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Titolo:
Persistence of the effects of Jet-A in a microcosm with releases from the sediment
Autore:
Sandberg, RS; Landis, WG;
Indirizzi:
Western Washington Univ, Huxley Coll Environm Studies, Inst Environm Toxicol & Chem, Bellingham, WA 98225 USA Western Washington Univ Bellingham WA USA 98225 Bellingham, WA 98225 USA
Titolo Testata:
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
fascicolo: 9, volume: 20, anno: 2001,
pagine: 1942 - 1950
SICI:
0730-7268(200109)20:9<1942:POTEOJ>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
COMMUNITY CONDITIONING HYPOTHESIS; MACROPHYTE-DOMINATED MESOCOSMS; ACTIVE INGREDIENT CHLORPYRIFOS; OUTDOOR EXPERIMENTAL DITCHES; ECOTOXICOLOGICAL FIELD; ECOSYSTEM METABOLISM; PULSED TREATMENT; LEVEL ANALYSIS; RESPONSES; BIOASSAYS;
Keywords:
Jet-A; sediment; mixed flask culture microcosm; multivariate analysis; community conditioning;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
43
Recensione:
Indirizzi per estratti:
Indirizzo: Landis, WG Western Washington Univ, Huxley Coll Environm Studies, Inst Environm Toxicol & Chem, MS 9180, Bellingham, WA 98225 USA Western Washington Univ MS 9180 Bellingham WA USA 98225 225 USA
Citazione:
R.S. Sandberg e W.G. Landis, "Persistence of the effects of Jet-A in a microcosm with releases from the sediment", ENV TOX CH, 20(9), 2001, pp. 1942-1950

Abstract

This study investigates both the methods and the multispecies and functional level effects of a release of a complex hydrocarbon mixture from sediments using a 60-d modified mixed flask culture (MFC) microcosm. Neat Jet-A was injected and mixed into the sediment with one nondosed and three dosed concentrations. Univariate and multivariate statistical and graphical techniques were used to detect patterns in the data. A slow release of the test material from the spiked sediment layer was obtained, and constituents of Jet-A were detected. Functional parameters (such as pH) were generally better at determining treatment groups than structural parameters (population densities). Analysis of the ability of the various parameters to detect treatment differences confirms that there, is not one best indicator for the status of an ecological structure. Transient but statistically significant outcomes were seen at initial treatment concentrations as low as 2 mul/L. The higher concentration treatment groups could be identified as distinguished from nondosed or lower treatments at the end of the 63-d experiment. Each of the three multivariate techniques differed in their ability to distinguish treatment groups during the course of the experiment.

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Documento generato il 20/09/20 alle ore 06:22:43