Ecological effects of the herbicide linuron in tropical freshwater microcosms

Ecotoxicology and Environmental Safety
M A DaamAntónio J A Nogueira

Abstract

Effects of a single application of the photosynthesis-inhibiting herbicide linuron (0, 15, 50, 150, and 500 microg/L) on the ecology of outdoor plankton-dominated microcosms were studied in Thailand. As a result of the decreased photosynthesis, DO and pH decreased while EC, alkalinity and nutrient concentrations increased. Chlorophytes belonging to the genera Scenedesmus, Coelastrum and Pediastrum were the most sensitive taxa, whereas several other chlorophytes, diatoms, and cryptophytes increased in abundance. Tolerant taxa appeared to be less digestable for several zooplankton taxa, which subsequently decreased in abundances. Chamaesiphon sp. (Cyanobacteria) was the most susceptible periphyton species. As a consequence of functional redundancy, effects of the herbicide on the chlorophyll-a content of periphyton and especially phytoplankton did not always reflect the effects noted on community level.

Citations

Feb 23, 2011·Archives of Environmental Contamination and Toxicology·C LeboulangerG Sarazin
Dec 3, 2014·Ecotoxicology and Environmental Safety·Candida ShinnGaël Grenouillet
Feb 19, 2013·The Science of the Total Environment·K P J ViaeneC R Janssen
Oct 20, 2012·Environmental Pollution·Catherine B ChoungGrant C Hose
Jan 22, 2011·Environmental Pollution·Michiel A Daam, Paul J Van den Brink
May 17, 2017·Bulletin of Environmental Contamination and Toxicology·Pengfei XiaoGuonian Zhu
Mar 12, 2020·International Journal of Radiation Biology·Seyed Ali Hosseini TafreshiAhmad Ramazani-Moghaddam-Arani
Feb 6, 2020·Ecotoxicology and Environmental Safety·Zainab Naser HusseiniMohammad Amin Toghyani

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