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34 Cards in this Set

  • Front
  • Back
Large islands tend to be more species rich than small islands
Area effect
Islands near to the mainland tend to be more species rich than distant islands
Distance Effect
The mainland (in island biogeography theory)
Source Pool
The rate at which new species colonize an island
Immigration Rate
The rate at which species disappear from an island
Extinction Rate
The rate at which species (on an island currently in equilibrium) replace each other
Turnover rate
ecological succesion that comes from after a disturbance that creates new substrate. (Volcano, Glacier).
Primary Succession
Ecological succesion that comes after a disturbance that removes significant amount of biomass, but leaves the existing substrate.(forest fire, abandoned tilled cropland).
Secondary succesions
The first of the species to colonize a recently disturbed habitat
pioneer species
the late successional community that exists at or near equilibrium
climax community
Plotting the relatve abundance of each species in a community in order of decreasing abundance
Rank abundance graph
The number of species in a sample
Species richness
The uniformity of species relative abundance
Species Evenness
The number of species that are represented by only one individual in a sample
The number of species that are represented by exactly two individuals in a sample
Plotting the expected species richness against the number of individuals sampled
Rarefaction curve
The number of species per area or per volume
Species density
The act of searching for and obtaining food resources
The physical space that is occupied by an organism
Amount of food (or energy) consummed per unit time
Intake rate
In theory, an individual that is able to select habitat best suited for survival and reproduction
Ideal individual
The physical space that an individual actively defends
A theoretical circumstance where an individuals choose, and occupy, habitat of highest suitability
Ideal free distribution
A single essential nutrient or other resource that most limites an organisms growth
limiting resource
A simple model that describes the rate of an enzyme reaction relative to the concentration of some limiting substrate
Michaellis-Menten kinetics
THe set of points in resources availability along which reproductive rate exactly equals mortality rate
Zero net growth isocline
The per capita negative effect of a predator on it's victim population
Capture efficiency
The per capita effect of converting a single prey item on increasing the predator population
Conversion efficiency
A physical location that prey can go to escape predation
Rate of victim capture by a predator as a function of victim abundance
Functional response
Per capita growth rate of predator population as a function of victim abundance
Numerical response
Functional response is prey capture linearly correlated with prey abundance
Type I
Functional response is mostly correlated with prey abundance, but tapers off to an upper asymptote due to prey saturation
Type II
Functional response is limited by prey saturation, but begins with a sigmoidal shape due to inefficient prey capture at very low prey abundance ( such as due to prey switching or a lack of search image)
Type III