[article]
| Titre : |
Diaspore bank analysis of Baltic coastal waters |
| Type de document : |
texte imprimé |
| Auteurs : |
Petra Nowak, Auteur ; Tim Steinhardt, Auteur ; Ulla Von Ammon, Auteur ; Henning Rohde, Auteur ; Arne Schoor, Auteur ; Anja Holzhausen, Auteur ; Ralf Schaible, Auteur ; Hendrik Schubert, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
pp. 159-173 |
| Langues : |
Anglais (eng) |
| Catégories : |
[habitats/milieux] 1 - Habitats littoraux et halophile
[Thèmes] Charophytes / Characées
|
| Mots-clés : |
eutrophisation restauration germination diaspore oospore |
| Résumé : |
"The coastal waters are important transition zones for terrestrial nutrient and pollutant runoff and the open Sea. During the last decades, eutrophication has negatively influenced macrophyte communities of the coastal ecosystems, making restoration activities inevitable. This study analysed recent macrophyte vegetation and the reproductive potential through the sediment diaspore reservoir along the German Baltic Sea coastline. Salinity was identified to be the responsible factor for shifts in the macrophyte community with most commonly found species like Stuckenia pectinata or Myriophyllum spicatum. In contrast, the oospores of small charophytes (e.g. Tolypella nidifica) clearly dominated the sediment diaspore bank. The germination rates differed in the recent vegetation composition and the diaspore bank composition with Zannichellia palustris as the dominant species. However, several species not visually detected at the respective sites were represented in the diaspore bank and germinated at a low rate (e.g. Chara contraria and Lamprothamnium papulosum). The maximal germination frequency corresponded to the sediment layer in which diaspore density was the highest (5–15 cm). In conclusion, the germinable diaspores were observed at all sites. Considering the differences between the diaspore composition, recent vegetation and germination success, we have illustrated the potential of the diaspore banks for the restoration of the macrophyte communities after at least mid-term periods of disturbance." (source : auteurs) |
| Type de publication : |
périodique |
| Référence biblio : |
Nowak P., Steinhardt T., Von Ammon U., Rohde H., Schoor A., Holzhausen A., Schaible R., Schubert H., 2018 - Diaspore bank analysis of Baltic coastal waters. Botany letters, 165 (1) : 159-173. |
| Permalink : |
http://www.cbnbrest.fr/catalogue_en_ligne/index.php?lvl=notice_display&id=67244 |
in Botany letters > vol. 165, n°1 (Année 2018) . - pp. 159-173
[article]
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Diaspore bank analysis of Baltic coastal waters in Botany letters, vol. 165, n°1 (Année 2018)