Introducing
© 2004 Plano ISD, Plano, TX
Ecology
the study of the relationships
between biotic and abiotic factors
in environments
eco
(G) root
log, -o, y
ecoclimate
ecosystem
ecotourism
© 2004 Plano ISD, Plano, TX
home, abode
(G) suffix
study of
epidemiology
climatology
zoology
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
© 2004 Plano ISD, Plano, TX
Bio
Biotic Factors
include plants, animals, fungi,
microorganisms
bio(s), bio(t)
(G) root
biotechnology
biomechanics
biostatistics
biofeedback
biography
biosphere
biology
biotic
© 2004 Plano ISD, Plano, TX
life
Examples of Biotic
Factors
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A
Abiotic Factors
include air, water, soil, temperature,
wind, source of energy (usually sun)
a, an
(G) prefix
abiotic
amusia
amoral
atoxic
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not, without
Examples of Abiotic
Factors
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Examples of Ecosystems
Mountains
Coral
Arizona
ReefinDesert
inColorado
Belize
© 2004 Plano ISD, Plano, TX
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
© 2004 Plano ISD, Plano, TX
Biotic Factors
interact with each
other in complex such as
ways
also interact with
abiotic factors in
the ecosystem
© 2004 Plano ISD, Plano, TX
parasitism
mutualism
competition
dependent upon
water, minerals,
temperature, light
© 2004 Plano ISD, Plano, TX
Biome
a major regional or global biotic
community, a super ecosystem,
defined chiefly by the dominant
forms of plant life and the
prevailing climate
© 2004 Plano ISD, Plano, TX
Major Biomes of the World
desert
grassland
tropical rain forest
deciduous forest
coniferous forest
tundra
ocean
© 2004 Plano ISD, Plano, TX
Levels of Organization
all
one
all
smallest
large
group
interacting
organisms
living
individual
region
of
unit
and
populations
of
similar
with
living
different
nonliving
of
organs
the
living
typical
thing
same
cellsin
an
organized
kind
plants
kinds
working
ecosystem
things
living
and
of to
in
work
animals
interacting
one
together
tissues
together
area
that
within
includes
workinga
certain
together
several
area
ecosystems
cell
© 2004 Plano ISD, Plano, TX
Video

http://www.youtube.com/watch?v=izRvPaAWgyw

http://www.youtube.com/watch?v=hIy0ZlyPPDg
© 2004 Plano ISD, Plano, TX
Questions
1)
What is ecology?
2)
What is the difference between biotic and abiotic
factors? Give some examples of both
3)
Give some examples of ecosystems. How often can
they change and why?
4)
Draw an illustration of the levels of organization from
a cell all the way up to a biome.
5)
How do biomes get there name, and what role do
abiotic factors play in this?
© 2004 Plano ISD, Plano, TX