Oecologia

, Volume 57, Issue 1, pp 196–199

A direct measure of pollinator effectiveness

Authors

  • E. Eugene SpearsJr.
    • Department of ZoologyUniversity of Florida
Original Papers

DOI: 10.1007/BF00379581

Cite this article as:
Spears, E.E. Oecologia (1983) 57: 196. doi:10.1007/BF00379581

Summary

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

Pi=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)

Copyright information

© Springer-Verlag 1983