Abiotic factors affecting the development of Ulva sp. (Ulvophyceae; Chlorophyta) in freshwater ecosystems

dc.contributor.authorMessyasz, Beata
dc.contributor.authorRybak, Andrzej
dc.date.accessioned2010-12-17T13:07:11Z
dc.date.available2010-12-17T13:07:11Z
dc.date.issued2010-07-20
dc.description.abstractThe influence of physicochemical factors on the development of Ulva species with distromatic tubular morphology was studied in three streams located in Poznan, Poland. The study evaluated key environmental factors that may influence the colonisation and growth of Ulva populations in freshwater systems. In total, nine environmental parameters were included: temperature, water depth, pH, oxygen (O2), ammonium (NH4),nitrate (NO3-), phosphate(PO43-), sodium chloride (NaCl) and total iron (Fe). Morphometric features of thalli (length and width, percentage of furcated and young thalli) and surface area of free-floating mats formed by the freshwater populations of Ulva were compared at all sites. Principal components analysis indicated the most important factors influencing Ulva development were sodium chloride concentrations and water depth. Two other key chemical factors affecting the freshwater form of Ulva were phosphate and nitrite concentrations. High concentrations of sodium chloride inhibited the development of Ulva, leading to a lower number of thalli in the Ulva mats. At the siteswith stable and deeper water, the surface area of the mats was larger. Both phosphate and nitrite concentrations were positively correlated with an increase in the number of thalli in the mats and the thalli length.pl_PL
dc.identifier.citationAquat Ecol DOI 10.1007/s10452-010-9333-9pl_PL
dc.identifier.urihttp://hdl.handle.net/10593/751
dc.language.isoenpl_PL
dc.publisherSpringerpl_PL
dc.subjectUlvapl_PL
dc.subjectChlorophytapl_PL
dc.subjectMacroalgae matspl_PL
dc.subjectPCApl_PL
dc.subjectEcologypl_PL
dc.subjectNutrientspl_PL
dc.titleAbiotic factors affecting the development of Ulva sp. (Ulvophyceae; Chlorophyta) in freshwater ecosystemspl_PL
dc.typeArtykułpl_PL

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Uniwersytet im. Adama Mickiewicza w Poznaniu
Biblioteka Uniwersytetu im. Adama Mickiewicza w Poznaniu
Ministerstwo Nauki i Szkolnictwa Wyższego