Living at the edge: biogeographic patterns of habitat segregation conform to speciation by niche expansion in Anopheles gambiae

Table 1 Eco-geographical variables selected for the ENFA

No.	Class	Code	Description	Source
1	Climate	RAIN	Mean annual rainfall	ASECNA
2	Climate	SUN	Mean annual solar radiation	ASECNA
3	Climate	EVAPO	Mean annual evapotranspiration	ASECNA
4	Climate	TEMP	Mean annual temperature	ASECNA
5	Land use	OPEN	Frequency of cells without tree cover	BNDT
6	Land use	CROP	Frequency of cells with annual crops	BNDT
7	Land use	FARM	Frequency of cells with farmland other than crops	BNDT
8	Land use	SHRUB	Frequency of cells with shrub cover	BNDT
9	Land use	FOREST	Frequency of cells with forested areas	BNDT
10	Topography	POPPL	Minimum distance from populated places	BNDT
11	Topography	ROAD	Minimum distance from roads	BNDT
12	Topography	HYDRO	Minimum distance from hydrological features	BNDT
13	Topography	ALT	Mean altitude	BNDT
14	Topography	SLOPE	Mean slope	BNDT
15	Topography	ASPECT	Mean aspect	BNDT

Characteristics of the environmental descriptors used in the Ecological Niche Factor Analysis.

ISSN: 1472-6785