Ecosystem Structure. What is an ecosystem? Do you remember?
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Transcript of Ecosystem Structure. What is an ecosystem? Do you remember?
Ecosystem Structure
What is an ecosystem?
Do you remember?
Ecosystem
A. unit that includes all the interacting parts of an environment in an area
a. Abiotic
(Nonliving)
b. Biotic
(Living)
Biotic or Abiotic?
Bacteria
Biotic
Bacteria
Biotic or Abiotic?
The Sun
Abiotic
The Sun
Biotic or Abiotic?
Leather Seats
Biotic
Leather Seats
Biotic or Abiotic?
Dead Dog
Biotic
Dead Dog
Biotic or Abiotic?
Temperature
Abiotic
Temperature
Biotic or Abiotic?
Tire
Biotic
Tire
Ecosystem
Structure
Sun’s energy>photosynthesis>glucose
A. Energy flows when organisms eat
B. Autotroph = make their own food from chemicals and light
C. Heterotroph = must obtain food; can’t make it
Mini - Structure
D. Niche= way of life; physical space and role; “profession”
E. Habitat = place where organisms live; “address”
Who’s Niche is this
Gathering acorns?
Who’s habitat is this?
Trophic Levels
(feeding levels)
A. Producers = autotrophs that make their own food
B. Consumers = heterotrophs that eat other plants and animals
C. Decomposers = break down dead tissue and waste
a. Herbivore = eat plants
b. Omnivore = eat flesh and plants
c. Carnivore = eat flesh
d. Scavenger = feed on organisms that recently died
Consumers
First level consumers feed on producers (Herbivores)The zebra eats the grass
Second level consumers eat the first level consumers (Carnivores)
The lion eats the zebra*Omnivores can be first level or second level
consumersTertiary consumers eat the second level consumers
The vulture eats the lion
Which of these are producers?
Which of these are first level consumers?
What is another name for first level consumers?
Herbivore
Which of these are second level consumers?
What is another name for a second level
consumer?
Carnivore
Food Chain = specific order in which organisms obtain energy in an ecosystem
Food Web = complex interconnected food chains
Food chain
Food Web
Make a food chain
DaisyEagle
Grasshopper
Frog
Coyote
Answer:
---> ---> ----> ---->
Notice the direction of the arrows. This shows the flow of energy
Food Web
Make a food web
Bear
Ladybug
Fungi
Mountain Goat
Oak Tree
Barn owl
Sparrow
Deer
Fox
GrassSpider
In a marine ecosystem, disease killed most of the sea otters. This allowed the sea urchins and clams to increase in number. As a result, the sea gull population increased and the seaweed population decreased. Identify a secondary consumer in this marine ecosystem. A. Seaweed B. Clam C. Sea urchin D. Sea gull
Sea Gulls
Sea Urchins
Clams
Seaweed
Sea Otters
Use the description below to answer the following question.
In a marine ecosystem, disease killed most of the sea otters. This allowed the sea urchins and clams to increase in number. As a result, the sea gull population increased and the seaweed population decreased. Identify a secondary consumer in this marine ecosystem. A. Seaweed B. Clam C. Sea urchin D. Sea gull
Sea Gulls
Sea Urchins
Clams
Seaweed
Sea Otters
Use the description below to answer the following question.
What abiotic factor is the initial energy source in most food webs?A. ProducersB. RainC. BacteriaD. Sun
What abiotic factor is the initial energy source in most food webs?A. ProducersB. RainC. BacteriaD. Sun