Lesson 5 Flashcards
Gamma diversity?
Patterns of species diversity and composition are driven by dispersal across the landscape.
Beta diversity?
Local and regional scales are connected by turnover, which is the difference in species diversity and composition from one community type to another across the landscape.
Alpha diversity?
Mean species diversity in a site at a local scale.
Competition?
A non trophic interaction in which individuals in the same species (intraspecific) or different species (interspecific) are harmed by their shared use of a resource that limits their ability to grow, reproduce, or survive.
Intraspecific competition?
Competition between individuals of the same species (which leads to density-dependent population growth and sets K).
Interspecific competition?
Competition between individuals of different species.
Exploitation competition?
Reducing access to a resource by reducing the availability of that resource?
Interference competition?
Reducing access to a resource by directly interfering with a competitor.
Recourse?
Components of the environment that are required by species.
Competitive exclusion principle?
Two species that use a limiting resource in the same way cannot coexist indefinitely.
Fundamental niche?
The full set of recourses plus other biotic and abiotic requirements of a species to grow, survive, and reproduced.
Realized niche.
The restrictive set of recourses or conditions that are required for survival and reproduction.
Resource partitioning?
Using the same recourse in different ways.
Character displacement?
When you change a specific phenotype through time in response to competition.
If the isoclines don’t cross, then you have?
Competitive exclusion
