Table 6.

Foraging events and equations used in the calculation of partial and cumulative indexes of selectivity for alfalfa at each separate scale and across scales of the grazing process.

Foraging scale	Foraging event	Partial index	Cumulative index
Scenario	Patches selected (Ps)
Patch	Feeding stations visited (FS)
Feeding station	Bites cropped (B)
Bite	Dry matter intake (I)

Partial selectivity indexes expressed the ratio of the proportion of foraging events on alfalfa at a focal scale and those at the next larger scale of the grazing process. Cumulative selectivity indexes showed a progressive integration of the proportion of foraging events on alfalfa against the proportion of alfalfa patches offered.