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Ecology. The study of interactions among organisms and their environment (including other organisms). Why Study Ecology?. Humans have depended on how well we can observe changes in the environment and predict the responses of organisms. Early Hunters and Gatherers.
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Ecology The study of interactions among organisms and their environment (including other organisms)
Why Study Ecology? • Humans have depended on how well we can observechanges in the environment and predict the responses of organisms
Early Hunters and Gatherers • Had to know where to find food • Had to be familiar with the habits of their prey
Ranchers and Farmers • Have to know how changes in weather and soil conditions will affect their crops and live stock
Current and Future Issues • How are we affecting our environment?
Levels of Organization • Individual = single organism • Population = groups of individuals of same species • Community = All living organisms in a defined area • Ecosystem = All biotic and abiotic factors • Biome = Area defined by a particular climate • Biosphere = Part of earth that life exists