Regional Differentiation in the Dynamics of the Pollen Seasons of Alnus, Corylus and Fraxinus in Poland (Preliminary Results)

Kasprzyk, Idalia; Uruska, A.; Szczepanek, Kazimierz; Latałowa, Małgorzata; Gawel, James E.; Harmata, Krystyna; Myszkowska, Dorota; Stach, Alicja; Stępalska, Danuta

doi:10.1023/b:aero.0000032951.25974.c9

Cited by 28 publications

(24 citation statements)

References 8 publications

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“…Model simulations consistently indicate that the 8200 cal yr BP event was predominantly a winter (DJF) and spring (MAM) event, as is also supported by the majority of palaeoclimate records from various parts of Europe (Alley andÀgústsdóttir, 2005;. The tree taxa that show strong responses to the 8200 cal yr BP event, Alnus, Corylus, and Ulmus, start flowering in early spring, in central Europe often in February-March and in southern and central Fennoscandia in March-April (Jäger et al, 1996;Kasprzyk et al, 2004). The start of their flowering and plant development is in general dependent on air temperature (Wielgolaski, 1999;Aasa et al, 2004) and if an abrupt change to cold winters and cold (Hammarlund et al, 2003Seppä et al, 2005), Rouge , and Tibetanus (Hammarlund et al, 2002).…”

Section: Discussionsupporting

confidence: 57%

“…This hypothesis is supported by investigations of the relationships between modern phenological phenomema and climate patterns (Kramer et al, 2000) and by modern pollen monitoring studies in Europe. For example, cold weather conditions during winter and spring result in a reduction of the annual pollen productivity and a delay of the start of the pollen season of tree species that are favoured by high temperatures, such as Alnus, Corylus and Ulmus (Andersen, 1972;Frenguelli, 1993;Jäger et al, 1996;Frei, 1998;Spieksma et al, 2003;Kasprzyk et al, 2004). The clear decline of the pollen percentages of these taxa may therefore reflect their phenological inability to adapt to an abrupt lowering of the winter and early spring temperatures during the 8200 cal yr BP event.…”

Section: Discussionmentioning

confidence: 99%

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Spatial structure of the 8200 cal yr BP event in northern Europe

et al. 2007

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Abstract.A synthesis of well-dated high-resolution pollen records suggests a spatial structure in the 8200 cal yr BP event in northern Europe. The temperate, thermophilous tree taxa, especially Corylus, Ulmus, and Alnus, decline abruptly between 8300 and 8000 cal yr BP at most sites located south of 61 • N, whereas there is no clear change in pollen values at the sites located in the North-European tree-line region. Pollen-based quantitative temperature reconstructions and several other, independent palaeoclimate proxies, such as lacustrine oxygen-isotope records, reflect the same pattern, with no detectable cooling in the sub-arctic region. The observed patterns challenges the general view of the widespread occurrence of the 8200 cal yr BP event in the North Atlantic region. An alternative explanation is that the cooling during the 8200 cal yr BP event took place mostly during the winter and spring, and the ecosystems in the south responded sensitively to the cooling during the onset of the growing season. In contrast, in the sub-arctic area, where the vegetation was still dormant and lakes ice-covered, the cold event is not reflected in pollen-based or lake-sediment-based records.

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Section: Discussionsupporting

confidence: 57%

Section: Discussionmentioning

confidence: 99%

Spatial structure of the 8200 cal yr BP event in northern Europe

et al. 2007

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“…and Corylus spp. that can have seasons when few pollen grains are recorded at the trap, whilst still excluding low concentrations of pollen at the beginning and end of the season that may distort analysis (Emberlin et al 1993;Kasprzyk et al 2004). …”

Section: Resultsmentioning

confidence: 99%

Changes in the pollen seasons of the early flowering trees Alnus spp. and Corylus spp. in Worcester, United Kingdom, 1996–2005

Emberlin

Smith

et al. 2006

Int J Biometeorol

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Previous work on Betula spp. (birch) in the UK and at five sites in Europe has shown that pollen seasons for this taxon have tended to become earlier by about 5-10 days per decade in most regions investigated over the last 30 years. This pattern has been linked to the trend to warmer winters and springs in recent years. However, little work has been done to investigate the changes in the pollen seasons for the early flowering trees. Several of these, such as Alnus spp. and Corylus spp., have allergens, which cross-react with those of Betula spp., and so have a priming effect on allergic people. This paper investigates pollen seasons for Alnus spp. and Corylus spp. for the years 1996-2005 at Worcester, in the West Midlands, United Kingdom. Pollen data for daily average counts were collected using a Burkard volumetric trap sited on the exposed roof of a three-story building. The climate is western maritime. Meteorological data for daily temperatures (maximum and minimum) and rainfall were obtained from the local monitoring sites. The local area up to approximately 10 km surrounding the site is mostly level terrain with some undulating hills and valleys. The local vegetation is mixed farmland and deciduous woodland. The pollen seasons for the two taxa investigated are typically late December or early January to late March. Various ways of defining the start and end of the pollen seasons were considered for these taxa, but the most useful was the 1% method whereby the season is deemed to have started when 1% of the total catch is achieved and to have ended when 99% is reached. The cumulative catches (in grains/m(3)) for Alnus spp. varied from 698 (2001) to 3,467 (2004). For Corylus spp., they varied from 65 (2001) to 4,933 (2004). The start dates for Alnus spp. showed 39 days difference in the 10 years (earliest 2000 day 21, latest 1996 day 60). The end dates differed by 26 days and the length of season differed by 15 days. The last 4 years in the set had notably higher cumulative counts than the first 2, but there was no trend towards earlier starts. For Corylus spp. start days also differed by 39 days (earliest 1999 day 5, latest 1996 day 44). The end date differed by 35 days and length of season by 26 days. Cumulative counts and lengths of season showed a distinct pattern of alternative high (long) and low (short) years. There is some evidence of a synchronous pattern for Alnus spp.. These patterns show some significant correlations with temperature and rainfall through the autumn, winter and early spring, and some relationships with growth degree 4s and chill units, but the series is too short to discern trends. The analysis has provided insight to the variation in the seasons for these early flowering trees and will form a basis for future work on building predictive models for these taxa.

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“…Research on Fraxinus in Poland can be found in [12] and [13] where the concentration comparison of this taxon in different Polish regions is presented, as well as in [14] where the hourly distribution of pollen count and the correlation between pollen concentration of Fraxinus and some…”

Section: Introductionmentioning

confidence: 99%

Analysis of Fraxinus pollen seasons and forecast models based on meteorological factors

Kubik-Komar

Piotrowska-Weryszko

Weryszko-Chmielewska

et al. 2018

Ann Agric Environ Med.

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of Fraxinus pollen seasons and forecast models based on meteorological factors. Ann Agric Environ Med. doi: 10.26444/aaem/80909 Abstract Introduction and objective. The timings of Fraxinus and Betula flowering and pollen release overlap, which may cause increased allergic reactions in sensitive people. The aim of the present study was to characterize Fraxinus pollen seasons in Lublin (central-eastern Poland) and to identify meteorological factors that most determine the occurrence of airborne pollen of this taxon, as well as obtain forecast models for the basic characteristics of the pollen season. Materials and method. The study was conducted in Lublin during the period 2001-2016, employing the volumetric method. The seasons were compared by PCA (Principal Component Analysis). To determine relationships between meteorological conditions and the pattern of pollen seasons, regression analysis was used. Data for the period 2001-2015 were used to create forecast models by applying regression analysis, while the 2016 data served to verify these models. Results. Season end date and seasonal peak date were characterized by the lowest variation. The biggest differences were found for peak value and total annual pollen sum. The average dates of occurrence of ash pollen grains in the air of Lublin were between 13 April 13 -3 May 3, whereas, on average, the pollen peak date occurred on 23 April. The factor loading values for the PC1 variable indicate that it is most strongly correlated with peak value and total pollen sum, while the PC2 variable correlated with the pollen season start date and season duration (a negative correlation). Regression models were developed for the following pollen season characteristics: season start, end and duration, seasonal peak date, and total annual pollen sum. Conclusions. The fit of the forecast models was at the level of 62-94%. Analysis of the data showed that weather conditions mainly in February were important factors controlling the Fraxinus pollen season.

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Regional Differentiation in the Dynamics of the Pollen Seasons of Alnus, Corylus and Fraxinus in Poland (Preliminary Results)

Cited by 28 publications

References 8 publications

Spatial structure of the 8200 cal yr BP event in northern Europe

Spatial structure of the 8200 cal yr BP event in northern Europe

Changes in the pollen seasons of the early flowering trees Alnus spp. and Corylus spp. in Worcester, United Kingdom, 1996–2005

Analysis of Fraxinus pollen seasons and forecast models based on meteorological factors

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