Rojo, J. ; Oteros, J.* ; Picornell, A.* ; Maya-Manzano, J.M. ; Damialis, A. ; Zink, K.* ; Werchan, M.* ; Werchan, B.* ; Smith, M.* ; Menzel, A.* ; Timpf, S.* ; Traidl-Hoffmann, C. ; Bergmann, K.C.* ; Schmidt-Weber, C.B. ; Buters, J.T.M.
     
    
        
Effects of future climate change on birch abundance and their pollen load.
    
    
        
    
    
        
        Glob. Change Biol. 27, 5934-5949 (2021)
    
    
    
      
      
	
	    Climate change impacts on the structure and function of ecosystems will worsen public health issues like allergic diseases. Birch trees (Betula spp.) are important sources of aeroallergens in Central and Northern Europe. Birches are vulnerable to climate change as these trees are sensitive to increased temperatures and summer droughts. This study aims to examine the effect of climate change on airborne birch pollen concentrations in Central Europe using Bavaria in Southern Germany as a case study. Pollen data from 28 monitoring stations in Bavaria were used in this study, with time series of up 30 years long. An integrative approach was used to model airborne birch pollen concentrations taking into account drivers influencing birch tree abundance and birch pollen production and projections made according to different climate change and socio-economic scenarios. Birch tree abundance is projected to decrease in parts of Bavaria at different rates, depending on the climate scenario, particularly in current centres of the species distribution. Climate change is expected to result in initial increases in pollen load but, due to the reduction in birch trees, the amount of airborne birch pollen will decrease at lower altitudes. Conversely, higher altitude areas will experience expansions in birch tree distribution and subsequent increases in airborne birch pollen in the future. Even considering restrictions for migration rates, increases in pollen load are likely in Southwestern areas, where positive trends have already been detected during the last three decades. Integrating models for the distribution and abundance of pollen sources and the drivers that control birch pollen production allowed us to model airborne birch pollen concentrations in the future. The magnitude of changes depends on location and climate change scenario.
	
	
	    
	
       
      
	
	    
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        Publication type
        Article: Journal article
    
 
    
        Document type
        Scientific Article
    
 
    
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        Keywords
        Betula ; Climate Change ; Ecological Modelling ; Plant Distribution ; Pollen Exposure ; Pollen Production ; Temperate Trees; German Health Interview; Betula-pendula Roth; Human Footprint; Forest; Exposure; Northern; Sensitization; Temperature; Variability; Vegetation
    
 
    
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        Language
        english
    
 
    
        Publication Year
        2021
    
 
    
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        2021
    
 
    
    
        ISSN (print) / ISBN
        1354-1013
    
 
    
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        1365-2486
    
 
    
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	    Volume: 27,  
	    Issue: 22,  
	    Pages: 5934-5949 
	    Article Number: ,  
	    Supplement: ,  
	
    
 
    
        
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            Publisher
            Wiley
        
 
        
            Publishing Place
            111 River St, Hoboken 07030-5774, Nj Usa
        
 
	
        
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        Reviewing status
        Peer reviewed
    
 
     
    
        POF-Topic(s)
        30202 - Environmental Health
    
 
    
        Research field(s)
        Allergy	
    
 
    
        PSP Element(s)
        G-505400-001
G-503400-001
    
 
    
        Grants
        Bavarian State Ministry of Health and Care project
Bavarian State Ministry of the Environment and Consumer Protection
    
 
    
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        Erfassungsdatum
        2021-09-15