Effects of the glyphosate-based herbicide Roundup WeatherMax® on metamorphosis of wood frogs (Lithobates sylvaticus) in natural wetlands

The response of amphibian larvae to exposure to a glyphosate-based herbicide (Roundup WeatherMax) and nutrient enrichment in an ecosystem experiment

“…All of which found adverse effects on survival in the range of the high initial exposure concentrations used in this study. However, our results are consistent with the findings of other previously published field studies which demonstrated no significant deleterious effects of exposure to glyphosate-based herbicides on the survival of larval amphibians (Edge et al, 2012;Lanctôt et al, 2013;Thompson et al, 2004;Wojtaszek et al, 2004).…”

“…However, negative effects have not been observed in the limited number of field experiments examining impacts of on either larval (Edge et al, 2012;Lanctôt et al, 2013;Thompson et al, 2004;Wojtaszek et al, 2004) or terrestrial life stages (Edge et al, 2011. This inconsistency indicates that our current understanding of the potential effects of these herbicides in natural systems is poor and in need of further investigation.…”

Short-term transport of glyphosate with erosion in Chinese loess soil — A flume experiment

“…The repetitive use of glyphosate-based herbicides in the field, however, increases the possibility of glyphosate occurrence in, and threat to, soil, plants, surface/ground water (Borggaard and Gimsing, 2008), and animals (Lanctot et al, 2013;Muangphra et al, 2014;Yadav et al, 2013;Zaller et al, 2014). Meanwhile, the risk is particularly high when applied pesticide on bare soil directly before and after sowing.…”

Decay characteristics and erosion-related transport of glyphosate in Chinese loess soil under field conditions

“…Erosive rainfall occurs frequently in regions with loess soil in China (Shi and Shao, 2000), and many nutrients and pesticides are transported, leading to serious water pollution (Li et al, 2011;Ongley et al, 2010). Glyphosate in soil either can be dispersed in runoff and drainage or carried with soil particles (Avigliano et al, 2014;Bergstrom et al, 2011;Kjaer et al, 2005;Lanctot et al, 2013;Londo et al, 2014;Styczen et al, 2011;Webster et al, 2014). Many studies have documented the transport of glyphosate by runoff and leached discharge, but most have focused on laboratory and lysimetric methods using pots or soil columns (Bergstrom et al, 2011;Zhao et al, 2009;Zhou et al, 2010).…”

“…The dynamics of soil moisture caused by heavy rains would likely indirectly affect glyphosate decay and transport with preferential flow (Coupe et al, 2012;Degenhardt et al, 2012;Todorovic et al, 2014), which would increase the risk to nearby water bodies, soils, and aquatic life (Avigliano et al, 2014;Lanctot et al, 2013;Londo et al, 2014;Webster et al, 2014). Erosive rainfall occurs frequently in regions with loess soil in China (Shi and Shao, 2000), and many nutrients and pesticides are transported, leading to serious water pollution (Li et al, 2011;Ongley et al, 2010).…”