Assessing the efficiencies and challenges for nutrient uptake by aquatic plants

Show simple item record Angove, Charlotte Norkko, Alf Gustafsson, Camilla 2020-01-02T09:59:01Z 2020-01-02T09:59:01Z 2018-10
dc.identifier.citation Angove , C , Norkko , A & Gustafsson , C 2018 , ' Assessing the efficiencies and challenges for nutrient uptake by aquatic plants ' , Journal of Experimental Marine Biology and Ecology , vol. 507 , pp. 23-30 .
dc.identifier.other PURE: 115984164
dc.identifier.other PURE UUID: 6fbadc10-a48f-436b-a58e-969aa16b0099
dc.identifier.other WOS: 000442704000004
dc.identifier.other Scopus: 85050658005
dc.identifier.other ORCID: /0000-0003-2622-2667/work/67134456
dc.identifier.other ORCID: /0000-0001-7308-3802/work/67135466
dc.description.abstract Aquatic plant meadows are valuable components to the 'coastal filter' and it is important to understand the processes that drive their ability to cycle nutrients. However, at present, the field-based evidence for understanding the drivers of nutrient uptake by plants is lacking. This study aimed to investigate how well individual shoots of aquatic plants could meet their nitrogen demands using the sediment nutrient pool (porewater ammonium) and to explore which traits helped to facilitate such uptake. Several species were investigated in shallow, submerged (2-4 m) mixed-species communities in the northern Baltic Sea using incubation experiments with enriched ammonium. After a 3.5 h incubation time, individuals were collected and analysed for nitrogen (% DW) and N-15 (at-%) concentrations. Uptake by plants was calculated per unit nitrogen in response to the N-15 labelled source and to overall nitrogen availability. Background porewater ammonium availability was highly variable between individual plants. Species identity did not significantly affect uptake metrics and the effect of ambient porewater availability was weak. As biomass increased there were significant logarithmic declines in the 95th quantiles of nutrient uptake rates, ambient porewater nutrient availability and aboveground nitrogen tissue concentrations (% DW). Such findings suggested that uptake rates of plants were significantly demand driven and the nutrient conditions of the porewater were significantly driven by the demands of the plant. Findings parameterised the unfulfilled potential for some aquatic plants to cycle nutrients more efficiently and highlighted the potential importance of access to new nutrient sources as a way of enhancing nutrient cycling by aquatic plants. Plant traits and community properties such as the activity of infauna could facilitate such an access and are likely important for nutrient uptake. en
dc.format.extent 8
dc.language.iso eng
dc.relation.ispartof Journal of Experimental Marine Biology and Ecology
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject Nitrogen
dc.subject Functional traits
dc.subject Seagrass
dc.subject Baltic Sea
dc.subject Sediment
dc.subject Zostera marina
dc.subject Nutrient cycling
dc.subject Nutrient enrichment
dc.subject NITROGEN
dc.subject PHOSPHORUS
dc.subject GROWTH
dc.subject SCALE
dc.subject 1172 Environmental sciences
dc.subject 1181 Ecology, evolutionary biology
dc.title Assessing the efficiencies and challenges for nutrient uptake by aquatic plants en
dc.type Article
dc.contributor.organization Marine Ecosystems Research Group
dc.contributor.organization Tvärminne Zoological Station
dc.contributor.organization Ecosystems and Environment Research Programme
dc.contributor.organization Tvärminne Benthic Ecology Team
dc.description.reviewstatus Peer reviewed
dc.relation.issn 0022-0981
dc.rights.accesslevel openAccess
dc.type.version acceptedVersion

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