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  1. Article: Comparison of Poaceae pollen counts recorded at sites in Portugal, Spain and the UK

    Rodríguez, Santiago Fernández / Adams-Groom, Beverley / Palacios, Inmaculada Silva / Caeiro, Elsa / Brandao, Rui / Ferro, Raquel / Garijo, Ángela Gonzalo / Smith, Matt / Molina, Rafael Tormo

    Aerobiologia. 2015 Mar., v. 31, no. 1

    2015  

    Abstract: The main aim of this study was to analyse the temporal and spatial variations in grass (Poaceae) pollen counts (2005–2011) recorded in Évora (Portugal), Badajoz (Spain) and Worcester (UK). Weekly average data were examined using nonparametric statistics ... ...

    Abstract The main aim of this study was to analyse the temporal and spatial variations in grass (Poaceae) pollen counts (2005–2011) recorded in Évora (Portugal), Badajoz (Spain) and Worcester (UK). Weekly average data were examined using nonparametric statistics to compare differences between places. On average, Évora recorded the earliest start dates of the Poaceae pollen seasons and Worcester the latest. The intensity of the Poaceae pollen season varied between sites, with Worcester usually recording the least and Évora the most grass pollen in a season. Mean durations of grass pollen seasons were 77 days in Évora, 78 days in Badajoz and 59 days in Worcester. Overall, longer Poaceae pollen seasons coincided with earlier pollen season start dates. Weekly pollen data, from March to September, from the three pollen-monitoring stations studied were compared. The best fit and most statistically significant correlations were obtained by moving Worcester data backward by 4 weeks (Évora, r = 0.810, p < 0.001) and 5 weeks (Badajoz, r = 0.849, p < 0.001). Weekly data from Worcester therefore followed a similar pattern to that of Badajoz and Évora but at a distance of more than 1,500 km and 4–5 weeks later. The sum of pollen recorded in a season was compared with monthly rainfall between January and May. The strongest positive relationship between season intensity and rainfall was between the annual sum of Poaceae pollen recorded in the season at Badajoz and Évora and total rainfall during January and February. Winter rainfall noticeably affects the intensity of Poaceae pollen seasons in Mediterranean areas, but this was not as important in Worcester.
    Keywords Poaceae ; grasses ; pollen ; rain ; rain intensity ; statistics ; Mediterranean region ; Portugal ; Spain ; United Kingdom
    Language English
    Dates of publication 2015-03
    Size p. 1-10.
    Publishing place Springer-Verlag
    Document type Article
    ZDB-ID 1499126-3
    ISSN 1573-3025 ; 0393-5965
    ISSN (online) 1573-3025
    ISSN 0393-5965
    DOI 10.1007/s10453-014-9338-2
    Database NAL-Catalogue (AGRICOLA)

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  2. Article: Airborne propagules of Phytophthora and related taxa in SW Spain including a predictive model

    Manzano, José María Maya / Molina, Rafael Tormo / Rodríguez, Santiago Fernández / Barroso, Pablo Durán / Palacios, Inmaculada Silva / Garijo, Ángela Gonzalo

    European journal of plant pathology

    Volume v. 143,, Issue no. 3

    Abstract: The airborne sporangia of Oomycota, including Phytophthora species and other species, are usually recorded by volumetric spore traps. The aim of this work was to create a predictive model for the seasonality and weather parameters that may affect ... ...

    Abstract The airborne sporangia of Oomycota, including Phytophthora species and other species, are usually recorded by volumetric spore traps. The aim of this work was to create a predictive model for the seasonality and weather parameters that may affect sporangia distribution by analysing their presence over the course of a year. Three Hirst spore traps were located in the SW of Spain (Plasencia, Don Benito and Zafra), and the presence of sporangia was recorded throughout 2012–2013. Phytophthora sporangia were recorded on 76–110 days per year. Autumn and spring were the seasons when the highest concentration peaks of airborne sporangia were recorded; these peaks were recorded on the same day in each of the three locations. When analysing weekly sums of the daily concentration of sporangia, there was a statistically significant correlation between the sporangia concentration and amount of rain in the three locations studied; however, this correlation was not observed when comparing the individual daily concentrations. When comparing the daily concentration to the daily rain levels, the highest correlation coefficient and statistically significant correlation was reached on the second day after rain. The proposed predictive model considered the previous rain to be the main environmental factor. Holm oak and cork oak woods in Plasencia may be responsible for a higher concentration of airborne Phytophthora-type sporangia. Rain seems to have a direct influence on the concentration of airborne sporangia, but the highest concentrations appear on the second day after rain.
    Keywords models ; environmental factors ; sporangia ; Quercus suber ; correlation ; Phytophthora ; spore traps ; spring ; Quercus ilex ; rain
    Language English
    Document type Article
    ISSN 0929-1873
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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  3. Article: Comparison of Poaceae pollen counts recorded at sites in Portugal, Spain and the UK

    Rodríguez, Santiago Fernández / Adams-Groom, Beverley / Palacios, Inmaculada Silva / Caeiro, Elsa / Brandao, Rui / Ferro, Raquel / Garijo, Ángela Gonzalo / Smith, Matt / Molina, Rafael Tormo

    Aerobiologia

    Volume v. 31,, Issue no. 1

    Abstract: The main aim of this study was to analyse the temporal and spatial variations in grass (Poaceae) pollen counts (2005–2011) recorded in Évora (Portugal), Badajoz (Spain) and Worcester (UK). Weekly average data were examined using nonparametric statistics ... ...

    Abstract The main aim of this study was to analyse the temporal and spatial variations in grass (Poaceae) pollen counts (2005–2011) recorded in Évora (Portugal), Badajoz (Spain) and Worcester (UK). Weekly average data were examined using nonparametric statistics to compare differences between places. On average, Évora recorded the earliest start dates of the Poaceae pollen seasons and Worcester the latest. The intensity of the Poaceae pollen season varied between sites, with Worcester usually recording the least and Évora the most grass pollen in a season. Mean durations of grass pollen seasons were 77 days in Évora, 78 days in Badajoz and 59 days in Worcester. Overall, longer Poaceae pollen seasons coincided with earlier pollen season start dates. Weekly pollen data, from March to September, from the three pollen-monitoring stations studied were compared. The best fit and most statistically significant correlations were obtained by moving Worcester data backward by 4 weeks (Évora, r = 0.810, p < 0.001) and 5 weeks (Badajoz, r = 0.849, p < 0.001). Weekly data from Worcester therefore followed a similar pattern to that of Badajoz and Évora but at a distance of more than 1,500 km and 4–5 weeks later. The sum of pollen recorded in a season was compared with monthly rainfall between January and May. The strongest positive relationship between season intensity and rainfall was between the annual sum of Poaceae pollen recorded in the season at Badajoz and Évora and total rainfall during January and February. Winter rainfall noticeably affects the intensity of Poaceae pollen seasons in Mediterranean areas, but this was not as important in Worcester.
    Keywords grasses ; pollen ; Poaceae ; rain ; statistics ; rain intensity
    Language English
    Document type Article
    ISSN 0393-5965
    Database AGRIS - International Information System for the Agricultural Sciences and Technology

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    Order via subito

    This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

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