INTRO TO ECOLOGY pp. 359-365.

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INTRO TO ECOLOGY pp. 359-365

Ecology Defined Ecology means "study of homes" study the relationships of animals, plants, and their environment (interdependence) A small change can affect the whole ecosystem

Levels of Organization

Biosphere Earth and its atmosphere that supports life Ecosystem/Biome (kelp forest) The community and its physical aspects (pH, temp) Community (urchins, kelp, otters, sunflower star, etc) all organisms Population (all the sea urchins) members of one species in one place Organism (one sea urchin)

Ecology of Organisms Response to biotic (living) and abiotic (nonliving) factors

conformers vs regulators acclimation: adjust tolerance

dormancy vs migration

Niche/Habitat Limited resources can result in competition

Niche - the job of an organism (usually based on what they eat) 1. Generalist: broad niche 2. Specialist: narrow niche and more at risk from habitat destruction than generalists

Habitat 1. The geographic location Organisms having the same niche or overlapping habitats can result in competition