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Lafont, M.; Camus, J.C.; Fournier, Alain; Sourp, Eric

doi:10.1023/a:1011413806318

Cited by 20 publications

(1 citation statement)

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“…It may be used as a standalone tool when fine sediment habitats cover more than 60% of the bottom at a given site. If fine sediments do not predominate, it is better to use a harmonization system grouping the IOBS index and other biotic indices (invertebrates, diatoms and fish, Lafont et al, 2001). The examples of experimental sites given in Figure 1 include both urban and rural (natural) sites.…”

Section: Experience With Bioindicesmentioning

confidence: 99%

Bioassessment of wet-weather pollution impacts on fine sediments in urban waters by benthic indices and the sediment quality triad

Lafont¹,

Grapentine

Rochfort

et al. 2007

Water Science and Technology

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Benthic invertebrate assessments can be used to gauge the impact of urban wet-weather flows in receiving waters. Experiences from Cemagref in France have shown that standardized benthic indices (e.g. Oligochaete Index of Sediment Bioindication - IOBS) can be used to reliably determine the ecological status of urban streams and can be incorporated into the new European Water Framework Directive. The Canadian studies on streams and stormwater ponds using chemical analyses, benthic toxicity testing and benthic invertebrate community structure (i.e. the sediment quality triad) comparisons have shown that toxicity was more likely to occur in ponds at sites with higher concentrations of heavy metals and heavier polycyclic aromatic hydrocarbons, and at greater water depths, where fine sediments from urban runoff accumulated. A more comprehensive evaluation of wet-weather flow impacts could be obtained by combining approaches from both countries.

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Section: Experience With Bioindicesmentioning

confidence: 99%

Bioassessment of wet-weather pollution impacts on fine sediments in urban waters by benthic indices and the sediment quality triad

Lafont¹,

Grapentine

Rochfort

et al. 2007

Water Science and Technology

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Oligochaete assemblages in the hyporheic zone and coarse surface sediments: their importance for understanding of ecological functioning of watercourses

Lafont¹,

Vivier

2006

Aquatic Oligochaete Biology IX

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Lafont, M. and Vivier, A. (2006). Oligochaete assemblages in the hyporheic zone and coarse surface sediments: their importance for understanding of ecological functioning of watercourses. Hydrobiologia. 564: 171-181.Published version available online at http://www.springerlink.com/ DOI: 10.1007DOI: 10. /s10750-005-1717 This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.Nous mettons ce document à disposition sous cette forme dans le but d'assurer la plus grande diffusion de nos travaux scientifiques et techniques, en particulier auprès des étudiants. Le copyright et tous les droits restent la propriété des auteurs et des éditeurs. Nous prions chaque personne utilisant ces informations de respecter les droits et copyright des auteurs et éditeurs. Dans la plupart des cas, ces travaux ne peuvent être réexpédiés sans la permission explicite du détenteur des droits. This paper has not been submitted elsewhere in identical or similar form, nor will it be during the first three months after its submission to Hydrobiologia. 2 Abstract.The hyporheic zone and its interactions with coarse surface sediments is increasingly reported by aquatic ecologists because the water exchanges between surface and subsurface are important factors for the understanding of the ecosystem functioning. However, the hyproheic oligochaete assemblages have received less attention than other assemblages such as crustaceans. In addition, studies investigating the incidence of pollution in watercourses have mostly focused on the benthic zone and have neglected the hyporheic zone. Some examples are given from an unpolluted glacial river (Roseg), polluted plains rivers (Moselle, Rhône) and a protected wetland in an urbanized environment. The hyporheic zone kept the memory of past and present incidences of pollution, in particular when downwellings of polluted surface waters to the hyporheic zone predominated. The Active hydrologicExchange Describers between surface and subsurface (AED oligochaete species) were the same in the glacial river Roseg, the rivers Rhône and Moselle and the urbanized wetland. The predominance of pollution-tolerant species like Limnodrilus hoffmeisteri was observed in polluted groundwater as well as in polluted surface coarse sediments. Moreover, the urbanized wetland exhibited a high species richness, suggesting that the hyporheic zone is a reservoir of species. The oligochaete communities enable biologists to simultaneously assess the pollution incidence, the permeability of coarse habitats, the water exchanges between surface and subsurface, and give an approximate measure of the metabolic activities in the sediments. Consequently, the simultaneous study of surface and hypo...

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Aquatic Oligochaete Biology VIII

Verdonschot¹,

Wang²,

Pinder³

et al. 2001

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Cited by 20 publications

References 19 publications

Bioassessment of wet-weather pollution impacts on fine sediments in urban waters by benthic indices and the sediment quality triad

Bioassessment of wet-weather pollution impacts on fine sediments in urban waters by benthic indices and the sediment quality triad

Oligochaete assemblages in the hyporheic zone and coarse surface sediments: their importance for understanding of ecological functioning of watercourses

Aquatic Oligochaete Biology VIII

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