1. 2.9 Major Aquatic Ecosystems Pages 60-62

2. Freshwater Ecosystems salt concentration below 1% Puddles Ponds Rivers Streams Lakes

3. Rivers and Streams Run from high elevations to low elevations

4. Animals that live in rivers and streams Organisms must swim or anchor themselves to the bottom

5. Plants

6. Freshwater Ecosystems Oligotrophic lake Deep Cold Nutrient poor Clear

7. Plants that live in oligotrophic lakes Few algae Few rooted plants

8. Animals that live in oligotrophic lakes Lake troutsmall mouth bass crayfish

9. Eutrophic Lakes High in nutrients Many plants and algae Cloudy with microscopic plankton

10. Eutrophic Lakes Lots of algae and rooted water plants

11. Eutrophic Lake Animals Very biodiverse

12. Wetlands and Bogs Shallow water Saturated soils Nutrient rich Filters water Huge biodiversity

13. Marsh

14. Bog

15. Wetlands

16. Watershed An area of land through which all water drains into a single river or lake.

17. Marine Ecosystems Important part of water cycle 3% salt concentration Produce oxygen Absorbs carbon dioxide

18. Oceans Support little life Open ocean is nutrient poor and deep ocean is too dark for plants

19. Oceans Continental shelves Rich in nutrients Huge biodiversity

20. Oceans Cover 70% of Earth’s surface

21. Coral Reefs Warm shallow oceans Huge biodiversity Tourism Sensitive

22. Estuaries Fresh water and saltwater environments mix Shellfish Rich in nutrients

23. Mangroves Along tropical and semitropical sandy shorelines Prevent erosion

24. The Intertidal Zone The area between high tide and low tide 2 tides a day Summer and winter extremes and wave action Seaweeds Barnacles Sea stars urchins

25. Intertidal zones