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Section 13-1 & 13-2 “Introducing Ecology ”

Section 13-1 & 13-2 “Introducing Ecology ”. Write everything that is Underlined. Section 13.1 KEY CONCEPT : Ecology is the study of the relationships among organisms and their environment. Overview of Terms

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Section 13-1 & 13-2 “Introducing Ecology ”

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  1. Section 13-1 & 13-2“Introducing Ecology” Write everything that isUnderlined

  2. Section 13.1 KEY CONCEPT:Ecology is the study of the relationships among organisms and their environment.

  3. Overview of Terms • Ecology is the study of the interactions among living things, and between living things and their surroundings.

  4. Organism Organism • An organism is an individual living thing(such as an alligator)

  5. Population Population Organism Organism • A population is a group of the same species that lives in one area.

  6. Community Community Population Population Organism Organism • A community is a group of different species that live together in one area.

  7. Ecosystem Ecosystem Community Community Population Population Organism Organism • An ecosystem includes all of the organisms as well as the other nonliving things in a given area.(such as climate, soil, water, rocks)

  8. Biome Ecosystem Ecosystem Community Community Population Population Organism Organism • A biome is a major regional or global community of organismscharacterized by the climate conditions and plant communities that thrive there.

  9. Research MethodsEcological research methods include observation, experimentation, and modeling. • Observation is the act of carefully watching something over time.

  10. Experiments are performed in the lab or in the field. • Lab experiments give researchers more control but are not reflective of the complex interactions in nature. • Field experiments give a more accurate picture of natural interactions.

  11. Computer and mathematical models can be used to describe and model nature. • Modeling allows scientists to learn about organisms or ecosystems in ways that would not be possible in a natural or lab setting. Ecologists use data transmitted by GPS receivers worn by elephants to develop computer models of the animal’s movements.

  12. Section 13.2 KEY CONCEPT: Every ecosystem includes both living and nonliving factors.

  13. Elements in an Ecosystem • Biotic factors are living things. • Remember, BIO means LIFE! (like Biology) • plants • animals • fungi • bacteria

  14. Abiotic factors are nonliving things. • Remember, “A” means NOT (like Asymmetrical means not symmetrical) • sunlight • temperature • wind • Moisture • Water, rain, clouds • soil

  15. Keystone • Changing one factor in an ecosystem can affect many other factors. • A keystone species is a species that has an unusually large effect on its ecosystem. If you moved this stone the whole arch would fall down

  16. creation of wetland ecosystem increased waterfowl Population keystone species increased fish population nesting sites for birds • Keystone species form and maintain a complex web of life.

  17. Chapter 13-1 & 13-2 Review questions • What is Ecology? • Define organism, population, community, biome, biotic, and abiotic factors. • Give two examples of biotic and abiotic factors. • What is a keystone species? • What does every ecosystem include?

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