Download Biology Notes: Ecology

Name: _________________________________________________ Date: _______________ Period: ________ Biology Notes: Ecology Directions: Fill in the blanks as we cover the topic in the PowerPoint. What is Ecology? • Defined: Studying how ____________ __________________ within the __________________________ is called Ecology •
All life interacts ______________________ the biosphere –
Area within the deepest ____________________ trenches to the highest _______________________________________ Populations •
Defined: _______________________ of __________ species living in the ____________________ area •
Population _____________________________based on: –
Births, _____________________, Immigration,_____________________, available _________________________________________ •
List some examples of populations within species: –
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________________________________ Population Patterns •
Populations go through 3 stages: 1) _______________________________ growth •
Population is slowly adapting to particular environment 2) _______________________________ growth •
High birth rates due to abundant resources 3) _____________________ _____________________________ •
Defined: ___________________________ number of _____________________________ that the environment can ________________________________________ •
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Birth & death rates eventually _______________________________ What stage is the human population in? ____________________________________________________ Communities •
Defined: ______________________________ of _____________________species living in the ___________________area at the same ________________________ •
Each organism has its own______________________________ –
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Habitat: ___________________ where an organism ______________________________ Each species has its own ______________________________ –
Niche: The _________________________________________ of a species –
Ex: Termites return nutrients to the soil Ecosystems •
Defined: ___________________________ of species__________________________ with the living & non‐living •
Biotic (_________________) Factors: •
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Animals: _____________________, ____________________, __________________ o
Plants: _____________________, ____________________, __________________ Abiotic (______________________) Factors: o
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Sand, __________________, sunlight, _____________, soil, ____________________, etc… Ecosystem _____________________ affect _______________________________ o
Keystone species __________________ ______________ ecosystems •
Ex: What is a Biome? •
Defined: ____________________ area with distinct _____________________, plant, and animal life •
Climate factors: __________, rain, ___________________________ •
Climate ______________________________ life The biosphere •
Defined: ___________________organisms and the part of the ________________ where______________exists •
Biosphere ___________________ can __________________ life •
Ex: More _____________in the atmosphere… causes _____________________ temps…this can affect many different species Review 1. What is ecology?_________________________________________________________________________________ 2. What are two reasons that populations will increase?__________________________ , ________________________ 3. What are two reasons that populations will decrease?_________________________ , ________________________ 4. What are factors that control population growth called? ________________________________________________ 5. How does a population, community, ecosystem, biome, and biosphere differ? _______________________________ _______________________________________________________________________________________________ 6. What is a keystone species? ________________________________________________________________________ 7. Place the levels of ecology in order from smallest to largest: Ecosystem, Population, Biosphere, Community, Biome __________________ > ____________________ > ___________________ > ________________ > _____________