Energy & Ecosystems
- Created by: beth-marie2511
- Created on: 20-06-16 09:55
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- Energy & Ecosystems
- What is an Ecosystem?
- A balanced biological system consisting of living (biotic) organisms and non-living (abiotic) elements that occur together
- Ecosystems can be on a large scale
- E.G. African grasslands
- Ecosystems can be on a small scale
- E.G. a pond
- What makes up an ecosystem?
- Habitat
- Place where an organism lives
- Population
- A group of organisms of the same species living in the same habitat at the same time (that can breed together)
- Community
- All the populations of different species who live in the same habitat that interact with one another
- Habitat
- Niche
- The role that each species plays within an ecosystem
- It is impossible for two species to occupy the exact same niche within an ecosystem
- Factors that affect ecosystems
- Biotic Factors
- Food supply
- Disease
- Predation
- Abiotic Factors
- pH
- Temperature
- Soil type
- Biotic Factors
- The dynamic nature of ecosystems
- Population sizes rise and fall in most ecosystems, either very slightly or very noticeably.
- Ecosystems change due to the interactions between living organisms and their physical environment
- Any change in one factor can affect the other
- Photo-synthesis is the source of energy for ecosystems
- Matter is constantly recycled within an ecosystem - e.g. nutrient cycles like the nitrogen or carbon cycle
- Energy is not recycled
- It flows through the ecosystem
- What is an Ecosystem?
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