Temporal and spatial distribution of atmospheric Poaceae pollen in Catalonia (NE Spain) in 1996–2001

Latorre, Fabiana; Belmonte, Jordina

doi:10.1080/00173130410019064

Cited by 20 publications

(15 citation statements)

References 11 publications

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“…The total annual concentrations of Poaceae pollen recorded in the sites studied of the Madrid Aerobiology Network (Madrid and Aranjuez) and of the Castilla-La Mancha Aerobiology Network (Toledo) are similar to those obtained in other cities of the Iberian Peninsula such as Badajoz and Ciudad Real among others, but higher than those obtained in Catalonia and lower than those recorded in Galicia (Subiza et al 1998;Fernández-González et al 1999;Latorre and Belmonte 2004;Jato et al 2009). Toledo has the highest total annual values of grass pollen, probably due to the fact that it is surrounded by countryside, with farmlands with a predominance of cereal crops, as well as natural vegetation.…”

Section: Discussionsupporting

confidence: 75%

Poaceae pollen in the atmosphere of Aranjuez, Madrid and Toledo (central Spain)

et al. 2010

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The main aim of this work is to study the aerobiological behaviour of Poaceae pollen in three areas of central Spain (Aranjuez, Madrid and Toledo), all of which are similar from a geographical, climatic and biogeographical point of view, and they are located nearby one another. The samplings were carried out over a period of 4 years (2005)(2006)(2007)(2008) using Hirst-type spore traps. Grass pollen is responsible for most spring allergic reactions in the pollensensitive population in central Spain, and they are very abundant in the atmosphere of this part of Iberian Peninsula. The average amount of this pollen type, as a percentage of the annual total pollen amount, is 7.4% in Aranjuez, 9.2% in Madrid and 11.3% in Toledo. Poaceae pollen is present in the atmosphere over a long period of time (FebruaryOctober), and its maximum concentrations are detected during May and June (weeks 16-25). The city of Toledo has the highest annual concentrations of grass pollen (average 5,797 grains) with a great number of days exceeding the allergy thresholds proposed by the Spanish Aerobiology Network (REA). Madrid and Aranjuez present similar annual concentrations of grass pollen with values of 2,961 grains and 2,751 grains, respectively. The correlation analysis between the daily levels of grass pollen and meteorological variables of temperature and rainfall show a significant correlation, positive with temperature (maximum, mean and minimum) and negative with rainfall.

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Section: Discussionsupporting

confidence: 75%

Poaceae pollen in the atmosphere of Aranjuez, Madrid and Toledo (central Spain)

et al. 2010

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“…As in Toledo, Poaceae pollen in these areas comes mostly from pastureland, crops and ruderal vegetation surrounding these cities. Poaceae counts in Toledo were higher than those recorded for other areas of Spain such as Catalonia, but lower than those reported in some areas of northern Spanish regions such as Galicia (Fernández-González et al 1999;Latorre and Belmonte 2004;Jato et al 2009). …”

Section: Discussioncontrasting

confidence: 53%

Airborne pollen of allergenic herb species in Toledo (Spain)

Vaquero

Rodríguez-Torres

Rojo

et al. 2012

Environ Monit Assess

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This study analysed airborne pollen counts for allergenic herb taxa in Toledo (central Spain), a major tourist city receiving over 2 million visitors per year, located in the region of Castilla-La Mancha. The taxa selected were Chenopodiaceae-Amaranthaceae, Plantago, Poaceae and Urticaceae, all of which produce allergenic pollen giving rise to serious symptoms in pollen-allergy sufferers. Aerobiological data were recorded over a 6-year period (2005 to 2010) using the sampling and analysis procedures recommended by the Spanish Aerobiology Network. The abundance and the temporal (annual, daily and intradiurnal) distribution of these pollen types were analysed, and the influence of weather-related factors on airborne pollen counts was assessed. Pollen from herbaceous species accounted for 20.9% of total airborne pollen in Toledo, the largest contributor being Poaceae, with 8.5% of the total pollen count; this family was also the leading cause of respiratory allergies. Examination of intradiurnal variation revealed three distinct distribution patterns: (1) peak daily counts for Chenopodiaceae-Amaranthaceae and Plantago were recorded during the hottest part of the day, i.e. from 1400 to 1600 hours; (2) Urticaceae displayed two peaks (1400-1600 and 2200 hours); and (3) Poaceae counts remained fairly stable throughout the day. Two main risk periods were identified for allergies: spring, with allergies caused by Urticaceae, Plantago and Poaceae pollen, and summer, due to Chenopodiaceae-Amaranthaceae pollen.

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“…2) is in accordance with the reports from other regions [21,22], but contrary to other studies [5,23]. Poaceae pollen was observed during all the year, especially in spring when most grass species bloom [24]. The period when higher pollen concentrations occurs is similar to that observed in Portugal mainland [10] and to some regions of the Mediterranean area such as Spain, France, Italy, Greece, and Turkey [25,26].…”

Section: Discussioncontrasting

confidence: 53%

“…Furthermore, the grass pollen index found after 2010 increased and the peak pollen concentrations were reported especially in the summer. Because rainfall and temperature are important factors that control the amplitude of grass pollen seasons [4], rainfall during the months prior to the Poaceae pollen season onset, as observed in Funchal, seems to favor the growth of grasses in the summer and higher pollen production [24,28,29].…”

Section: Discussionmentioning

confidence: 99%

Main features of Poaceae pollen season in Madeira region (Portugal)

Camacho

Câmara²,

Camacho

2015

Acta Agrobot

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The pollinic spectrum of the Madeira region is dominated by grass pollen, which also represents an important aeroallergen in Europe. The present work aims to analyze the main features of the Poaceae pollen season in the Madeira region to determine the allergic risk. The study took place in Funchal city, the capital of Madeira Island, over a period of 10 years (2003)(2004)(2005)(2006)(2007)(2008)(2009)(2010)(2011)(2012). The airborne pollen monitoring was carried out with a Hirst type volumetric trap, following well-established guidelines.In the atmosphere of Funchal, the mean annual Poaceae pollen index was 229. The mean Poaceae pollen season lasts 275 days, with an onset date in January/March and an end date in November/December. Poaceae counts showed a seasonal variation with 2 distinct peaks: a higher peak between March and June, and the second one in autumn. The peak values occurred mainly between April and June, and the highest peak was 93 grains/m 3 , detected on the 27th May of 2010. The Poaceae pollen remaining at low levels during the whole growing season, presenting a nil to low allergenic risk during most of the study period. Higher critical levels of allergens have been revealed after 2006. In general, the pollen risk from Poaceae lasted only a few days per year, despite the very long pollen season and the abundance of grasses in the landscape of Madeira Island.

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Temporal and spatial distribution of atmospheric Poaceae pollen in Catalonia (NE Spain) in 1996–2001

Cited by 20 publications

References 11 publications

Poaceae pollen in the atmosphere of Aranjuez, Madrid and Toledo (central Spain)

Poaceae pollen in the atmosphere of Aranjuez, Madrid and Toledo (central Spain)

Airborne pollen of allergenic herb species in Toledo (Spain)

Main features of Poaceae pollen season in Madeira region (Portugal)

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