Ecosystems: Everything Is Connected

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Ecosystems Everything Is Connected
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In nature, things that we would never think were
connected can be linked to each other
?
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Everything is Interconnected We learned the
hard way

• DDT use in Borneo

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An ecosystem is all of the organisms living in an
area together with their physical environment

• An rainforest and a coral reef are examples of
  ecosystems

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Ecosystems dont have clear boundaries

• Things move from one ecosystem to another. Birds
  migrate from Michigan to Mexico

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In order to survive, ecosystems need five basic
components

• Energy
• Mineral nutrients
• Water
• Oxygen
• Other living things

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An ecosystem is made up of both living and
nonliving things
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Biotic factors are the living and once living
parts of an ecosystem.

• Biotic factors include dead organisms, dead parts
  of an organism, and the organisms waste products

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Abiotic factors are the nonliving things in an
ecosystem

• Abiotic factors include air, water, rocks, sand,
  light and temperature

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Scientists organize living things into various
levels.
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An organism is an individual living thing
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A species is a group of organisms that are
closely related and can mate to produce fertile
offspring

• All black widow spiders belong to the same
  species (Latrodectus mactans)

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Members of a species may not all live in the same
place.

• Field mice in Florida wont interact with field
  mice in Maine.

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Populations are members of the species that live
in the same place at the same time

• Members of a population will interact with one
  another.

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An organism doesnt live alone and neither does a
population

• Every population is part of a community a group
  of various species that live in the same place
  and interact with each other

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All organisms live in particular places

• The place an organism lives is called a habitat

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Every habitat has specific characteristics that
the organisms that live there need to survive

• If any of the factors change, the habitat changes

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Organisms tend to be very well-suited their
natural habitats

• Living things cant survive long away from their
  natural habitats

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An individual organisms way of life is called
its niche.

• Organisms may share a habitat, but they do not
  share a niche.

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The community in an area along with the abiotic
factors make up the ecosystem or biome
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All the biomes on Earth make up the biosphere.

• The biosphere is about 16km (10 miles) thick and
  is the layer of life surrounding the Earth.