Article (Scientific journals)
Nitrogen dynamics in Posidonia oceanica cuttings: implications for transplantation experiments
Lepoint, Gilles; Vangeluwe, Denis; Eisinger, Michael et al.
2004In Marine Pollution Bulletin, 48 (5-6), p. 465-470
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Keywords :
Posidonia; seagrass; transplantation; nitrogen budget; N-15 tracer; NW Mediterranean
Abstract :
[en] A N-15 tracer study was performed during an experimental transplantation trial of natural Posidonia oceanica cuttings. The experiment was done in situ at 17 m depth in the Revellata Bay (Calvi, NW Corsica, France). Despite high survival rates of transplants (>90%) after one year, the weight and the N content of transplants are significantly lower than those of reference plants. In absence of roots, the transplants are not able to meet their N requirement because, leaf uptake is insufficient to replenish the N lost during the natural leaf decay. This could constitute a major cause of long-term failure for transplantation experiments or natural recolonisation processes. The increase of the N-15 content in the roots shows that the plant re-allocates the nitrogen of one organ (i.e. leaves, rhizomes) to ensure the growth of another (i.e. roots). (C) 2003 Elsevier Ltd. All rights reserved.
Research center :
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège
Disciplines :
Aquatic sciences & oceanology
Environmental sciences & ecology
Author, co-author :
Lepoint, Gilles  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Vangeluwe, Denis;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Eisinger, Michael;  Essen University (Germany)
Paster, Marcus;  Essen University (Germany)
van Treeck, Peter;  Essen University (Germany)
Bouquegneau, Jean-Marie ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Gobert, Sylvie  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Language :
English
Title :
Nitrogen dynamics in Posidonia oceanica cuttings: implications for transplantation experiments
Publication date :
March 2004
Journal title :
Marine Pollution Bulletin
ISSN :
0025-326X
Publisher :
Pergamon-Elsevier Science Ltd, Oxford, United Kingdom
Volume :
48
Issue :
5-6
Pages :
465-470
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Novel Marine Technology (NOMATEC)
Funders :
DG RDT - Commission Européenne. Direction Générale de la Recherche et de l'Innovation [BE]
Available on ORBi :
since 26 November 2008

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