Parameter Meaning N of possible values Values Meaning
A Abundance 3 3000, 4000, 5000 Low, medium or high population size in GPNP
r
Overall yearly trend over 10 years
5 5 1.01, 1.018, 1.027, 1.034, 1.041 0.989, 0.978, 0.965, 0.95, 0.933 10%,20%,30%,40% or 50% total population increase in 10 years -10%,-20%,-30%,-40% or -50% total population increase in 10 years
Overall yearly trend over 20 years
5 5 1.005, 1.009, 1.013, 1.017, 1.025 0.995, 0.989, 0.982, 0.975, 0.966 10%,20%,30%,40% or 50% total population increase in 20 years 10%, 20%, 30%, 40% or 50% total population increase in 20 years
cvy Coefficient of variation of the trend between years 4 0.05, 0.1, 0.15, 0.2 Low, medium and high variability
cvs Coefficient of variation of the trend between sectors 4 0.05, 0.1, 0.15, 0.2 Low, medium and high variability
P Detection probability 3 0.4, 0.6, 0.8 Low, medium and high detectability
cvd Coefficient of variation for detection probability 3 0.1, 0.3, 0.5 Low, medium or high variability
Sector-selection (method to select the survey sectors)
3
“random each” “random first” “best” Sectors are selected randomly each year Sectors are selected randomly the first year Only the sectors with the highest abundance are selected
n Number of sectors used for the estimation 38 1 to 38