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Seagrass (Zostera marina L.) bed recolonisation after anoxia-induced full mortality
Plus, M.; Deslous-Paoli, J.-M.; Dagault, F. (2003). Seagrass (Zostera marina L.) bed recolonisation after anoxia-induced full mortality. Aquat. Bot. 77(2): 121-134. http://dx.doi.org/10.1016/s0304-3770(03)00089-5
In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770; e-ISSN 1879-1522
Peer reviewed article  
Beschikbaar in  Auteurs 
Trefwoorden
    Anoxic conditions
    Colonization
    Flora > Weeds > Marine organisms > Seaweeds > Sea grass
    MED, France, Languedoc-Roussillon, Thau Lagoon
    Population functions > Mortality
    Zostera marina Linnaeus, 1753 [WoRMS]
    Thau Lagoon [Marine Regions]
    Marien/Kust
Author keywords
    seagrass recolonisation; anoxic crises; Zostera marina; Thau lagoon
Auteurs  Top 
  • Plus, M.
  • Deslous-Paoli, J.-M.
  • Dagault, F.
Abstract
    Recolonisation of Zostera marina, following complete destruction caused by an anoxic crisis, was studied in the Thau lagoon (French Mediterranean Sea) from February 1998 to September 1999. The recolonisation took place surprisingly rapidly as biomasses similar to those from untouched areas were reached only nine months after seed germination. The recolonisation success was partly due to a high seedling survival rate as well as a rapid vegetative recruitment (ranging from 0.012 to 0.042 per day). Two phases of recovery could be observed: a rapid multiplication of shoots during the first 3 months was followed by an increase in biomass due to elongation of leaves. During the first year of recolonisation no flowering shoot was observed whilst reproductive effort was considerable during the second year. In case of two consecutive anoxic crises at the same site, the recovery would have probably been much slower, since the annual seedbank would have been depleted.
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