POPULATION STRUCTURE AND DYNAMICS Flashcards
-interbreeding group of organism of the same species
within a restricted area.
POPULATION
-study of vital statistics of a population
demography
population structure
- size
- density
- population dispersion pattern
- age structure
-number of individuals
Population Size
-number of individuals per unit area
- Population Density
two aspects of population desnity
- crude density
- ecological density
Refers to the number of individuals per total area
crude density
-arrangement of individuals in terms of space
population dispersion pattern
three major types of pdp
uniform, clumped, random
-determined by distinguishing the age of the
population
age structure
3 Age Groups of Population
- Pre-reproductive
- Reproductive
- Post-reproductive
-the rate by which new individuals are
added/born to the population by the process of
reproduction
-one of the key factors in determining the
increase, decrease of population
- Natality rate
strategies of reproduction
k-selected strategy (produce less; better survival)
r-selected strategy (produce a lot; most offspring dies)
-number of individuals at various ages in a population
- Survivorship Rate
types of Survivorship curves
concave (several die young)
convex (more young grows old)
stair-step (survival rate undergoes sharp changes)
