Copper in the sediment: A major stressor for eelgrass, Zostera marina L

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

Resumé

Eelgrass (Zostera marina L.) is an important organism in coastal marine waters and is highly likely to encounter exposure to multiple stressors, both anthropogenic contaminants and natural stressors. Here, we exposed eelgrass to a range of Cu concentrations and salinities, and also varied exposure route between sediment and water. Measured endpoints were Cu accumulation in root and leaves, relative growth rate, leaf mortality, chlorophyll concentration, and maximum photosynthetic quantum yield. Cu accumulation from the sediment was translocated to all parts of the plant, while Cu taken up from the water showed a tendency to remain in leaves. Effects on relative growth rate and leaf mortality were found only following uptake of Cu from the sediment. We tested effects of different salinities, acting as multiple stressors, together with Cu, but found only weak effects with little interaction with Cu. Experiments with anthropogenic contaminants that marine plants are mainly exposed to through the sediment should be done using sediment exposure, as the common practice of using only water exposure will lead to underestimation of harmful effects. Future studies should take all relevant factors into consideration, as anthropogenic inputs and natural factors are prone to fluctuations due to e.g., climate change.
SprogEngelsk
TidsskriftHydrobiologia
Vol/bind788
Udgave nummer1
Sider143-155
Antal sider13
ISSN0018-8158
DOI
StatusUdgivet - mar. 2017

Citer dette

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title = "Copper in the sediment: A major stressor for eelgrass, Zostera marina L",
abstract = "Eelgrass (Zostera marina L.) is an important organism in coastal marine waters and is highly likely to encounter exposure to multiple stressors, both anthropogenic contaminants and natural stressors. Here, we exposed eelgrass to a range of Cu concentrations and salinities, and also varied exposure route between sediment and water. Measured endpoints were Cu accumulation in root and leaves, relative growth rate, leaf mortality, chlorophyll concentration, and maximum photosynthetic quantum yield. Cu accumulation from the sediment was translocated to all parts of the plant, while Cu taken up from the water showed a tendency to remain in leaves. Effects on relative growth rate and leaf mortality were found only following uptake of Cu from the sediment. We tested effects of different salinities, acting as multiple stressors, together with Cu, but found only weak effects with little interaction with Cu. Experiments with anthropogenic contaminants that marine plants are mainly exposed to through the sediment should be done using sediment exposure, as the common practice of using only water exposure will lead to underestimation of harmful effects. Future studies should take all relevant factors into consideration, as anthropogenic inputs and natural factors are prone to fluctuations due to e.g., climate change.",
author = "Nielsen, {S{\o}ren Laurentius} and Banta, {Gary Thomas} and Farhan Khan and Annemette Palmqvist",
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journal = "Hydrobiologia",
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Copper in the sediment : A major stressor for eelgrass, Zostera marina L. / Nielsen, Søren Laurentius; Banta, Gary Thomas; Khan, Farhan; Palmqvist, Annemette.

I: Hydrobiologia, Bind 788, Nr. 1, 03.2017, s. 143-155.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

T1 - Copper in the sediment

T2 - Hydrobiologia

AU - Nielsen, Søren Laurentius

AU - Banta, Gary Thomas

AU - Khan, Farhan

AU - Palmqvist, Annemette

PY - 2017/3

Y1 - 2017/3

N2 - Eelgrass (Zostera marina L.) is an important organism in coastal marine waters and is highly likely to encounter exposure to multiple stressors, both anthropogenic contaminants and natural stressors. Here, we exposed eelgrass to a range of Cu concentrations and salinities, and also varied exposure route between sediment and water. Measured endpoints were Cu accumulation in root and leaves, relative growth rate, leaf mortality, chlorophyll concentration, and maximum photosynthetic quantum yield. Cu accumulation from the sediment was translocated to all parts of the plant, while Cu taken up from the water showed a tendency to remain in leaves. Effects on relative growth rate and leaf mortality were found only following uptake of Cu from the sediment. We tested effects of different salinities, acting as multiple stressors, together with Cu, but found only weak effects with little interaction with Cu. Experiments with anthropogenic contaminants that marine plants are mainly exposed to through the sediment should be done using sediment exposure, as the common practice of using only water exposure will lead to underestimation of harmful effects. Future studies should take all relevant factors into consideration, as anthropogenic inputs and natural factors are prone to fluctuations due to e.g., climate change.

AB - Eelgrass (Zostera marina L.) is an important organism in coastal marine waters and is highly likely to encounter exposure to multiple stressors, both anthropogenic contaminants and natural stressors. Here, we exposed eelgrass to a range of Cu concentrations and salinities, and also varied exposure route between sediment and water. Measured endpoints were Cu accumulation in root and leaves, relative growth rate, leaf mortality, chlorophyll concentration, and maximum photosynthetic quantum yield. Cu accumulation from the sediment was translocated to all parts of the plant, while Cu taken up from the water showed a tendency to remain in leaves. Effects on relative growth rate and leaf mortality were found only following uptake of Cu from the sediment. We tested effects of different salinities, acting as multiple stressors, together with Cu, but found only weak effects with little interaction with Cu. Experiments with anthropogenic contaminants that marine plants are mainly exposed to through the sediment should be done using sediment exposure, as the common practice of using only water exposure will lead to underestimation of harmful effects. Future studies should take all relevant factors into consideration, as anthropogenic inputs and natural factors are prone to fluctuations due to e.g., climate change.

U2 - 10.1007/s10750-016-2994-1

DO - 10.1007/s10750-016-2994-1

M3 - Journal article

VL - 788

SP - 143

EP - 155

JO - Hydrobiologia

JF - Hydrobiologia

SN - 0018-8158

IS - 1

ER -