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Influence of zinc on periphyton Communities: laboratory interaction of Zinc and phosphate in River Garasou

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Year: 2010
Present: شفاهي
COI code: INCWR01_063
Paper Language: English

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Authors Influence of zinc on periphyton Communities: laboratory interaction of Zinc and phosphate in River Garasou

  Mozafar Sharifi - Razi University Center for Environmental Studies, Faculty of Science, Kermanshah
  Fatemeh Essmaieli - Razi University Center for Environmental Studies, Kermanshah

Abstract:

Several studies based on laboratory experiments and field observations have reported high sensitivity of periphyton algae to selected environmental variables. However, very few studies have aimed to investigate complex interactions between these variables. The present study evaluate the long-term (24 day) influence of Zinc and Zinc combined with phosphate on productivity of algal periphyton communities. Periphyton communities developed from a relatively unpolluted water were exposed in indoor artificial streams with zinc concentration ( 1.2 mg.l-1) and 2 mg P.L-1 found at a polluted stream. The effects of zinc on community productivity were assessed by measuring biomass, ash-free dry mass (AFDM), chlorophyll-a. Results obtained from present study indicate that Zn alone cause a severe decrease in growth of the periphyton algae, but phosphate totally compensated for this Zn effect. Results indicated that an increase in P exposure causes, an increase of dry mass, AFDM and chlorophyll a. Furthermore the uptake of Zn will increase in Zn+P treatment, leading to higher concentration in the periphyton algae. This study implies that in systems rich in phosphorus, zinc exposure might not be a problem, but in systems with low phosphorus concentrations, net primary production might be affected.

Keywords:

Zinc, periphyton ,phosphate,River Garasou,Kermanshah

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COI code: INCWR01_063

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Sharifi, Mozafar & Fatemeh Essmaieli, 2010, Influence of zinc on periphyton Communities: laboratory interaction of Zinc and phosphate in River Garasou, 01st Iranian National Conference on Applied Research in Ware Resources, كرمانشاه, دانشگاه صنعتي كرمانشاه, https://www.civilica.com/Paper-INCWR01-INCWR01_063.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Sharifi, Mozafar & Fatemeh Essmaieli, 2010)
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Type: state university
Paper No.: 7870
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