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Ecology The end is near.

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Presentation on theme: "Ecology The end is near."— Presentation transcript:

1 Ecology The end is near

2 What is ecology The scientific study of the interactions between organisms and their environment Basic ecology provides scientific content for evaluating scientific issues

3 Some of the key questions ecologist ask
The central questions of ecology are, Who lives where? How many are there? Humans have always had an interest in the distribution and abundance of other organisms. As hunters and gatherers, prehistoric people had to learn where game and edible plants could be found in greatest abundance.


5 Ok I know what an environment is, but what does it include????
Abiotic factors: (nonliving factors) temperature, light, PH, water, nutrients Biotic factors: (living factors) all the other organisms that are a part of the individuals environment……

6 Ecosystem A collection of all organisms that live in a particular place with their non-living environment. Examples of ecosystems: forest, your backyard you get the idea………

7 Rachel Carson "The 'control of nature' is a phrase conceived in arrogance, born of the Neanderthal age of biology and philosophy, when it was supposed that nature exists for the convenience of man."

8 Sum of all feeding interactions in a given ecosystem.
What are food webs? Sum of all feeding interactions in a given ecosystem.



11 In order to draw a food web?
The arrows go from the energy source to the consumer.


13 What happens to a food web when an organism is removed

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