Interspecies competition between microcystis aeruginosa and Scenedesmus obliquus under phenanthrene stress

• Autorzy: Jin X. , Jiang J. , Sheng L. , Jin M.
• Języki publikacji: EN

Abstrakty

EN

Interspecies competition is considered an important effector of community structure in ecosystems. Interspecies interactions may change due to changing environmental factors, including exogenous organic pollutants. In this paper, we measured the change in population density, based on the logistical growth model, of Microcystis aeruginosa and Scenedesmus obliquus when they were cultivated in single-species and mixedspecies cultures, under the stress of the polycyclic aromatic hydrocarbon (PAH) phenanthrene. The singlespecies culture experiment showed that S. obliquus could tolerate greater phenanthrene stress than could M. aeruginosa, and exhibited hormesis when the concentration of phenanthrene was 0.0625 mg/l. In the mixedspecies culture experiment, the toxicity of phenanthrene on the two algae changed. In the 0.0625 mg/l and 0.25 mg/l treatments, the population density of S. obliquus increased, whereas the population density of M. aeruginosa in each group decreased. Finally, the influence of different phenanthrene concentrations on the interspecies competition was evaluated.

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2014
• Tom: 23
• Numer: 5
• Opis fizyczny: p.1609-1916,fig.,ref.

Twórcy

autor

Jin X.

• State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, College of Urban and Environmental Sciences, Northeast Normal University, Changchun 130024, P.R. China

autor

Jiang J.

• Department of Science Research, Liaoning University, Shenyang 110036, P.R. China

autor

Sheng L.

• State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, College of Urban and Environmental Sciences, Northeast Normal University, Changchun 130024, P.R. China

autor

Jin M.

• Department of Mathematics, Heilongjiang Institute of Technology, Harbin 150050, P.R. China

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