POPULATION DYNAMICS/ECOLOGY
EXAM 2 QUESTIONS WITH VERIFIED
ANSWERS
\.What is the size of the population determined by?- Population ecology
questions - ANSWERS-Census (counting every individual) and Estimates
(survey portions of populations and extrapolate)
\.Is the population changing like increasing or decreasing, if so, how? -
Population ecology questions - ANSWERS-Birth, death, immigration
(moving in), emigration (moving out) rates all per a unit of time
\.3 Characteristics of each individuals, populations, and communities? -
Population Characteristics - ANSWERS-Individuals-age, size, sex,
behavior, development, growth, feeding, reproduction, death.
Populations- age distribution, sex ratio, spatial distribution, density,
population growth, survivorship, demographics.
Communities- species diversity, species interaction, food webs, feeding
guilds, energy flow
\.Formula for Population Characteristics - ANSWERS-Nt+1=Nt+B-D+I-E
Nt=population size at the time (t)
, B=birth number
D=death number
I=immigrants
E=emigrants
\.Population dynamics- Population Growth Patterns - ANSWERS-ways in
which populations change in abundance over time
\.Types of Population Growth- Population Growth Patterns - ANSWERS-
Exponential growth, Logistic growth, population Fluctuation, and
Population Cycles
\.Exponential Growth- Population Growth Patterns - ANSWERS-
populations increase by a constant proportion at each point in time for
a limited time when conditions are favorable.
\.Logistic Growth- Population Growth Patterns - ANSWERS-when
populations reach a stable size or equilibrium that changes little over
time, by first increasing then fluctuating by a small amount around the
carrying capacity (K)
\.Population Fluctuations- Population Growth Patterns - ANSWERS-
erratic or deviations from a growth patter that is influenced by a variety
EXAM 2 QUESTIONS WITH VERIFIED
ANSWERS
\.What is the size of the population determined by?- Population ecology
questions - ANSWERS-Census (counting every individual) and Estimates
(survey portions of populations and extrapolate)
\.Is the population changing like increasing or decreasing, if so, how? -
Population ecology questions - ANSWERS-Birth, death, immigration
(moving in), emigration (moving out) rates all per a unit of time
\.3 Characteristics of each individuals, populations, and communities? -
Population Characteristics - ANSWERS-Individuals-age, size, sex,
behavior, development, growth, feeding, reproduction, death.
Populations- age distribution, sex ratio, spatial distribution, density,
population growth, survivorship, demographics.
Communities- species diversity, species interaction, food webs, feeding
guilds, energy flow
\.Formula for Population Characteristics - ANSWERS-Nt+1=Nt+B-D+I-E
Nt=population size at the time (t)
, B=birth number
D=death number
I=immigrants
E=emigrants
\.Population dynamics- Population Growth Patterns - ANSWERS-ways in
which populations change in abundance over time
\.Types of Population Growth- Population Growth Patterns - ANSWERS-
Exponential growth, Logistic growth, population Fluctuation, and
Population Cycles
\.Exponential Growth- Population Growth Patterns - ANSWERS-
populations increase by a constant proportion at each point in time for
a limited time when conditions are favorable.
\.Logistic Growth- Population Growth Patterns - ANSWERS-when
populations reach a stable size or equilibrium that changes little over
time, by first increasing then fluctuating by a small amount around the
carrying capacity (K)
\.Population Fluctuations- Population Growth Patterns - ANSWERS-
erratic or deviations from a growth patter that is influenced by a variety
