Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Riparian vegetation encroachment ratios in rivers below large dams
Year:2017
Research Areas
  • Natural environment,
  • Hydrology,
  • Geomorphology
Information
Abstract
Large Dams and reservoirs change the natural flow regime and consequently cause many alterations in riparian vegetation dynamics which may be assessed at different spatial and temporal scales. In Mediterranean regions flow regulation is frequently associated with irrigation. Regulated rivers with this purpose very often show reduced discharges during the wet season when the reservoir is being filled and increased discharges during the dry season when irrigation takes place. This type of regulation frequently promotes riparian vegetation growth as soil moisture levels are increased during summer when a natural drought would otherwise limit its growth. Additionally, flow regulation by large dams promotes the aging of late seral riparian vegetation reducing the frequency of flood disturbance and consequently, the potential recruitment of pioneer species. In this work we study the response of woody riparian vegetation to flow regulation by large dams in four rivers from Central Spain: Jarama, Manzanares, Guadalix and Alberche. The aim is to quantify the annual vegetation encroachment ratios and to develop a model to understand the main controlling factors, such as floodplain and channel traits; flow regulation intensity; type of regulation; present vegetation canopy; distance to the dam; and time since dam commissioning.
International
Si
Congress
European Geosciences Union General Assembly 2017
960
Place
Viena (Austria)
Reviewers
Si
ISBN/ISSN
1607-7962
Start Date
24/04/2017
End Date
28/04/2017
From page
10274
To page
10274
Geophysical Research Abstracts Vol. 19, EGU2017-10274,(2017).
Participants
  • Autor: Diego M Garcia de Jalon Lastra (UPM)
  • Autor: Vanesa Martinez Fernandez (UPM)
  • Autor: Marta Gonzalez del Tanago Del Rio (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Hidrobiología
  • Departamento: Sistemas y Recursos Naturales
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)