Zoo121 lecture 6

Zoo121 lecture 6 - Ecosystem dynamics and change Quiz, (5...

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Ecosystem dynamics and change
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Quiz, (5 questions total) 1. The major terrestrial communities of the Earth, often classified according to their dominant plant associations, are called a) terrains b) biotic zones c) guilds d) habitats e) Biomes 2. What kind of organism starts every food chain? f) autotroph
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Quiz (page 2) 3. A biome's vegetation type is largely the result of a) climate b) soil type c) habitat d) biotic factors e) none of the above 4. Of the following organisms, the one not considered an autotroph is f) oak tree g) dandelion
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Quiz (page 3) 5. What word describes a species with a broad niche 6. Describe a disadvantage of being a specialist
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Random Fact of the Day ± Bogs have such acidic water that dead plants and animals don’t decompose ± In many parts of Northern Europe, human bodies have been found in bogs ± Most of these bodies show evidence of being violently murdered or executed ± The skin becomes tanned like leather This bog body, found in Denmark died 2,400 years ago
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Ecosystems Change over time ± Nature is not static ± Sometimes, it seems like people forget that. ± Preserving natural areas “as they were” ± But, there is no way to keep it the same! ± In reality, ecosystems maintain stability and seem to be similar averaged over time.
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Ecosystem dynamics Development Change Equilibrium
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Normal Changes ± Seasons ± Weather ± Life cycles of animals and plants
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Disturbance and Change in Ecological Communities ± Community composition
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Zoo121 lecture 6 - Ecosystem dynamics and change Quiz, (5...

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