title: Combining polar organic chemical integrative samplers (POCIS) with toxicity testing to evaluate pesticide mixture effects on natural phototrophic biofilms.
abstract: Polar organic chemical integrative samplers (POCIS) are valuable tools in passive sampling methods for monitoring polar organic pesticides in freshwaters. Pesticides extracted from the environment using such methods can be used to toxicity tests. This study evaluated the acute effects of POCIS extracts on natural phototrophic biofilm communities. Our results demonstrate an effect of POCIS pesticide mixtures on chlorophyll a fluorescence, photosynthetic efficiency and community structure. Nevertheless, the range of biofilm responses differs according to origin of the biofilms tested, revealing spatial variations in the sensitivity of natural communities in the studied stream. Combining passive sampler extracts with community-level toxicity tests offers promising perspectives for ecological risk assessment.
authors.affiliation: Cemagref, UR MALY, 3 bis quai Chauveau - CP 220, F-69336 Lyon, France. stephane.pesce@cemagref.fr
authors.forename: Stéphane
authors.initials: S
authors.lastname: Pesce
authors.forename: Soizic
authors.initials: S
authors.lastname: Morin
authors.forename: Sophie
authors.initials: S
authors.lastname: Lissalde
authors.forename: Bernard
authors.initials: B
authors.lastname: Montuelle
authors.forename: Nicolas
authors.initials: N
authors.lastname: Mazzella
mesh_terms: D018407:Bacterial Physiological Phenomena / Q000187:drug effects*; D018441:Biofilms / Q000187:drug effects*; D058448:Biota; D002734:Chlorophyll / Q000633:toxicity; D000077194:Chlorophyll A; D004784:Environmental Monitoring / Q000295:instrumentation / Q000379:methods*; D005602:France; D009930:Organic Chemicals / Q000737:chemistry / Q000633:toxicity; D010575:Pesticides / Q000032:analysis / Q000737:chemistry / Q000633:toxicity*; D010788:Photosynthesis / Q000187:drug effects; D045483:Rivers / Q000737:chemistry / Q000382:microbiology; D018675:Toxicity Tests / Q000379:methods; D014874:Water Pollutants, Chemical / Q000032:analysis / Q000737:chemistry / Q000633:toxicity*
chemical_list: D009930:Organic Chemicals; D010575:Pesticides; D014874:Water Pollutants, Chemical; D002734:Chlorophyll; D000077194:Chlorophyll A