Microbial biobanking – cyanobacteria-rich topsoil facilitates mine rehabilitation

Williams, Wendy; Chilton, Angela; Schneemilch, Mel; Williams, Stephen; Neilan, Brett; Driscoll, Colin

doi:https://doi.org/10.5194/bg-16-2189-2019

Articles | Volume 16, issue 10

Biogeosciences, 16, 2189–2204, 2019

https://doi.org/10.5194/bg-16-2189-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Special issue: Biological soil crusts and their role in biogeochemical processes...

Biogeosciences, 16, 2189–2204, 2019

https://doi.org/10.5194/bg-16-2189-2019

© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 16, issue 10

Research article 28 May 2019

Research article | 28 May 2019

Microbial biobanking – cyanobacteria-rich topsoil facilitates mine rehabilitation

Wendy Williams et al.

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Mar 2018	4	5	0	9
Apr 2018	5	2	0	7
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Mar 2019	5	3	0	8
Apr 2019	3	7	0	10
May 2019	101	27	1	129
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Jul 2019	23	16	1	40
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Short summary

Rare earth mining processes require the removal of topsoil that is mechanically scraped off and relocated to topsoil stockpiles, which proved beneficial for microbial biobanking. But there appears to be a critical time frame for holding topsoil, and rainfall penetration into the stockpile may result in the demise of cyanobacteria. In the longer term, provided conditions are favourable, there may be adequate cyanobacterial survival, at least down to 50 cm, to recolonise the soil surfaces.

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Microbial biobanking – cyanobacteria-rich topsoil facilitates mine rehabilitation

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