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Effects of a glyphosate-based herbicide on Fucus virsoides (Fucales, Ochrophyta) photosynthetic efficiency

Author:
Falace, Annalisa, Tamburello, Laura, Guarnieri, Giuseppe, Kaleb, Sara, Papa, Loredana, Fraschetti, Simonetta
Source:
Environmental pollution 2018 v.243 pp. 912-918
ISSN:
0269-7491
Subject:
Fucus, coasts, experimental design, fronds, glyphosate, nutrients, photosynthesis, runoff
Abstract:
Herbicides are increasingly recognised as sources of water pollution. Glyphosate-based herbicides (GBHs) are widely used because of their low cost and high effectiveness. By measuring the photosynthetic efficiency of Fucus virsoides fronds exposed to a GBH (Roundup® Power 2.0), we investigated the effect of a continuous exposure (6 days) and the potential of recovery after a short exposure (24 h). Both experiments were carried out combining GBH with and without nutrient enrichment, simulating a runoff event. A factorial experimental design allowed us to assess the potential of interactions between GBH and nutrients, which are likely to co-occur in coastal areas. Our results show deleterious effects of GBH at low concentration on F. virsoides, independently from the duration of exposure and the presence of nutrients.
Agid:
6160570