2000
DOI: 10.1002/etc.5620190105
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Modifications to the algal growth inhibition test for use as a regulatory assay

Abstract: Abstract-Biological assays using aquatic invertebrates and fish do not necessarily predict protection levels for primary producers such as algae and aquatic macrophytes. State regulatory programs may not be protecting the environment from many phytotoxic compounds. Recent modifications of the U.S. Environmental Protection Agency's algal test were evaluated for their potential use as a regulatory assay. Primary goals of this investigation were to downsize the algal assay and to evaluate various methods of autom… Show more

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Cited by 114 publications
(52 citation statements)
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“…According to these values, Cu, Zn and Cd were the most toxic metals (EC50 = 90, 100 and 120μg.L -1 , respectively), whereas Ni, Cr and Pb were less toxic (EC50 = 150, 210 and 350 μg.L -1 , respectively). These concentrations were similar than those proposed by Blaise et al (1998), Geis et al (2000) and Guéguen et al (2004) for P. subcapitata.…”
Section: Bioassayssupporting
confidence: 91%
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“…According to these values, Cu, Zn and Cd were the most toxic metals (EC50 = 90, 100 and 120μg.L -1 , respectively), whereas Ni, Cr and Pb were less toxic (EC50 = 150, 210 and 350 μg.L -1 , respectively). These concentrations were similar than those proposed by Blaise et al (1998), Geis et al (2000) and Guéguen et al (2004) for P. subcapitata.…”
Section: Bioassayssupporting
confidence: 91%
“…On the contrary, two samples were also toxic to the algae in spite of no detectable concentrations of dissolved Zn. On the other hand, 13 samples were no toxic to the algae, but expected %Iw values (between 10.03% and 90.51%) by high levels of Reference values with P. subcapitata by (a) Guéguen et al (2004); (b) Blaise et al (1998) and (c) Geis et al (2000).…”
Section: Bioassaysmentioning
confidence: 90%
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“…Since they are the basic link in aquatic food chains and are a key functional group of organisms, they are of fundamental importance in proper structure and function of the whole ecosystem (Burkiewicz et al 2005). Disruptions in the production level would probably cause effects at higher trophic levels (Geis et al 2000).…”
Section: Introductionmentioning
confidence: 99%
“…FluoroProbe chl a measurements were validated against chl a data of samples extracted according to standard methods (APHA, 1998) (linear regression analysis: R 2 = 0.94, N = 32, p < 0.05). In our study, chl a fluorescence as measured by FluoroProbe was used as a proxy for cyanobacterial biomass (Geis et al, 2000;Eisentraeger et al, 2003).…”
Section: Nutrients and Phytoplankton Biomassmentioning
confidence: 99%