Predicting the start and peak dates of the Poaceae pollen season in Spain using process-based models

Climate Change in Spain: Phenological Trends in Southern Areas

“…Also the observed trends are stronger that those reported in other Mediterranean areas such as California and Australia (Denisson & Roberts, 2003;Sadrasa & Monzon, 2006). The findings of the present study agree with those reported for other areas of southern Europe, in pointing to a bringing-forward of pollen-season start-dates and peak pollen counts in Olea europaea and Quercus species, and to a lesser extent in Poaceae (García-Mozo et al, 2008a;2008b;2009). Although we must take into account the low significance in some of the results due to a high degree of variability in the analysed dates, the data recorded here suggest a more marked advance in southern than in north-eastern Spain, where Peñuelas et al (2002Peñuelas et al ( ) report during 1952Peñuelas et al ( -2000, an advance of 7.8 days for Quercus ilex flowering and 17 days for Vitis leaf unfolding, while flowering for Olea europaea and Quercus faginea displayed no significant trends.…”

“…In general, spring activities have occurred progressively earlier since the 1960s. Plant reproductive phenology is controlled by temperature, especially in tree species, and precipitation and photoperiod, especially in herbaceous ones (García-Mozo et al, 2000;2009;Galán et al, 2005). It has been shown that plants flowering early in spring are more affected by warming than species flowering later in the year (Ahas et al, 2002;García-Mozo et al, 2002;Galán et al, 2005).…”

The influence of extreme high and low temperatures and precipitation totals on pollen seasons of Ambrosia, Poaceae and Populus in Szeged, southern Hungary

“…Bartková-Ščevková, 2003;Rodríguez-Rajo et al, 2005;Štefanič et al, 2005;Kasprzyk, 2008;Recio et al, 2010), while others, based on meteorological data, use different techniques for predicting pollen characteristics (e.g. Galán et al, 2001;Aznarte et al, 2007;García-Mozo et al, 2009).…”

Comparison of phenological, aerobiological and melissopalynological patterns of Olea europaea

“…Indeed, the start and end date as well as the peak day of the pollen season can be influenced by the long-range transport phenomena of olive pollen from neighbour regions (Vázquez et al, 2003;Galan et al, 2004;Galán et al, 2008). Thus, several authors point out that phenological data should also be obtained in order to specify the aerobiological pollen season with respect to the local flowering in a more accurate way (Fornaciari et al, 2000;Garcıa-Mozo et al, 2009;Jato et al, 2006).…”

“…In general, aerobiological observations about the pollen season are strongly influenced by the taxon, the location and the large-scale weather conditions (Estrella et al, 2006;Jato et al, 2006). Thus, phenological observations should be made in order to define the aerobiological pollen season according to the local flowering, especially when airborne pollen is used as bioindicator of flowering phenophase in climate changes investigations (Fornaciari et al, 2000;Garcıa-Mozo et al, 2009;Jato et al, 2006).…”