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DTSTAMP:20260505T141259Z
SUMMARY:Spatiotemporal drivers of ectomycorrhizas
DESCRIPTION:Abstract:\nMycorrhizal fungi regulate forest and nutrient dynam
 ics\, including soil carbon\, in boreal and temperate forests. However\, t
 he drivers of their distribution and whether they change over time remain 
 unknown. Using a network of 139 forest sites across Europe and the UK\, we
  explore the biogeographic and ecological mechanisms underlying species’
  spatial distribution. Using snapshot resampling\, for the first time\, we
  quantify how forest mycorrhizal communities change over time and identify
  the main drivers of these changes. By measuring physiological fungal trai
 ts\, we link species properties to their responses to environmental change
  and their potential effects on soil carbon content.\nEctomycorrhizal dive
 rsity is driven mainly by host trees\, climate\, and atmospheric nitrogen 
 pollution. Community composition responds to the same drivers and shows so
 me biogeographic structuring across ecoregions. Over time\, diversity incr
 eased despite major shifts in species composition\, with some abundant spe
 cies showing up to a 50% decrease in abundance over ~10 years. Ectomycorrh
 izal communities across Europe show signs of homogenisation\, potentially 
 due to an increase in nitrophilic species accompanied by northward and sou
 thward migrations.\nChanges in precipitation\, temperature\, and nitrogen 
 deposition are the main drivers of change in ectomycorrhizal communities o
 ver time. Finally\, atmospheric inorganic nitrogen deposition selects agai
 nst species specialised in organic nitrogen foraging\, potentially impacti
 ng soil carbon storage capacity. These results suggest that large-scale sh
 ifts in mycorrhizal composition over time can lead to changes in nutrient 
 dynamics across European forests.\n 
URL:https://www.imperial.ac.uk/events/208754/spatiotemporal-drivers-of-ecto
 mycorrhizas/
DTSTART;TZID=Europe/London:20260514T130000
DTEND;TZID=Europe/London:20260514T140000
LOCATION:Oak/Birch lecture theatre\, Hamilton Building\, Silwood Park Campu
 s\, Imperial College London\, Berkshire\, SL5 7PY\, United Kingdom
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