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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

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

Write everything that isUnderlined

slide2

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

slide3
Overview of Terms
    • Ecology is the study of the interactions among living things, and between living things and their surroundings.
slide4

Organism

Organism

  • An organism is an individual living thing(such as an alligator)
slide5

Population

Population

Organism

Organism

  • A population is a group of the same species that lives in one area.
slide6

Community

Community

Population

Population

Organism

Organism

  • A community is a group of different species that live together in one area.
slide7

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)
slide8

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.
research methods ecological research methods include observation experimentation and modeling
Research MethodsEcological research methods include observation, experimentation, and modeling.
  • Observation is the act of carefully watching something over time.
slide10
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.
slide11
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.

slide13
Elements in an Ecosystem
  • Biotic factors are living things.
  • Remember, BIO means LIFE! (like Biology)
    • plants
    • animals
    • fungi
    • bacteria
slide14
Abiotic factors are nonliving things.
  • Remember, “A” means NOT (like Asymmetrical means not symmetrical)
  • sunlight
  • temperature
  • wind
  • Moisture
    • Water, rain, clouds
  • soil
slide15

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

slide16

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.
chapter 13 1 13 2 review questions
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?