Benthic nitrogen metabolism in a macrophyte meadow ( Vallisneria spiralis L.) under increasing sedimentary organic matter loads
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| 024 | 7 | 0 | |a 10.1007/s10533-015-0104-5 |2 doi |
| 035 | |a (NATIONALLICENCE)springer-10.1007/s10533-015-0104-5 | ||
| 245 | 0 | 0 | |a Benthic nitrogen metabolism in a macrophyte meadow ( Vallisneria spiralis L.) under increasing sedimentary organic matter loads |h [Elektronische Daten] |c [Elisa Soana, Mariachiara Naldi, Stefano Bonaglia, Erica Racchetti, Giuseppe Castaldelli, Volker Brüchert, Pierluigi Viaroli, Marco Bartoli] |
| 520 | 3 | |a Organic enrichment may deeply affect benthic nitrogen (N) cycling in macrophyte meadows, either promoting N loss or its recycling. This depends upon the plasticity of plants and of the associated microbial communities, as those surrounding the rhizosphere. Rates of denitrification, dissolved inorganic N fluxes and N uptake were measured in sediments vegetated by the submerged macrophyte Vallisneria spiralis L. under increasing organic matter loads. The aim was to investigate how the combined N assimilation and denitrification, which subtract N via temporary retention and permanent removal, respectively, do vary along the gradient. Results showed that V. spiralis meadows act as regulators of benthic N cycling even in organic enriched sediments, with negative feedbacks for eutrophication. A moderate organic load stimulates N uptake and denitrification coupled to nitrification in the rhizosphere. This is due to a combination of weakened competition between macrophytes and N cycling bacteria and enhanced radial oxygen loss by roots. An elevated organic enrichment affects N uptake due to hostile conditions in pore water and plant stress and impairs N mineralisation and its removal via denitrification coupled to nitrification. However, the loss of plant performance is almost completely compensated by increased denitrification of water column nitrate, resulting in a shift between the relative relevance of temporary and permanent N removal processes. | |
| 540 | |a Springer International Publishing Switzerland, 2015 | ||
| 690 | 7 | |a Organic enrichment |2 nationallicence | |
| 690 | 7 | |a Vallisneria spiralis |2 nationallicence | |
| 690 | 7 | |a Radial oxygen loss |2 nationallicence | |
| 690 | 7 | |a N fluxes |2 nationallicence | |
| 690 | 7 | |a Denitrification |2 nationallicence | |
| 690 | 7 | |a N uptake |2 nationallicence | |
| 700 | 1 | |a Soana |D Elisa |u Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy |4 aut | |
| 700 | 1 | |a Naldi |D Mariachiara |u Department of Life Sciences, University of Parma, Viale G.P. Usberti 33/A, 43124, Parma, Italy |4 aut | |
| 700 | 1 | |a Bonaglia |D Stefano |u Department of Geological Sciences, Stockholm University, Svante Arrheniusväg 8 C, 106 91, Stockholm, Sweden |4 aut | |
| 700 | 1 | |a Racchetti |D Erica |u Department of Life Sciences, University of Parma, Viale G.P. Usberti 33/A, 43124, Parma, Italy |4 aut | |
| 700 | 1 | |a Castaldelli |D Giuseppe |u Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy |4 aut | |
| 700 | 1 | |a Brüchert |D Volker |u Department of Geological Sciences, Stockholm University, Svante Arrheniusväg 8 C, 106 91, Stockholm, Sweden |4 aut | |
| 700 | 1 | |a Viaroli |D Pierluigi |u Department of Life Sciences, University of Parma, Viale G.P. Usberti 33/A, 43124, Parma, Italy |4 aut | |
| 700 | 1 | |a Bartoli |D Marco |u Department of Life Sciences, University of Parma, Viale G.P. Usberti 33/A, 43124, Parma, Italy |4 aut | |
| 773 | 0 | |t Biogeochemistry |d Springer International Publishing |g 124/1-3(2015-05-01), 387-404 |x 0168-2563 |q 124:1-3<387 |1 2015 |2 124 |o 10533 | |
| 856 | 4 | 0 | |u https://doi.org/10.1007/s10533-015-0104-5 |q text/html |z Onlinezugriff via DOI |
| 898 | |a BK010053 |b XK010053 |c XK010000 | ||
| 900 | 7 | |a Metadata rights reserved |b Springer special CC-BY-NC licence |2 nationallicence | |
| 908 | |D 1 |a research-article |2 jats | ||
| 949 | |B NATIONALLICENCE |F NATIONALLICENCE |b NL-springer | ||
| 950 | |B NATIONALLICENCE |P 856 |E 40 |u https://doi.org/10.1007/s10533-015-0104-5 |q text/html |z Onlinezugriff via DOI | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Soana |D Elisa |u Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Naldi |D Mariachiara |u Department of Life Sciences, University of Parma, Viale G.P. Usberti 33/A, 43124, Parma, Italy |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Bonaglia |D Stefano |u Department of Geological Sciences, Stockholm University, Svante Arrheniusväg 8 C, 106 91, Stockholm, Sweden |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Racchetti |D Erica |u Department of Life Sciences, University of Parma, Viale G.P. Usberti 33/A, 43124, Parma, Italy |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Castaldelli |D Giuseppe |u Department of Life Sciences and Biotechnology, University of Ferrara, Via L. Borsari 46, 44121, Ferrara, Italy |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Brüchert |D Volker |u Department of Geological Sciences, Stockholm University, Svante Arrheniusväg 8 C, 106 91, Stockholm, Sweden |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Viaroli |D Pierluigi |u Department of Life Sciences, University of Parma, Viale G.P. Usberti 33/A, 43124, Parma, Italy |4 aut | ||
| 950 | |B NATIONALLICENCE |P 700 |E 1- |a Bartoli |D Marco |u Department of Life Sciences, University of Parma, Viale G.P. Usberti 33/A, 43124, Parma, Italy |4 aut | ||
| 950 | |B NATIONALLICENCE |P 773 |E 0- |t Biogeochemistry |d Springer International Publishing |g 124/1-3(2015-05-01), 387-404 |x 0168-2563 |q 124:1-3<387 |1 2015 |2 124 |o 10533 | ||