Scheifinger et al., 2003; Menzel et al., 2003) and increased growing degree days (above certain thresholds, e.g. 0 or 5◦C) in the mid and high northern latitudes..
Scheifinger et al., 2003; Menzel et al., 2003) and increased growing degree days (above certain thresholds, e.g. 0 or 5◦C) in the mid and high northern latitudes..