11:375:101 Lecture Notes - Lecture 10: Keystone Species, Ecological Niche, Population Ecology
30 Jan 2019
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Pop quiz : give an example of a keystone species. Keystone species are very important across multiple species. Top predator such as sea otter: name two components of a species" ecological niche. Food / what they are eating/ where they get energy from. Where they live: space: characterize the following as specialist or generalist: Population is a group of interbreeding individuals of the same species. Population size is governed by births, deaths, immigration, emigration. Population change = (birth + immigration)- (deaths + emigration) Population growth is exponential; j curve; at a fixed percentage per year. More offspring than are dying, then the population is increasing. Environmental resistance = factors that limit growth rate. Carrying capacity is the max population of a given species that a particular habitat can sustain indefinitely. Every habitat ecosystem the planet as a whole has a certain capacity to carry a population size. Bc you eventually run out of something.
