Effect of the Mediterranean crops in the airborne pollen spectrum

Martínez-Bracero, Moisés; Alcázar, Pilar; Velasco-Jiménez, M. J.; Galán, Carmen

doi:10.1007/s10453-019-09604-z

Cited by 10 publications

(2 citation statements)

References 33 publications

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“…Previous studies detected statistically significant differences between the oak annual pollen integral in the Eurosiberian region and those of the rest of the Iberian Peninsula [7]. Similar values were detected in the Northeast [52], while higher values were noted in the central part, where up to 66,000 pollen grains were registered in some years [53], and lower values were noted in the South [4,54]. Pollen production and dispersion is strongly modulated by a complex combination of biotic and environmental factors [12].…”

Section: Discussionsupporting

confidence: 54%

Pollen Production of Quercus in the North-Western Iberian Peninsula and Airborne Pollen Concentration Trends during the Last 27 Years

Fernández-González

González-Fernández

Ribeiro

et al. 2020

Forests

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Natural forests are considered a reservoir of great biological diversity constituting one of the most important ecosystems in Europe. Quercus study is essential to assess ecological conservation of forests, and also of economic importance for different industries. In addition, oak pollen can cause high sensitization rates of respiratory allergies in pollen-allergy sufferers. This study sought to know the pollen production of six oak species in the transitional area between the Eurosiberian and Mediterranean Bioclimatic Regions, and to assess the impact of climate change on airborne oak pollen concentrations. The study was conducted in Ourense (NW Spain) over the 1993–2019 period. A Lanzoni VPPS 2000 volumetric trap monitored airborne pollen. A pollen production study was carried out in ten trees randomly selected in several Quercus forest around the Ourense city. Oak pollen represented around 14% of annual total pollen registered in the atmosphere of Ourense, showing an increasing trend during the last decade. Pollen production of the six studied oak species follow the proportions 1:1:2:5:90:276 for Q. ilex, Q. faginea, Q. rubra, Q. suber, Q. pyrenaica, and Q. robur respectively. We detected a significant trend to the increase of the annual maximum temperature, whereas a decrease of the maximum and mean temperatures during three previous months to oak flowering. This could be related with the detected trend to a delay of the oak Main Pollen Season onset of 0.47 days per year. We also found significant trends to an increase of the annual pollen integral of 7.9% pollen grains per year, and the pollen peak concentration of 7.5% pollen grains per year. Quercus airborne pollen monitoring as well as the knowledge of the reproductive behavior of the main oak species, bring us an important support tool offering a promising bio-indicator to detect ecological variations induced by climate change.

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Section: Discussionsupporting

confidence: 54%

Pollen Production of Quercus in the North-Western Iberian Peninsula and Airborne Pollen Concentration Trends during the Last 27 Years

Fernández-González

González-Fernández

Ribeiro

et al. 2020

Forests

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“…Nevertheless, the Vitis vinifera L. SPIn registered by the Hirst trap during the study period was higher than that reported in Braga [44] or in previous studies in Cenlle [4]. The quantity of pollen in the present study was lower than that the observed in the Montilla-Moriles DO area (southern Spain) [39,45] or in San Michele all'Adige of Trento (Italy) [42]. The pollen peak registered during the studied years ranged from 28 pollen/m 3 on May 29 in 2015 to 54 pollen/m 3 on June 1 in 2019.…”

Section: Discussioncontrasting

confidence: 76%

Integrating Phenological, Aerobiological and Weather Data to Study the Local and Regional Flowering Dynamics of Four Grapevine Cultivars

et al. 2020

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Phenological, aerobiological, and weather data are useful tools to study local and regional flowering dynamics in crops with economic importance. The present study focuses on four autochthonous grapevine cultivars, namely, ‘Treixadura’, ‘Godello’, ‘Loureira’, and ‘Albariño’ (Vitis vinifera L.), which belong to the Designation of Origin Ribeiro area (located in northwestern Spain) from 2015–2019. The aims of the work were to (1) compare the airborne pollen concentration in the vineyard collected by two different traps, (2) analyze the influence of the main meteorological variables on cultivar phenology and pollen concentration, and (3) test the contribution of the air masses on pollen concentrations in the vineyard. Phenological development has been assessed twice weekly, according to the Biologische Bundesanstalt, Bundessortenamt und Chemische Industrie (BBCH) scale. Airborne pollen concentrations were monitored by using two traps during stage 6 (flowering), namely, a Hirst volumetric sampler and a Cour passive trap. The bioclimatic conditions affected the duration of flowering, ranging from 11 and 24 days. The highest seasonal pollen integral (SPIn) was registered in 2016 for the Hirst sampler, with 302 pollen, and in 2019 for the Cour trap, with 1,797,765 pollen/m2/day. The main variables affecting pollen concentrations were average temperature during the main pollen season, as well as, temperatures and dew points during the pre-peak period. The relationship between pollen data registered by both traps and the obtained harvest indicate that the Hirst trap may be more suitable for predicting a local production and that the Cour sampler is more appropriate for forecasting regional productions.

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First phenological and aerobiological assessment of olive orchards at the Northern limit of the Mediterranean bioclimatic area

et al. 2020

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Effect of the Mediterranean crops in the airborne pollen spectrum

Cited by 10 publications

References 33 publications

Pollen Production of Quercus in the North-Western Iberian Peninsula and Airborne Pollen Concentration Trends during the Last 27 Years

Pollen Production of Quercus in the North-Western Iberian Peninsula and Airborne Pollen Concentration Trends during the Last 27 Years

Integrating Phenological, Aerobiological and Weather Data to Study the Local and Regional Flowering Dynamics of Four Grapevine Cultivars

First phenological and aerobiological assessment of olive orchards at the Northern limit of the Mediterranean bioclimatic area

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