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Biomes & Limiting Factors

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by

Caroline Goff

on 19 June 2017

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Transcript of Biomes & Limiting Factors

A
limiting factor
is an abiotic characteristic that can limit the growth of a population in an area. You will be learning about various biomes found in North America and will then be asked to identify the primary limiting factors for plant and animal life in those biomes.

Biomes & Limiting Factors
The amount of precipitation and type of soil are examples of limiting factors

Temperate Deciduous Forest
Coniferous Forest or Taiga
Coniferous trees have needle-like leaves and shallow roots
Temperate Grasslands
Desert
One thing that is interesting about this biome and its climate is that it has four distinct seasons; spring, summer, autumn, and winter. Most deciduous forests have mild summers averaging about 70 °F. Summer months usually begin in early June and end in late August. Winter months don't begin until December. Winter temperatures are fairly cool with an average temperature of a little below freezing. Almost all of the world's deciduous forest is located by an ocean. The ocean and the wind are two big factors of why the temperature and climate change so much in this biome.
Climate is a mix of temperature and precipitation. Deciduous forests have almost 14 inches of rain in the winter months and more than 18 inches of rain in the summer.
The soil in temperate deciduous forests tends to be deep and rich with a wide variety of nutrients because it receives a new blanket of leaves every autumn. The foliage of low-lying plants dies off and adds its own nutrient characteristics to the soil. During the winter, snow blankets the ground. Beneath its protective layer, bacteria, earthworms, and insects continue to break down the dead vegetation, creating dark humus. Humus is the spongy matter produced when the remains of plants and animals are broken down. It contains chemicals, like nitrogen, that are vital to plant growth, and it is able to absorb water. Oak leaves are difficult to break down so the soil beneath oak trees is not as rich.
Read about the climate of the
Temperate Deciduous Forest Biome and choose 2 important limiting factors.
A
Biome
is a geographical region that has a particular enviroment and climate; therefore, particular plant and animal life will live there.

Deciduous trees lose their leaves in the winter
Read about the
Coniferous Forest Biome
and choose 2 important
limiting factors
Grasses and wildflowers have short reproductive cycles
Read about the climate of the
Grassland Biome and choose
2 limiting factors
Cactuses can store water
for long periods and protect themselves with spines
Read about the climate in the
Desert Biome
and choose 2 limiting factors.
Plants and Animals Typical in the Temperate Deciduous Forest
Plants and Animals Typical in the Coniferous Forest (Taiga) Biome
Plants and Animals Typical in the Grassland (Prairie) Biome
Plants and Animals Typical in the Desert Biome
Full transcript