Biotic and Abiotic Factors

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Introducing
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Eco
logy
Ecology
the study of the relationships between biotic and
abiotic factors in environments
eco (G) root home, abode
log, -o, y (G) suffix study of
ecoclimate
ecosystem
ecotourism
zoology
epidemiology
climatology
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Biotic Factors
Bio
include plants, animals, fungi, microorganisms
bio(s), bio(t) (G) root life
biotechnology
biosphere
biostatistics
biotic
biofeedback
biology
biography
biomechanics
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Examples of Biotic (living) 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
abiotic
amoral
atoxic
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Examples of Abiotic (non-living) Factors
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Biome
a large geographic area with specific plant and
animal groups. The climate and other abiotic
factors determine what type of biome exists.
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Major Biomes of the World
desert
grassland
tropical rain forest
deciduous forest
coniferous forest
tundra
ocean
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What biome do we live in?
Have you lived in another biome?
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Levels of Organization
all living and nonliving things interacting
within a certain area
group of similar cells organized to work together
group of different kinds of tissues working
together
large region with typical plants and animals that
includes several ecosystems
all organisms of the same kind living in one area
all interacting populations in an ecosystem
group of organs working together
smallest unit of living things
one individual living thing
cell
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• How do abiotic factors change as the seasons
  change?
• 2.How do biotic components change from summer to
  winter?

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Ecosystem
A unit, small or large, that consists of biotic
factors (plants, animals, micro-organisms
functioning together with abiotic factors
(precipitation, sunlight, soil).

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Ecosystems
do not necessarily have clear boundaries due to
biotic (living) and abiotic (non-living) 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
Predator Prey and competition
such as
Plants and animals dependent upon water,
minerals, temperature, light
also interact with abiotic factors in the
ecosystem
such as
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• How does temperature affect your life? (abiotic
  on biotic)
• 2. How do predators affect other living systems?
  (biotic on biotic)

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Building from smaller to larger, many ecosystems
can be connected to form an
Ecoregion.

• An Ecoregion is a unit of land or water that
  contains a definable group of species, natural
  communities, and environmental conditions. Dallas
  is a part of the Blackland Prairie ecoregion. You
  will be studying your ecoregion this year!

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There are 10-13 ecoregions in Texas
Can you find our Ecoregion? What color?
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Ecoregions together make up what??
The difference between ecoregion and biome is
one of scale. Biomes are larger and include
several ecoregions.