However, our present results are hardly comparable with those observed in Douglas fir for bud flush, which was tested under a dozen different environmental conditions, differing in elevation, latitude, moisture, temperature, day length [ 26, 28].
Soil samples were analyzed from 11 sites that differ in elevation, parent material, drainage, slope and vegetation.
For example, sister clades generally differ in elevation (upland vs. lowland) within and between river basins.
On the basis of data obtained in 2007, we focused collections in 2009 at 2 sites at Ala-Archa, 5 km apart and differing in elevation by 100 m.
In general, farmed and wild salmon displayed similar growth reaction norm slopes between the mixed-strain treatment and the single-strain treatment, only differing in elevation (Table 3; Figure 4; Additional file 5).
This analysis identified some of the unique, temporally regulated DEGs described above, and additionally, genes that exhibited flat regression profiles that differed significantly in elevation between the species.
The entire experiment is replicated over three sites in north-central California which have similar relatively fertile clay loam soils, but differ moderately in elevation and climate (temperature and rainfall), and weed challenge (Table 1).
Lakes on the opposite sides of a single ridge may differ in surface elevation by as much as 60 m.
The two collecting sites differed around 290 m in elevation with similar vegetation.
Oceanic islands differ in age, size, elevation, substrate and ecology.
