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SUMMARY:River ecomorphodynamics as an emerging discipline: scientific and 
 water management perspectives 
DTSTART:20140213T091500
DTEND:20140213T100000
DTSTAMP:20260408T033911Z
UID:0c88f39a018f82d6095eabd29b99847adf129f60cc6d6b0eeb774a8c
CATEGORIES:Conferences - Seminars
DESCRIPTION:Paolo Perona\nBio\nAcademic Career\n1997  Master in mechanica
 l engineering\, Politecnico di Torino\, I\n2001  Ph.D. in hydraulics engi
 neering\, Politecnico di Milano\, I\n2001-2003 PostDoc\, Dept Hydraulics\,
  Politecnico di Torino\, I\n2003-2005 PostDoc\, Inst. Env. Engineering\, E
 TH Zurich\, CH\n2005-2010 Senior Research Associate (Oberassistant)\, ETH 
 Zurich\, CH\n2008 Visiting scientist\, University of Hull\, United Kingdom
 s\, CH\n2010-  Assistant Professor SNF\, EPFL-ENAC\, Lausanne\, CHEducati
 onal Background\nFluid mechanics\, rheology\, time series analysis\, river
  hydraulics and sediment transportPresent research interests\nRiver and ri
 parian vegetation dynamics\, biomechanics of vegetation roots and uprootin
 g by flow erosion\, alpine catchment hydrology and snow processes\, and op
 timal water allocation strategies among traditional and non-traditional wa
 ter uses towards long-term sustainable management of the water resources.P
 rofessional experience\nExperimentalist and modellerTeaching experience\nF
 luid mechanics I\, II\; Rheology\; Water Resources Management\; Environmen
 tal Transport Phenomena\; Soil Water Regime ManagementCollaborations\nNati
 onal and international universities\, research centers\, cantonal authorit
 ies and stakeholders\nAbstract\nThe biological dynamics of riparian and ri
 verbed vegetation have been recognized to play a fundamental role in fluvi
 al morphodynamics. Hydrologic\, hydraulic and biologic processes interact 
 at different timescales\, and drive the colonization and possible stabiliz
 ation of alluvial bedforms through the growth of vegetation roots. This wa
 y\, vegetation can influence the reworking return period (i.e.\, the magni
 tude of impacting floods) of islands and bars and lead to specific riverbe
 d morphological features.\nIn this work\, we first revisit the link betwee
 n fluvial ecohydraulics and ecomorphodynamics\, particularly focusing on t
 he role of below-ground biomass (i.e.\, vegetation roots) in alluvial (non
 -cohesive) sediment\, which is quite unexplored both at the field and labo
 ratory scales. We show how streamflow regimes can influence root tropism a
 nd the related architecture under natural (Pasquale et al.\, 2012) and con
 trolled experimental conditions (Gorla et al.\, submitted). Different vert
 ical root density distributions are also shown to be determinant for the s
 urvival of pioneering vegetation (Pasquale et al.\, in press). Results fro
 m a number of laboratory experiments aimed at relating floods intertime an
 d root growth timescales to uprooting statistics are then presented (Peron
 a et al.\, 2012)\, together with the related mathematical modeling (Crouzy
  and Perona\, 2012). We discuss how the biomass selection mechanism operat
 ed by floods on riverbed vegetation is relevant to: i) select young vegeta
 tion within and among species (Crouzy et al.\, 2013)\; ii) explain the for
 mation of vegetation patterns under different conditions (e.g.\, convergin
 g boundaries\, arid climates\, etc.).\nIn conclusion\, a perspective will 
 be given on how scientific aspects of river ecomorphodynamics can meet int
 egrated water management problems. The innovative idea of optimal allocati
 on between traditional and environmental water uses will be advanced as a 
 measure towards eco-sustainability (Perona et al.\, 2013).
LOCATION:ELA1 http://plan.epfl.ch/?lang=fr&room=ela1
STATUS:CONFIRMED
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