The student-active approaches listed here are suggestions and examples; modify them as appropriate for your teaching. Note that there are two Figure Sets concerning zebra mussels.

Figure 1 shows how having multiple species present in a plant community can stabilize ecosystem processes if species vary in their responses to environmental fluctuations such that an increased ...

which preys upon the other species as a top predator (Figure 1). Paine (1966) had observed that the diversity of organisms in rocky intertidal ecosystems declined as the number of predators in ...

In this Issue, students will examine published data that address the ecological consequences of introduced species. Activities engage students in data analysis and hypothesis testing and will increase ...

We're in the midst of the Earth’s sixth mass extinction crisis. Harvard biologist E. O. Wilson estimated that 30,000 species per year (or three species per hour) are being driven to extinction.