Abstract

Variability in seeds’ physicochemical characteristics, germination and seedling growth within and between two French Populus nigra L. populations

Highlights

  • The European black poplar, Populus nigra L., is a dioecious, heliophilous species of the Salicaceae that inhabits the riparian softwood forest ecosystems on floodplains in a large area, ranging from western and southern Europe to west Asia and North Africa

  • The species was identified by Gurnell and Petts (2006) as an ecosystem engineer that contributes to the shaping of fluvial systems, as its life history and ecology are closely related to river patterns and processes (Karrenberg et al, 2002; Corenblit et al, 2014)

  • Large quantities of seeds are produced, mainly in May, coinciding with post-flood periods when freshly deposited, moist sediments are available for colonization (Karrenberg et al, 2002). This relationship between its life cycle and hydrological conditions has been described as the “biogeomorphological life cycle of Populus nigra” by Corenblit et al (2014)

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Summary

Introduction

The European black poplar, Populus nigra L., is a dioecious, heliophilous species of the Salicaceae that inhabits the riparian softwood forest ecosystems on floodplains in a large area, ranging from western and southern Europe to west Asia and North Africa (http://www.euforgen.org/species/populus-nigra/). The species was identified by Gurnell and Petts (2006) as an ecosystem engineer that contributes to the shaping of fluvial systems, as its life history and ecology are closely related to river patterns and processes (Karrenberg et al, 2002; Corenblit et al, 2014). Large quantities of seeds are produced, mainly in May (in temperate Europe), coinciding with post-flood periods when freshly deposited, moist sediments are available for colonization (Karrenberg et al, 2002). This relationship between its life cycle and hydrological conditions has been described as the “biogeomorphological life cycle of Populus nigra” by Corenblit et al (2014). Successful regeneration does not occur every year, and there is a strong age structure in natural stands, reflecting the flooding history (Wintenberger et al, 2019)

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