Exam #1 Flashcards
1st Step of Scientific Method
Observation
Challenges an organism faces
Weather, competition, finding food
Causation
the mechanism within the body causes the behavior to occur
Development
how the behavior changes across the lifespan of an individual
Function
why the behavior is an adaptation
Evolution
why the behavior exists and how it has changed across generations
Proximate Mechanisms
The process that leads to a behavior
Transect
Counting my measuring
Quadrants
set squares randomly to count different types and numbers of individuals
Mark and recapture
tagging an organism
Avg growth rate
dN/dT=rN
Population size
Nt=N0e^rt
Doubling time
T doube=ln(2)/r
Growth Rate
(N1/N0)
Population size
Nt=N0(N1/N0)^t
Carrying Capacity
K
Type I
High survivorship until older ages and then a rapid decrease
Type II
Relatively likely individuals will die from old age
Type III
Low survivorship when young increases at maturity
Life History Traits
adaptations for survivorship
Semelparous
one reproductive event followed by death
iteroparous
multiple reproductive events
R-selected species
mature rapidly, short lifespan
K-selected species
mature slowly, longer lifespan
