The role of ecological variation in driving divergence of sexual and non-sexual traits in the red-backed fairy-wren (Malurus melanocephalus)

Table 2 The 21 predictor variables included in this study

Variable number	Data source	Variable name	Variable interpretation
1		Bio1	Mean temperature
2		Bio2	Diurnal temperature range
3		Bio4	Temperature seasonality
4		Bio5	Maximum temperature of warmest month
5		Bio6	Minimum temperature of coldest month
6	WorldClim database	Bio12	Annual precipitation
7		Bio15	Precipitation seasonality
8		Bio16	Wet season precipitation
9		Bio17	Dry season precipitation
10		Bio18	Precipitation of warmest quarter
11		Bio19	Precipitation of coldest quarter
12		NDVImax	Maximum vegetation production
13	MODIS satellite spectroradiometer	NDVImean	Mean vegetation production
14		NDVIsd	Vegetation seasonality
15	QuickScat active radar scatterometer	Qscatmean	Mean surface moisture
16		Qscatsd	Surface moisture seasonality
17	Shuttle Radar Topography Mission	Elevation
18	MODIS satellite spectroradiometer	Percent tree cover
19		Geographic distance
20	GPS	Carpentarian barrier
21		Eastern contact zone

We considered the influence of 18 environmental variables, geographic distance, the Carpentarian Barrier, and the eastern contact zone on phenotypic variation. Variable numbers are referred to in Table 1.

ISSN: 2730-7182