Hexabromocyclododecane affects benthic-pelagic coupling in an experimental ecosystem
2015 (English)In: Environmental Pollution, ISSN 0269-7491, E-ISSN 1873-6424, Vol. 206, 306-314 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2015. Vol. 206, 306-314 p.
Baltic sea, Brominated flame retardants, HBCDD, Indirect ecosystem effects, Mesocosm study, Structural equation modelling
IdentifiersURN: urn:nbn:se:sh:diva-28180DOI: 10.1016/j.envpol.2015.07.012ISI: 000366235700038PubMedID: 26219072ScopusID: 2-s2.0-84937778260OAI: oai:DiVA.org:sh-28180DiVA: diva2:851090