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UID:www.bayceer.uni-bayreuth.de-bayceer-t123791id
DTSTAMP:20260811T072555Z
DESCRIPTION:Global change drivers such as climate change and atmospheric nu
 trient loads (particularly of nitrogen) have multiple effects on the funct
 ioning and services of ecosystems\, and are (amongst others) the most rele
 vant key drivers of biodiversity loss. Airborne nitrogen loads have triple
 d since the beginning of industrialisation\, and are known to affect ecosy
 stem functions such as primary productivity\, nutrient cycling\, and plant
  species competition. Climate change impacts are predicted to become more 
 severe\, particularly in the course of this century. The UN Intergovernmen
 tal Panel on Climate Change (IPCC 2007) predicts increasing mean annual te
 mperatures\, alterations in precipitation patterns and more frequent weath
 er extremes (e.g. severe summer droughts\, heat waves and heavy rainfalls)
 . These shifts may influence nutrient cycles\, carbon sequestration and ec
 osystem primary productivity.\nDespite recent research on the effects of g
 lobal change drivers on ecosystem functions\, little is known about the in
 teractive effects of co-occurring global change drivers. It is conceivable
  that ecosystem responses to simultaneous effects of global change drivers
  are not simply additive\, but also interact and thus may be antagonistic 
 or mutually amplifying. The talk will address the impact of interactive ef
 fects of climate change and atmospheric nitrogen deposition on ecosystem f
 unctions such as plant growth and competition\, taking deciduous forest ec
 osystems (dominated by Fagus sylvatica and Quercus petraea) and heathland 
 ecosystems (dominated by the dwarf shrub Calluna vulgaris) as examples. Ba
 sed on recent research the talk will highlight some examples that high air
 borne nitrogen loads will interact with climate change. We hypothesize tha
 t nitrogen deposition will increase an ecosystem’s susceptibility to clima
 te shifts (i.e. increasing summer temperatures\, drought events). Thus\, s
 ingle factor studies are not always sufficient to predict conceivable impa
 cts of co-occurring global change drivers. Moreover\, the talk will explai
 n underlying mechanisms for the ecosystem responses observed.\n***\nInvite
 d by Anke Jentsch\, Disturbance Ecology
DTSTART;TZID=Europe/Berlin:20151015T120000
DTEND;TZID=Europe/Berlin:20151015T133000
LOCATION:H6\, GEO
SUMMARY:Prof. Dr. Werner Härdtle\, Landscape Ecology and Nature Conservatio
 n\, University of Lüneburg (Homepage): Global change impacts on ecosystem 
 functions – the importance of interactive effects
TRANSP:TRANSPARENT
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