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Chapter 26: Community Equality (Concepts (community (group of species that…
Chapter 26: Community Equality
Concepts
community
group of species that occur together at the same time and place
climax community
disturbed patch undergoes succession
succession
predictable sequence of changes
community restoration
reintroducing species into a habitat
habitat loss
habitat fragmentation
Diversity
diversity and scale
larger scale = more diverse
smaller scale = less diverse
species area relationship
formula
S=cA^z
relationship between area and species richenes
species abundance distribution
Predator-Prey Interactions
one predator, one prey
primary producer plant is attacked by predator
prey dependent
predator's functional response is dependent on the amount of prey
zero growth isocline
line indicating population stability
paradox enrichment
improving conditions for prey
may lead to overexploit the prey
both species will be lost
predator selection among multiple prey
optimal foraging theory
examine the interactions between the factors to understand why herbivores eat plants
optimal diet model
produced by optimal foraging theory
four different predictions
competition between species
when species compete for the same resources
exploitation competion
when organisms eat shared resources
interference competition
one organism restricts another
Beneficial Interactions Between Species
mutualistic relationship
when both organisms benefit
Metapopulations in Patchy Environments
metapopulation
several populations are interconnected by migration and gene flow
Interconnectedness of Species: Food Chains and Food Webs
food chain
direct line of consumption
food web
intercorrelation of consumption relationships
energy flow web
how energy flows through the community