Download 3. Symbiosis - Van Buren Public Schools

Ecosystem Components and
Interactions
Ecosystem Components
• Biotic factors:
• Abiotic factors:
Ecosystem Components
• Biotic factors:
– Living components
– Examples: Plants,
animals, fungi,
bacteria
• Abiotic factors:
– Non-living
components
– Examples: Rocks,
water, air
temperature, nutrients
Ecosystem Components
• Habitat
– Area where an
organism lives
– Example: The
African Savannah
Ecosystem Components
• Niche
– ALL of the physical
and biological
conditions the
organism needs
– The way the
organism interacts
with and uses its
habitat
Community Interactions
• 1. Competition:
– Occurs when organisms attempt to use the same
resources in the same place at the same time
– Only occurs when resources are limited!
https://www.youtube.com/watch?v
=FFEzp2cjkmw
Community Interactions
• 2. Predation:
– Occurs when one organism captures and eats
another.
http://www.youtube.com/w
atch?v=zbwrtWX0nx0
Community Interactions
• 3. Symbiosis:
– Relationship in which two species live closely
together and directly interact.
– Four types…Can be good or bad…
https://www.yo
utube.com/wat
ch?v=zSmL2F1t
81Q
Types of Symbiosis
• A. Mutualism:
– Type of symbiosis
– Both species benefit
– Examples:
• Cleaner fish + sharks
• Bees and flowers
http://www.youtube.com/w
atch?v=Qqa0OPbdvjw
Types of Symbiosis
• B. Commensalism:
– Type of symbiosis
– One species benefits, the other is neither helped
nor harmed
Types of Symbiosis
• C. Amensalism:
– Type of symbiosis
– One species is harmed,
the other is neither
helped nor harmed
– Example: Mold that
produces a substance
that kills bacteria but
does nothing for the
mold
Types of Symbiosis
• D. Parasitism:
– Type of symbiosis
– One species benefits by living in or on another,
and the other species is harmed.
https://www.youtube.c
om/watch?v=327bwMQIY&feature=youtu.be
https://www.youtube.com
/watch?v=lGSUU3E9ZoM
http://www.youtube.co
m/watch?v=vMGLWyNcAs
Because parasites are so interesting!
• A human perspective…
https://www.youtube.com/watch?v=PV4rowSN
_AQ