Effects of glyphosate and two herbicide mixtures on microbial communities in prairie wetland ecosystems: a mesocosm approach

Journal of Environmental Quality
Srinivas SuraNancy E Glozier

Abstract

A multitrophic outdoor mesocosm system was used to mimic a wetland ecosystem and to investigate the effects of glyphosate and two herbicide mixtures on wetland microbial communities. The glyphosate concentration used was 1000 times the environmentally relevant concentration (ERC). One herbicide mixture consisted of six auxin-type herbicides (2,4-D, MCPA, clopyralid, dicamba, dichlorprop, mecoprop), each at 1000 times the ERC. The second mixture was comprised of eight herbicides, including the six auxin-type herbicides as well as bromoxynil and glyphosate. For this mixture, a dose-response approach was used to treat mesocosms with the ERCs of each herbicide as the base concentration. Algal biomass and production and bacterial production and numbers for pelagic and attached communities were measured at different times over a 22-d period. The experimental results indicate that the eight-herbicide mixture, even at low concentrations, produced negative effects on microbial communities. Glyphosate on its own suppressed algal biomass and production for the duration of the study in pelagic and biofilm communities. Algal biomass and production, although initially depressed in the auxin-type herbicide treatment, were stimulated from Day ...Continue Reading

References

Apr 1, 1990·Applied and Environmental Microbiology·D Schowanek, W Verstraete
May 1, 1988·Bulletin of Environmental Contamination and Toxicology·R GroverS U Khan
Feb 1, 1982·The Science of the Total Environment·A R Stebbing
May 1, 1996·Plant Physiology·S Abel, A Theologis
Nov 1, 1996·Archives of Environmental Contamination and Toxicology·M E Kobraei, D S White
May 21, 1999·Science·J W CostertonE P Greenberg
Sep 3, 1999·The Science of the Total Environment·D B DonaldG Weiss
Dec 20, 2000·Trends in Plant Science·K Grossmann
Sep 8, 2001·Canadian Journal of Microbiology·J R LawrenceT R Neu
Jul 1, 1997·The Plant Cell·H. Kende, JAD. Zeevaart
Dec 5, 2003·The Science of the Total Environment·Ursula DorigoChristophe Leboulanger
Jan 10, 2004·Environmental Toxicology and Chemistry·Joseph M CulpRobert B Brua
Feb 18, 2004·Journal of Environmental Quality·Allan J Cessna, Jane A Elliott
Feb 3, 2005·Environmental Toxicology and Chemistry·David B DonaldJim Syrgiannis
Feb 15, 2005·Environmental Science & Technology·B C Barja, M Dos Santos Afonso
Feb 1, 1986·Applied and Environmental Microbiology·T M Balthazor, L E Hallas
Jun 1, 1987·Applied and Environmental Microbiology·S Lee, J A Fuhrman
Jan 10, 2006·The Science of the Total Environment·Dana W KolpinSusan T Glassmeyer
Aug 10, 2007·Environmental Health Perspectives·David B DonaldNancy E Glozier
Aug 4, 2009·Ecotoxicology and Environmental Safety·Stéphane PesceJacques Bohatier
Apr 15, 2010·Archives of Environmental Contamination and Toxicology·Ursula DorigoBernard Montuelle

❮ Previous
Next ❯

Citations

Nov 20, 2013·Marine Environmental Research·Jonny BeyerKnut Erik Tollefsen
Aug 1, 2012·The Science of the Total Environment·Srinivas SuraAnnemieke Farenhorst
Feb 28, 2017·Journal of Agricultural and Food Chemistry·Hui LiuZhiqiang Zhou
Jan 9, 2016·Environmental Science. Processes & Impacts·M Ekrem KarpuzcuWilliam A Arnold
Jan 18, 2018·Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment·Kaiying ChenYongquan Zheng
Feb 14, 2017·Nano Convergence·Inhong KimJin-Woo Oh
Dec 5, 2018·Journal of Environmental Quality·David B DonaldAnnemieke Farenhorst
Nov 3, 2012·Environmental Science & Technology·Teng Zeng, William A Arnold

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofilm & Infectious Disease

Biofilm formation is a key virulence factor for a wide range of microorganisms that cause chronic infections.Here is the latest research on biofilm and infectious diseases.