Chapter 14 Interspecific Competition

interspecific competition

more than 1 species

what are the types of interspecific competition?

-mutualism

-parasite/host

-predator/prey

-competition

What is the major force driving species divergent and specialization?

Interspecific comp.

exploitation

occurs when sp. indirectly interacts with one another but affect the availability of shared resources

interference

results when sp directly interact and prevent others from occupying a habitat or access resources within it

what are the 4 possible outcomes of interspecific comp.?

-sp1 will win

-sp2 will win

-uncertainty

-coexistence

Two reasons for coexistence?

• intraspecific dynamics have a much greater effect than the interspecific dynamics

• alpha and beta are really low (not at a big competition)

what is the limiting nutrient for diatoms?

silica

who came up with the competitive exclusion principle?

Gause’s Law

What is Gause’s Law: competitive exclusion principle?

“complete competitors” cannot coexist

complete competitors

two sp that live in the same place and have exactly the same ecological requirements

fundamental niche

full range of conditions and resources under which a sp. can survive and reproduce

realized niche

portion of the fundamental niche that the sp actually exploits

resource partitioning

similar sp coexist by dividing available resources

character displacement

a shift in a niche involving some character like morphology, behavior, or physiology