Title: Dispersal, germination and survival of Populus nigra (L.) (Salicaceae) in changing hydrologic conditions. 
Resource Type: document --> technical publication --> journal article 
Country: EU Projects 
Year: 2002 
Availability: Wetlands 22(3):478-488 
Author 1/Producer: Guilloy-Froget, H. 
Other Authors/Producers: Muller, E, Barsoum, N. and Hughes, F.M.R. 
Author / Producer Type: EC Project 
Article Weblink (=direct link): http://www.sws.org/wetlands/journalsearch.mgi  
Format (e.g. PDF): HTML 
EUGRIS Keyword(s): Contaminated land-->Wider impacts / sustainability-->Environmental
Contaminated land-->Wider impacts / sustainability-->Sustainable / green remediation
 
Short description: In western Europe, Populus nigra, is a major component of riparian woodlands, but its spatial extent has decreased due to management practices. The timing of Populus nigra seed dispersal and variations in seed germinability through time and in simulated varying hydrological conditions were monitored. Individual trees displayed variations in seed release patterns: on average, seed germinability remained rather low. Large differences in germinability were observed between trees and over time. A continuously wet substrate was the most favorable condition for germination and seedling survival. A change from wet to submerged conditions increased germination and reduced seedling survival. In the case of a change from either wet or submerged to dry conditions, there was no survival possible if the dry conditions persisted more than one week. Substrate type had a significant effect on germinability only in moderate moisture conditions. 
Link to Project(s): FLOBAR 2 Floodplain Biodiversity and Restoration
 
Submitted By: Dr Stefan Gödeke WhoDoesWhat?      Last update: 29/06/2007