Transcript 5 Abiotic factors affect the biocenosis

UNIT
5
Ecosystems
ABIOTIC FACTORS
AFFECT THE BIOCENOSIS
Natural Science 2. Secondary Education
UNIT
5
Abiotic factors affect the biocenosis
• The abiotic factors of in an ecosystem determine the biocenosis that
exists within it. This means that the vegetation and fauna that develop
in a given biotope are the ones that are capable of surviving the
physical conditions of this biotope.
Click on the picture to
see an example.
Natural Science 2. Secondary Education
UNIT
5
Abiotic factors affect the biocenosis
1. For example, plants that live in a dry environment
have roots which gradually break up the surface of
the ground.
Natural Science 2. Secondary Education
UNIT
5
Abiotic factors affect the biocenosis
2. This loose soil is able to store
more moisture, facilitating the
growth of larger plants, like
trees.
Natural Science 2. Secondary Education
3. The leaves of these
trees prevent sunlight
from reaching the
ground. As their roots
grow, the ground gets
broken up further.
UNIT
5
Abiotic factors affect the biocenosis
4. A different biocenosis develops from this newly
modified ground and continues to loosen the soil and
cause its level of moisture to increase.
Natural Science 2. Secondary Education
UNIT
5
Abiotic factors affect the biocenosis
5. The trees continue to grow, creating more shade. A large
amount of water evaporates through their leaves. All of this
causes changes in the climate.
Natural Science 2. Secondary Education
UNIT
5
Abiotic factors affect the biocenosis
6. After many years, these changes
in the biotope can have a great
impact, resulting in the
transformation of a patch of dry
land into a humid forest.
Natural Science 2. Secondary Education