EESC BC 1001x Lecture Notes - Lecture 2: Commensalism, Biomagnification, Carbon Cycle
13 Sep 2016
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Document Summary
Environment where an organism lives, including abiotic and biotic factors. Ecology relationships of living things w/ each other. Ecosystem organisms and their environment working together like a machine. Change is a constant process in nature. Community different species living and interacting in the same environment. Resource availability (food, water, space, light, etc) Conditions of environment (weather, natural disasters, fire) Survival + reproduction rates in a population will not stay constant over time. Life history strategy: an organism"s allocation of energy throughout its lifetime among three competing goals: growing, surviving, and reproducing. K-selected species: species that invest more heavily in fewer offspring, each of which has a better chance of surviving to adulthood (ex. R-selected species: species with a reproductive strategy to produce many offspring, each of whom is, comparatively, less likely to survive to adulthood. (ex. Ecosystems include resident biological community and abiotic component of environment as well as matter and energy fluxes.
