Original Papers

Oecologia

, Volume 57, Issue 1, pp 196-199

First online:

A direct measure of pollinator effectiveness

  • E. Eugene SpearsJr.Affiliated withDepartment of Zoology, University of Florida

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Summary

A direct measure of pollinator effectiveness, relying on seed set, is proposed, where:
$$PE_i = \frac{{(P_i - {\text{Z}})}}{{({\text{U}} - {\text{Z}})}}$$

P i =mean number of seeds set/flower by a plant population receiving a single visit from species i

Z=mean number of seeds set/flower by a population receiving no visitation.

U=mean number of seeds set/flower by a population receiving unrestrained visitation.

The utility and limitations of the proposed measure are discussed and exemplified with a population of Ipomoea trichocarpa (Convoculaceae)