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BioticAbiotic.notebook
April 24, 2015
Ecosystems Unit
6.L.2.3: Abiotic and biotic factors affect the ability of organisms to grow, survive, and/or create their own food.
Warm Up
1) How do bacteria play a role in the recycling of matter?
2) Draw a food web using the living things listed below.
Essential Questions: 1) What is the difference between a biotic factor and an abiotic factor?
snake, hawk, shrub, deer, grasses, rabbit, mountain lion 2) What are examples of limiting factors in an environment? 3) How do organisms respond to limiting factors? Feb 9­12:13 PM
Feb 10­3:23 PM
What is the difference between a biotic factor and an abiotic factor? List the biotic and abiotic factors in the picture. bio means ???
biotic factor abiotic factors
the living parts of an ecosystem the nonliving parts of an ecosystem
examples: examples:
animals, plants, fungi, bacteria
water, minerals, rocks, air, soil, sunlight
Feb 9­12:10 PM
Feb 9­12:38 PM
Biomes
area that has similar conditions (climate, plants, animals, etc.)
Examples: Desert
Rainforest
Grasslands Forest
Feb 9­12:41 PM
Feb 18­2:27 PM
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BioticAbiotic.notebook
April 24, 2015
What are examples of limiting factors in an environment?
limiting factor: any factor or condition that limits the growth of a population in an ecosystem
What would be an example of a limiting factor?
­ too much/too little of food, water, light
­ large population of predators
How do organisms respond to limiting factors?
lack of water in grassland cause grass to .....
then reduces the number of seeds produced
Who eats the seeds?
What would happen to them?
Who depends on them to survive? What would happen to that population?
­ small population of prey
Feb 9­12:13 PM
Feb 9­12:14 PM
What do the Deer Do?
Oh Deer!
During this game we will find out how much the size of a deer herd could change each year. Some students will pretend to be food, water, shelter, and space­ the resources­ that the deer need for survival. A few students, selected by me, will pretend to be a disease or a predator that can kill the deer.
Each round of the game will represent a year in the forest. Feb 9­12:15 PM
Before each round, each student who represents a deer decides to look for food, water, shelter, or space and makes the sign for it. Once a sign is picked­ you can NOT change it.
What do the Resources Do? Before each round, each student who represents a resource decides to be food, water, shelter, or space and makes the sign for it. Once a sign is picked­ you can NOT change it. I will select a students each round to represent a disease and another to represent a predator. Feb 18­2:21 PM
Signs
Summarizing Results
1.) What happen to the size of the deer herd when there was plenty of food, water, shelter, and space during the game?
2) What happen to the size of the deer herd when there was a limited amount of food, water, shelter, and space? 3) What do you think would happen to thew size of a deer herd when resources are plentiful in a real forest? What about when the resources are limited?
Food
Water
Space
Shelter
4) How might deer interact within their ecosystem to meet their needs for water, food, shelter, and space? 5) What might change the amount of available food, water, shelter, or space from year to year in a real forest? 6) What besides birth and death might cause a change in the size of a deer herd?
Feb 18­2:22 PM
Feb 9­12:16 PM
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BioticAbiotic.notebook
April 24, 2015
Exit Ticket:
1) What environmental factor would most likely prevent an orange tree from surviving in the desert? lack of moisture 2) What are three abiotic and three biotic factors of a river ecosystem? (you can make a chart)
Feb 18­2:17 PM
Apr 24­11:57 AM
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