Texas Instruments
Texas Instruments: Jason: Island Fox: A Population in Trouble
Examine the relationship between the island fox and golden eagle populations on Santa Cruz Island over a twelve-year period using the TI-73 Explorer to graph and analyze the values.
Concord Consortium
Concord Consortium: Dam Removing: Changes in the Environment Affect Population
What happens to a population when the environment changes? Students remove a dam that divides an ecosystem to illustrate the effects of environmental changes. Students observe and collect data as the grass and then the rabbit populations...
Other
My Science Box: Ecosystem Organization
In this lesson plan, students will learn about the different levels in the hierarchy of ecology and explain the relationships: organism, population, community, ecosystem, biome, and biosphere. They will also discover why different...
Concord Consortium
Concord Consortium: Dam Building: How Changes in Environment Affect Population
In this simulation, students build a dam in the middle of a field, dividing an ecosystem in half to illustrate the effects of environmental changes. They watch and collect data as the grass and then the rabbit populations in that region...
Science Struck
Science Struck: Limiting Factors in the Desert Ecosystem
Describes conditions in a desert that limit how large populations of species can grow.
Oswego City School District
Regents Prep: Ecosystems/communities
Abiotic factors vary in the environment and determining the types and numbers of organisms that exist in that environment. Factors which determine the types and numbers of organisms of a species in an ecosystem are called limiting...
CPALMS
Florida State University Cpalms: Florida Students: Limits to Population Growth
Explore biotic and abiotic factors that can influence the growth of populations of organisms in this interactive tutorial.
Concord Consortium
Concord Consortium: Evolution: Natural Selection
The concept of interdependence in an ecosystem and its effect on the evolution of populations is further explored through a model of a dam. Students build a dam in the middle of the field, dividing the ecosystem in half to illustrate the...
University of California
University of California Berkeley: Ecosystem Equilibrium
A simulator reviewing over the concepts of ecosystem equilibrium.
American Geosciences Institute
American Geosciences Institute: Earth Science Week: Monitoring Life in the Rocky Intertidal Ecosystem
This activity will allow students to learn the sampling techniques used in the field by citizen scientists who participate in LiMPETS, five national marine sanctuaries along the West Coast.
Other
Hub Pages: Biotic Factors of Ecosystem: Producers, Consumers and Decomposers
An ecosystem is composed of biotic factors of a community of living organisms interacting with one another which we can see in food chains/webs. These diverse organisms stay together because of the need of food. Population is referred to...
Other
Virginia Places: What Determines the Boundaries of a Region in Virginia?
Although this site talks about regions in Virginia, it offers excellent information on regions in general, for example, ways regions might be classified; e.g., by population density, geology, watershed, ecosystem, economy,...
Science Buddies
Science Buddies: Bug Vacuums: Sucking Up Biodiversity
In this science fair project you can take on the role of a wildlife biologist by examining the biodiversity of insects in your own backyard. To do this, you will follow the directions to create a homemade bug vacuum.
Cosmo Learning
Cosmo Learning: Principles of Evolution, Ecology and Behavior
A collection of video lectures introducing beginning biology students to the principles of evolution, ecology, and behavior. The course was taught three times a week for a semester at Yale University. The course discusses concepts of...
PBS
Nh Pbs: Nature Works: Estuaries
Learn more about estuaries when you visit this informative site. This resource provides locations of and weblinks to estuaries in the United States.
Texas Education Agency
Texas Gateway: Living Organisms
Guide your students through a learning module about living organisms in a lake environment.
Other
Explore Learning: Food Chain Gizmo
In this ecosystem consisting of hawks, snakes, rabbits and grass, the population of each species can be studied as part of a food chain. Disease can be introduced for any species, and the number of animals can be increased or decreased...