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Hexabromocyclododecane affects benthic-pelagic coupling in an experimental ecosystem

Bradshaw, Clare (author)
Södertörns högskola,Institutionen för naturvetenskap, miljö och teknik,Stockholm University
Näslund, J. (author)
AquaBiota Water Research, Stockholm
Hansen, J. (author)
AquaBiota Water Research, Stockholm / Stockholm University
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Kozlowsky-Suzuki, B. (author)
Universidade Federal Do Estado Do Rio de Janeiro, Brazil
Sundström, B. (author)
Gustafsson, Kerstin (author)
Södertörns högskola,Institutionen för naturvetenskap, miljö och teknik
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 (creator_code:org_t)
Elsevier BV, 2015
2015
English.
In: Environmental Pollution. - : Elsevier BV. - 0269-7491 .- 1873-6424. ; 206, s. 306-314
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Hexabromocyclododecane (HBCDD) is an additive brominated flame retardant and a recognized PBT chemical. However, little is known about its effects on coastal species, and even less on ecosystem effects. We investigated the dose-response effects of HBCDD over 8 months in 1000 L experimental mesocosms assembled from coastal Baltic Sea ecosystem components. HBCDD was added via spiked plankton material and a range of structural and functional endpoints were measured during the experiment. Increasing HBCDD concentration decreased the biomass of large Macoma balthica, resulting in a decreased recirculation of nutrients to the water. Changes in plankton communities were also observed, either due to direct toxic HBCDD effects or indirect via changes in benthic-pelagic coupling of nutrients. Such complex ecosystem responses can only be quantified and understood by using realistic experimental set-ups, and including knowledge of system-specific ecological interactions. This is the first study of HBCDD effects on ecosystem level.

Subject headings

NATURVETENSKAP  -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
NATURAL SCIENCES  -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)

Keyword

Baltic sea
Brominated flame retardants
HBCDD
Indirect ecosystem effects
Mesocosm study
Structural equation modelling

Publication and Content Type

ref (subject category)
art (subject category)

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