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Het OWA, het open archief van het Waterbouwkundig Laboratorium heeft tot doel alle vrij toegankelijke onderzoeksresultaten van dit instituut in digitale vorm aan te bieden. Op die manier wil het de zichtbaarheid, verspreiding en gebruik van deze onderzoeksresultaten, alsook de wetenschappelijke communicatie maximaal bevorderen.

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Applying the seedling-emergence method under waterlogged conditions to detect the seed bank of aquatic plants in submerged sediments Boedeltje, G.; ter Heerdt, G.N.J.; Bakker, J.P. (2002). Applying the seedling-emergence method under waterlogged conditions to detect the seed bank of aquatic plants in submerged sediments. Aquat. Bot. 72(2): 121-128 In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770; e-ISSN 1879-1522, meer

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Trefwoorden

Flora > Aquatic organisms > Aquatic plants Germination Population characteristics > Biomass Sediments Seedlings Submergence

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Auteurs		Top
Boedeltje, G., correspondent ter Heerdt, G.N.J. Bakker, J.P., meer

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Abstract

Seed bank studies focused on submerged aquatic plants are generally performed under submerged conditions, using the seedling-emergence method. However, if a study targets at both submerged species and helophytes, submerged conditions are generally not suitable. We tested the emergence of seedlings from sediment samples from a freshwater canal, comparing a waterlogged treatment with a submerged treatment. From the sediment samples 31 species emerged. Eight species germinated in significantly larger numbers from the waterlogged treatment, one being a submerged species and four helophytes. No species germinated better under submerged conditions. The total number of species germinating under waterlogged conditions was significantly higher than under submerged conditions. Germination experiments with Potamogeton species showed no significant differences in germination percentage between a waterlogged and submerged treatment for at least two species. In the study of seed banks of submerged sediments, aimed at both submerged aquatic plants and helophytes, a waterlogged treatment is therefore suitable to detect both groups of plants.

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