AN "ENVIRO-INFORMATIC" ASSESSMENT OF SAGINAW BAY (LAKE HURON, USA) PHYTOPLANKTON : DATA-DRIVEN CHARACTERIZATION AND MODELING OF MICROCYSTIS (CYANOPHYTA)(1)

© 2011 Phycological Society of America.

Détails bibliographiques
Publié dans:Journal of phycology. - 1966. - 47(2011), 4 vom: 29. Aug., Seite 714-30
Auteur principal: Millie, David F (Auteur)
Autres auteurs: Fahnenstiel, Gary L, Weckman, Gary R, Klarer, David M, Dyble, Julianne, Vanderploeg, Henry A, Fishman, Daniel B
Format: Article en ligne
Langue:English
Publié: 2011
Accès à la collection:Journal of phycology
Sujets:Journal Article Laurentian Great Lakes harmful algal blooms nonparametric statistics phosphorus toxic cyanobacteria
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520 |a Phytoplankton and Microcystis aeruginosa (Kütz.) Kütz. biovolumes were characterized and modeled, respectively, with regard to hydrological and meteorological variables during zebra mussel invasion in Saginaw Bay (1990-1996). Total phytoplankton and Microcystis biomass within the inner bay were one and one-half and six times greater, respectively, than those of the outer bay. Following mussel invasion, mean total biomass in the inner bay decreased 84% but then returned to its approximate initial value. Microcystis was not present in the bay during 1990 and 1991 and thereafter occurred at/in 52% of sample sites/dates with the greatest biomass occurring in 1994-1996 and within months having water temperatures >19°C. With an overall relative biomass of 0.03 ± 0.01 (mean + SE), Microcystis had, at best, a marginal impact upon holistic compositional dynamics. Dynamics of the centric diatom Cyclotella ocellata Pant. and large pennate diatoms dominated compositional dissimilarities both inter- and intra-annually. The environmental variables that corresponded with phytoplankton distributions were similar for the inner and outer bays, and together identified physical forcing and biotic utilization of nutrients as determinants of system-level biomass patterns. Nonparametric models explained 70%-85% of the variability in Microcystis biovolumes and identified maximal biomass to occur at total phosphorus (TP) concentrations ranging from 40 to 45 μg · L(-1) . From isometric projections depicting modeled Microcystis/environmental interactions, a TP concentration of <30 μg · L(-1) was identified as a desirable contemporary "target" for management efforts to ameliorate bloom potentials throughout mussel-impacted bay waters 
650 4 |a Journal Article 
650 4 |a Laurentian Great Lakes 
650 4 |a harmful algal blooms 
650 4 |a nonparametric statistics 
650 4 |a phosphorus 
650 4 |a toxic cyanobacteria 
700 1 |a Fahnenstiel, Gary L  |e verfasserin  |4 aut 
700 1 |a Weckman, Gary R  |e verfasserin  |4 aut 
700 1 |a Klarer, David M  |e verfasserin  |4 aut 
700 1 |a Dyble, Julianne  |e verfasserin  |4 aut 
700 1 |a Vanderploeg, Henry A  |e verfasserin  |4 aut 
700 1 |a Fishman, Daniel B  |e verfasserin  |4 aut 
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