Download all the living organisms and non-living factors found in one place

Notes 10.1
Chapter 18 Section 1 & 2 pg. 359-365


Study of the relationships of animals, plants,
and their environment.
Ecology translates to "study of homes“

Interdependence:
organisms rely on the
interaction with their
environment for survival
 Living and non-living factors

A small change in the
ecosystem can affect all
things it is related to
MOST INCLUSIVE
Biosphere (the portion of Earth and atmosphere that
support life)
Ecosystem (all the living organisms and non-living
factors found in one place)
Community (all the living organisms in one place)
Population (all the members of one species in one place)
Organism (single individual of a species)
LEAST INCLUSIVE

Two Types of Environmental Factors
 Biotic – living parts of
an environment
▪ Plants, bacteria, animals
 Abiotic – Non-living
parts of an environment
▪ Temperature, rocks, light

Organisms respond to biotic
and abiotic factors
 Tolerance curve: a graph showing
the range of conditions an
organism can survive
 Acclimation: organisms adjust
their tolerance
▪ Ex. Goldfish raised at different
temps. have different tolerance
curves.

Conformers vs. Regulators
 Conformers: don’t regulate
internal conditions
▪ Allow internal conditions to
change with the environment
 Regulators: use energy to
maintain stable internal
conditions

Dormancy
 hide and reduce activity
for the duration of the
condition

Migration(seasonal)
 Move to favorable
conditions

Niche - the role of an organism (usually based
on what they eat)
 Generalist: species with a broad niche and wide
tolerance curve
 Specialist: species with a narrow niche and a
narrow tolerance curve