Morphological traits influencing aerodynamic factors and the long-range transport of Alnus acuminata Kunth. pollen through the atmosphere
Background and aims: This study aims to characterize the size distribution of Alnus acuminata pollen grains as emitted into the air near their source of origin in the southernmost South American Yungas, and to provide estimates of their settling velocity.M&M: The samples were collected on Au...
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| Formato: | Artículo revista |
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Sociedad Argentina de Botánica
2025
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| Acceso en línea: | https://revistas.unc.edu.ar/index.php/BSAB/article/view/49834 |
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I10-R325-article-498342025-12-23T14:44:10Z Morphological traits influencing aerodynamic factors and the long-range transport of Alnus acuminata Kunth. pollen through the atmosphere Rasgos morfológicos que influyen en los factores aerodinámicos y el transporte de larga distancia del polen de Alnus acuminata Kunth. a través de la atmósfera Pérez, Claudio Pérez, Claudio Fabián Reader, María M. Torres, Gonzalo R. Vazquez, Samuel M. Lupo, Liliana C. airborne pollen Argentina Montane Forest size distribution Yungas Argentina Bosque Montano Distribución de tamaño polen anemófilo Yungas Background and aims: This study aims to characterize the size distribution of Alnus acuminata pollen grains as emitted into the air near their source of origin in the southernmost South American Yungas, and to provide estimates of their settling velocity.M&M: The samples were collected on August 22, 2023, using a Hirst-type spore trap located 1.6 m above the ground, operated at a constant suction volume of 0.06 m3 h-1. The number of apertures, as well as the polar and equatorial diameters, of 2348 Alnus pollen grains were counted and measured on even hours for each slide using an optical microscope at 1000x final magnification. Results: Alnus pollen grains have 3 to 6 pores, with the most common numbers being 4 pores (37 %) and 5 pores (61 %). The polar diameters range from 12.5 to 20 μm, depending on the time of occurrence. The equatorial diameter varied from 17.5 to 28.5 μm), with no size differences between 4- and 5-pored grains. The estimated settling velocity ranged from 0.59 to 1.48 cm s-1 thus; A. acuminata is dispersed by turbulence similarly to particles with no inertia Introduccion y objetivos: Este estudio busca caracterizar la distribución del tamaño de los granos de polen de Alnus acuminata al ser liberados a la atmósfera, en cercanías de su fuente de origen en las yungas más australes de Sudamérica, y proporcionar estimaciones de su velocidad de sedimentación. M&M: Las muestras se recolectaron el 22 de agosto de 2023 con una trampa tipo Hirst ubicada a 1,6 m del suelo, operada a un volumen de succión constante de 0,06 m³ h⁻¹. Se contaron y midieron el número de aperturas y los diámetros polar o ecuatorial de 2348 granos de polen de Alnus en horas pares de la muestra diaria, con un microscopio óptico y un aumento final de 1000x. Resultados: Los granos de polen de Alnus presentan de 3 a 6 poros, siendo los más comunes aquellos con 4 (37 %) y 5 poros (61 %). Los diámetros polares oscilan entre 12,5 y 20 μm, en función de la hora de ocurrencia durante el día. El diámetro ecuatorial varió entre 17,5 y 28,5 µm, sin diferencias de tamaño entre los granos de 4 y 5 poros. La velocidad estimada de sedimentación osciló entre 0,59 y 1,48 cm s⁻¹, por lo que se puede inferir que A. acuminata se dispersa por turbulencia de manera similar a las partículas sin inercia. Sociedad Argentina de Botánica 2025-12-31 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/html https://revistas.unc.edu.ar/index.php/BSAB/article/view/49834 10.31055/1851.2372.v60.n4.49834 Boletín de la Sociedad Argentina de Botánica (Journal of the Argentine Botanical Society; Vol. 60 No. 4 (2025): December Boletín de la Sociedad Argentina de Botánica; Vol. 60 Núm. 4 (2025): Diciembre Boletín de la Sociedad Argentina de Botánica; v. 60 n. 4 (2025): Diciembre 1851-2372 0373-580X 10.31055/1851.2372.v60.n4 eng https://revistas.unc.edu.ar/index.php/BSAB/article/view/49834/50884 https://revistas.unc.edu.ar/index.php/BSAB/article/view/49834/50885 Derechos de autor 2025 Claudio Pérez, María M. Reader, Gonzalo R. Torres, Samuel M. Vazquez, Liliana C. Lupo https://creativecommons.org/licenses/by-nc-sa/4.0 |
| institution |
Universidad Nacional de Córdoba |
| institution_str |
I-10 |
| repository_str |
R-325 |
| container_title_str |
Boletín de la Sociedad Argentina de Botánica |
| language |
Inglés |
| format |
Artículo revista |
| topic |
airborne pollen Argentina Montane Forest size distribution Yungas Argentina Bosque Montano Distribución de tamaño polen anemófilo Yungas |
| spellingShingle |
airborne pollen Argentina Montane Forest size distribution Yungas Argentina Bosque Montano Distribución de tamaño polen anemófilo Yungas Pérez, Claudio Pérez, Claudio Fabián Reader, María M. Torres, Gonzalo R. Vazquez, Samuel M. Lupo, Liliana C. Morphological traits influencing aerodynamic factors and the long-range transport of Alnus acuminata Kunth. pollen through the atmosphere |
| topic_facet |
airborne pollen Argentina Montane Forest size distribution Yungas Argentina Bosque Montano Distribución de tamaño polen anemófilo Yungas |
| author |
Pérez, Claudio Pérez, Claudio Fabián Reader, María M. Torres, Gonzalo R. Vazquez, Samuel M. Lupo, Liliana C. |
| author_facet |
Pérez, Claudio Pérez, Claudio Fabián Reader, María M. Torres, Gonzalo R. Vazquez, Samuel M. Lupo, Liliana C. |
| author_sort |
Pérez, Claudio |
| title |
Morphological traits influencing aerodynamic factors and the long-range transport of Alnus acuminata Kunth. pollen through the atmosphere |
| title_short |
Morphological traits influencing aerodynamic factors and the long-range transport of Alnus acuminata Kunth. pollen through the atmosphere |
| title_full |
Morphological traits influencing aerodynamic factors and the long-range transport of Alnus acuminata Kunth. pollen through the atmosphere |
| title_fullStr |
Morphological traits influencing aerodynamic factors and the long-range transport of Alnus acuminata Kunth. pollen through the atmosphere |
| title_full_unstemmed |
Morphological traits influencing aerodynamic factors and the long-range transport of Alnus acuminata Kunth. pollen through the atmosphere |
| title_sort |
morphological traits influencing aerodynamic factors and the long-range transport of alnus acuminata kunth. pollen through the atmosphere |
| description |
Background and aims: This study aims to characterize the size distribution of Alnus acuminata pollen grains as emitted into the air near their source of origin in the southernmost South American Yungas, and to provide estimates of their settling velocity.M&M: The samples were collected on August 22, 2023, using a Hirst-type spore trap located 1.6 m above the ground, operated at a constant suction volume of 0.06 m3 h-1. The number of apertures, as well as the polar and equatorial diameters, of 2348 Alnus pollen grains were counted and measured on even hours for each slide using an optical microscope at 1000x final magnification. Results: Alnus pollen grains have 3 to 6 pores, with the most common numbers being 4 pores (37 %) and 5 pores (61 %). The polar diameters range from 12.5 to 20 μm, depending on the time of occurrence. The equatorial diameter varied from 17.5 to 28.5 μm), with no size differences between 4- and 5-pored grains. The estimated settling velocity ranged from 0.59 to 1.48 cm s-1 thus; A. acuminata is dispersed by turbulence similarly to particles with no inertia |
| publisher |
Sociedad Argentina de Botánica |
| publishDate |
2025 |
| url |
https://revistas.unc.edu.ar/index.php/BSAB/article/view/49834 |
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| first_indexed |
2025-12-27T05:32:18Z |
| last_indexed |
2025-12-27T05:32:18Z |
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