial habitat loss and fragmentation, invasive species, excessive nitrogen and other forms of pollution, over-exploitation of species on land and sea, climate change impacts on biodiversity. Primary colonizers: the community of group of organism establishing first in the area. Seral stages: the various developmental stages of an ecosystem. Primary succession the first organisms to colonize bare rock, has no soil present, takes longer. Secondary succession recovery from a smaller disturbance, semi-living to living, has soil present, faster. Organisms found in an area outside their normal range. Species that are transported to a new environment and are able to rapidly multiply, out- compete native species, and change native habitats.
