Biotic and Abiotic Factors

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Introducing
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Ecosystem
includes all abiotic and biotic factors in one
particular environment
Biotic Factors
Abiotic Factors
the living parts of an ecosystem
the nonliving parts of an ecosystem
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Biotic Factors
Bio
include plants, animals, fungi, microorganisms
bio(s), bio(t) (G) root life
biology
biostatistics
biography
biotechnology
biosphere
biomechanics
biotic
biofeedback
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Examples of Biotic Factors
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Abiotic Factors
A
include air, water, soil, temperature, wind,
source of energy (usually sun)
a, an (G) prefix not, without
atoxic
amoral
abiotic
amusia
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Examples of Abiotic Factors
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Examples of Ecosystems
Arizona Desert
Mountains in Colorado
Coral Reef in Belize
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The Sun

• Definition A flaming ball of hot gas that gives
  off heat and energy.
• Characteristics abiotic, hot, gives off light
  energy, star, helps plants produce food
• Illustration Draw a picture of the sun

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Producer

• Definition An organism that can make its own
  food.
• Characteristics autotroph-can carry out
  photosynthesis, biotic, source of all the food in
  an ecosystem
• Examples grass, oak tree, flowers, other plants
• Illustration Draw a picture of a tree

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Consumer

• Definition An organism that obtains energy by
  feeding on other organisms.
• Characteristics
• heterotroph- depend on producers for food and
  energy
• Herbivores- eat only plants
• Carnivores- eat only meat
• Omnivores- eats both plants and animals

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Consumer

• Examples
• Humans, sharks, snakes, lions, hawks
• Illustration
• Draw a picture of a consumer

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Decomposer

• Definition Organisms that break down wastes and
  dead organisms and return the raw materials to
  the environment.
• Characteristics
• Return simple molecules to the environment
• Remove waste and dead organisms

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Decomposer

• Examples Bacteria and fungi, such as mold and
  mushrooms
• Illustration Draw a picture of a mushroom

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Scavenger

• Definition- a carnivore that feeds on the bodies
  of dead organisms.
• Examples Vultures, catfish, ants

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Ecosystems
do not necessarily have clear boundaries due to
biotic and abiotic changes
can change daily as things move from one
ecosystem to another
Biotic
Abiotic
migration, seed dispersal
flood, erosion, drought
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Biotic Factors
interact with each other in complex ways
parasitism mutualism competition
such as
also interact with abiotic factors in the
ecosystem
dependent upon water, minerals, temperature, light
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Biome
a major regional or global biotic community, a
super ecosystem, defined chiefly by the dominant
forms of plant life and the prevailing climate
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Major Biomes of the World
desert
grassland
tropical rain forest
deciduous forest
coniferous forest
tundra
ocean
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Levels of Organization
smallest unit of living things
group of similar cells organized to work together
group of different kinds of tissues working
together
group of organs working together
one individual living thing
all organisms of the same kind living in one area
all interacting populations in an ecosystem
all living and nonliving things interacting
within a certain area
large region with typical plants and animals that
includes several ecosystems
cell
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Bibliography
Arms. (1996). Environmental Science.
Orlando,Florida Holt, Rinehart and
Winston, Inc.
McLaren, James E, and Rotundo, Lisa (1985).
Heath Biology. D. C. Heath and Company.
The American Heritage Dictionary of the English
Language, Third Edition. (1992). Houghton
Mifflin Company.