How can we help?

You can also find more resources in our Help Center.

20 terms

Ecology Math

STUDY
PLAY
Survivorship
lx
lx=
nx/nx; nx+1/nx
Age Specific Mortality
dx
dx=
nx-nx+1
Age Specific Mortality Rate
qx
qx=
dx/nx
Age Specific Life Expectancy
Lx
Lx=
(nx+nx+1)/2
Tx=
Sum of all Lx's
Total Years Alive in Future
Tx
Life Expectancy
ex
ex=
Tx/nx
Gross reproductive rate
Sum of all bx
Fecudnity Adjusted for by Survivorship
lxbx
Net Reproductive Rate
R0
R0=
sum of lxbx
Age Specific Survival Values
sx
sx=
1-qx
Reproductive Success
RS
RS=
(bx)probability