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Deciduous Forest
By: Christian sorensen
Liz Ovsynannikova
Mat Janick
Sophie Bramnick
Strengths and Weaknesses
Strengths
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The average temperature year
round is 50 degrees.
All the trees excluding the
evergreen, lose their leaves in the
winter so the tree can grow back
when it’s warm and the plant
doesn’t die.
There is a balance of predators and
prey so no species die out or starve.
The rainfall is 30-60 inches per year,
which is a good amount that keeps
the land hydrated but not overly
flooded.
The land is very fertile in that
region.
Unlike many other biomes, such as
the tundra or desert area, the
abiotic and biotic factors are easily
adaptable.
Weaknesses
• The deciduous forest is slowly being
destroyed from forest fires and people
clear cutting the trees for building space.
• The areas in the forest and the lakes within
them are becoming polluted from the
people living in them.
• The animals in the forest are leaving the
area because they have nothing to eat left
and are being hunted by humans.
Cycling of Nutrients Effected
• If the trees (autotrophs) are chop down it will
destroy the habitat and it will kill the omnivores
on the 2nd trophic level and since the primary
consumers are dead there is nothing for the
tertiary animals to eat, so on and so forth.
Flow of Energy
Effects of Biome Destruction
• Once a animal from the biome leaves or is forced out, many other
animals fight for survival.
• Abiotic Examples: Trees- Once trees are removed, hunting/breeding
grounds for animals become harder to reach for any animal,
deforestation kills countless amount of species each year leaving
other animals on the food chains to starve.
• Biotic Examples: Bears- once bears are removed, the trophic level
below them will overpopulate making there food source run out
quickly without it being able to replenish killing many in the one
food chain.
• More Information: More forest are disappearing each day
• Killing countless wildlife
• in the deciduous forest.
Basic Description of Deciduous Forest
• Location - Deciduous biomes are located primarily in the eastern half of
the United States, Canada, Europe, parts of Russia, China, and Japan.
• Climate - The average temperature of the forest is about 50 degrees F.
The average amount of rainfall in the forest is 30 to 60 inches a year.
• Animals - Precipitation in the temperate deciduous forest is spread
throughout the year. However, during the winter months it is usually
frozen and unavailable to animals. Animals living within this biome must
adjust to cold winters and hot summers. Also in the deciduous forests are
such animals as
Black Bear
Fox
Brown Bear
Basic Description of Deciduous Forest
• Plants -The word "Deciduous" means "falling off or out at a certain
season". That explains why deciduous forest means a forest in which the
leaves fall off the trees when the winter comes. In the deciduous forest
there are many flowers like the passion berry and the blue lily. There are
many other flowers but those are some of the main ones. Animals need
these trees because they provide shelter and some use them for food and
even water from the leaves.
Connections Between Biotic and
Abiotic factors
• Wind - Plants rely on winds to spread pollen, fertilizing nearby plants. But
winds also pick up particles from exposed soil, spreading not only dirt, but
any bacteria or fungal microorganisms that may be present in the soil.
• Water - Water is nonliving, and plants and animals rely on it for survival.
When the temperature and chemical makeup of the water is right, this can
encourage the growth of organisms. Rainfall is also a critical factor in the
deciduous forest; the constant precipitation keeps soil moist without
being wet, making it one of the most fertile biomes.
• Temperature -Warm spring months ease the plants and animals back to
life, encouraging animal reproduction with the development of new leaves
and plants. As the temperature starts to drop, the trees of the deciduous
forest lose their leaves and go into a state of hibernation. The long winter
months mean a struggle for survival during the long period when the
deciduous forest is snow-covered.