Abstract
The diffusive oxygen uptake (DOU) of sediments inhabited by Chironomus riparius and Tubifex tubifex was investigated using a planar oxygen optode device, and complemented by measurements of bioturbation activity. Additional experiments were performed within contaminated sediments to assess the impact of uranium on these processes. After 72h, the two invertebrate species significantly increased the DOU of sediments (13-14%), and no temporal variation occurred afterwards. Within contaminated sediments, it was already 24% higher before the introduction of the organisms, suggesting that uranium modified the sediment biogeochemistry. Although the two species firstly reacted by avoidance of contaminated sediment, they finally colonized it. Their bioturbation activity was reduced but, for T. tubifex, it remained sufficient to induce a release of uranium to the water column and an increase of the DOU (53%). These results highlight the necessity of further investigations to take into account the interactions between bioturbation, microbial metabolism and pollutants.
References
Sep 5, 1968·Annals of the New York Academy of Sciences·L B Edwards, C E Palmer
Mar 27, 1998·Ecotoxicology and Environmental Safety·M MellerB Streit
Jun 17, 1998·Archives of Environmental Contamination and Toxicology·C W West, G T Ankley
Jul 28, 1999·Applied Microbiology and Biotechnology·D H Nies
Oct 5, 2002·Journal of Environmental Radioactivity·J C LozanoF Vera Tomé
Jun 14, 2003·TheScientificWorldJournal·Scott J Markich
Dec 2, 2004·Environmental Pollution·F Mermillod-BlondinJ Gibert
Jan 13, 2006·Ecotoxicology and Environmental Safety·T K Gyedu-Ababio, D Baird
May 18, 2006·Annual Review of Microbiology·Judy D Wall, Lee R Krumholz
Aug 15, 2006·Environmental Pollution·Peter HeiningerWalter Traunspurger
Sep 30, 2006·Environmental Science & Technology·Lubos PolereckyPeter Stief
Jan 20, 2007·FEMS Microbiology Ecology·Denise M AkobJoel E Kostka
Mar 6, 2007·The Journal of Experimental Biology·Jane W BehrensRonnie N Glud
Aug 7, 2007·Chemosphere·Géraldine NogaroJanine Gibert
Aug 28, 2007·Applied Radiation and Isotopes : Including Data, Instrumentation and Methods for Use in Agriculture, Industry and Medicine·A KurnazU Cevik
Nov 13, 2007·Chemosphere·Victor DiasJean-Marc Bonzom
Jun 17, 2008·Ecotoxicology and Environmental Safety·Sandra LagauzèreJean-Marc Bonzom
Citations
Mar 24, 2012·Environmental Science and Pollution Research International·Hela LouatiOlivier Pringault
Feb 6, 2016·Environmental Science & Technology·Elvio D AmatoDianne F Jolley
Jun 30, 2015·The Science of the Total Environment·Yi HeDongsheng Wang
Aug 5, 2014·Chemosphere·Agathe BourLaury Gauthier
Mar 19, 2013·The Science of the Total Environment·F Mermillod-BlondinL Simon
Jun 4, 2016·Scientific Reports·Viktor BaranovStefan Krause
Jun 14, 2016·The Science of the Total Environment·M PigneretF Hervant
Jun 21, 2017·Environmental Microbiology·Brodie SutcliffeIan T Paulsen
Nov 4, 2020·Environmental Pollution·Jiqiang YangShuqing An