1. Unit 3 Part 3 Ecosystems of the world p. 101 - 109

2. 17. Define “climax vegetation” p. 102 The natural vegetation in the last possible stage of vegetation development. The natural vegetation in the last possible stage of vegetation development. Climax vegetation is stable and in balance with the climatic conditions Climax vegetation is stable and in balance with the climatic conditions It should change very little if left undisturbed It should change very little if left undisturbed

3. 18. Describe “climax vegetation” in coniferous forest. P. 102 Evergreen trees Evergreen trees Needle like leaves Needle like leaves Thick bark Thick bark Conical shape Conical shape Dense growing which blocks sun Dense growing which blocks sun Coniferous forests

4. 19.Analyze world ecosystem map. a. Boreal Forest & tundra are wide spread in high latitudes b. Tropical Rain Forests occur in low latitudes c. Tropical Rain forest is most predominant in South America. d. South America, Africa, Australia and Antarctica do not have tundra. e. Boreal forest is our ecosystem

5. 20.Ecosystems vs. climatic regions p.104 Ecosystems of the world are largely defined by their climax vegetation. Ecosystems of the world are largely defined by their climax vegetation. Example: tropical rain forest, grasslands, boreal forests, cacti, etc. Example: tropical rain forest, grasslands, boreal forests, cacti, etc. Climax Vegetation is determined by climate. Therefore, ecosystems parallel climate zones Climax Vegetation is determined by climate. Therefore, ecosystems parallel climate zones Climate zones Ecosystem zones

6. 20.Continued (Ecosystems vs. climatic regions p.104) Arid gives Desert Semi-Arid gives Grassland Tropical Wet gives Tropical Rain forest Temperate cold winter gives Boreal Forest Temp. mild winter gives Temp. deciduous Forest Worksheet 6.2 reviews this well.

7. 21. Altitudinal succession vs. latitudinal succession p. 104 The changes in ecosystems that occur as one moves from the equator to the poles is very similar to the changes in ecosystems seen moving from the base of an tropical mountain to the summit. The changes in ecosystems that occur as one moves from the equator to the poles is very similar to the changes in ecosystems seen moving from the base of an tropical mountain to the summit.

8. 22.Ecosystem climatic conditions p.104 Tundra Polar – sub arctic climate Polar – sub arctic climate Short summers Short summers Avg. mo nthly temp. always below 10 o C Avg. mo nthly temp. always below 10 o C Very cold long winter Very cold long winter Light precipitation Light precipitation

9. 22.Continued (Ecosystem climatic conditions p.104) Boreal Forest Temperate cold winter climate Temperate cold winter climate Warm summers Warm summers Moderate precipitation Moderate precipitation

10. 22.Continued (Ecosystem climatic conditions p.104) Temperate Deciduous Forest Temperate Mild winter climate Temperate Mild winter climate Warm – hot summers Warm – hot summers Moderate - heavy precipitation Moderate - heavy precipitation

11. 22.Continued (Ecosystem climatic conditions p.104) Temperate Grassland Semi-arid climate or temperate cold winter Semi-arid climate or temperate cold winter Light precipitation, most of it occurs in summer Light precipitation, most of it occurs in summer Warm to hot summer Warm to hot summer Cold winters Cold winters

12. 22.Continued (Ecosystem climatic conditions p.104) Savanna Tropical wet & Dry to semi-arid climate Tropical wet & Dry to semi-arid climate High temperatures most of the year High temperatures most of the year Light to Moderate precipitation usually all in one season Light to Moderate precipitation usually all in one season

13. 22.Continued (Ecosystem climatic conditions p.104) Desert Arid climate Arid climate High temperatures year round High temperatures year round little precipitation little precipitation

14. 22.Continued (Ecosystem climatic conditions p.104) Tropical Rain Forest Tropical Wet climate Tropical Wet climate High temperatures year round High temperatures year round High precipitation year round High precipitation year round

15. 22.Continued (Ecosystem climatic conditions p.104) Mountain Different climates at different elevations Different climates at different elevations High elevations often like tundra High elevations often like tundra

16. Lab /Practice questions Questions #23 24, 25 p. 105-106 make a nice practice or even a lab!! Questions #23 24, 25 p. 105-106 make a nice practice or even a lab!!