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UID:www.bayceer.uni-bayreuth.de-bayceer-t62445id
DTSTAMP:20260812T062105Z
DESCRIPTION:Vortrag im Rahmen des GCE (eingeladen durch Beierkuhnlein). Pos
 itive interactions between plants and their knock-on effects on the functi
 oning of ecosystems are receiving increasing attention in ecological resea
 rch. In addition\, biodiversity-ecosystem functioning experiments have oft
 en found positive effects of mixtures of species with different functional
  traits on ecosystem productivity and nutrient cycling. The challenge now 
 is to address the question of how relevant positive interactions found in 
 biodiversity experiments are under different environmental settings. It co
 uld be that environmental factors such as the availability of nutrients ov
 erride any positive biodiversity effects in one habitat\, whereas in other
  habitats the effects act synergistically. According to the stress gradien
 t hypothesis (Callaway XX)\, positive interactions between plants should i
 ncrease\, as one move from a less stressed to a highly stressed (harsh) en
 vironment. In my group we are testing positive interactions (usually found
  in mesic grassland biodiversity experiments) across nutrient stress gradi
 ents both in the field and in controlled glasshouses and climate chambers 
 to see if they become stronger under nutrient stress. In the case of more 
 positive interactions and concomitant positive effects on functioning of e
 cosystems\, this should prove to be very useful in applying to degraded ec
 osystem needing restoration (such as ex-mining sites\, eutrophic sites. Th
 e particular focus is on N2-fixing plants and their positive effects on ne
 ighbours as modulated by the diversity of the mixtures\, and we use stable
  isotope techniques to investigate these questions.
DTSTART;TZID=Europe/Berlin:20090507T161500
DTEND;TZID=Europe/Berlin:20090507T174500
LOCATION:H6
SUMMARY:Dr. Vicky Temperton\, Forschungszentrum Jülich\, Institut f. Chemie
  u. Dynamik d. Geosphäre\, ICG-3\, Phytosphäre: Plant-plant interactions &
  biodiversity - and their connection to the  restoration of degraded sites
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