Factors Involved in the Phenological Mechanism of Alnus Flowering in Central Europe
The objectives of this paper are to ascertain the main factors involved in the phenological mechanism of alder flowering in Central Europe by understanding the in - fluence of the main meteorological parameters, the North Atlantic Oscillation (NAO) effect and the study of the Chill and Heat requirem...
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ftunivworcester:oai:wrap.eprints.org:782 2023-05-15T17:34:16+02:00 Factors Involved in the Phenological Mechanism of Alnus Flowering in Central Europe Rodríguez Rajo, F.J. Grewling, Ł. Stach, Alicja Smith, Matt 2009 http://eprints.worc.ac.uk/782/ http://www.aaem.pl/pdf/16277.pdf unknown Institute of Agricultural Medicine Rodríguez Rajo, F.J., Grewling, Ł., Stach, Alicja and Smith, Matt orcid:0000-0002-4170-2960 (2009) Factors Involved in the Phenological Mechanism of Alnus Flowering in Central Europe. Annals of Agricultural Environmental Medicine, 16 (2). pp. 277-284. ISSN Print 1232-1966 Online 1898-2263 Q Science (General) GE Environmental Sciences QH301 Biology SD Forestry Article PeerReviewed 2009 ftunivworcester 2022-03-02T19:57:20Z The objectives of this paper are to ascertain the main factors involved in the phenological mechanism of alder flowering in Central Europe by understanding the in - fluence of the main meteorological parameters, the North Atlantic Oscillation (NAO) effect and the study of the Chill and Heat requirements to overcome dormancy. Airborne pollen (1995–2007) was collected in Poznań (Poland) by means a volumetric spore trap. Temperatures for February, and January and February averages of the NAO are generally key factors affecting the timing of the alder pollen seasons. Chilling accumulation (which started in Poznań at the beginning of November, while the end took place during the month of January) of 985 CH with a threshold temperature of -0.25ºC, followed by 118 GDDºC with a threshold temperature of 0.5ºC, were necessary to overcome dormancy and produce the onset of flowering. The calculated dormancy requirements, mean tem - peratures of the four decades of the year, and January and February average NAO index recorded during the period before flowering, were used to construct linear and multiple regression models in order to forecast the start date of the alder pollen seasons Its ac - curacy was tested using data from 2007, and the difference between the predicted and observed dates ranged from 3–7 days Article in Journal/Newspaper North Atlantic North Atlantic oscillation University of Worcester: Worcester Research and Publications |
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University of Worcester: Worcester Research and Publications |
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Q Science (General) GE Environmental Sciences QH301 Biology SD Forestry |
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Q Science (General) GE Environmental Sciences QH301 Biology SD Forestry Rodríguez Rajo, F.J. Grewling, Ł. Stach, Alicja Smith, Matt Factors Involved in the Phenological Mechanism of Alnus Flowering in Central Europe |
topic_facet |
Q Science (General) GE Environmental Sciences QH301 Biology SD Forestry |
description |
The objectives of this paper are to ascertain the main factors involved in the phenological mechanism of alder flowering in Central Europe by understanding the in - fluence of the main meteorological parameters, the North Atlantic Oscillation (NAO) effect and the study of the Chill and Heat requirements to overcome dormancy. Airborne pollen (1995–2007) was collected in Poznań (Poland) by means a volumetric spore trap. Temperatures for February, and January and February averages of the NAO are generally key factors affecting the timing of the alder pollen seasons. Chilling accumulation (which started in Poznań at the beginning of November, while the end took place during the month of January) of 985 CH with a threshold temperature of -0.25ºC, followed by 118 GDDºC with a threshold temperature of 0.5ºC, were necessary to overcome dormancy and produce the onset of flowering. The calculated dormancy requirements, mean tem - peratures of the four decades of the year, and January and February average NAO index recorded during the period before flowering, were used to construct linear and multiple regression models in order to forecast the start date of the alder pollen seasons Its ac - curacy was tested using data from 2007, and the difference between the predicted and observed dates ranged from 3–7 days |
format |
Article in Journal/Newspaper |
author |
Rodríguez Rajo, F.J. Grewling, Ł. Stach, Alicja Smith, Matt |
author_facet |
Rodríguez Rajo, F.J. Grewling, Ł. Stach, Alicja Smith, Matt |
author_sort |
Rodríguez Rajo, F.J. |
title |
Factors Involved in the Phenological Mechanism of Alnus Flowering in Central Europe |
title_short |
Factors Involved in the Phenological Mechanism of Alnus Flowering in Central Europe |
title_full |
Factors Involved in the Phenological Mechanism of Alnus Flowering in Central Europe |
title_fullStr |
Factors Involved in the Phenological Mechanism of Alnus Flowering in Central Europe |
title_full_unstemmed |
Factors Involved in the Phenological Mechanism of Alnus Flowering in Central Europe |
title_sort |
factors involved in the phenological mechanism of alnus flowering in central europe |
publisher |
Institute of Agricultural Medicine |
publishDate |
2009 |
url |
http://eprints.worc.ac.uk/782/ http://www.aaem.pl/pdf/16277.pdf |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
Rodríguez Rajo, F.J., Grewling, Ł., Stach, Alicja and Smith, Matt orcid:0000-0002-4170-2960 (2009) Factors Involved in the Phenological Mechanism of Alnus Flowering in Central Europe. Annals of Agricultural Environmental Medicine, 16 (2). pp. 277-284. ISSN Print 1232-1966 Online 1898-2263 |
_version_ |
1766133040936910848 |