Properties of Populations Flashcards
Ramet
a module produced asexually by the genet
genet
individual produced by sexual reproduction
distribution
spatial location of a population (Random-varience is same as mean, independent of others. uniform-varience is less than mean, evenly distributed. clumped-varience greater than the mean, function as subpopulations)
geographic range
area that encompasses all of the individuals
abundance
the number of individuals of a species in a given area
density
size of a population in relation to a definite unit of space
age structure
proportion of individuals in a certain age group
stage structure
proportion of individuals in a particular stage
dispersal
living an area of birth or activity for another area
immigration
arrival of new individuals into a habitat or population
emigration
movement of part of a population permanently out of an area
migration
intentional directional usually seasonal movement of animals between two regions or habitats involves departure and return of the same individual; round trip
meta-population
a population broken into sets of subpopulations held together by dispersal or movements of individuals among them
sampling
quadrat- number of individuals per area, works well with non-motile species
Mark recapture
marked animals evenly disperse back into population. marks do not affect survival or recapture. no change in population size between captures( no immigration, emigration) marks are not lost
N=total population size M=# marked initially n= # captured in second effort R= #of captured in second effort that have a mark N/M= n/R N=Mn/R
