Mercury uptake and transport in the marine environment

Helen Keenan, Joy Leaner

Research output: Contribution to conferencePoster

Abstract

It has been widely reported that methylation of mercury (Hg) into its toxic methylmercury (MeHg) form occurs by biotic and abiotic processes, and that the transformation processes are influenced by several factors such as pH, temperature, sulphate deposition, and availability of biodegradable organic carbon. Although the marine environment acts as a sink for Hg and its compounds, it is probably one of the least understood in terms of Hg transformation processes and its bioavailability and bioaccumulation in biota. This paper reviewed the pathways of Hg in terms of its speciation, uptake and transport in the marine environment and associated biota. The review indicates a paucity of data on Hg in the marine environment. As can be expected piscivorous predators in the marine environment have relatively higher MeHg concentrations in blood than non-piscivorous animals in the terrestrial environment. A comparison of Hg exposure and impacts in New Zealand, Seychelles and the Faroe Island is also made, and recommendations for further research in the marine environment are presented.

Conference

Conference10th International Conference on Mercury as a Global Pollutant
CountryCanada
CityHalifax
Period24/07/1129/07/11

Fingerprint

marine environment
biota
terrestrial environment
methylation
methylmercury
bioaccumulation
bioavailability
blood
organic carbon
mercury
predator
sulfate
animal
temperature

Keywords

  • marine environment
  • mercury
  • pollutants

Cite this

Keenan, H., & Leaner, J. (2011). Mercury uptake and transport in the marine environment. Poster session presented at 10th International Conference on Mercury as a Global Pollutant, Halifax, Canada.
Keenan, Helen ; Leaner, Joy. / Mercury uptake and transport in the marine environment. Poster session presented at 10th International Conference on Mercury as a Global Pollutant, Halifax, Canada.
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abstract = "It has been widely reported that methylation of mercury (Hg) into its toxic methylmercury (MeHg) form occurs by biotic and abiotic processes, and that the transformation processes are influenced by several factors such as pH, temperature, sulphate deposition, and availability of biodegradable organic carbon. Although the marine environment acts as a sink for Hg and its compounds, it is probably one of the least understood in terms of Hg transformation processes and its bioavailability and bioaccumulation in biota. This paper reviewed the pathways of Hg in terms of its speciation, uptake and transport in the marine environment and associated biota. The review indicates a paucity of data on Hg in the marine environment. As can be expected piscivorous predators in the marine environment have relatively higher MeHg concentrations in blood than non-piscivorous animals in the terrestrial environment. A comparison of Hg exposure and impacts in New Zealand, Seychelles and the Faroe Island is also made, and recommendations for further research in the marine environment are presented.",
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Keenan, H & Leaner, J 2011, 'Mercury uptake and transport in the marine environment' 10th International Conference on Mercury as a Global Pollutant, Halifax, Canada, 24/07/11 - 29/07/11, .

Mercury uptake and transport in the marine environment. / Keenan, Helen; Leaner, Joy.

2011. Poster session presented at 10th International Conference on Mercury as a Global Pollutant, Halifax, Canada.

Research output: Contribution to conferencePoster

TY - CONF

T1 - Mercury uptake and transport in the marine environment

AU - Keenan, Helen

AU - Leaner, Joy

PY - 2011/7/28

Y1 - 2011/7/28

N2 - It has been widely reported that methylation of mercury (Hg) into its toxic methylmercury (MeHg) form occurs by biotic and abiotic processes, and that the transformation processes are influenced by several factors such as pH, temperature, sulphate deposition, and availability of biodegradable organic carbon. Although the marine environment acts as a sink for Hg and its compounds, it is probably one of the least understood in terms of Hg transformation processes and its bioavailability and bioaccumulation in biota. This paper reviewed the pathways of Hg in terms of its speciation, uptake and transport in the marine environment and associated biota. The review indicates a paucity of data on Hg in the marine environment. As can be expected piscivorous predators in the marine environment have relatively higher MeHg concentrations in blood than non-piscivorous animals in the terrestrial environment. A comparison of Hg exposure and impacts in New Zealand, Seychelles and the Faroe Island is also made, and recommendations for further research in the marine environment are presented.

AB - It has been widely reported that methylation of mercury (Hg) into its toxic methylmercury (MeHg) form occurs by biotic and abiotic processes, and that the transformation processes are influenced by several factors such as pH, temperature, sulphate deposition, and availability of biodegradable organic carbon. Although the marine environment acts as a sink for Hg and its compounds, it is probably one of the least understood in terms of Hg transformation processes and its bioavailability and bioaccumulation in biota. This paper reviewed the pathways of Hg in terms of its speciation, uptake and transport in the marine environment and associated biota. The review indicates a paucity of data on Hg in the marine environment. As can be expected piscivorous predators in the marine environment have relatively higher MeHg concentrations in blood than non-piscivorous animals in the terrestrial environment. A comparison of Hg exposure and impacts in New Zealand, Seychelles and the Faroe Island is also made, and recommendations for further research in the marine environment are presented.

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KW - mercury

KW - pollutants

UR - http://mercury2011.org/program-ps13

M3 - Poster

ER -

Keenan H, Leaner J. Mercury uptake and transport in the marine environment. 2011. Poster session presented at 10th International Conference on Mercury as a Global Pollutant, Halifax, Canada.