title: How accessible are receptive megastrobili to pollen? the example of jack pine (Pinus banksiana).
abstract: We examined the effects of wind speeds on pollen capture by megastrobili of jack pine (Pinus banksiana). We found that, when wind speed increased from 1.3 to 7.5 m/s, the relative capture efficiency (E(r)) did not change significantly (P ≤ 0.206) and remained below 12%. However, total capture rates increased linearly with wind speed and atmospheric pollen density. Because theoretical models of capture efficiency predict the E(r) to increase to ∼80% asymptotically, our findings suggest that receptive megastrobili are equally adept at capturing pollen at all naturally occurring wind speeds.
authors.affiliation: Department of Environmental Biology, University of Guelph, Guelph, Ontario N1G 2W1, Canada.
authors.forename: A M
authors.initials: AM
authors.lastname: Roussy
authors.forename: P G
authors.initials: PG
authors.lastname: Kevan