Next Article in Journal
Previous Article in Journal
Int. J. Environ. Res. Public Health 2005, 2(2), 328-334; doi:10.3390/ijerph2005020019
Article

Assessing Interactions of Multiple Agrichemicals by Using Bacterial Assemblages in a Wetland Mesocosm System

1,* , 1, 2 and 3
Received: 10 January 2005; Accepted: 10 April 2005 / Published: 14 August 2005
View Full-Text   |   Download PDF [98 KB, uploaded 19 June 2014]
Abstract: Agrichemicals may enter wetlands located adjacent to or downstream from agricultural fields. We investigated the individual and interactive effects of three agrichemicals [atrazine, chlorpyrifos, and monosodium acid methanearsonate (MSMA)] and methyl mercury on abundance and heterotrophic potential of wetland heterotrophic bacteria assemblages. We used a factorial experimental design, in which chemicals were introduced in all possible combinations to 66 500-liter mesocosms at the Biological Field Station of the University of Mississippi. Methyl mercury was added to bring the total mercury (HG) concentration to 0.4 mg/Kg wet weight at the sediment surface. Atrazine, chlorpyrifos, and MSMA were added at concentrations of 192, 51, and 219μg/L, respectively. Over 32 days of exposure, microbial heterotrophic activity was sensitive to only the interactive effect of HG*ATR*CPF in the sediments and only CPF in the water. Total bacterial numbers did not exhibit any significant treatment effects. Therefore, the effects of agrichemicals were reflected on cell-specific bacterial heterotrophic activity rather than bacterial population size.
Keywords: Agrichemicals; bacterial assemblages; wetland; mesocosm Agrichemicals; bacterial assemblages; wetland; mesocosm
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Export to BibTeX |
EndNote


MDPI and ACS Style

Hwang, H.-M.; McArthur, N.; Ochs, C.; Libman, B. Assessing Interactions of Multiple Agrichemicals by Using Bacterial Assemblages in a Wetland Mesocosm System. Int. J. Environ. Res. Public Health 2005, 2, 328-334.

AMA Style

Hwang H-M, McArthur N, Ochs C, Libman B. Assessing Interactions of Multiple Agrichemicals by Using Bacterial Assemblages in a Wetland Mesocosm System. International Journal of Environmental Research and Public Health. 2005; 2(2):328-334.

Chicago/Turabian Style

Hwang, Huey-Min; McArthur, Neisee; Ochs, Clifford; Libman, Bruce. 2005. "Assessing Interactions of Multiple Agrichemicals by Using Bacterial Assemblages in a Wetland Mesocosm System." Int. J. Environ. Res. Public Health 2, no. 2: 328-334.



Int. J. Environ. Res. Public Health EISSN 1660-4601 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert