Modeling Remobilization of Neonicotinoid Residues from Tree Foliage in Streams-A Relevant Exposure Pathway in Risk Assessment?

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Fältnamn	Indikatorer	Metadata
000		02970naa a2200301 4500
001		oai:slubar.slu.se:86675
003		SwePub
008		240410s2017 \| \|\|\|\|\|\|\|\|\|\|\|000 \|\|eng\|
024	7	a https://res.slu.se/id/publ/866752 URI
024	7	a https://doi.org/10.1021/acs.est.6b052132 DOI
040		a (SwePub)slu
041		a engb eng
042		9 SwePub
072	7	a ref2 swepub-contenttype
072	7	a art2 swepub-publicationtype
100	1	a Bundschuh, Mircou Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för vatten och miljö,Department of Aquatic Sciences and Assessment4 aut0 (Swepub:slu)93534
245	1 0	a Modeling Remobilization of Neonicotinoid Residues from Tree Foliage in Streams-A Relevant Exposure Pathway in Risk Assessment?
264		c 2017-01-10
264	1	b American Chemical Society (ACS),c 2017
264	1	b American Chemical Society,c 2024
520		a Systemic neonicotinoid insecticides are increasingly used as a crop protection measure to suppress insect pests on trees. However, senescent foliage falling from treated trees represents a rarely studied pathway through which neonicotinoids may enter nontarget environments, e.g., surface waters. To estimate risk posed by this pathway, neonicotinoid residues were analyzed in foliage from black alder trees treated with one of three neonicotinoid insecticides (imidacloprid, thiacloprid, or acetamiprid) at five concentrations, each ranging from 0.0375-9.6 g active ingredient/cm trunk diameter at breast height (n = 3). Foliar residues measured at the time of leaf fall were used as input parameters for a model predicting imidacloprid water concentrations over a 100-m-long stream stretch as a consequence of remobilization from introduced foliage (input: 600 g foliage/m(2) containing 80 mu g imidacloprid/g). The water concentration (up to,similar to 250 mu g/L) predicted by the model exceeded the recently proposed Maximum Permissible Concentration of 8.3 mu g/L for 15.5 days. Moreover, dietary uptake was identified as an additional exposure route for aquatic organisms. The alternative pathway (i.e., introduction via leaf fall) and exposure route (i.e., dietary uptake) associated with the systemic nature of neonicotinoids should be accounted for during their registration process in order to safeguard ecosystem integrity.
650	7	a NATURVETENSKAPx Annan naturvetenskapx Övrig annan naturvetenskap0 (SwePub)107992 hsv//swe
650	7	a NATURAL SCIENCESx Other Natural Sciencesx Other Natural Sciences not elsewhere specified0 (SwePub)107992 hsv//eng
710	2	a Sveriges lantbruksuniversitetb Institutionen för vatten och miljö4 org
710	2	a Sveriges lantbruksuniversitet
773	0	t Environmental Science and Technologyd : American Chemical Society (ACS)g 51, s. 1785-1794q 51<1785-1794x 0013-936Xx 1520-5851
856	4 8	u https://res.slu.se/id/publ/86675
856	4 8	u https://doi.org/10.1021/acs.est.6b05213

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