Earthworms in an enhanced weathering mesocosm experiment: Effects on soil carbon sequestration, base cation exchange and soil CO2 efflux
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F24%3A10487540" target="_blank" >RIV/00216208:11310/24:10487540 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=1Gfwl697r9" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=1Gfwl697r9</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.soilbio.2024.109596" target="_blank" >10.1016/j.soilbio.2024.109596</a>
Alternative languages
Result language
angličtina
Original language name
Earthworms in an enhanced weathering mesocosm experiment: Effects on soil carbon sequestration, base cation exchange and soil CO2 efflux
Original language description
Despite its attractiveness for long-term carbon dioxide removal (CDR), quantifying weathering and CDR rates for enhanced weathering is a significant challenge. Moreover, the role of soil organisms, such as earthworms, in enhancing silicate weathering (both physically and chemically) has been suggested, but there is limited quantitative data on how biota, especially earthworms, contribute to inorganic carbon sequestration. To address these gaps, we conducted a mesocosm experiment with earthworms and basalt. Results indicate increases in clay and cation exchange, causing a weathering rate of over 10(-12) mol total alkalinity m(2) s(-1), in range with other basalt experiments. Basalt amendment increased dissolved inorganic carbon export by only 4 g CO2 m(-2). During the 4.5-month experiment, we observed neither a change in organic nor in inorganic carbon content. In soils without earthworms, basalt amendment reduced soil CO2 efflux by approximately 0.2 kg CO2 m(2), suggesting considerable CDR. This decrease was about two times larger than calculated inorganic CDR equivalents, suggesting changes in soil organic matter dynamics. Interestingly, earthworms reversed the basalt-induced reduction in soil CO2 efflux. This reversal was partly due to reduced export of dissolved inorganic carbon but mainly driven by increased organic matter decomposition. Our study highlights the importance of including organic carbon dynamics when evaluating the CDR potential of enhanced weathering.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10511 - Environmental sciences (social aspects to be 5.7)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Soil Biology and Biochemistry
ISSN
0038-0717
e-ISSN
1879-3428
Volume of the periodical
199
Issue of the periodical within the volume
December
Country of publishing house
GB - UNITED KINGDOM
Number of pages
16
Pages from-to
109596
UT code for WoS article
001328023800001
EID of the result in the Scopus database
2-s2.0-85205149077