Ecosystem Dynamics: Food Chains, Energy Pyramids, and Trophic Levels
Feb. 17
th
WARM UP
•
Write a simplified definition for the following:
1.
Food chain
2.
Energy pyramid
3.
Secondary consumer
4.
Trophic
ANNOUNCEMENTS:
See board
Learning Goal
•
4 – Explain the relationship between different
organisms of an ecosystem and describe the
importance of key species
•
3 – understand the basics of food webs and
food chains
•
2 – know what a food chain is
•
1 – need to review this concept
Food Chain vs Food Web
•
What is the difference?
•
What are keystone species?
•
What kinds of things can influence an
ecosystem?
1. Ecosystem
a.
Ecosystem:
b.
Biotic:
c.
Abiotic:
•
Study Jams Ecosystem
Food Chains
•
What was the food chain for our Hunger
Games lab?
•
What were some biotic & abiotic factors
•
Food Web
•
Food Chain & Pyramid
2. Organisms in an Ecosystem
a.
Animals that only eat plants
herbivores
b.
Animals that only eat animals
carnivores
c.
Animals that eat plants & animals
omnivores
d.
Organisms that breakdown other organisms
decomposers
•
Trophic
:
•
Each level can also
be called “trophic”
•
Means: food or
feeding in Greek:
Τροφή
Food Web Activity
•
Create a correct food web (at least 7 organisms)
for the following biomes with your table
–
Rain forest
–
Desert
–
Grassland
–
Deciduous forest (ie: Appalatians)
–
Boreal forest (ie: Canada)
–
Tundra
–
Stream
–
Ocean
Energy Pyramids
Energy Flow
•
With a partner discuss:
1.
If the food chain had continued to the next level,
what percentage of energy would the next level
consumer have received from the previous
consumer?
2.
How much water would you have transferred
into the the next level consumer’s cup?
3.
Judging from this activity, why do you think most
food chains never go higher than 2
nd
or 3
rd
level
consumers?
Fill in the blanks
http://schoolworkhelper.net/wp-content/uploads/2011/01/EnergyPyramid-26a65z5.gif
25 kcal
2500 kcal
2.5 kcal
Fill in the Blanks
250 kcal
B
kcal
C
kcal
http://www.proprofs.com/quiz-school/upload/yuiupload/244802756.jpg
A
kcal
Other Types of Pyramids
Number Pyramid
Biomass Pyramid
An exploration of key concepts in ecosystem dynamics, including food chains, energy pyramids, secondary consumers, and trophic levels. Discover the interconnected relationships between organisms in an ecosystem and the vital role of key species. Dive into the differences between food chains and food webs, understand the significance of keystone species, and learn about factors influencing ecosystems. Engage with activities to create food webs for various biomes and delve into the flow of energy through energy pyramids. Enhance your understanding of the intricate balance within ecosystems through collaborative discussions and interactive learning experiences.
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Presentation Transcript
Feb. 17thWARM UP Write a simplified definition for the following: 1. Food chain 2. Energy pyramid 3. Secondary consumer 4. Trophic ANNOUNCEMENTS: See board
Learning Goal 4 Explain the relationship between different organisms of an ecosystem and describe the importance of key species 3 understand the basics of food webs and food chains 2 know what a food chain is 1 need to review this concept
Food Chain vs Food Web What is the difference? What are keystone species? What kinds of things can influence an ecosystem?
1. Ecosystem a. Ecosystem: b. Biotic: c. Abiotic: Study Jams Ecosystem
Food Chains What was the food chain for our Hunger Games lab? What were some biotic & abiotic factors
2. Organisms in an Ecosystem a. Animals that only eat plants herbivores b. Animals that only eat animals carnivores c. Animals that eat plants & animals omnivores d. Organisms that breakdown other organisms decomposers
Trophic: Each level can also be called trophic Means: food or feeding in Greek:
Food Web Activity Create a correct food web (at least 7 organisms) for the following biomes with your table Rain forest Desert Grassland Deciduous forest (ie: Appalatians) Boreal forest (ie: Canada) Tundra Stream Ocean
With a partner discuss: 1. If the food chain had continued to the next level, what percentage of energy would the next level consumer have received from the previous consumer? 2. How much water would you have transferred into the the next level consumer s cup? 3. Judging from this activity, why do you think most food chains never go higher than 2nd or 3rd level consumers?
Fill in the blanks http://schoolworkhelper.net/wp-content/uploads/2011/01/EnergyPyramid-26a65z5.gif
Fill in the Blanks 2.5 kcal C kcal 25 kcal B kcal 250 kcal 2500 kcal A kcal http://www.proprofs.com/quiz-school/upload/yuiupload/244802756.jpg
Other Types of Pyramids Number Pyramid Biomass Pyramid
