2. Review Climate

3. 1.Which biome has annual precip around 150 cm and temps around 10 C? 2.According to the graph, what is the range of average temps for Taiga? 3.Which two biomes are the driest? 4.Which of the following gets warmer in the summer: grassland or savanna? Warm-up

4. 3.1 Succession Quiz (10pts) 1. Put the following in the proper order: mature oak/hickoryyoung pines Pines diegrassesannual plants young oak/hickoryshrubs 2. Is this primary or secondary succession? 3. What would need to be present for this to be the other type of succession? 4. What does a pine’s shade tolerance have to do with the order above?

5. 3.3 Aquatic Ecosystems Communities, Biomes, and Ecosystems  Only about 2.5 percent of the water on Earth is freshwater. Freshwater Ecosystems Chapter 3

6. Rivers and Streams Communities, Biomes, and Ecosystems  The characteristics of rivers and streams change during the journey from the source to the mouth. 3.3 Aquatic Ecosystems Chapter 3

7.  Fast-moving rivers and streams prevent much accumulation of organic materials and sediment. Communities, Biomes, and Ecosystems  Usually, there are fewer species living in the rapid waters.  In slow-moving water, insect larvae are the primary food source for many fish, including American eel, brown bullhead catfish, and trout. 3.3 Aquatic Ecosystems Chapter 3

8. Communities, Biomes, and Ecosystems  The temperature of lakes and ponds varies depending on the season. Lakes and Ponds 3.3 Aquatic Ecosystems Chapter 3

9.  Lakes and ponds are divided into three zones based on the amount of sunlight that penetrates the water. Communities, Biomes, and Ecosystems  The area closest to the shore is the littoral zone. 3.3 Aquatic Ecosystems Chapter 3

10.  The limnetic zone is the open water area that is well lit and is dominated by plankton. Communities, Biomes, and Ecosystems 3.3 Aquatic Ecosystems Chapter 3

11.  The profundal zone is the deepest areas of a large lake. Communities, Biomes, and Ecosystems  It is much colder and lower in oxygen than the other two zones. 3.3 Aquatic Ecosystems Chapter 3

12. Transitional Aquatic Ecosystems Communities, Biomes, and Ecosystems  Areas of land such as marshes, swamps, and bogs that are saturated with water and that support aquatic plants are called wetlands. Bog 3.3 Aquatic Ecosystems Chapter 3

13. Communities, Biomes, and Ecosystems Marine Ecosystems  The intertidal zone is a narrow band where the ocean meets land.  Communities are constantly changing in this environment as a result of disturbance. 3.3 Aquatic Ecosystems Chapter 3

14. Communities, Biomes, and Ecosystems  The photic zone is shallow enough that sunlight is able to penetrate. Open Ocean Ecosystems 3.3 Aquatic Ecosystems Chapter 3

15. Communities, Biomes, and Ecosystems  Below the photic zone lies the aphotic zone—an area where sunlight is unable to penetrate. Open Ocean Ecosystems 3.3 Aquatic Ecosystems Chapter 3

16. Communities, Biomes, and Ecosystems  The benthic zone is an area along the ocean floor that consists of sand, silt, and dead organisms. 3.3 Aquatic Ecosystems Open Ocean Ecosystems Chapter 3

17. Communities, Biomes, and Ecosystems  The deepest region of the ocean is called the abyssal zone. 3.3 Aquatic Ecosystems Open Ocean Ecosystems Chapter 3