Ecology test 2 Flashcards
Type 1 survivor ship strategy
low odds of death in early life. Dies of age-related casues
Type 2 survivor ship strategy
constant rate of death, could be from predation
Type 3 survivor ship strategy
High death rate in early years, but good survival in the later years
Monoculture/monocropping
farming, making a one species ecosystem
age distribution
shows portion of population in pre-repro and post-repro ages
Standard diviation
measure of how spread out a data set is
Standard error of the mean
true mean is 65% likely to be in that distance from sample mean
95% confidence intervals
SE of mean x 2
Clumped distribution
members of a species living close together
uniform distribution
members of a group are repelled by each other (territorialism)
black footed ferrets
driven to the brink of extinction by farming
Tasmanian devils
lack diversity, facial cancer
Mark recapture conditions
equal chance of catching all pop members.