RT Journal Article
T1 Temporal and spatial patterns of airborne pollen dispersal in six salt marsh halophytes
A1 San José Jiménez, Israel
A1 Jiménez Nieva, Francisco Javier
A1 Infante Izquierdo, María Dolores
A1 Polo Ávila, Alejandro
A1 Sánchez Gullón, Enrique
A1 Martínez Sagarra, Gloria
A1 Muñoz Rodríguez, Adolfo Francisco
A1 Castillo Segura, Jesus Manuel
AB Pollination is a key process in the life cycle of most plant species, but very little is known about airborne pollen dispersal in salt marsh anemophilous halophytes. We analyzed the temporal and spatial dynamics of airborne pollen dispersal, using portable volumetric pollen traps, for six anemophilous Chenopodiaceae halophytic species in tidal salt marshes. In addition, we studied the effects of air temperature and wind speed on airborne pollen dispersal. Our study shows high levels of temporal and spatial constraint on airborne pollen dispersal. We recorded the lowest airborne pollen concentrations at air temperatures lower than 22 °C and wind speeds higher than 6 m s−1. These environmental conditions set up a narrow temporal pollination window during morning hours. We also recorded severe spatial limitation for pollen dispersal in three of the six halophytes studied, which presented airborne pollen concentrations that were 9 to 53 times smaller only 5 m away from source populations than within those populations. These results show that even related species colonizing the same ecosystem may show contrasted airborne pollen spatial dispersal dynamics that depend on several environmental factors. This should be taken into account for estimates of vegetation composition based on pollen production in aerobiological and paleopalinological studies. The restricted airborne pollen dispersal recorded would promote geitonogamy and limit interpopulation genetic exchange to the dispersal of their hydrochorous fruits.
PB Elsevier
SN 0034-6667
SN 1879-0615 (electrónico)
YR 2022
FD 2022
LK https://hdl.handle.net/10272/21683
UL https://hdl.handle.net/10272/21683
LA eng
NO Sanjosé, I., Nieva, F. J. J., Infante-Izquierdo, M. D., Polo-Ávila, A., Sánchez-Gullón, E., Martínez-Sagarra, G., Muñoz-Rodríguez, A. F., & Castillo, J. M. (2022). Temporal and spatial patterns of airborne pollen dispersal in six salt marsh halophytes. In Review of Palaeobotany and Palynology (Vol. 302, p. 104662). Elsevier BV. https://doi.org/10.1016/j.revpalbo.2022.104662
NO The authors thank the Directorate of the Natural Parks forsupporting field work conducted in this study. María Dolores Infante-Izquierdo thanks Ministerio de Educación, Cultura y Deporte (Spain)for a predoctoral fellowship (FPU-2015).
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026