Repository of the Academy's Library

Long-term compositional response of phytoplankton in a shallow, turbid environment, Neusiedlersee (Austria/Hungary)

Dokulil, M. T. and Padisák, Judit (1994) Long-term compositional response of phytoplankton in a shallow, turbid environment, Neusiedlersee (Austria/Hungary). HYDROBIOLOGIA, 275-76 (1). pp. 125-137. ISSN 0018-8158 (print), 1573-5117 (online)

[img] PDF
1013934.pdf
Restricted to Registered users only

Download (981Kb) | Request a copy

Abstract

Data on phytoplankton biomass and on nutrient concentrations from Neusiedler See (mean depth 1.3 m) covering more than two decades are presented. The lake underwent strong eutrophication during this period. The response of annual average phytoplankton biomass and chlorophyll-a to the increase of phosphorus concentration from 10 to > 100 mug l-1 was moderate (7-fold increase). This is caused by light limitation of the system because of the high inorganic turbidity of the lake. Analyses of the spring, summer and autumn seasons at the generic and higher taxonomic levels show significant changes in composition of the phytoplankton community. Diatoms were more important during the pre-eutrophication phase while Chlorophyceae became most prominent during the peak of the eutrophication process. Blue-green algae, including Microcystis, became more apparent after this period. The abundance of some groups or genera, e.g. Euglena, was linked to the decline and re-appearance of submerged macrophytes in the lake. Abiotic and biotic interactions as causes for the observed changes are discussed.

Item Type: Article
Subjects: Q Science / természettudomány > QE Geology / földtudományok > QE08 Hydrosphere. Hydrology / hidroszféra, hidrológia
Q Science / természettudomány > QH Natural history / természetrajz > QH301 Biology / biológia
Q Science / természettudomány > QK Botany / növénytan
Depositing User: Erika Bilicsi
Date Deposited: 26 Oct 2012 11:26
Last Modified: 26 Oct 2012 11:26
URI: http://real.mtak.hu/id/eprint/3214

Actions (login required)

View Item View Item