Benthic bioturbation: A canary in the mine for the retention and release of metals from estuarine sediments

Diego Barcellos; Sebastian S.K. Jensen; Angelo F. Bernardino; Fabrício A. Gabriel; Tiago O. Ferreira; Cintia O. Quintana

doi:10.1016/j.marpolbul.2021.112912

Benthic bioturbation: A canary in the mine for the retention and release of metals from estuarine sediments

Diego Barcellos^*, Sebastian S.K. Jensen, Angelo F. Bernardino, Fabrício A. Gabriel, Tiago O. Ferreira, Cintia O. Quintana

^*Kontaktforfatter

Biologisk Institut

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

Abstrakt

After the largest mining tailings spill in Brazil, the Rio Doce estuarine ecosystem was severely impacted by metal contamination. In a 28-day laboratory experiment, we examined the effects of the polychaeta Laeonereis sp. on fluxes of oxygen and metal across the sediment-water interface. The density-dependent effect of Laeonereis sp. in the oxygen and metal fluxes was tested at low and high (74 and 222 ind m⁻², respectively) densities, and compared with defaunated controls. The higher worm density had an amplified effect on the oxygen flux, sediment uptake of Al and Mn, and Fe oxidation compared with the control, but no significant effects on other metals (Ba, Cd, Co, Cr, Cu, Ni, and Zn). Higher worm density increased the oxidation of Fe phases, but no effect in the solid phase of other metals. Consequently, Laeonereis sp. bioturbation prevents the reduction of Fe phases and the release of metal-bound-contaminants to estuarine systems.

Originalsprog	Engelsk
Artikelnummer	112912
Tidsskrift	Marine Pollution Bulletin
Vol/bind	172
ISSN	0025-326X
DOI	https://doi.org/10.1016/j.marpolbul.2021.112912
Status	Udgivet - nov. 2021

Bibliografisk note

Funding Information:
This work was financially supported by the Funda??o de Amparo a Pesquisa e Inova??o do Esp?rito Santo (FAPES, 77683544/17), Conselho Nacional de Pesquisa e Desenvolvimento (CNPq, 305996/2018-5) and Coordena??o de Aperfei?oamento de Pessoal de N?vel Superior (CAPES) to AFB and TOF. The authors are also grateful for the financial support from the S?o Paulo Research Foundation (FAPESP, 2019/02855-0 to DB; 2019/19987-6 and 2018/08408-2 to TOF).

Funding Information:
This work was financially supported by the Fundação de Amparo a Pesquisa e Inovação do Espírito Santo ( FAPES , 77683544/17 ), Conselho Nacional de Pesquisa e Desenvolvimento ( CNPq , 305996/2018-5 ) and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) to AFB and TOF. The authors are also grateful for the financial support from the São Paulo Research Foundation (FAPESP, 2019/02855-0 to DB; 2019/19987-6 and 2018/08408-2 to TOF).

Publisher Copyright:
© 2021 Elsevier Ltd

Dokumenter og links

10.1016/j.marpolbul.2021.112912

Citationsformater

@article{189057f925674b009be18c2c14f2218a,

title = "Benthic bioturbation: A canary in the mine for the retention and release of metals from estuarine sediments",

abstract = "After the largest mining tailings spill in Brazil, the Rio Doce estuarine ecosystem was severely impacted by metal contamination. In a 28-day laboratory experiment, we examined the effects of the polychaeta Laeonereis sp. on fluxes of oxygen and metal across the sediment-water interface. The density-dependent effect of Laeonereis sp. in the oxygen and metal fluxes was tested at low and high (74 and 222 ind m−2, respectively) densities, and compared with defaunated controls. The higher worm density had an amplified effect on the oxygen flux, sediment uptake of Al and Mn, and Fe oxidation compared with the control, but no significant effects on other metals (Ba, Cd, Co, Cr, Cu, Ni, and Zn). Higher worm density increased the oxidation of Fe phases, but no effect in the solid phase of other metals. Consequently, Laeonereis sp. bioturbation prevents the reduction of Fe phases and the release of metal-bound-contaminants to estuarine systems.",

keywords = "Benthic fauna, Estuarine sediments, iron oxides, Laeonereis, Redox",

author = "Diego Barcellos and Jensen, {Sebastian S.K.} and Bernardino, {Angelo F.} and Gabriel, {Fabr{\'i}cio A.} and Ferreira, {Tiago O.} and Quintana, {Cintia O.}",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

month = nov,

doi = "10.1016/j.marpolbul.2021.112912",

language = "English",

volume = "172",

journal = "Marine Pollution Bulletin",

issn = "0025-326X",

publisher = "Elsevier",

}

TY - JOUR

T1 - Benthic bioturbation

T2 - A canary in the mine for the retention and release of metals from estuarine sediments

AU - Barcellos, Diego

AU - Jensen, Sebastian S.K.

AU - Bernardino, Angelo F.

AU - Gabriel, Fabrício A.

AU - Ferreira, Tiago O.

AU - Quintana, Cintia O.

PY - 2021/11

Y1 - 2021/11

N2 - After the largest mining tailings spill in Brazil, the Rio Doce estuarine ecosystem was severely impacted by metal contamination. In a 28-day laboratory experiment, we examined the effects of the polychaeta Laeonereis sp. on fluxes of oxygen and metal across the sediment-water interface. The density-dependent effect of Laeonereis sp. in the oxygen and metal fluxes was tested at low and high (74 and 222 ind m−2, respectively) densities, and compared with defaunated controls. The higher worm density had an amplified effect on the oxygen flux, sediment uptake of Al and Mn, and Fe oxidation compared with the control, but no significant effects on other metals (Ba, Cd, Co, Cr, Cu, Ni, and Zn). Higher worm density increased the oxidation of Fe phases, but no effect in the solid phase of other metals. Consequently, Laeonereis sp. bioturbation prevents the reduction of Fe phases and the release of metal-bound-contaminants to estuarine systems.

AB - After the largest mining tailings spill in Brazil, the Rio Doce estuarine ecosystem was severely impacted by metal contamination. In a 28-day laboratory experiment, we examined the effects of the polychaeta Laeonereis sp. on fluxes of oxygen and metal across the sediment-water interface. The density-dependent effect of Laeonereis sp. in the oxygen and metal fluxes was tested at low and high (74 and 222 ind m−2, respectively) densities, and compared with defaunated controls. The higher worm density had an amplified effect on the oxygen flux, sediment uptake of Al and Mn, and Fe oxidation compared with the control, but no significant effects on other metals (Ba, Cd, Co, Cr, Cu, Ni, and Zn). Higher worm density increased the oxidation of Fe phases, but no effect in the solid phase of other metals. Consequently, Laeonereis sp. bioturbation prevents the reduction of Fe phases and the release of metal-bound-contaminants to estuarine systems.

KW - Benthic fauna

KW - Estuarine sediments

KW - iron oxides

KW - Laeonereis

KW - Redox

U2 - 10.1016/j.marpolbul.2021.112912

DO - 10.1016/j.marpolbul.2021.112912

M3 - Journal article

C2 - 34526261

AN - SCOPUS:85114441670

VL - 172

JO - Marine Pollution Bulletin

JF - Marine Pollution Bulletin

SN - 0025-326X

M1 - 112912

ER -

Benthic bioturbation: A canary in the mine for the retention and release of metals from estuarine sediments

Abstrakt

Bibliografisk note

Dokumenter og links

Fingeraftryk

Citationsformater