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Effects from log-yard stormwater runoff on the microalgae Scenedesmus subspicatus: Intra-storm magnitude and variability
Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.
Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences.ORCID iD: 0000-0002-7920-8001
Linnaeus University, Faculty of Science and Engineering, School of Natural Sciences. (Plankton Ecology)
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2011 (English)In: Journal of Hazardous Materials, ISSN 0304-3894, E-ISSN 1873-3336, Vol. 185, no 2-3, p. 732-739Article in journal (Refereed) Published
Abstract [en]

This paper describes the effects posed by stormwater runoff from an industrial log-yard on the microalgae Scenedesmus subspicatus. The effects of stormwater runoff sampled during two rain events were determined by exposing S. subspicatus cells to different concentrations (% v:v) of each sample. The effects were measured as the percentage change in growth rates in relation to a control culture after exposure times of 24, 48, 72 and 96h. The runoff from the first rain event had no negative effects to S.subspicatus, posing in most cases growth stimulation, whereas the runoff from the second rain event inhibited algae growth. Differences in runoff physico-chemical characteristics combined with the hydrological factors of each rain event explained these opposite effects. The hypothesis of toxic first flush phenomenon was confirmed in the second rain event on the basis of normalized inhibitory effects and runoff volume. It was found that 42, 51 and 50% of the inhibitory effects during exposures of 24, 48 and 72h are associated with the initial 4% of the total discharged volume. The fact that negative effects were observed in the two runoff events analyzed here, raises concern about the potential environmental threats posed by runoff originated from wood-based industrial areas during the entire hydrological year.

Place, publisher, year, edition, pages
2011. Vol. 185, no 2-3, p. 732-739
Keywords [en]
toxicity, first flush, wood-industry, stormwater, growth inhibition
National Category
Natural Sciences
Research subject
Natural Science, Environmental Science
Identifiers
URN: urn:nbn:se:lnu:diva-7136DOI: 10.1016/j.jhazmat.2010.09.080Scopus ID: 2-s2.0-78649968690OAI: oai:DiVA.org:lnu-7136DiVA, id: diva2:343165
Available from: 2010-08-12 Created: 2010-08-12 Last updated: 2017-12-12Bibliographically approved

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Kaczala, FabioSalomon, PauloMarques, MarciaGranéli, EdnaHogland, William

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