1. http://www.life.uiuc.edu/animalbiology/105/ Name: eee105 Password: prAIRie

2. Ecology of freshwaters Lakes, rivers, and streams Limnology Lakes are born by catastrophe age, and quietly die rivers, and streams

3. Limnology Rivers are ancient Rivers carry sediment

4. Limnology Rivers are ancient Rivers carry sediment meander

5. Limnology A river creates its valley Rivers are ancient Rivers carry sediment meander

6. Limnology Estuaries

7. Limnology Lakes & rivers differ in food chains Lakes support photosynthetic chains CO 2 + water sugars phytoplankton Energy is autochthonous

8. Limnology Lakes & rivers differ in food chains Rivers support a detritus food chain Energy is allochthonous

9. Limnology Lakes are stratified in temperature a summer lake

10. Limnology Lakes are stratified in temperature wind epilimnion mixes hypolimnion stagnates a summer lake

11. Limnology Lakes are stratified by light photosynthesis detritus decomposition nutrient rich sediment a summer lake

12. Limnology Lakes are stratified There are 2 lakes productive epilimnion detritus food chain releasing nutrients during warm phytoplankton starved for nutrients a summer lake months

13. Limnology In the fall surface water cools 4 0 C water sinks fall turnover phytoplankton blooms nutrients returned wind to epilimnion

14. Limnology In the fall surface water cools 4 0 C water sinks fall turnover phytoplankton blooms nutrients returned wind to epilimnion

15. Limnology In the winter ice lake is sealed

16. Limnology In the spring spring turnover nutrients mixed into epilimnion phytoplankton bloom wind

17. Limnology Lake food chain phytoplankton zooplankton nekton

18. Limnology Zooplankton migration

19. Limnology The Lake as a Microcosm -- Steven J. Forbes

20. Limnology An ecosystem united seasonally