- Title
- Distinct responses of bacterial communities to agricultural and urban impacts in temperate southern African estuaries
- Creator
- Matcher, Gwynneth F, Froneman, P William, Meiklejohn, Ian, Dorrington, Rosemary A
- Subject
- To be catalogued
- Date
- 2018
- Type
- text
- Type
- article
- Identifier
- http://hdl.handle.net/10962/479218
- Identifier
- vital:78271
- Identifier
- https://doi.org/10.1016/j.ecss.2017.11.015
- Description
- Worldwide, estuaries are regarded as amongst the most ecologically threatened ecosystems and are increasingly being impacted by urban development, agricultural activities and reduced freshwater inflow. In this study, we examined the influence of different human activities on the diversity and structure of bacterial communities in the water column and sediment in three distinct, temperate permanently open estuarine systems within the same geographic region of southern Africa. The Kariega system is freshwater-deprived and is considered to be relatively pristine; the Kowie estuary is marine-dominated and impacted by urban development, while the Sundays system is fresh-water dominated and impacted by agricultural activity in its catchment. The bacterial communities in all three systems comprise predominantly heterotrophic species belonging to the Bacteroidetes and Proteobacteria phyla with little overlap between bacterioplankton and benthic bacterial communities at the species level. There was overlap between the operational taxonomic units (OTUs) of the Kowie and Kariega, both marine-influenced estuaries. However, lower species richness in the Kowie, likely reflects the impact of human settlements along the estuary. The dominant OTUs in the Sundays River system were distinct from those of the Kariega and Kowie estuaries with an overall decrease in species richness and evenness. This study provides an important snapshot into the microbial population structures of permanently open temperate estuarine systems and the influence of anthropogenic impacts on bacterial diversity and community structure.
- Format
- 9 pages, pdf
- Language
- English
- Relation
- Estuarine, Coastal and Shelf Science, Matcher, G.F., Froneman, P.W., Meiklejohn, I. and Dorrington, R.A., 2018. Distinct responses of bacterial communities to agricultural and urban impacts in temperate southern African estuaries. Estuarine, Coastal and Shelf Science, 200, pp.224-233, Estuarine, Coastal and Shelf Science volume 200 number 1 224 233 2018 1096-0015
- Rights
- Publisher
- Rights
- Use of this resource is governed by the terms and conditions of the Elsevier Terms and Conditions Statement (https://www.elsevier.com/legal/elsevier-website-terms-and-conditions)
- Hits: 1
- Visitors: 2
- Downloads: 0
Collections
Meiklejohn, Ian (Prof)
Matcher, Gwynneth (Dr)
Dorrington, Rosemary A (Prof)
RU DST/NRF SARChI for Marine Natural Products
RU Department of Geography
RU DST/NRF SARChI for Marine Ecosystems and Resources
Froneman, Pierre William (Prof)
SDG 06. Clean Water and Sanitation
RU Department of Zoology and Entomology
SDG 03. Good Health and Well-Being
SDG 14. Life Below Water
RU Department of Biochemistry, Microbiology and Bioinformatics
| Thumbnail | File | Description | Size | Format | |||
|---|---|---|---|---|---|---|---|
| View Details Download | SOURCE1 | Distinct responses of bacterial communities to agricultural and urban impacts in temperate southern African estuaries.pdf | 664 KB | Adobe Acrobat PDF | View Details Download |