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Influence of Chironomus riparius (Diptera, Chironomidae) and Tubifex tubifex (Annelida, Oligochaeta) on oxygen uptake by sediments. Consequences of uranium contamination
- Source :
- Chemosphere, Chemosphere, Elsevier, 2008, 157, pp.1234-1242. ⟨10.1016/j.envpol.2008.12.004⟩, Environmental Pollution, Environmental Pollution, Elsevier, 2009, 157, pp.1234-1242, Environmental Pollution, 2009, 157 (4), pp.1234-1242. ⟨10.1016/j.envpol.2008.12.004⟩
- Publication Year :
- 2009
- Publisher :
- Elsevier, 2009.
-
Abstract
- International audience; 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 72 h, 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.
- Subjects :
- 0106 biological sciences
Geologic Sediments
Water Pollutants, Radioactive
Health, Toxicology and Mutagenesis
ved/biology.organism_classification_rank.species
Fresh Water
010501 environmental sciences
Toxicology
01 natural sciences
Chironomidae
Sediments
Water column
Animals
Oligochaeta
Water pollution
ComputingMilieux_MISCELLANEOUS
0105 earth and related environmental sciences
[SDV.EE]Life Sciences [q-bio]/Ecology, environment
Chironomus riparius
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere
Ecologie, Environnement
Freshwater macroinvertebrates
biology
Ecology
[CHIM.ORGA]Chemical Sciences/Organic chemistry
ved/biology
010604 marine biology & hydrobiology
Sediment
General Medicine
biology.organism_classification
Pollution
Tubifex
Oxygen
Chimie organique
Diffusive oxygen uptake
Heavy metals
13. Climate action
Tubifex tubifex
Environmental chemistry
Uranium
Bioturbation
Subjects
Details
- Language :
- English
- ISSN :
- 02697491, 00456535, and 18736424
- Database :
- OpenAIRE
- Journal :
- Environmental Pollution
- Accession number :
- edsair.doi.dedup.....ae56f9a924b77463915db2a3d5f7fd2d