state standard sb4c. relate environmental conditions to successional changes in ecosystems....
TRANSCRIPT
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State Standard
SB4C. Relate environmental conditions to successional changes in ecosystems.
Ecological Succession Notes (3.1)
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Any biotic factor or abiotic factor that restricts the numbers, reproduction, or distribution of organisms is called a limiting factor.
Communities, Biomes, and Ecosystems
Includes sunlight, climate, temperature, water, nutrients, fire, soil chemistry, and space, and other living things
3.1 Community Ecology
Chapter 3
Limiting Factors
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An upper limit and lower limit that define the conditions in which an organism can survive
Communities, Biomes, and Ecosystems
The ability of any organism to survive when subjected to abiotic factors or biotic factors is called tolerance.
3.1 Community Ecology
Chapter 3
Range of Tolerance
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ECOLOGICAL SUCCESSION
Communities, Biomes, and Ecosystems
The change in an ecosystem that happens when one community replaces another as a result of changing abiotic and biotic factors is ecological succession
There are two types of ecological succession—primary succession and secondary succession.
3.1 Community Ecology
Chapter 3
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The establishment of a community in an area of bare rock that does not have any soil is primary succession.
Communities, Biomes, and Ecosystems
3.1 Community Ecology
Chapter 3
ECOLOGICAL SUCCESSION - Primary
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Communities, Biomes, and Ecosystems
The orderly and predictable change that takes place after a community of organisms has been removed but the soil has remained intact is secondary succession.
3.1 Community Ecology
Chapter 3
ECOLOGIAL SUCCESSION - Secondary
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Communities, Biomes, and Ecosystems
A pond is a relatively shallow hole where water collects & light penetrates to the bottom.
If left unattended, a pond will fill in with dirt & debris until it becomes land.
Pond succession can take hundreds of years
3.1 Community Ecology
Chapter 3
ECOLOGIAL SUCCESSION - Ponds
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Communities, Biomes, and Ecosystems
As in all types of succession, pond succession happens in predictable steps:
Chapter 3
ECOLOGIAL SUCCESSION - Ponds
• Bare Bottom (algae/microorganisms)
• Submerged Vegetation
• Emerging Vegetation
• Temporary Pond/Marsh
• Terrestrial Ecosystem
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Chapter 3
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Communities, Biomes, and EcosystemsChapter 3
ECOLOGIAL SUCCESSION - Ponds