Populations and ecosystems
- Created by: oliviasimmons99
- Created on: 15-06-17 10:48
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- Populations & Ecosystems
- Ecosystems
- More or less self-contained functional unit in ecology made up of all the interacting biotic and abiotic factors in a specific area
- Two major processes: the flow of energy through the system, the cycling of elements within the system
- Within an ecosystem, there are number of species
- Each species is made up of many groups of individuals that together make up a population
- Populations
- A group of the same species that occupy the same habitat at the same time
- Populations of different species form a community
- Community
- The organisms of all species that live in the same area
- Habitat
- The place where an organism normally lives, which is characterisedby physical conditions and the species of other organisms present
- Within each habitat, there are smaller units, each with their own microclimate,called microhabitats
- Ecological niche
- All conditions and resources required for an organism to survive, reproduce and maintain a viable population
- Includes all biotic (living) and abiotic (non-living) conditions
- No two species occupy the same niche
- Ecology
- The study of the inter-relationships between organisms and their environment
- Ecosystems
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