Skip to main content
. 2013 May 6;8(5):e62407. doi: 10.1371/journal.pone.0062407

Table 4. Parameters and values used in models on the three spatial scales.

Parameter Meaning Value of range Justification
Local Scale
σu, σv Standard deviation of dispersal east-west, north-south 21.1 sq-m day−1 , 10.6 sq-m day−1 Median value taken from [50] with a phototactic response to the rising and the setting of the sun
Field Scale
σu, σv Standard deviation of dispersal east-west, north-south 211 sq-m day−1 , 106 sq-m day−1 Ten times local scale value for qualitative fit
u,v Wind-shift distance east-west, north-south 104–1088 m day−1 Found by Equation 3 with parameters f, w, L fitted by genetic algorithm from the landscape scale (below)
Landscape Scale
L Length of time mated females fly 10.2 min day−1 [53]
f Dimensionless scaling factor 1 Fitted by genetic algorithm
wu, wv Half-hourly mean wind speed east-westnorth-south 0.2–1.8 m s−1 Recorded at release site, but only applied when between 6.30 am and 5∶00 pm and <2.2 m s−1 as fitted by genetic algorithm