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De: Environmental Pollution Date: vie, 15 oct 2021 a las 8:33Subject: Decision on submission to Environmental PollutionTo: Carmen Sabio y García Manuscript Number: ENVPOL-D-21-04728R2  Rethinking the term ?glyphosate effect? through the evaluation of different glyphosate-based herbicide effects over aquatic microbial communities  Dear Dr Sabio y García,I am pleased to inform you that your manuscript has been accepted for publication.   Thank you for all of the hard work that went into this paper.     Your accepted manuscript will now be transferred to our production department. We will create a proof which you will be asked to check, and you will also be asked to complete a number of online forms required for publication. If we need additional information from you during the production process, we will contact you directly.We appreciate you submitting your manuscript to Environmental Pollution and hope you will consider us again for future submissions.Kind regards,     Sarah Michele Harmon   EditorEnvironmental Pollution  ABSTRACTGlyphosate-based herbicides (GBH) -the most widely used herbicides in agriculture worldwide- are frequently generalized by the name of ?glyphosate?. However, GBH encompass a variety of glyphosate salts as active ingredient and different adjuvants, which differ between products. These herbicides reach water bodies and produce diverse impacts over aquatic communities. Yet, the risk assessment assays required for the approval focus mostly on active ingredients. Herein, we compared the effect of five different GBH as well as of monoisoprolylamine salt of glyphosate (GIPA) on aquatic microbial communities from natural shallow lakes that were mixed and allowed to evolve in an outdoor pond. We performed an 8-day long assay under indoor control conditions to evaluate the effects of exposure on the structure of nano- plus microphytoplankton (net phytoplankton) and picoplankton communities through microscopy and flow cytometry, respectively. Significantly different effects were evident on the structure of microbial communities dependent on the GBH, even with herbicides sharing similar active ingredients. Each GBH evoked increases of different magnitude in bacterioplankton abundance. Furthermore, GIPA and a formulation decreased the abundance of a phycocyanin-rich (PC-rich) picocyanobacteria (Pcy) cytometric population and GIPA further altered Pcy composition. Also, two GBH increased net phytoplankton total abundance and, unlike the tested GBH, no apparent effect of GIPA was detected on this community structure. These results demonstrate that GBH effects on aquatic microbial communities should not be summarized as ?glyphosate? effects considering that the formulations have effects beyond those exerted by the active ingredients alone. This work intends to alert on the lack of real knowledge regarding the consequences of the variety of GBH on natural aquatic ecosystems. Indeed, the wide use of the term ?glyphosate effect? should be thoroughly rethought.

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