Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this...
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Transcript of Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this...
![Page 1: Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this graph? Which is the prey? 2.What happens to the population.](https://reader036.fdocuments.net/reader036/viewer/2022062906/5a4d1b227f8b9ab059995deb/html5/thumbnails/1.jpg)
Aim: How do different types of populations grow?
DO NOW1. Which organism is
the predator in this graph? Which is the prey?
2. What happens to the population of moose in ~1982?
![Page 2: Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this graph? Which is the prey? 2.What happens to the population.](https://reader036.fdocuments.net/reader036/viewer/2022062906/5a4d1b227f8b9ab059995deb/html5/thumbnails/2.jpg)
Carrying Capacity
• The number of organisms of a species that can live & survive in an area
• Dependent on the amount of resources in an area & the work of decomposers
• Limiting factors affect carrying capacity, either increasing or decreasing carrying capacity!
• Limiting factors can include the amount of food & water available, how many predators exist in the area & if disease is present …etc.
![Page 3: Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this graph? Which is the prey? 2.What happens to the population.](https://reader036.fdocuments.net/reader036/viewer/2022062906/5a4d1b227f8b9ab059995deb/html5/thumbnails/3.jpg)
Population Growth Graphs
• Dashed line on a growth graph represents the carrying capacity
• J-shaped curve graph illustrates exponential growth of a population
• S-shaped curve graph illustrates logistic growth of a population
![Page 4: Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this graph? Which is the prey? 2.What happens to the population.](https://reader036.fdocuments.net/reader036/viewer/2022062906/5a4d1b227f8b9ab059995deb/html5/thumbnails/4.jpg)
Exponential Growth
• Population grows slow at first, then grows fast, quickly!
• No limiting factors at work in the population’s environment no limits on growth or unrestricted growth
• Ideal circumstances no carrying capacity
![Page 5: Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this graph? Which is the prey? 2.What happens to the population.](https://reader036.fdocuments.net/reader036/viewer/2022062906/5a4d1b227f8b9ab059995deb/html5/thumbnails/5.jpg)
Logistic Growth
• Population grows slow at first, then grows quickly, then growth slows or stops around carrying capacity
• Many populations grow like this• Limiting factors are at work! restricted growth
![Page 6: Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this graph? Which is the prey? 2.What happens to the population.](https://reader036.fdocuments.net/reader036/viewer/2022062906/5a4d1b227f8b9ab059995deb/html5/thumbnails/6.jpg)
Exponential vs. Logistic Growth
![Page 7: Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this graph? Which is the prey? 2.What happens to the population.](https://reader036.fdocuments.net/reader036/viewer/2022062906/5a4d1b227f8b9ab059995deb/html5/thumbnails/7.jpg)
Human Population GrowthHow is the human population growing with time?
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What kind of growth is this population of fish showing?
![Page 9: Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this graph? Which is the prey? 2.What happens to the population.](https://reader036.fdocuments.net/reader036/viewer/2022062906/5a4d1b227f8b9ab059995deb/html5/thumbnails/9.jpg)
![Page 10: Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this graph? Which is the prey? 2.What happens to the population.](https://reader036.fdocuments.net/reader036/viewer/2022062906/5a4d1b227f8b9ab059995deb/html5/thumbnails/10.jpg)
Fluctuation of Growth around Carrying Capacity
• Population growth tends to fluctuate or go up and down, around carrying capacity, since limiting factors are at work! This is the stable equilibrium phase of growth!
![Page 11: Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this graph? Which is the prey? 2.What happens to the population.](https://reader036.fdocuments.net/reader036/viewer/2022062906/5a4d1b227f8b9ab059995deb/html5/thumbnails/11.jpg)
![Page 12: Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this graph? Which is the prey? 2.What happens to the population.](https://reader036.fdocuments.net/reader036/viewer/2022062906/5a4d1b227f8b9ab059995deb/html5/thumbnails/12.jpg)
Population Growth that has Stopped ! (at carrying capacity)
![Page 13: Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this graph? Which is the prey? 2.What happens to the population.](https://reader036.fdocuments.net/reader036/viewer/2022062906/5a4d1b227f8b9ab059995deb/html5/thumbnails/13.jpg)
Video
• https://www.brainpop.com/science/ourfragileenvironment/populationgrowth/
![Page 14: Aim: How do different types of populations grow? DO NOW 1.Which organism is the predator in this graph? Which is the prey? 2.What happens to the population.](https://reader036.fdocuments.net/reader036/viewer/2022062906/5a4d1b227f8b9ab059995deb/html5/thumbnails/14.jpg)
Homework
• On page 109 in your textbook, write out & answer questions 4 & 5.
• In addition, on page 112, write out & answer questions 2, 6 and 7.
• Total # of questions to answer = 5 questions!• Good Luck!