2004 intheusa censusinflsuggested5075km

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Unformatted text preview: of
 hazardous
technologies.”
 Organism
 •  Organismal
ecology
studies
how
an
organism’s
 structure,
physiology,
and
(for
animals)
behavior
 meet
environmental
challenges
 Environment
 Organism
 Environment
 Organism
 Environment
 Abiotic
(non‐living)
factors:
 • Temperature
 • Light
 • Water
 • Nutrients
 Abiotic
(non‐living)
factors:
 • Temperature
 • Light
 • Water
 • Nutrients
 Biotic
factors:

 Other
organisms

 (parasitoids,
predators,
competitors,
etc.)
 5
 4/17/09
 Dispersal
and
Distribution
 •  Dispersal
is
movement
of
individuals
away
from
 centers
of
high
population
density
or
from
their
 area
of
origin
 •  Dispersal
contributes
to
global
distribution
of
 organisms
 Fig. 52-6 Why
is
species
X
absent
 from
an
area?
 Yes
 Does
dispersal
 limit
its
 distribution?
 Area
inaccessible
 or
insufficient
time
 Does
behavior
 limit
its
 distribution?
 Yes
 Habitat
selection
 Do
biotic
factors
 (other
species)
 limit
its
 distribution?
 Yes
 No
 Predation,
parasitism,
 competition,
disease
 Do
abiotic
factors
 limit
its
 distribution?
 Chemical
 factors
 No
 No
 Water
 Oxygen
 Salinity
 pH
 Soil
nutrients,
etc.
 Tempe...
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