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Response of marine ...
Response of marine benthic fauna to thin-layer capping with activated carbon in a large-scale field experiment in the Grenland fjords, Norway
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- Gunnarsson, Jonas S. (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik,Svensk Ekologikonsult, Sweden
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- Raymond, Caroline (författare)
- Stockholms universitet,Institutionen för ekologi, miljö och botanik
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- Agrenius, Stefan, 1948 (författare)
- Gothenburg University,Göteborgs universitet,Institutionen för marina vetenskaper,Department of marine sciences
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Schaanning, M. (författare)
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Cornelissen, G. (författare)
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Gunnarsson, J. S. (författare)
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Samuelsson, G. S. (författare)
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(creator_code:org_t)
- 2017-04-18
- 2017
- Engelska.
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Ingår i: Environmental Science and Pollution Research. - : Springer Science and Business Media LLC. - 0944-1344 .- 1614-7499. ; 24:16, s. 14218-14233
- Relaterad länk:
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https://link.springe...
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https://doi.org/10.1...
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https://gup.ub.gu.se...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- A field experiment with thin-layer capping was conducted in the Grenland fjords, Norway, for remediation in situ of mercury and dioxin-contaminated sediments. Experimental fields at 30 and 95 m depth were capped with (i) powdered activated carbon (AC) mixed with clay (AC+clay), (ii) clay, and (iii) crushed limestone. Ecological effects on the benthic community and species-feeding guilds were studied 1 and 14 months after capping, and a total of 158 species were included in the analyses. The results show that clay and limestone had only minor effects on the benthic community, while AC+clay caused severe perturbations. AC+clay reduced the abundance, biomass, and number of species by up to 90% at both 30 and 95 m depth, and few indications of recovery were found during the period of this investigation. The negative effects of AC+clay were observed on a wide range of species with different feeding strategies, although the suspension feeding brittle star Amphiura filiformis was particularly affected. Even though activated carbon is effective in reducing sediment-to-water fluxes of dioxins and other organic pollutants, this study shows that capping with powdered AC can lead to substantial disturbances to the benthic community.
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences (hsv//eng)
Nyckelord
- Benthic ecology
- Macrofauna
- Benthic community
- Feeding guilds
- Contaminated sediment
- Remediation
- in-situ remediation
- long-term recovery
- polychlorinated-biphenyls
- contaminated sediments
- aquaculture therapeutants
- neanthes-arenaceodentata
- reduces bioaccumulation
- lumbriculus-variegatus
- trondheim harbor
- macoma-balthica
- Environmental Sciences & Ecology
- Benthic ecology
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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