Freshwater Biogeography Quiz: Test Your Knowledge of Aquatic Ecosystems & Species Diversity

1. Climate change is altering the geographic distribution of many freshwater species.

2. Human activities have little effect on freshwater species distribution.

3. Lakes and rivers rarely experience species endemism.

4. Wetlands help purify freshwater by filtering pollutants naturally.

5. Freshwater ecosystems support more species per unit area than marine ecosystems.

6. Which nutrient can trigger excessive algal growth in freshwater bodies?

7. An endemic freshwater species is one that:

8. Dams affect freshwater biogeography mainly by:

9. The mixing of warm and cold water layers in a lake is called:

10. Species diversity in freshwater ecosystems increases when:

11. Which factor MOST strongly affects species distribution in lakes?

12. Wetlands are often described as:

13. Which freshwater biome is known for seasonal flooding that shapes species patterns?

14. The term “ecological connectivity” in freshwater biogeography refers to:

15. Which of these threatens freshwater species the MOST globally?

16. River biogeography is strongly influenced by:

17. Species endemism in freshwater bodies occurs mainly because:

18. Which freshwater ecosystem typically supports the highest primary productivity?

19. Which group is commonly used as an indicator of freshwater ecosystem health?

20. The zone of a lake with the most sunlight penetration is called:

21. What is biogeography primarily concerned with?

22. Which of the following is NOT a freshwater ecosystem?

23. Freshwater ecosystems make up roughly what percentage of Earth’s water?

24. Why do freshwater ecosystems contain high species diversity?