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Indicator bacteria community in seawater and coastal sediment: the Persian Gulf as a case

BACKGROUND: The aim of present work was to assess the concentration levels as well as vertical distribution of indicator bacteria including total coliform, fecal coliform, Pseudomonas aeruginosa, and Heterotrophic Plate Count (HPC) in the marine environment (seawater and coastal sediments) and evalu...

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Autores principales: Karbasdehi, Vahid Noroozi, Dobaradaran, Sina, Nabipour, Iraj, Ostovar, Afshin, Arfaeinia, Hossein, Vazirizadeh, Amir, Mirahmadi, Roghayeh, Keshtkar, Mozhgan, Ghasemi, Fatemeh Faraji, Khalifei, Farzaneh
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5345169/
https://www.ncbi.nlm.nih.gov/pubmed/28293427
http://dx.doi.org/10.1186/s40201-017-0266-2
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author Karbasdehi, Vahid Noroozi
Dobaradaran, Sina
Nabipour, Iraj
Ostovar, Afshin
Arfaeinia, Hossein
Vazirizadeh, Amir
Mirahmadi, Roghayeh
Keshtkar, Mozhgan
Ghasemi, Fatemeh Faraji
Khalifei, Farzaneh
author_facet Karbasdehi, Vahid Noroozi
Dobaradaran, Sina
Nabipour, Iraj
Ostovar, Afshin
Arfaeinia, Hossein
Vazirizadeh, Amir
Mirahmadi, Roghayeh
Keshtkar, Mozhgan
Ghasemi, Fatemeh Faraji
Khalifei, Farzaneh
author_sort Karbasdehi, Vahid Noroozi
collection PubMed
description BACKGROUND: The aim of present work was to assess the concentration levels as well as vertical distribution of indicator bacteria including total coliform, fecal coliform, Pseudomonas aeruginosa, and Heterotrophic Plate Count (HPC) in the marine environment (seawater and coastal sediments) and evaluate the correlation between indicator bacteria and some physicochemical parameters of surface sediments as well as seawaters. METHODS: A total number of 48 seawater and sediment samples were taken from 8 stations (each site 6 times with an interval time of 2 weeks) between June and September 2014. Seawater and sediment samples were collected from 30 cm under the surface samples and different sediment depths (0, 4, 7, 10, 15, and 20 cm) respectively, along the Persian Gulf in Bushehr coastal areas. RESULTS: Based on the results, the average numbers of bacterial indicators including total coliform, fecal coliform, and Pseudomonas aeruginosa as well as HPC in seawater samples were 1238.13, 150.87, 8.22 MPN/100 ml and 1742.91 CFU/ml, respectively, and in sediment samples at different depths (from 0-20 cm) varied between 25 × 10(3) to 51.67 × 10(3), 5.63 × 10(3) to 12.46 × 10(3), 17.33 to 65 MPN/100 ml, 36 × 10(3) to 147.5 × 10(3) CFU/ml, respectively. There were no statistically significant relationships between the indicator organism concentration levels with temperature as well as pH value of seawater. A reverse correlation was found between the level of indicator bacteria and salinity of seawater samples. Also results revealed that the sediment texture influenced abundance of indicators bacteria in sediments. As the concentration levels of indicators bacteria were higher in muddy sediments compare with sandy ones. CONCLUSION: Result conducted Bushehr coastal sediments constitute a reservoir of indicator bacteria, therefore, whole of the indicators determined were distinguished to be present in higher levels in sediments than in the overlying seawater. It was concluded that the concentration levels of microbial indicators decreased with depth in sediments. Except total coliform, the numbers of other bacteria including fecal coliform, Pseudomonas aeruginosa and HPC bacteria significantly declined in the depth between 10 and 15 cm.
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spelling pubmed-53451692017-03-14 Indicator bacteria community in seawater and coastal sediment: the Persian Gulf as a case Karbasdehi, Vahid Noroozi Dobaradaran, Sina Nabipour, Iraj Ostovar, Afshin Arfaeinia, Hossein Vazirizadeh, Amir Mirahmadi, Roghayeh Keshtkar, Mozhgan Ghasemi, Fatemeh Faraji Khalifei, Farzaneh J Environ Health Sci Eng Research Article BACKGROUND: The aim of present work was to assess the concentration levels as well as vertical distribution of indicator bacteria including total coliform, fecal coliform, Pseudomonas aeruginosa, and Heterotrophic Plate Count (HPC) in the marine environment (seawater and coastal sediments) and evaluate the correlation between indicator bacteria and some physicochemical parameters of surface sediments as well as seawaters. METHODS: A total number of 48 seawater and sediment samples were taken from 8 stations (each site 6 times with an interval time of 2 weeks) between June and September 2014. Seawater and sediment samples were collected from 30 cm under the surface samples and different sediment depths (0, 4, 7, 10, 15, and 20 cm) respectively, along the Persian Gulf in Bushehr coastal areas. RESULTS: Based on the results, the average numbers of bacterial indicators including total coliform, fecal coliform, and Pseudomonas aeruginosa as well as HPC in seawater samples were 1238.13, 150.87, 8.22 MPN/100 ml and 1742.91 CFU/ml, respectively, and in sediment samples at different depths (from 0-20 cm) varied between 25 × 10(3) to 51.67 × 10(3), 5.63 × 10(3) to 12.46 × 10(3), 17.33 to 65 MPN/100 ml, 36 × 10(3) to 147.5 × 10(3) CFU/ml, respectively. There were no statistically significant relationships between the indicator organism concentration levels with temperature as well as pH value of seawater. A reverse correlation was found between the level of indicator bacteria and salinity of seawater samples. Also results revealed that the sediment texture influenced abundance of indicators bacteria in sediments. As the concentration levels of indicators bacteria were higher in muddy sediments compare with sandy ones. CONCLUSION: Result conducted Bushehr coastal sediments constitute a reservoir of indicator bacteria, therefore, whole of the indicators determined were distinguished to be present in higher levels in sediments than in the overlying seawater. It was concluded that the concentration levels of microbial indicators decreased with depth in sediments. Except total coliform, the numbers of other bacteria including fecal coliform, Pseudomonas aeruginosa and HPC bacteria significantly declined in the depth between 10 and 15 cm. BioMed Central 2017-03-10 /pmc/articles/PMC5345169/ /pubmed/28293427 http://dx.doi.org/10.1186/s40201-017-0266-2 Text en © The Author(s). 2017 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research Article
Karbasdehi, Vahid Noroozi
Dobaradaran, Sina
Nabipour, Iraj
Ostovar, Afshin
Arfaeinia, Hossein
Vazirizadeh, Amir
Mirahmadi, Roghayeh
Keshtkar, Mozhgan
Ghasemi, Fatemeh Faraji
Khalifei, Farzaneh
Indicator bacteria community in seawater and coastal sediment: the Persian Gulf as a case
title Indicator bacteria community in seawater and coastal sediment: the Persian Gulf as a case
title_full Indicator bacteria community in seawater and coastal sediment: the Persian Gulf as a case
title_fullStr Indicator bacteria community in seawater and coastal sediment: the Persian Gulf as a case
title_full_unstemmed Indicator bacteria community in seawater and coastal sediment: the Persian Gulf as a case
title_short Indicator bacteria community in seawater and coastal sediment: the Persian Gulf as a case
title_sort indicator bacteria community in seawater and coastal sediment: the persian gulf as a case
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5345169/
https://www.ncbi.nlm.nih.gov/pubmed/28293427
http://dx.doi.org/10.1186/s40201-017-0266-2
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