Skip to main content

Table 1 Extrinsic and intrinsic variables considered in the analysis, and variables included in the IT-AICc models

From: Inter-annual variability of the effects of intrinsic and extrinsic drivers affecting West Nile virus vector Culex pipiens population dynamics in northeastern Italy

Variable

Description

Included in IT-AICc approacha

GMP

Density dependent variables measuring the saturation of the carrying capacity

Yes

DT.h

Length of daylight (hours)

Yes

DMI15d

De Martonne aridity index in 15 days prior to capture (mm/°C)

Yes

GDD15d

Growing degree days in 15 days prior to capture

Yes

NDVI15d

Maximum normalized difference vegetation index in 15 days prior to capture

Yes

PREC

Daily cumulative precipitation (mm)

Yes

PREC.avg15d

Average cumulative precipitation in 15 days prior to capture (mm)

No

PREC.k15d

Precipitation kurtosis in 15 days prior to capture (mm)

Yes

PREC.sd15d

Precipitation standard deviations in 15 days prior to capture (mm)

No

T.avg15d

Average temperature in 15 days prior to capture (°C)

No

T.k15d

Temperature kurtosis in 15 days prior to capture (°C)

Yes

T.sd15d

Temperature standard deviations in 15 days prior to capture (°C)

Yes

T.night

Average temperature recorded during the overnight capture period (18:00–6:00 h) (°C)

Yes

  1. aSome variables were excluded due to collinearity