B4 - Ecology in the local environment
- Created by: Naomi
- Created on: 20-01-13 11:45
View mindmap
- Ecology in the local environment
- A COMMUNITY is made up of all the organisms living there
- Zonation is the gradual change in species distribution across a habitat
- The distribution of species can be mapped using a transect line and displayed as a kite diagram
- Changes in abiotic (non biological) factors cause zonation
- A POPULATION is the number of a particular organism in a community
- The distribution of species can be mapped using a transect line and displayed as a kite diagram
- A POPULATION is the number of a particular organism in a community
- A COMMUNITY is made up of all the organisms living there
- Capture-recapture data can be used to calculate a population size estimate
- Capture-recapture data assumes:
- Identicle sampling methods
- No deaths, immigration, emigration
- Survival rates not affected by marking organisms
- Bigger quadrat and more samples makes it a more accurate estimate
- Capture-recapture data assumes:
- Capture-recapture data can be used to calculate a population size estimate
- Capture-recapture data assumes:
- Identicle sampling methods
- No deaths, immigration, emigration
- Survival rates not affected by marking organisms
- Bigger quadrat and more samples makes it a more accurate estimate
- Capture-recapture data assumes:
- Where an organism lives is called its HABITAT
- Native ecosystems have a wider biodiversity than artificial ecosystems
- Food chains and food webs show that plants and animals are interdependant, withs energy being transferred from one organism to another
- Photosynthesis and respiration ensure an overall balance of gases
- An ecosystem is self supporting in all factors apart from having to have the sun as an energy source
Comments
No comments have yet been made