Shared Flashcard Set

Details

Chp 53 Vocab
population ecology
29
Biology
12th Grade
01/13/2009

Additional Biology Flashcards

 


 

Cards

Term
population ecology
Definition
the study of populations in relation to their environment
Term
population
Definition
a group of individuals of a single species living in the same general area
Term
density
Definition
the number of individuals per unit area or volume
Term
dispersion
Definition
the pattern of spacing among individuals within the boundaries of the population
Term
mark-recapture method
Definition
a process used to estimate the size of wildlife populations
Term
immigration
Definition
the influx of new individuals from other areas into a population
Term
emigration
Definition
the movement of individuals out of a population
Term
territoriality
Definition
the defense of a bounded physical space against encroachment by other individuals
Term
demography
Definition
the study of the vital statistics of populations and how they change over time
Term
life tables
Definition
age-specific summaries of the survival pattern on a population
Term
cohort
Definition
a group of individuals of the same age
Term
survivorship curve
Definition
a plot of the proportion or numbers in a cohort still alive at each age
Term
reproductive table (fertility schedule)
Definition
an age specific summary of the reproductive rates in a population
Term
big-bang reproduction (semelparity)
Definition
when an organism is extremely fertile and conceives many offspring at one time before dying or becoming infertile
Term
repeated reproduction (iteroparity)
Definition
annual reproduction of a moderate number of offspring
Term
zero population growth
Definition
occurs when the per capita birth and death rates are equal
Term
exponential population growth
Definition
population increase under ideal conditions (members of a population have access to abundant food and are free to reproduce at their physiological capacity
Term
carrying capacity (K)
Definition
the maximum population size that a particular environment can sustain
Term
logistical population growth
Definition
the per capita rate of increase approaches zero as the carrying capacity is reached
Term
K-selection
Definition
selection for life history traits that are sensitive to population density
Term
r-selection
Definition
selection for life history traits that maximize reproductive success in uncrowded environments
Term
density independent
Definition
a birth or death rate that does not change with population density
Term
density dependent
Definition
a death rate that rises as density rises, or birth rate that falls as density rises
Term
population dynamics
Definition
the complex interactions between biotic factors that cause variations in the size of populations
Term
metapopulation
Definition
various linked populations by immigration and emigration
Term
demographic transition
Definition
the movement from a high birth rate and high death rate to low birth rate and low death rate
Term
age structure
Definition
the relative number of individuals of each age in a population
Term
ecological foot print
Definition
summarizes the aggregate land and water area required by each person, city, or nation to produce all the resources it consumes and to absorb the waste it generates
Term
life history
Definition
the traits that affect an organism's schedule of reproduction and survival (birth rate)
Supporting users have an ad free experience!