Fertility effects on Ulva thalli mass development in inland waters of Poland
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Date
2013
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Abstract
The genus Ulva (Ulvophyceae, Chlorophyta) consists of some 140 species which are present
mainly in marine waters. Nine species occur in the inland waters in Poland (central Europe), of which U.
flexuosa subsp. pilifera (Kützing) Bliding is the most widespread in the Wielkopolska region. The
occurrence of Ulva species in any particular locality seems to be governed mainly by the availability of
nutrients (N, P) than by the high levels of anthropogenic salinity in freshwaters. Freshwater Ulva can
grow in different types of ecosystems from reservoir (Malta) through ponds (Tulce) or rivers (Nielba) and
ending on drainage ditches. The main question addressed by this study was does the quantity and size of
Ulva thalli increase together with the amount of nutrients in water? In addition, the aim of the study was
to determine whether the development and the persistence for the long time of the big and dense Ulva
patches exert influence for the aqueous ecosystem. We used freshwater Ulva as a model study species.
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Sponsor
The study was supported by the Polish Ministry of Education Science grant
No. N N304 0134 37 and partially from projects GDWB-07/2011
Keywords
macroalge, Ulva spp, freshwater ecosystems, thallus and cells size, morphology, morphology, Poland
Citation
Messyasz et al. 2013, Biologie Animală, Supliment 1: 69-81.