Chapter One Flashcards
Community
A group of species of that occur together in a space and time
Clements views
Plants should be study as community’s
Climax community (everything works together, remains stable and balances around each-other)
Gleason’s views
Community’s don’t form bonded units and work individually based on there environmentally needs
Competitive exclusion principle
Two species competing for the same limiting resource in the same way could not co exist
Niche theory
The environmental space that a species can occupy
Competitive exclusion principle
Two species cannot coexist on one limiting resource
Fundamental niche
Parts that a species could occupy in the absence of other species
Realized niche
Parts of the environment that a species actually occupies in the presence of other species
Ecological guild
Co occurring species that use the same resource
Limiting similarity
Differences between competing species that allow them to coexist
Processes in ecology
Selection
Drift
Dispersal
Speciation
Patterns in ecology
Evolution
A change in allele frequencies
allele frequency’
Proportion of a specific allele relative to the total number of allele in a population
Allele
A different form of the same gene locus
