Please use this identifier to cite or link to this item: http://dx.doi.org/10.14279/depositonce-9523
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Main Title: Phosphorus availability and growth of benthic primary producers in littoral lake sediments
Subtitle: are differences linked to induced bank filtration?
Author(s): Gillefalk, Mikael
Herzog, Christiane
Hilt, Sabine
Type: Article
Is Part Of: 10.14279/depositonce-8613
Language Code: en
Abstract: Submerged macrophytes and periphyton are benthic primary producers that play an important role for several ecosystem functions of lakes. Their growth often depends on the availability of phosphorus (P) in sediments and overlying water. This P availability is assumed to potentially be affected by induced bank filtration (IBF), a cost-effective method for drinking water production. In this study, we tested whether littoral sediments sampled at sites with high and low influence of IBF in a temperate eutrophic lake used for bank filtration since more than 100 years affects periphyton and macrophyte growth. Sediments differed in aerobic desorbed water-soluble phosphorus (PH2O) and iron (Fe) content and the growth of macrophytes in sediments with a high impact of IBF was lower compared to sediments with low impact of IBF.We also found that P addition to the nutrient solution increased periphyton growth and that periphyton limited macrophyte growth. While these results point to a potential impact of IBF on P availability in sediments that can cascade to benthic primary producers, we could not prove mechanistic links between high rates of IBF and the lower macrophyte growth. Additional research to assure a sustainable application of this valuable drinking water production method is therefore needed.
URI: https://depositonce.tu-berlin.de/handle/11303/10597
http://dx.doi.org/10.14279/depositonce-9523
Issue Date: 27-May-2019
Date Available: 15-Jan-2020
DDC Class: 551 Geologie, Hydrologie, Meteorologie
Subject(s): groundwater-surface water interaction
macrophytes
periphyton
groundwater
sedimentary phosphorous
Sponsor/Funder: DFG, GRK 2032/1, Urban Water Interfaces (UWI)
License: https://creativecommons.org/licenses/by/4.0/
Journal Title: Water
Publisher: MDPI
Publisher Place: Basel
Volume: 11
Issue: 5
Article Number: 1111
Publisher DOI: 10.3390/w11051111
ISSN: 2073-4441
Appears in Collections:FG Ökohydrologie & Landschaftsbewertung » Publications

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