scholarly journals The influence of meteorological conditions on the start of the hazel (Corylus L.) pollen season in Lublin, 2001-2009

2012 ◽  
Vol 62 (2) ◽  
pp. 59-66 ◽  
Author(s):  
Krystyna Piotrowska ◽  
Bogusław M. Kaszewski
Keyword(s):  
Pollen Season ◽  
Pollen Grains ◽  
Great Accuracy ◽  
Early Spring ◽  
Meteorological Conditions ◽  
Pollen Emission ◽  
Start Date ◽  
Preceding Period ◽  
Relationship Of ◽  
The Relationship

Early spring flowering plants show large differences in the start dates of pollen emission due to high weather variability in the preceding period. In the present study, the influence of meteorological conditions on the start date of the hazel pollen season in Lublin in the years 2001-2009 was investigated. The aeropalynological study was carried out by the volumetric method using a Lanzoni VPPS 2000 sampler. The start of the hazel pollen season was determined using the 98% method. The differences in particular years of the study were over two months. Hazel pollen grains were recorded earliest in 2007, since from 13 January, and latest in 2003, from 18 March. It was found that accumulated 5-day mean temperature before the season affects the onset of the pollen season. As a result of multiple regression analysis, a statistical model was derived, which shows with great accuracy the relationship of the start of the hazel pollen season with total precipitation and the number of winter days.

Phenological phases of pollination related to climate change

2021 ◽  
Author(s):  
Samuel Monnier ◽  
Michel Thibaudon ◽  
Jean-Pierre Besancenot ◽  
Charlotte Sindt ◽  
Gilles Oliver
Keyword(s):  
Climate Change ◽  
Pollen Season ◽  
Microscopic Analysis ◽  
Allergic Diseases ◽  
Early Spring ◽  
Late Winter ◽  
General Tendency ◽  
New Production ◽  
Start Date ◽  
Generic Term

<p>Knowledge:</p><p>Rising CO2 levels and climate change may be resulting in some shift in the geographical range of certain plant species, as well as in increased rate of photosynthesis. Many plants respond accordingly with increased growth and reproduction and possibly greater pollen yields, that could affect allergic diseases among other things.</p><p>The aim of this study is the evolution of aerobiological measurements in France for 25-30 years. This allows to follow the main phenological parameters in connection with the pollination and the ensuing allergy risk.</p><p>Material and method:</p><p>The RNSA (French Aerobiology Network) has pollen background-traps located in more than 60 towns throughout France. These traps are volumetric Hirst models making it possible to obtain impacted strips for microscopic analysis by trained operators. The main taxa studied here are birch, grasses and ragweed for a long period of more than 25 years over some cities of France.</p><p>Results:</p><p>Concerning birch but also other catkins or buds’ trees pollinating in late winter or spring, it can be seen an overall advance of the pollen season start date until 2004 and then a progressive delay, the current date being nearly the same as it was 20 years ago, and an increasing trend in the quantities of pollen emitted.</p><p>For grasses and ragweed, we only found a few minor changes in the start date but a longer duration of the pollen season.</p><p>Discussion:</p><p>As regards the trees, the start date of the new production of catkins or buds is never the 1<sup>st</sup> of January but depends on the species. For example, it is early July for birch. For breaking dormancy, flowering, and pollinating, the trees and other perennial species need a period of accumulation of cold degrees (Chilling) and later an accumulation of warm degrees (Forcing). With climate change these periods may be shorter or longer depending of the autumn and winter temperature. Therefore, a change in the annual temperature may have a direct effect on the vegetal physiology and hence on pollen release. It may also explain why the quantities of pollen produced are increasing.</p><p>The Poaceae reserve, from one place to another and without any spatial structuring, very contrasted patterns which make it impossible to identify a general tendency. This is probably due to the great diversity of taxa grouped under the generic term Poaceae, which are clearly not equally sensitive to climate change.</p><p>Conclusion:</p><p>Trees with allergenic pollen blowing late winter or early spring pollinate since 2004 later and produce amounts of pollen constantly increasing. Grasses and ragweed have longer periods of pollination with either slightly higher or most often lower pollen production.</p>

scholarly journals Mugwort pollen season in the air of Poland in 2019

Alergoprofil ◽  
2019 ◽  
Vol 15 (4) ◽  
pp. 23-28
Author(s):  
Małgorzata Puc ◽  
Piotr Rapiejko ◽  
Agnieszka Lipiec ◽  
Małgorzata Malkiewicz ◽  
Katarzyna Dąbrowska-Zapart ◽  
...  
Keyword(s):  
Pollen Season ◽  
Pollen Grains ◽  
Start Date ◽  
Airborne Concentration ◽  
Pollen Concentrations ◽  
Artemisia Species ◽  
Pollen Seasons ◽  
June July ◽  
Artemisia Pollen ◽  
Seasonal Pollen

  The Asteraceae family is one of the largest families, comprising 67 genera and 264 species in Poland. However, only a few genera, including Artemisia, are potential allergenic sources. The aim of the study was to compare the mugwort pollen seasons in Bialystok, Bydgoszcz, Sosnowiec, Lublin, Piotrkow Trybunalski, Opole, Olsztyn, Szczecin, Warsaw and Wroclaw in 2019. The investigations were carried out using the volumetric method. Seasonal Pollen Index was estimated as the sum of daily average pollen concentrations in the given season. The mugwort pollen season is mainly observed in June, July and at the beginning of September. In 2019 the pollen season of mugwort started first in Opole, on the June 26th. At the latest, a pollen season ended in Bydgoszcz and Warsaw, at the end of September. The differences of pollen seasons duration were extremely considerable, from 35 to 83 days. The highest airborne concentration of 97 pollen grains/m3 was noted in Lublin on the July 31st. The maximum values of seasonal pollen count in Polish cities occurred between July 28th and August 12th, most often between in late July and early August. The highest mugwort pollen allergen hazard occurred in 2019 in Lublin, Warsaw, Opole and Wroclaw, and was 2–3 times higher than in other cities. The highest variability in the analysed seasons was found in start date, while the lowest in the peak value and SPI value. In the pollen season in 2019, 2 peaks of Artemisia pollen concentrations were observed as a result of the order of flowering of A. vulgaris and A. campestris. Information on the pollination of various Artemisia species will be used to avoid excessive exposure to allergens of these pollen grains.

scholarly journals Birch (Betula L.) pollen seasons in Cracow in 1991-2008 in relation to meteorological conditions

2012 ◽  
Vol 62 (2) ◽  
pp. 67-75 ◽  
Author(s):  
Dorota Myszkowska ◽  
Katarzyna Piotrowicz
Keyword(s):  
Pollen Season ◽  
Birch Pollen ◽  
Meteorological Conditions ◽  
Air Masses ◽  
Circulation Types ◽  
Atmospheric Fronts ◽  
Pollen Seasons ◽  
Daily Concentration ◽  
Meteorological Elements ◽  
The Relationship

The parameters of the birch pollen seasons in Cracow in 1991-2008 were analysed in relation to some meteorological elements and synoptic situations (circulation types, air masses and atmospheric fronts). Two types of the pollen seasons were distinguished - highly dense and less dense. The first type of the season started on the 15<sup>th</sup> of April (on average), lasted 11-20 days and the maximum daily concentration exceeded 500 pgm<sup>-3</sup>. The less dense type started generally earlier (the first decade of April), lasted more than 20 days and the peak days were unstable. In this type of the pollen season, two peak days were often observed. The relationship between the type of the season and the meteorological conditions before the season was pointed out. Additionally, the influence of circulation types, types of air masses and atmospheric fronts over south-eastern Poland on a given day on the number of days with a daily concentration > 80 pgm<sup>-3</sup> was analysed. The relationship between the pollen season type and meteorological conditions before the season was found, among others, the influence of types of synoptic situations and air masses on the number of days with a concentration of over 80 pgm<sup>-3</sup> was established.

scholarly journals The course of birch pollen seasons in Sosnowiec (Southern Poland) in 1997–2020 in relation to meteorological conditions

Aerobiologia ◽  
2021 ◽  
Author(s):  
Katarzyna Dąbrowska-Zapart ◽  
Tadeusz Niedźwiedź
Keyword(s):  
Wind Speed ◽  
Pollen Season ◽  
Birch Pollen ◽  
Pollen Grains ◽  
Meteorological Conditions ◽  
Maximum Temperature ◽  
Synoptic Situation ◽  
Pollen Concentrations ◽  
Pollen Seasons ◽  
The Impact

AbstractThe study's main objective was to specify the extent to which weather conditions were related to the course of birch pollen seasons in the years 1997–2020. The impact of atmospheric conditions on the daily concentrations of birch pollen grains, the Annual pollen integral (APIn), and the length of pollen seasons were studied. The dependency between each meteorological condition and various features of the birch pollen season was determined using Spearman’s rho correlation, the Kruskal–Wallis test, and cluster analysis with the k-means method. It has been shown that the duration of sunshine and average air temperature occurring within 14 days preceding the season has the most significant influence on the beginning of a birch pollen season. The value of daily birch pollen concentrations in Sosnowiec showed a statistically significant positive correlation with the duration of sunlight and the average and maximum wind speed. The daily concentration also depended on the synoptic situation: the mass airflow direction, the type of air mass inflow, and the type of weather front. The near-ground temperature influenced the APIn of birch pollen grains during the period of 14 days before the beginning of the season and the meteorological conditions occurring in the summer of the preceding year such as the maximum temperature, duration of sunlight, the maximum and average wind speed, and the relative air humidity. It was concluded that the length of birch pollen seasons decreased year by year.

scholarly journals Analysis of Corylus pollen season in Poland in 2021

Alergoprofil ◽  
2021 ◽  
Vol 17 (2) ◽  
pp. 54-59
Author(s):  
Krystyna Piotrowska-Weryszko ◽  
Elżbieta Weryszko-Chmielewska ◽  
Katarzyna Dąbrowska-Zapart ◽  
Monika Ziemianin ◽  
Małgorzata Puc ◽  
...  
Keyword(s):  
Pollen Season ◽  
Pollen Allergy ◽  
Pollen Grains ◽  
Early Spring ◽  
Volumetric Method ◽  
Pollen Concentration ◽  
The Third ◽  
Pollen Seasons ◽  
Daily Concentration ◽  
Peak Value

Corylus produces allergenic pollen grains that appear in the air in early spring and cause pollen allergy in sensitive people. The aim of this study was to compare the Corylus pollen seasons in 2021 in the following 11 cities in Poland: Bialystok, Bydgoszcz, Cracow, Sosnowiec, Lublin, Olsztyn, Piotrkow Trybunalski, Szczecin, Warsaw, Wroclaw, and Zielona Gora. This research was conducted using the volumetric method and Burkard or Lanzoni pollen samplers. Pollen season duration was determined by the 95% method. The hazel pollen season in 2021 began relatively late, between February 20 and March 1. The season start was recorded earliest in Zielona Gora, while latest in Olsztyn. The highest values of maximum Corylus pollen concentration were recorded in Sosnowiec (230 P/m3) and Zielona Gora (213 P/m3), whereas the lowest ones in Bialystok (27 P/m3) and Bydgoszcz (54 P/m3). In most of these cities, the maximum daily concentration of Corylus pollen grains was recorded in the third 10 days of February or at the beginning of March and only in Lublin and Bialystok the peak value occurred later, on March 16 and March 26, respectively. The highest risk of allergy in people sensitive to the pollen of this taxon was found in Lublin, Olsztyn, and Zielona Gora. The highest values of the annual pollen integral were determined in Lublin, similarly to the previous years.

The Fecundity Of Pacific Herring (Clupea pallasi) in British Columbia Coastal Waters

1958 ◽  
Vol 15 (3) ◽  
pp. 313-330 ◽  
Author(s):  
Fuzuko Nagasaki
Keyword(s):  
Growth Rate ◽  
British Columbia ◽  
Body Length ◽  
Coastal Waters ◽  
Early Spring ◽  
Pacific Herring ◽  
Clupea Pallasi ◽  
Relationship Of ◽  
The Relationship

The fecundity of Pacific herring was investigated from a collection of 600 ovaries gathered from various localities along the British Columbia coast during the winter and early spring of 1954–55. It was found that fecundity depended mainly on body length and to a lesser extent on age, independently of its effect on body length. Certain differences in fecundity, found between herring from various localities when die relationship of fecundity to body length was considered, were not found when the relationship between fecundity, body length and age was considered. These differences were attributed to differences in growth rate. Fecundity of herring of same body length and the same age was found to be significantly higher in northern British Columbia than in southern.

scholarly journals THE RELATIONSHIP OF THE EARLY SPRING BLUES

1876 ◽  
Vol 8 (4) ◽  
pp. 61-66 ◽  
Author(s):  
Samuel H. Scudder
Keyword(s):  
Early Spring ◽  
Simple Fact ◽  
Entire Series ◽  
Relationship Of ◽  
The Relationship

The simple fact which Mr. W. H. Edwards published in this journal last May has thrown great doubt over the relationship of all the American species of Cyaniris. From eggs laid in September, 1874, by C. Pseudargiolus, he reared in the following February C. violacea. From this fact he is led to conjecture that in W. Virginia, where his experiments were made, C. neglecta may prove to be a goneutic form of the same species, reducing the entire series in that district to one.

scholarly journals Analysis of Corylus pollen season in Poland in 2020

Alergoprofil ◽  
2020 ◽  
Vol 16 (1) ◽  
pp. 34-39
Author(s):  
Krystyna Piotrowska-Weryszko ◽  
Agata Konarska ◽  
Małgorzata Puc ◽  
Elżbieta Weryszko-Chmielewska ◽  
Małgorzata Malkiewicz ◽  
...  
Keyword(s):  
Pollen Season ◽  
Pollen Allergy ◽  
Pollen Grains ◽  
Threshold Value ◽  
Early Spring ◽  
Pollen Concentration ◽  
Annual Total ◽  
Pollen Seasons ◽  
Daily Concentration ◽  
The Individual

In Poland hazel is one of the earliest flowering plants and in phenology it belongs to indicator plants that mark the beginning of early spring. Hazel pollen grains contain allergens that are a cause of pollen allergy during the early spring period. The aim of the present study was to compare Corylus pollen seasons in 2020 in the following 11 cities located in different regions of Poland: Szczecin, Bydgoszcz, Zielona Gora, Wroclaw, Opole, Sosnowiec, Piotrkow Trybunalski, Warsaw, Lublin, Olsztyn, and Bialystok. This research was conducted using the volumetric method and Burkard or Lanzoni pollen samplers. Pollen season duration was determined by the 95% method. This study analyzed the specific parameters of the pollen season (start, end, peak value, peak date, annual total) and also determined the number of days with a concentration exceeding the threshold values at which the first allergy symptoms in people sensitized to hazel pollen and symptoms in all allergic patients occur, respectively. The hazel pollen season in 2020 began relatively early, between January 11th and February 2nd. The season start was recorded earliest in Opole and latest in Olsztyn and Bialystok. The study found that the pollen season started earlier in the western part of Poland than in the eastern regions. The highest maximum Corylus pollen concentration was recorded in Lublin (388 P/m3), whereas the lowest one in Bydgoszcz (48 P/m3). The maximum daily concentration of Corylus pollen grains was recorded in different periods in the individual cities, while the peak concentration values occurred between January 31th and March 4th. The highest risk of allergy in people sensitive to the pollen of this taxon was found in Lublin since the most days with a pollen concentration exceeding the threshold value were observed in this city. Lublin was found to have the highest annual total values and they were 1.6–5.6 times higher than in the other cities. The highest annual pollen sums and peak values as well as the highest number of days with a concentration exceeding the threshold value had also been recorded in Lublin previously.

Pollen morphology and the infrageneric classification of Minuartia (Caryophyllaceae)

1974 ◽  
Vol 52 (6) ◽  
pp. 1225-1231 ◽  
Author(s):  
J. McNeill ◽  
I. J. Bassett
Keyword(s):  
Pollen Morphology ◽  
Pollen Grains ◽  
Pollen Size ◽  
Infrageneric Classification ◽  
New Name ◽  
Size Type ◽  
Relationship Of ◽  
The Relationship

Pollen size, type and number of apertures, and exine thickness are reported for 25 species representative of all four subgenera of Minuartia (Caryophyllaceae) and of the related genera Honkenya and Wilhelmsia. The pollen of the species of Minuartia subgenus Rhodalsine is trizonocolpate with a relatively thin exine and it differs from that of all other species of the subfamily Alsinoideae. Species of this subfamily apparently all have pollen grains that are pantoporate with a thick exine. The relationship of the species of subgenus Rhodalsine with those of Spergularia (subfamily Paronychioideae), a genus which has pollen grains similar to those of subgenus Rhodalsine, is discussed. A new name, Minuartia webbii McNeill and Bramwell, is proposed.

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