AP Biology 2004-2005 AP Biology Lab Review. AP Biology 2004-2005 Lab 1: Diffusion & Osmosis.
Factors that Impact Ecosystems AP Biology Unit 1.
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Transcript of Factors that Impact Ecosystems AP Biology Unit 1.
![Page 1: Factors that Impact Ecosystems AP Biology Unit 1.](https://reader035.fdocuments.us/reader035/viewer/2022062804/56649db25503460f94aa1f0e/html5/thumbnails/1.jpg)
Factors that Impact Factors that Impact EcosystemsEcosystems
AP Biology
Unit 1
![Page 2: Factors that Impact Ecosystems AP Biology Unit 1.](https://reader035.fdocuments.us/reader035/viewer/2022062804/56649db25503460f94aa1f0e/html5/thumbnails/2.jpg)
Abiotic vs. Biotic Factors
• Abiotic factors = non-living components that affect living organisms – Ex. Temperature, sunlight, rocks
• Biotic Factors = all living things or their materials that directly or indirectly affect organisms in its environment (includes interactions)
![Page 3: Factors that Impact Ecosystems AP Biology Unit 1.](https://reader035.fdocuments.us/reader035/viewer/2022062804/56649db25503460f94aa1f0e/html5/thumbnails/3.jpg)
Affect of Biotic and Abiotic Factors• Interactions with biotic and abiotic factors
can have an effect on several different levels: cellular, organismal, population, ecosystem
• Cellular Level: ex. temperature, water availability can affect a cell’s function.
• Organismal level: ex. interactions (such as mutualism, predation) as well as abiotic factors (water, temperature)
![Page 4: Factors that Impact Ecosystems AP Biology Unit 1.](https://reader035.fdocuments.us/reader035/viewer/2022062804/56649db25503460f94aa1f0e/html5/thumbnails/4.jpg)
Affect of Biotic and Abiotic Factors
• Population, Ecosystem, Community Level: – ex. Water availability, availability of nesting
materials and sites, species diversity, can all contribute to the stability of these groups.
![Page 5: Factors that Impact Ecosystems AP Biology Unit 1.](https://reader035.fdocuments.us/reader035/viewer/2022062804/56649db25503460f94aa1f0e/html5/thumbnails/5.jpg)
Biomes• Ecosystem types that are classified
according to the dominant vegetation
• Locations are closely tied to abiotic factors such as temperature and rainfall
• Ex. Desert, tropical rain forest, tundra
![Page 6: Factors that Impact Ecosystems AP Biology Unit 1.](https://reader035.fdocuments.us/reader035/viewer/2022062804/56649db25503460f94aa1f0e/html5/thumbnails/6.jpg)
Geological & Meteorological Events
• Impact ecosystem distribution
• Biogeographical studies – Studies that determine the distribution of
species
• Ex. Continental drift – Marsupials fill ecological roles in Australia
similar to those filled by placental mammals on other continent
![Page 7: Factors that Impact Ecosystems AP Biology Unit 1.](https://reader035.fdocuments.us/reader035/viewer/2022062804/56649db25503460f94aa1f0e/html5/thumbnails/7.jpg)
Species-specific events• Keystone species =
have a strong influence on other species in the ecosystem
• Loss of keystone species can result in drastic changes to or the collapse of the ecosystem.
![Page 8: Factors that Impact Ecosystems AP Biology Unit 1.](https://reader035.fdocuments.us/reader035/viewer/2022062804/56649db25503460f94aa1f0e/html5/thumbnails/8.jpg)
Human Activities • Occurs on a local,
regional, and global scale
• Speeds up changes to ecosystems locally and globally
• Ex. Urbanization, global climate change, introduced species