Details
| Original language | English |
|---|---|
| Title of host publication | Lecture Notes in Earth System Sciences |
| Place of Publication | Cham |
| Publisher | Springer International Publishing AG |
| Pages | 501-515 |
| Number of pages | 15 |
| ISBN (electronic) | 978-3-030-21614-6 |
| ISBN (print) | 978-3-030-21613-9 |
| Publication status | Published - 2019 |
Publication series
| Name | Lecture Notes in Earth System Sciences |
|---|---|
| ISSN (Print) | 2193-8571 |
| ISSN (electronic) | 2193-858X |
Abstract
Morphologically simple and microbially dominated ecosystems termed “biofilms” have existed on Earth for a long period of biosphere evolution. A model biofilm combining one heterotroph and one phototroph component was used in a laboratory experiment to simulate biogenic weathering with two different specimens of basic rock samples from the soil profiles. The rocks fragments from the regions of cold environments of Eurasia, where abiotic physical processes, including rock disintegration initiated by freezing–thawing cycles, represent the most probable scenario of rock weathering, were subjected to biological colonization. The rock fragments were represented by dolerite and metagabbro amphibolites. Polished sections of the rock samples were inoculated with the model microbiological consortium of the oligotrophic fungus and the phototrophic cyanobacteria (biofilm). After 3 month runtime of the experiment the progress of rock weathering was derived from the growth of the biofilm on the rock surfaces. The model biofilm visualization on the rock surface of polished sections illustrated their stronger development namely on dolerite in comparison with metagabbro amphibolite. The findings confirmed the higher sensitivity of dolerite to biogenic weathering due to (i) mineral association, in which quartz was absent and (ii) porosity providing higher specific surface area for biotic—abiotic interaction influenced by the occurrence of micro-porosity in the rock.
Keywords
- Biofilm formation, Biogenic weathering, Fractal structure, Internal pores, Rock leaching
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Computers in Earth Sciences
- Earth and Planetary Sciences(all)
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Lecture Notes in Earth System Sciences. Cham: Springer International Publishing AG, 2019. p. 501-515 (Lecture Notes in Earth System Sciences).
Research output: Chapter in book/report/conference proceeding › Contribution to book/anthology › Research › peer review
}
TY - CHAP
T1 - Modeling biogenic weathering of rocks from soils of cold environments
AU - Lessovaia, Sofia N.
AU - Gerrits, Ruben
AU - Gorbushina, Anna A.
AU - Polekhovsky, Yury S.
AU - Dultz, Stefan
AU - Kopitsa, Gennady G.
N1 - Funding information: The research is based on a senior research stay (S. Lessovaia) at FUB in 2016 supported by UAS. Authors thank Institute for Solid State Physics and Optics (Neutron Spectroscopy Department) of Hungarian Academy of Sciences for the possibility of carrying out a neutron experiment at the facility “Yellow submarine” (reactor BRR, Budapest Neutron Centre, Hungary).
PY - 2019
Y1 - 2019
N2 - Morphologically simple and microbially dominated ecosystems termed “biofilms” have existed on Earth for a long period of biosphere evolution. A model biofilm combining one heterotroph and one phototroph component was used in a laboratory experiment to simulate biogenic weathering with two different specimens of basic rock samples from the soil profiles. The rocks fragments from the regions of cold environments of Eurasia, where abiotic physical processes, including rock disintegration initiated by freezing–thawing cycles, represent the most probable scenario of rock weathering, were subjected to biological colonization. The rock fragments were represented by dolerite and metagabbro amphibolites. Polished sections of the rock samples were inoculated with the model microbiological consortium of the oligotrophic fungus and the phototrophic cyanobacteria (biofilm). After 3 month runtime of the experiment the progress of rock weathering was derived from the growth of the biofilm on the rock surfaces. The model biofilm visualization on the rock surface of polished sections illustrated their stronger development namely on dolerite in comparison with metagabbro amphibolite. The findings confirmed the higher sensitivity of dolerite to biogenic weathering due to (i) mineral association, in which quartz was absent and (ii) porosity providing higher specific surface area for biotic—abiotic interaction influenced by the occurrence of micro-porosity in the rock.
AB - Morphologically simple and microbially dominated ecosystems termed “biofilms” have existed on Earth for a long period of biosphere evolution. A model biofilm combining one heterotroph and one phototroph component was used in a laboratory experiment to simulate biogenic weathering with two different specimens of basic rock samples from the soil profiles. The rocks fragments from the regions of cold environments of Eurasia, where abiotic physical processes, including rock disintegration initiated by freezing–thawing cycles, represent the most probable scenario of rock weathering, were subjected to biological colonization. The rock fragments were represented by dolerite and metagabbro amphibolites. Polished sections of the rock samples were inoculated with the model microbiological consortium of the oligotrophic fungus and the phototrophic cyanobacteria (biofilm). After 3 month runtime of the experiment the progress of rock weathering was derived from the growth of the biofilm on the rock surfaces. The model biofilm visualization on the rock surface of polished sections illustrated their stronger development namely on dolerite in comparison with metagabbro amphibolite. The findings confirmed the higher sensitivity of dolerite to biogenic weathering due to (i) mineral association, in which quartz was absent and (ii) porosity providing higher specific surface area for biotic—abiotic interaction influenced by the occurrence of micro-porosity in the rock.
KW - Biofilm formation
KW - Biogenic weathering
KW - Fractal structure
KW - Internal pores
KW - Rock leaching
UR - http://www.scopus.com/inward/record.url?scp=85072081223&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-21614-6_27
DO - 10.1007/978-3-030-21614-6_27
M3 - Contribution to book/anthology
AN - SCOPUS:85072081223
SN - 978-3-030-21613-9
T3 - Lecture Notes in Earth System Sciences
SP - 501
EP - 515
BT - Lecture Notes in Earth System Sciences
PB - Springer International Publishing AG
CY - Cham
ER -