Clicker 1 - A
Resource Partitioning (niche differentiation) – The evolution of traits that reduce
niche overlap and competition.
When niches of 2 or more species overlap = asymmetrical competition, and the
stronger competitor will drive the weaker one to extinction.
Co-existence is possible if the niches don’t overlap completely. The weaker
competitors will move to only use none overlapping resources. The realized niche of
the weaker species becomes smaller.
The fundamental niche is the combination of resources, areas that can be used, and
the conditions tolerated in the absence of competitors. This is the ideal life. Where
as the realized niche is the portion of resources, area and conditions that you can
Clicker 2 – B
If Species A can only colonize if species B is absent – species B is outcompeting
species A and reduces the niche of species A.
- Resource partitioning allows adjacent living when species cannot coexist.
A species that has a better ability to compete for a resource/space might not be
good at a different trait – Fitness tradeoff
Clicker 3 – C
2 very similar species can avoid competitive exclusion principle by character
CompetitionResource portioning/niche differentiationCharacter displacement
When different species are in the same environment, selective pressures cause