Artículo
Temporal and spatial patterns of airborne pollen dispersal in six salt marsh halophytes
Autor/es | Sanjosé, Israel
Nieva, Francisco J.J. Infante Izquierdo, M. Dolores Polo Ávila, Alejandro Sánchez-Gullón, Enrique Martínez Sagarra, Gloria Muñoz-Rodríguez, Adolfo F. Castillo Segura, Jesús Manuel ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Departamento | Universidad de Sevilla. Departamento de Biología Vegetal y Ecología |
Fecha de publicación | 2022 |
Fecha de depósito | 2022-10-07 |
Publicado en |
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Resumen | 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 ... 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. |
Cita | Sanjosé, I., Nieva, F.J.J., Infante Izquierdo, M.D., Polo Ávila, A., Sánchez-Gullón, E., Martínez Sagarra, G.,...,Castillo Segura, J.M. (2022). Temporal and spatial patterns of airborne pollen dispersal in six salt marsh halophytes. Review of Palaeobotany and Palynology, 302, 104662. https://doi.org/10.1016/j.revpalbo.2022.104662. |
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