Plant Ecology

, Volume 206, Issue 2, pp 335–347

Factors affecting the success of early salt-marsh colonizers: seed availability rather than site suitability and dispersal traits

Authors

  • Reza Erfanzadeh
    • Department of Biology, Terrestrial Ecology UnitGhent University
    • Faculty of Natural Resources and Marine SciencesTarbiat Modares University
  • Angus Garbutt
    • NERC Centre for Ecology and Hydrology, Environment Centre Wales
    • Department of Biology, Terrestrial Ecology UnitGhent University
  • Jean-Pierre Maelfait
    • Department of Biology, Terrestrial Ecology UnitGhent University
    • Department of Biodiversity and Natural EnvironmentResearch Institute for Nature and Forest
  • Maurice Hoffmann
    • Department of Biology, Terrestrial Ecology UnitGhent University
    • Department of Biodiversity and Natural EnvironmentResearch Institute for Nature and Forest
Article

DOI: 10.1007/s11258-009-9646-8

Cite this article as:
Erfanzadeh, R., Garbutt, A., Pétillon, J. et al. Plant Ecol (2010) 206: 335. doi:10.1007/s11258-009-9646-8

Abstract

We evaluated the process of salt-marsh colonization in early successional stages of salt-marsh restoration and investigated how the sequence of species establishment related to different success factors. Vegetation data were collected by permanent plots from the restoration site and adjacent, reference salt marshes during three consecutive periods. Seed length, width and mass were used as dispersal traits, and Ellenberg moisture, salinity and nutrient indices as indicators of site suitability. Seed production in the reference site and seed bank in the restoration site were also investigated. The establishment of salt-marsh species within the restoration site was rapid (less than 5 years). The cover of plant species was not correlated between the restored and the reference sites at the first year of restoration, but this correlation was significant during the following years. Seed availability was more important in explaining the sequence of species establishment than salt and nutrient-limitation tolerance. The first colonizers are known as massive seed producers, with shorter seed length and lower seed mass, which probably increased buoyancy. Among dispersal and site traits, seed length and mass, and in a less extent salinity and nutrients, indicated a relationship with new colonizers. Despite few species have not (yet) appeared in vegetation and seed bank in the restoration site, the existence of an existing salt marsh adjacent to the restoration site is shown to be vital for fast colonization of newly created intertidal areas.

Keywords

Site suitabilitySeed dispersal traitsSeed availabilityPrimary succession

Copyright information

© Springer Science+Business Media B.V. 2009