Evaluation of a new battery of toxicity tests for boreal forest soils: Assessment of the impact of hydrocarbons and salts
Identifieur interne : 001436 ( Main/Exploration ); précédent : 001435; suivant : 001437Evaluation of a new battery of toxicity tests for boreal forest soils: Assessment of the impact of hydrocarbons and salts
Auteurs : Juliska I. Princz [Canada] ; Mary Moody [Canada] ; Christopher Fraser [Canada] ; Leana Van Der Vliet [Canada] ; Heather Lemieux [Canada] ; Rick Scroggins [Canada] ; Steven D. Siciliano [Canada]Source :
- Environmental Toxicology and Chemistry [ 0730-7268 ] ; 2012-04.
English descriptors
Abstract
The ability to assess the toxic potential of soil contamination within boreal regions is currently limited to test species representative of arable lands. This study evaluated the use of six boreal plant species (Pinus banksiana, Picea glauca, Picea mariana, Populus tremuloides, Calamagrostis Canadensis, and Solidago canadensis) and four invertebrate species (Dendrodrilus rubidus, Folsomia nivalis, Proisotoma minuta, and Oppia nitens) and compared their performance to a suite of standard agronomic soil test species using site soils impacted by petroleum hydrocarbon (PHC) and salt contamination. To maintain horizon‐specific differences, individual soil horizons were collected from impacted sites and relayered within the test vessels. Use of the boreal species was directly applicable to the assessment of the contaminated forest soils and, in the case of the hydrocarbon‐impacted soil, demonstrated greater overall sensitivity (25th percentile of estimated species sensitivity distribution [ESSD25] = 5.6% contamination: 10,600 mg/kg fraction 3 [F3; equivalent hydrocarbon range of >C16 to C34] Of/Oh horizon, and 270 mg/kg F3 Ahg horizon) relative to the standard test species (ESSD25 = 23% contamination: 44,000 mg/kg F3 Of/Oh horizon, and 1,100 mg/kg F3 Ahg horizon). For salinity, there was no difference between boreal and standard species with a combined ESSD25 = 2.3%, equating to 0.24 and 0.25 dS/m for the Ah and Ck horizons. The unequal distribution of soil invertebrates within the layered test vessels can confound test results and the interpretation of the toxic potential of a site. The use of test species relevant to boreal eco‐zones strengthens the applicability of the data in support of realistic ecological risk assessments applicable to the boreal regions. Environ. Toxicol. Chem. 2012;31:766–777. © 2012 SETAC
Url:
DOI: 10.1002/etc.1744
Affiliations:
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This study evaluated the use of six boreal plant species (Pinus banksiana, Picea glauca, Picea mariana, Populus tremuloides, Calamagrostis Canadensis, and Solidago canadensis) and four invertebrate species (Dendrodrilus rubidus, Folsomia nivalis, Proisotoma minuta, and Oppia nitens) and compared their performance to a suite of standard agronomic soil test species using site soils impacted by petroleum hydrocarbon (PHC) and salt contamination. To maintain horizon‐specific differences, individual soil horizons were collected from impacted sites and relayered within the test vessels. Use of the boreal species was directly applicable to the assessment of the contaminated forest soils and, in the case of the hydrocarbon‐impacted soil, demonstrated greater overall sensitivity (25th percentile of estimated species sensitivity distribution [ESSD25] = 5.6% contamination: 10,600 mg/kg fraction 3 [F3; equivalent hydrocarbon range of >C16 to C34] Of/Oh horizon, and 270 mg/kg F3 Ahg horizon) relative to the standard test species (ESSD25 = 23% contamination: 44,000 mg/kg F3 Of/Oh horizon, and 1,100 mg/kg F3 Ahg horizon). For salinity, there was no difference between boreal and standard species with a combined ESSD25 = 2.3%, equating to 0.24 and 0.25 dS/m for the Ah and Ck horizons. The unequal distribution of soil invertebrates within the layered test vessels can confound test results and the interpretation of the toxic potential of a site. The use of test species relevant to boreal eco‐zones strengthens the applicability of the data in support of realistic ecological risk assessments applicable to the boreal regions. Environ. Toxicol. Chem. 2012;31:766–777. © 2012 SETAC</div></front></TEI><affiliations><list><country><li>Canada</li></country></list><tree><country name="Canada"><noRegion><name sortKey="Princz, Juliska I" sort="Princz, Juliska I" uniqKey="Princz J" first="Juliska I." last="Princz">Juliska I. Princz</name></noRegion><name sortKey="Fraser, Christopher" sort="Fraser, Christopher" uniqKey="Fraser C" first="Christopher" last="Fraser">Christopher Fraser</name><name sortKey="Lemieux, Heather" sort="Lemieux, Heather" uniqKey="Lemieux H" first="Heather" last="Lemieux">Heather Lemieux</name><name sortKey="Moody, Mary" sort="Moody, Mary" uniqKey="Moody M" first="Mary" last="Moody">Mary Moody</name><name sortKey="Princz, Juliska I" sort="Princz, Juliska I" uniqKey="Princz J" first="Juliska I." last="Princz">Juliska I. Princz</name><name sortKey="Princz, Juliska I" sort="Princz, Juliska I" uniqKey="Princz J" first="Juliska I." last="Princz">Juliska I. Princz</name><name sortKey="Scroggins, Rick" sort="Scroggins, Rick" uniqKey="Scroggins R" first="Rick" last="Scroggins">Rick Scroggins</name><name sortKey="Siciliano, Steven D" sort="Siciliano, Steven D" uniqKey="Siciliano S" first="Steven D." last="Siciliano">Steven D. Siciliano</name><name sortKey="Siciliano, Steven D" sort="Siciliano, Steven D" uniqKey="Siciliano S" first="Steven D." last="Siciliano">Steven D. Siciliano</name><name sortKey="Van Der Vliet, Leana" sort="Van Der Vliet, Leana" uniqKey="Van Der Vliet L" first="Leana" last="Van Der Vliet">Leana Van Der Vliet</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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