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Chapter 3 Biomes
Biomes which are defined by climate
28
Biology
9th Grade
09/16/2012

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Term
What is a Biome?
Definition
group of ecosystems with the same climax communities, biomes on land are called terrestrial biomes, those in water are called aquatic biomes.
Term
What defines a biome?
Definition
The climate of the region defines the biome.
Term
What are the aquatic biomes?
Definition
There are fresh water and marine water biomes.
Term
Name the marine biomes?
Definition
Photic zone (shallow, sunlight penetrates) Along most coastlines.
Estuary (coastal where salt water and fresh water mix,partially surrounded by land. Intertidal zone (portion of the shoreline that lies between the high and low tide. Aphotic zone (is the deepest, least explored areas of the ocean with little or no light)
Term
What is plankton?
Definition
Small organisms that drift and float in the water of the photic zone. MOST SEA CREATURES DEPEND ON PLANKTON FOR FOOD.
Term
What are the freshwater biomes?
Definition
Lakes, ponds, wetlands, swamps, and marshes.
Term
What abiotic factor limits life in deep lakes?
Definition
light
Term
Name the terrestrial biomes?
Definition
Tundra (treeless land) Taiga (coniferous trees) Desert (arid region with hardly any plant life) Grasslands (rich soil, grasses, and plants)Temperate forest (large diciduous trees) Tropical rain forest (warm temperatures, wet weather, lush plant growth)
Term
Name biomes of North America?
Definition
Desert, grasslands, tundra, deciduout forest, taiga, tropical rain forest
Term
Why do various combinations of abiotic and biotic interacting in different places in the world result in?
Definition
The result is that conditions in one part of the world are suitable for supporting certain forms of life, but NOT all life.
Term
What is a limiting factor?
Definition
It is a biotic or abiotic factor that limits or restricts the existence, numbers, reproduction, or distribution of an organism.
Term
What are some limiting factors?
Definition
High elevations, low temperatures, strong winds, soil to thin to support the growth of anything except small shallow-rooted plants, mosses, ferns, and lichens. SUNLIGHT, CLIMATE, TEMPERATURE, WATER, NUTRIENTS/FOOD, FIRE, SOIL CHEMISTRY, SPACE, OR OTHER ORGANISMS.
Term
What is tolerance factor?
Definition
It is the ability of an organism to withstand changes in biotic and abiotic environmental factors.
Term
When are the limits of an organisms tolerance reached?
Definition
When the organism receives too much or too little of some environmental factor.
Term
How does the organism respond when their limits of tolerance have been reached.
Definition
The organism responds by becoming smaller as conditons move toward either of the availability of resources.
Term
What is succession?
Definition
It is the orderly, natural changes and species replacement that takes place in the community of an ecosystem.
Term
What is primary succession?
Definition
It is the colonization of barren land by communities of organisms. Primary succession takes place where no other organisms live.
Term
What is a climax community?
Definition
A stable, mature community that undergoes little or no change over time.
Term
What is secondary succession?
Definition
It is the sequence of changes that takes place after an existing community is severely disrupted in some way. This can take place on land where life was previously contained and still contains soil.
Term
What is an example of secondary succession?
Definition
Yellowstone National Park fire of 1988.
Term
What are limiting factors of the intertidal zone?
Definition
Low tides isolate organisms, which also causes changes in nutrient and oxygen levels from one time of day to another.
Term
What causes the rise and fall of the ocean tides?
Definition
The gravitational pull of the sun and moon causes the rise and fall of the ocean tides.
Term
Why are plankton important?
Definition
They form the baseof all aquatic food chains.
Term
How does latitude effect climate as you move away from the equator?
Definition
At different latitudes the climate, wind, cloud cover, temperature, humidity and rain changes. As you move away from the equator the sun's rays strike less directly, because they are farther away. This effects the communities that will develop in these areas.
Term
What types of abiotic factors are working with latitude on climate?
Definition
Latitude and climate are abiotic factors that affect what plants and animals will survive in a given area.
Term
What are the two kinds of tundra?
Definition
Arctic and alpine tundra.
Term
Where would you find alpine tundra?
Definition
Alpine tundra can be found in high altitudes, 2 miles above sea level, in parts of Europe, Asia, and North America.
Term
Where will you find Arctic tundra?
Definition
As the name suggests in the Arctic. It has licen, mosses and permafrost. Taiga
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