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Response of peatland testate amoebae to simulated distal volcanogenic deposition of sulfate

Payne, Richard; Gauci, Vincent and Charman, Dan J. (2010). Response of peatland testate amoebae to simulated distal volcanogenic deposition of sulfate. Microbial Ecology, 59(1) pp. 76–83.

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Peatlands subjected to sulfate deposition have been shown to produce less methane, believed to be due to competitive exclusion of methanogenic archaea by sulfate-reducing bacteria. Here, we address whether sulfate deposition produces impacts on a higher microbial group, the testate amoebae. Sodium sulfate was applied to experimental plots on a Scottish peatland and samples extracted after a period of more than 10 years. Impacts on testate amoebae were tested using redundancy analysis and Mann-Whitney tests. Results showed statistically significant impacts on amoebae communities particularly noted by decreased abundance of Trinema lineare, Corythion dubium, and Euglypha rotunda. As the species most reduced in abundance are all small bacterivores we suggest that our results support the hypothesis of a shift in dominant prokaryotes, although other explanations are possible. Our results demonstrate the sensitivity of peatland microbial communities to sulfate deposition and suggest sulfate may be a potentially important secondary control on testate amoebae communities.

Item Type: Journal Item
Copyright Holders: 2009 Springer Science + Business Media, LLC
ISSN: 0095-3628
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Environment, Earth and Ecosystem Sciences
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Research Group: OpenSpace Research Centre (OSRC)
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Item ID: 25565
Depositing User: Vincent Gauci
Date Deposited: 16 Dec 2010 15:18
Last Modified: 16 Jun 2020 05:11
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