Bourgeois C. auteur aut IRD Alfaro A. C. auteur aut IRD Dencer-Brown A. auteur aut IRD Duprey Jean-Louis auteur aut IRD Desnues Anne auteur aut IRD Marchand Cyril auteur aut IRD text journalArticle eng text/pdf born digital access Aims Rapid expansion of temperate mangroves in New Zealand over the last decades has prompted an increase in resource consents for removal. However, little is known about the capacity of temperate mangroves to store elements, including pollutants. The main objectives of this study were to assess the stocks and soil-plant transfer of macro-nutrients (C, N, P, K, Mg, Ca, S) and trace metals (Fe, Mn, Al, Ni, Cu, Zn, Co, Cr) within temperate mangrove soils.MethodsSoil samples and root, leaf and wood tissues were analysed for their total and available elemental concentrations over a wide range of environmental conditions along the head-mouth textural, salinity and nutrient gradients of the estuary. Physico-chemical characteristics of the soil of the different sites studied were also determined.ResultsMangrove soils with lower Eh and currents upstream of the estuary trapped larger amount of macro-nutrients and heavy metals in the soils than downstream. This results in higher translocation of macro elements from the soil toward the above-ground biomass and higher translocation of heavy metals from the soil toward the litterfall, likely as a mechanism to avoid long term metal toxicity in the root system.ConclusionsThis multi-elemental study provides a comprehensive understanding of soil- plant transfers in temperate mangroves and can be used to better evaluate the ecological services of these ecosystems. specialized Avicennia marina Estuary Elements Bio-accumulation Translocation factor NOUVELLE ZELANDE 076 068 082 036 436 1-2 565-586 2019 0032-079X https://www.documentation.ird.fr/hor/fdi:010075524 10.1007/s11104-019-03945-x 0032-079X [F B010075524] https://www.documentation.ird.fr/hor/fdi:010075524 https://www.documentation.ird.fr/intranet/publi/2019/04/010075524.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2019-05-13 2019-05-13 fdi:010075524 fre