1999
DOI: 10.1002/etc.5620181230
|View full text |Cite
|
Sign up to set email alerts
|

Effects of a pulsed treatment with the herbicide afalon (active ingredient linuron) on macrophyte‐dominated mesocosms. II. Structural responses

Abstract: Abstract-Outdoor mesocosms (experimental drainage ditches) were treated repeatedly with linuron at nominal concentrations of 0, 0.5, 5, 15, and 50 g/L. After each of three treatments (with 4-week intervals), the systems were kept static for 1 week. Subsequently, they were flushed with nonpolluted surface water with a residence time of 5 d until the next treatment. Species composition and abundance of macrophytes, periphyton, phytoplankton, zooplankton, and macroinvertebrates were examined at prefixed time inte… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
1
1
1

Citation Types

0
2
1

Year Published

1999
1999
2017
2017

Publication Types

Select...
7
1

Relationship

1
7

Authors

Journals

citations
Cited by 21 publications
(3 citation statements)
references
References 16 publications
0
2
1
Order By: Relevance
“…The overall NOEC for linuron in this study was lower than the NOEC found by Van Geest et al (1999;Table 4), who also evaluated a single application. However, it matched the NOEC as noted in a microcosm study with chronic exposure of linuron (Table 2), which may have been a result of the persistence of linuron in the present study (Table 1).…”
Section: Comparison Of Safety Thresholds With Other Microcosm Studiescontrasting
confidence: 81%
“…The overall NOEC for linuron in this study was lower than the NOEC found by Van Geest et al (1999;Table 4), who also evaluated a single application. However, it matched the NOEC as noted in a microcosm study with chronic exposure of linuron (Table 2), which may have been a result of the persistence of linuron in the present study (Table 1).…”
Section: Comparison Of Safety Thresholds With Other Microcosm Studiescontrasting
confidence: 81%
“…Similarly, linuron was applied to mesocosm systems to determine if altered ecosystem processes could lead to long-term impacts on the invertebrate community. Three pulsed exposures of 10 µg/L linuron (one per month for 3 months) had an adverse effect on periphyton abundance and phytoplankton taxa richness, and briefly reduced the abundance of Keratella quadrata (Ploima: Brachionidae) rotifers and slightly reduced macroinvertebrate taxa richness (Van Geest, et al 1999). It was not determined if the impacts on aquatic invertebrates were secondary effects of change to primary producer communities or if linuron had some direct toxicological effect on invertebrates.…”
Section: Final Report Cft/efsa/ppr/2008/01 25mentioning
confidence: 99%
“…Van den Brink et al (1997) and Van Geest et al (1999) estimated an effective concentration value which inhibits 50% (EC 50 ) of the tested organism for linuron equal to 2.5 μg L −1 (macrophyte Elodea nuttallii) and 6 μg L −1 (green alga Scenedesmus acutus), respectively, while, in a recent study, Daam and Van den Brink (2007) estimated for linuron a low observed effective concentration of 5 μg L −1 for small indoor microcosms. Furthermore, Gatidou and Stasinakis (2010) estimated an EC 50 of linuron for the duckweed Lemna minor equal to 30 μg L −1 .…”
Section: Introductionmentioning
confidence: 96%