Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally...
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Transcript of Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally...
![Page 1: Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally imposed changes or stress resistance, persistence, or.](https://reader036.fdocuments.in/reader036/viewer/2022062718/56649eb25503460f94bb9357/html5/thumbnails/1.jpg)
Ecosystem: Stability and Change
![Page 2: Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally imposed changes or stress resistance, persistence, or.](https://reader036.fdocuments.in/reader036/viewer/2022062718/56649eb25503460f94bb9357/html5/thumbnails/2.jpg)
Stability
Is the ability to withstand or recover from externally imposed changes or stress
• resistance, persistence, or inertia• Resilience• Constancy-maintain certain size
– Applies to organisms, populations, communities ecosystems, and the ecosphere
– Provided that these external stresses are not too severe
![Page 3: Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally imposed changes or stress resistance, persistence, or.](https://reader036.fdocuments.in/reader036/viewer/2022062718/56649eb25503460f94bb9357/html5/thumbnails/3.jpg)
Factors Contributing to Ecosystem Stability
• Food Web Complexity• Homeostatis- internal systems counteracting
external stress.• Continuous Dynamic Change
Movement of Matter and EnergyReplacement of OrganismsEcological Succession- the natural replacement of one
community in particular area with a different, and usually more complex community, over a period of time
![Page 4: Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally imposed changes or stress resistance, persistence, or.](https://reader036.fdocuments.in/reader036/viewer/2022062718/56649eb25503460f94bb9357/html5/thumbnails/4.jpg)
Primary Succession
![Page 5: Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally imposed changes or stress resistance, persistence, or.](https://reader036.fdocuments.in/reader036/viewer/2022062718/56649eb25503460f94bb9357/html5/thumbnails/5.jpg)
Secondary Succession
![Page 6: Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally imposed changes or stress resistance, persistence, or.](https://reader036.fdocuments.in/reader036/viewer/2022062718/56649eb25503460f94bb9357/html5/thumbnails/6.jpg)
Secondary Succession
![Page 7: Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally imposed changes or stress resistance, persistence, or.](https://reader036.fdocuments.in/reader036/viewer/2022062718/56649eb25503460f94bb9357/html5/thumbnails/7.jpg)
![Page 8: Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally imposed changes or stress resistance, persistence, or.](https://reader036.fdocuments.in/reader036/viewer/2022062718/56649eb25503460f94bb9357/html5/thumbnails/8.jpg)
![Page 9: Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally imposed changes or stress resistance, persistence, or.](https://reader036.fdocuments.in/reader036/viewer/2022062718/56649eb25503460f94bb9357/html5/thumbnails/9.jpg)
Tolerance Range/Limits
Minimum and maximum limits for physical conditions (such as temperature) and concentration of chemical substances beyond which no members of a particular species can survive.
![Page 10: Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally imposed changes or stress resistance, persistence, or.](https://reader036.fdocuments.in/reader036/viewer/2022062718/56649eb25503460f94bb9357/html5/thumbnails/10.jpg)
![Page 11: Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally imposed changes or stress resistance, persistence, or.](https://reader036.fdocuments.in/reader036/viewer/2022062718/56649eb25503460f94bb9357/html5/thumbnails/11.jpg)
Limiting Factor Principles
Too much or too little and any abiotic factor can limit or prevent growth of a population of a species in an ecosystem, even if all the other factors are at or near the optimal range of tolerance for the species
![Page 12: Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally imposed changes or stress resistance, persistence, or.](https://reader036.fdocuments.in/reader036/viewer/2022062718/56649eb25503460f94bb9357/html5/thumbnails/12.jpg)
Law of Tolerance
The existence, abundance, and distribution of a species in an ecosystem are determined by whether the levels of one or more physical and chemical factors fall with the range tolerate by the species.
![Page 13: Ecosystem: Stability and Change. Stability Is the ability to withstand or recover from externally imposed changes or stress resistance, persistence, or.](https://reader036.fdocuments.in/reader036/viewer/2022062718/56649eb25503460f94bb9357/html5/thumbnails/13.jpg)