Effects of the invasive polychaete, Marenzelleria viridis, on the fate of sediment associated pollutants – a microcosm study with 14C-labelled pyrene

Gary Thomas Banta, Jenny Elisabet Hedman

Publikation: KonferencebidragKonferenceabstrakt til konferenceForskning

Resumé

The deep burrowing, invasive spionid polychaete, Marenzelleria spp. (3 sibling species), is rapidly expanding its range in the Baltic Sea ecosystem, increasing the depth of the bioturbated zone dramatically relative to the native benthic community. One concern is the effect of this invasion on the fate of deeply buried sediment-associated pollutants in the historically polluted Baltic Sea. We report here the results of an experimental microcosm study examining the fate of 14C radiolabelled pyrene (a 4-ring PAH) in sediment microcosms with and without Marenzelleria viridis. We also investigated the impact of depositing labile organic matter (seston) on the sediment surface. Worms clearly enhanced the release of pyrene and degradation metabolites from the sediment to the overlying water in all cases, mostly due to the initial flushing of sediments during burrow establishment. Surprisingly, there was no clear effect of worms on the mineralization of pyrene to CO2, where a complicated interaction between bioturbation and the presence of labile organic matter was observed. Furthermore, the ultimate fate of the increased release of sediment-associated pyrene and its metabolites to the water is unknown.
OriginalsprogEngelsk
Publikationsdatoaug. 2011
Antal sider1
StatusUdgivet - aug. 2011
BegivenhedNereis Park Conference: Benthic Processes in a Globally Changing Environment - Kristineberg, Fiskebäckskil, Sverige
Varighed: 29 aug. 201131 aug. 2011
Konferencens nummer: 3

Konference

KonferenceNereis Park Conference
Nummer3
LokationKristineberg
LandSverige
ByFiskebäckskil
Periode29/08/201131/08/2011

Emneord

  • bioturbation
  • pollutant
  • Polychaete
  • PAHs

Citer dette

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title = "Effects of the invasive polychaete, Marenzelleria viridis, on the fate of sediment associated pollutants – a microcosm study with 14C-labelled pyrene",
abstract = "The deep burrowing, invasive spionid polychaete, Marenzelleria spp. (3 sibling species), is rapidly expanding its range in the Baltic Sea ecosystem, increasing the depth of the bioturbated zone dramatically relative to the native benthic community. One concern is the effect of this invasion on the fate of deeply buried sediment-associated pollutants in the historically polluted Baltic Sea. We report here the results of an experimental microcosm study examining the fate of 14C radiolabelled pyrene (a 4-ring PAH) in sediment microcosms with and without Marenzelleria viridis. We also investigated the impact of depositing labile organic matter (seston) on the sediment surface. Worms clearly enhanced the release of pyrene and degradation metabolites from the sediment to the overlying water in all cases, mostly due to the initial flushing of sediments during burrow establishment. Surprisingly, there was no clear effect of worms on the mineralization of pyrene to CO2, where a complicated interaction between bioturbation and the presence of labile organic matter was observed. Furthermore, the ultimate fate of the increased release of sediment-associated pyrene and its metabolites to the water is unknown.",
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author = "Banta, {Gary Thomas} and Hedman, {Jenny Elisabet}",
year = "2011",
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note = "null ; Conference date: 29-08-2011 Through 31-08-2011",

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Effects of the invasive polychaete, Marenzelleria viridis, on the fate of sediment associated pollutants – a microcosm study with 14C-labelled pyrene. / Banta, Gary Thomas; Hedman, Jenny Elisabet.

2011. Abstract fra Nereis Park Conference, Fiskebäckskil, Sverige.

Publikation: KonferencebidragKonferenceabstrakt til konferenceForskning

TY - ABST

T1 - Effects of the invasive polychaete, Marenzelleria viridis, on the fate of sediment associated pollutants – a microcosm study with 14C-labelled pyrene

AU - Banta, Gary Thomas

AU - Hedman, Jenny Elisabet

PY - 2011/8

Y1 - 2011/8

N2 - The deep burrowing, invasive spionid polychaete, Marenzelleria spp. (3 sibling species), is rapidly expanding its range in the Baltic Sea ecosystem, increasing the depth of the bioturbated zone dramatically relative to the native benthic community. One concern is the effect of this invasion on the fate of deeply buried sediment-associated pollutants in the historically polluted Baltic Sea. We report here the results of an experimental microcosm study examining the fate of 14C radiolabelled pyrene (a 4-ring PAH) in sediment microcosms with and without Marenzelleria viridis. We also investigated the impact of depositing labile organic matter (seston) on the sediment surface. Worms clearly enhanced the release of pyrene and degradation metabolites from the sediment to the overlying water in all cases, mostly due to the initial flushing of sediments during burrow establishment. Surprisingly, there was no clear effect of worms on the mineralization of pyrene to CO2, where a complicated interaction between bioturbation and the presence of labile organic matter was observed. Furthermore, the ultimate fate of the increased release of sediment-associated pyrene and its metabolites to the water is unknown.

AB - The deep burrowing, invasive spionid polychaete, Marenzelleria spp. (3 sibling species), is rapidly expanding its range in the Baltic Sea ecosystem, increasing the depth of the bioturbated zone dramatically relative to the native benthic community. One concern is the effect of this invasion on the fate of deeply buried sediment-associated pollutants in the historically polluted Baltic Sea. We report here the results of an experimental microcosm study examining the fate of 14C radiolabelled pyrene (a 4-ring PAH) in sediment microcosms with and without Marenzelleria viridis. We also investigated the impact of depositing labile organic matter (seston) on the sediment surface. Worms clearly enhanced the release of pyrene and degradation metabolites from the sediment to the overlying water in all cases, mostly due to the initial flushing of sediments during burrow establishment. Surprisingly, there was no clear effect of worms on the mineralization of pyrene to CO2, where a complicated interaction between bioturbation and the presence of labile organic matter was observed. Furthermore, the ultimate fate of the increased release of sediment-associated pyrene and its metabolites to the water is unknown.

KW - bioturbation

KW - pollutant

KW - Polychaete

KW - PAHs

M3 - Conference abstract for conference

ER -