What is an Ecosystem?

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What is an Ecosystem?
An ecosystem is made up of all living and
non-living things in a particular area.
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• This small pond is a great example of an
  ecosystem
• The water, air, sunlight, and mud at the bottom
  of the pond form its PHYSICAL ENVIRONMENTor the
  ABOTIC factors.
• The grass, lily pads, pond grass, and small green
  algae are all forms of plant life in this
  ecosystem BIOTIC
• Insects, snails, and other animals living in the
  pond eat some of these plants to survive
  biotic and abiotic factors

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Frogs in the pond eat insects found there. Of
coursethe frogs, fish and insects leave behind
waste.(yuck)
Fish eat snails, or smaller fish in the pond
Snails, insects, fungi, and bacteria in and
around the pond break down these wastes.
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• Each of the living things in the pond has its own
  HABITAT a special place.
• Moss grows on rocks next to the pond
• Fish swim in the pond
• Frogs jump around the edge of the pond
• Tadpoles use the water plants as protection from
  predators.

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The different living things in the pond ecosystem
live in a balanced relationshipsif left
undisturbed, the pond can continue like this for
hundreds or even thousands of years
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BIOMES OF THE WORLD

• WHAT IS A HABITAT?
• Habitat is the physical place where an organism
  lives and hunts for food.
• Some habitats are very small - like a pill bug
  habitat might be under one fallen log
• but a bees habitat is larger- yes it does
  include the hive...but it also includes the
  fields and forests where the bee searches for
  flowers.

• What is a NICHE?
• An organism's niche is there JOB
• For example 2 birds might live in the same
  location and eat the same food but one might
  hunt during the day and one at night.

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Open your Text to Page 72 and 73

• We are going to read these pages together
• Discuss How are herbivores, carnivores and
  omnivores similar and different?
• All are consumers and they cannot make their make
  their own food. Different Herbivores eat
  producers/plants directly. Carnivores are
  animals that eat other animals and omnivores eat
  both plants and other animals.

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Producers mainly green plants that use the suns
energy to produce food examples trees, fruit,
grass, flowersetc Primary Consumers animals
that eat only PLANTS (herbivores) Secondary
Consumers animals that eat other animals
(carnivores) or both plants and animals
(omnivores) Decomposers organisms such as fungi
and bacteria that break down dead plant and
animal materials into nutrients. Song VIDEO
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What are FOOD CHAINS??

• This is nothing more than a PATH that ENERGY and
  NUTRIENTS follow in an ecosystem
• Energy flows in ONE direction in food chains
• Energy in a food chain starts with the sun
• PRODUCERS are organisms that use the Suns energy
  to make sugar and oxygen
• Producers are the BASE of every food chain
• Producers are eaten by a primary consumer(unless
  you are a plant you are a consumer)
• The food chain continues with herbivoresand
  sometimes carnivores and they end with
  decomposers.
• decomposers

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FOOD CHAINS

• Food chain song
• Food Chain Video Streaming (delicate balance
  between prey and predator)

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What are FOOD WEBS made of?
Food Web is a network of food chains that have
some links in common.
They are just a bunch of food chains linked
together
Video Lion King Speech Discovery Ed Food Web
What is a FOOD WEB?
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Interactive food web
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• WHY DO ORGANISMS COMPETE?
• Limiting Factors within an Ecosystem
• Read pages 84 and 85 together
• Experiment Time AIMS I NEED MY SPACE

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OH DEER

• What are the necessities of survival for animals?
  
• Food
• Water
• Shelter
• Space

• Game Rules
• Count Off By 4sremember your number
• Divide into your numbers
• All of the ones will become the deer
• The other students will become one of the
  necessities

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How do organisms benefit from interactions?

• Living things in an ecosystem depend on one
  anotherthese relationships are examples of
  INTERDEPENDENCE.
• Symbiosis is a relationship between two or more
  kinds of organisms that lasts over time song
• Mutualism this is a relationship that benefits
  both organisms
• Ant and caterpillar relationship
• Sharks Crustaceans
• Ants and acacia tree

• Parasites
• Bedbugs
• Deer Ticks
• Winter Tick Moose
• Body Invaders

Follow up Symbiotic Overview
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• Ecosystem vocabulary
• Environment of an Ecosystemenergy
• CommunitiesRelationshipsNiche
• Food chains, webs and biomes (teachertube video)