ecosystems and biomes food chains and food webs the movement of energy though an ecosystem can be...
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Ecosystems and Biomes
Food Chains and Food WebsThe movement of energy though an ecosystem can be shown in diagrams called food chains and food webs.
- Energy Flow in Ecosystems
Ecosystems and Biomes
Consumers
Click the Video button to watch a movie about consumers.
- Energy Flow in Ecosystems
Ecosystems and Biomes
The Water Cycle
- Cycles of Matter
The processes of evaporation, condensation, and precipitation make up the water cycle.
Ecosystems and Biomes
The Carbon and Oxygen CyclesIn ecosystems, the processes by which carbon and oxygen are recycled are linked. Producers, consumers, and decomposers play roles in recycling carbon and oxygen.
- Cycles of Matter
Ecosystems and Biomes
The Nitrogen Cycle
- Cycles of Matter
In the nitrogen cycle, nitrogen moves from the air to the soil, into living things, and back into the air.
Ecosystems and Biomes
Continental DriftOne factor that has affected how species are distributed is the motion of Earth’s continents.
- Biogeography
Ecosystems and Biomes
Limits to Dispersal
- Biogeography
The typical weather pattern in an area over a long period of time is the area’s climate.
Ecosystems and Biomes
Rain Forest BiomesTemperate rain forests receive a great deal of rain and have moderate temperatures.
- Biomes
Ecosystems and Biomes - Biomes
Rain Forest BiomesTropical rain forests are wet, warm biomes that contain an amazing variety of plants and other organisms.
Ecosystems and Biomes - Biomes
Desert BiomesA desert is an area that receives less than 25 centimeters of rain per year.
Ecosystems and Biomes - Biomes
Grassland BiomesA grassland is an area that is populated mostly by grasses and other nonwoody plants.
Ecosystems and Biomes
Deciduous Forest BiomesMany of the trees in the deciduous forest are deciduous trees, which shed their leaves and grow new ones each year. A deciduous forest receives at least 50 centimeters of precipitation each year. Temperatures vary greatly through the year.
- Biomes
Ecosystems and Biomes
Boreal Forest BiomesMost of the trees in the boreal forest are coniferous trees, trees that produce their seeds in cones and have leaves shaped like needles. Winters in the boreal forest are cold and very snowy, but summers are warm and rainy enough to melt all the snow.
- Biomes
Ecosystems and Biomes - Biomes
TundraThe tundra is an extremely cold and dry biome. Most of the soil in the tundra is permafrost, which is frozen all year.
Ecosystems and Biomes - Biomes
Mountains and IceSome areas of land are not part of any major biome. These areas include mountain ranges and land that is covered with thick sheets of ice.
Ecosystems and Biomes
Biome Climates
An ecologist collected climate data from two locations. The graph shows the monthly average temperatures in the two locations. The total yearly precipitation in Location A is 250 cm. In Location B, the total yearly precipitation is 14 cm.
- Biomes
Ecosystems and Biomes
Biome Climates
Month is plotted on the horizontal axis; temperature is plotted on the vertical axis.
Reading Graphs:
What variable is plotted on the horizontal axis? On the vertical axis?
- Biomes
Ecosystems and Biomes
Biome Climates
Location A temperatures are steady; Location B temperatures fluctuate.
Interpreting Data:
Look over the graph. How would you describe the temperature over the course of a year in Location A? In Location B?
- Biomes
Ecosystems and Biomes
Biome Climates
Location A: tropical rain forestLocation B: desert
Drawing Conclusions:
Given the precipitation and temperature data for these locations, in which biome would you expect each to be located? Explain your answers.
- Biomes
Ecosystems and Biomes
Biome Climates
Answers will vary but should reflect whether local climate is hot or cold, seasonal or steady.
Predicting:
What would you expect a temperature graph for your biome to look like? Draw a temperature graph for the biome in which you live.
- Biomes
Ecosystems and Biomes
Character-istic
Comparing and ContrastingAs you read, compare and contrast the different biomes by completing a table like the one below.
Warm all year
- Biomes
Tropical Rain Forest
TundraTemperate Rain Forest
Desert GrasslandDeciduous Forest
Boreal Forest
Tempera-ture
Precipit-ation
Typical organisms
Cold all year
Cool winters, warm in summer
Usually hot with great daily extremes
Temps vary throughout the year
Warm in summer, cold in winter
Warm to cool in summer, cold in winter
Wet all year Dry all yearRather wet all year
Dry all yearMostly dry with a wet season
Moderate rainfall
Abundant rain and snow
Orangutan Mosses Mule deerGamble’s quail
Grasses Red fox Lynx
Ecosystems and Biomes
Marine EcosystemsThe ocean is home to a number of different ecosystems. Factors such as water temperature and the amount of sunlight determine what types of organisms can live in each zone.
- Aquatic Ecosystems
Ecosystems and Biomes
Marine EcosystemsThe ocean is home to a number of different ecosystems. Factors such as water temperature and the amount of sunlight determine what types of organisms can live in each zone.
- Aquatic Ecosystems
Ecosystems and Biomes
Graphic Organizer
Bacteria in root nodules fix free
nitrogen into compounds.
Decomposers break down wastes and remains of organisms.
Bacteria release some free
nitrogen back into the air.
Free nitrogen is present in air.
Consumers obtain nitrogen by eating
plants.
Nitrogen Cycle