Population Ecology:
Understanding Growth Models and Human Impacts
Let's go!
Learning Objectives: 1. Differentiate exponential vs. logistic growth. 2. Interpret survivorship and age structure data. 3. Connect population dynamics to environmental issues. Navigation: To navigate between slides, click the arrow buttons at either side of your screen, < for back and > for forward.
Level 1:
Exponential vs Logistic Growth
Click to reveal examples of Exponential and Logistic growth in species
Exponential:
Logistic:
Level 2:
Survivorship Curves & Age Structure Diagrams
Click to reveal examples of Survivorship Curves
Type I (human):
Type III (insect):
Type II (bird):
Level 3:
Human Population Growth
Interactive Population Dynamics Lab
Click the button to launch the HHMI BioInteractive Population Dynamics Simulator in a new tab. Adjust the sliders for birth rate, death rate, and carrying capacity. When you return, answer the reflection questions on the next slide.
Case Study 1:Deer population overshoot
What happens when apex predators are removed?
After apex predators like wolves were removed from Yellowstone, elk populations boomed. Elk overgrazed young willow, aspen, and cottonwood trees, particularly along riverbanks. Without the trees, stream banks eroded, water bodies became murkier, and beaver habitats declined. Fish, amphibians, and other riparian species suffered from habitat loss and poor water quality.
Case Study 1:Deer population overshoot
What happens when apex predators are removed?
Overgrazing also reduced berry-producing shrubs, harming grizzly bears and pollinators. Plants lost to heavy browsing used to provide shelter for small mammals and birds. When wolves were reintroduced in 1995, many of these vegetation communities began recovering. River areas showed new growth, and ecosystem processes like dam-building by beavers resumed.
Now it is time to TEST your knowledge with the Population Ecology Mastery Summative Assessment!
Take the "Population Ecology Mastery Quiz"
Task 2: Fully Functioning E-Learning Module
Jesse Allen
Created on October 19, 2025
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Transcript
Population Ecology:
Understanding Growth Models and Human Impacts
Let's go!
Learning Objectives: 1. Differentiate exponential vs. logistic growth. 2. Interpret survivorship and age structure data. 3. Connect population dynamics to environmental issues. Navigation: To navigate between slides, click the arrow buttons at either side of your screen, < for back and > for forward.
Level 1:
Exponential vs Logistic Growth
Click to reveal examples of Exponential and Logistic growth in species
Exponential:
Logistic:
Level 2:
Survivorship Curves & Age Structure Diagrams
Click to reveal examples of Survivorship Curves
Type I (human):
Type III (insect):
Type II (bird):
Level 3:
Human Population Growth
Interactive Population Dynamics Lab
Click the button to launch the HHMI BioInteractive Population Dynamics Simulator in a new tab. Adjust the sliders for birth rate, death rate, and carrying capacity. When you return, answer the reflection questions on the next slide.
Case Study 1:Deer population overshoot
What happens when apex predators are removed?
After apex predators like wolves were removed from Yellowstone, elk populations boomed. Elk overgrazed young willow, aspen, and cottonwood trees, particularly along riverbanks. Without the trees, stream banks eroded, water bodies became murkier, and beaver habitats declined. Fish, amphibians, and other riparian species suffered from habitat loss and poor water quality.
Case Study 1:Deer population overshoot
What happens when apex predators are removed?
Overgrazing also reduced berry-producing shrubs, harming grizzly bears and pollinators. Plants lost to heavy browsing used to provide shelter for small mammals and birds. When wolves were reintroduced in 1995, many of these vegetation communities began recovering. River areas showed new growth, and ecosystem processes like dam-building by beavers resumed.
Now it is time to TEST your knowledge with the Population Ecology Mastery Summative Assessment!
Take the "Population Ecology Mastery Quiz"