01 Levels of Ecological Organisation

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  • Figure 3.3 Natural capital: breakdown of the earth ’ s 1.4 million known species. Scientists estimate that there are 4 million to 100 million species.
  • Figure 3.2 Natural capital: levels of organization of matter in nature. Ecology focuses on five of these levels.
  • 01 Levels of Ecological Organisation

    1. 1. ECOLOGYLevels of Ecological Organisation ALBIO9700/2006JK
    2. 2. Other animalsKnown species 281,0001,412,000Insects Fungi751,000 69,000 Prokaryotes 4,800 Plants Protists 248,400 57,700 ALBIO9700/2006JK
    3. 3. Universe Galaxies Solar systems Biosphere Planets Earth Biosphere Ecosystems Ecosystems Communities Populations Organisms Realm of ecology Communities Organ systems Organs Tissues Cells Protoplasm Populations Molecules Atoms OrganismsSubatomic Particles ALBIO9700/2006JK
    4. 4. • Ecology – study of how whole communities of living organisms interact with each other and with their environment• Habitat – place where organisms live (e.g. leaf-mining caterpillar inside a leaf on the oak tree)• Population – a group of organisms of the same species, which live in the same place at the same time, and can interbreed with each other (e.g. population of ants/beetles)• Community – all the organisms, of all the different species, living in a habitat (e.g. forest community/reef community)• Ecosystem – relatively self-contained, interacting community of organisms, and the environment in which they live and with which they interact – no ecosystem is entirely self-contained• Niche – the role of an organism in the ecosystem ALBIO9700/2006JK
    5. 5. Habitat ALBIO9700/2006JK
    6. 6. Population ALBIO9700/2006JK
    7. 7. Community ALBIO9700/2006JK
    8. 8. Ecosystem ALBIO9700/2006JK
    9. 9. ALBIO9700/2006JK

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