Articles | Volume 23, issue 21
https://doi.org/10.5194/bg-23-8319-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-8319-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
13 Nov 2026
Research article |
| 13 Nov 2026
| 13 Nov 2026
Fresh tephra deposits from the Tajogaite Volcano boost thermophile proliferation and soil organic matter recovery
Sara Gutiérrez-Patricio
Instituto de Recursos Naturales y Agrobiología de Sevilla(IRNAS-CSIC), Avda. Reina Mercedes 10, 41012, Seville, Spain
Alba Gómez-Arias
Instituto de Recursos Naturales y Agrobiología de Sevilla(IRNAS-CSIC), Avda. Reina Mercedes 10, 41012, Seville, Spain
Pedro Nolasco-Jiménez
Instituto de Recursos Naturales y Agrobiología de Sevilla(IRNAS-CSIC), Avda. Reina Mercedes 10, 41012, Seville, Spain
Jorge Mataix-Solera
Grupo de Edafología y Tecnologías del Medio Ambiente GETECMA, Departamento de Agroquímica y Medio Ambiente, Universidad Miguel Hernández, 03202 Elche, Alicante, Spain
Javier Martínez-Martínez
Instituto Geológico y Minero de España (IGME-CSIC), Rios Rosas 23, 28003 Madrid, Spain
Bruno Martínez-Haya
BIO-MS group, Department of Physical, Chemical and Natural Systems, Universidad Pablo de Olavide, 41013, Seville, Spain
Juana Vegas
Instituto Geológico y Minero de España (IGME-CSIC), Rios Rosas 23, 28003 Madrid, Spain
Nicasio T. Jiménez-Morillo
CORRESPONDING AUTHOR
Instituto de Recursos Naturales y Agrobiología de Sevilla(IRNAS-CSIC), Avda. Reina Mercedes 10, 41012, Seville, Spain
Instituto de Recursos Naturales y Agrobiología de Sevilla(IRNAS-CSIC), Avda. Reina Mercedes 10, 41012, Seville, Spain
Hercules Laboratory, University of Évora, Palacio do Vimioso, 7000-809, Évora, Portugal
Related authors
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Carlos Gabriel Morales, María Teresa Ortega, and Javier Martínez-Martínez
EGUsphere, https://doi.org/10.5194/egusphere-2026-1044, https://doi.org/10.5194/egusphere-2026-1044, 2026
Short summary
Short summary
We analyzed 30 years of daily records from 84 Spanish weather stations to assess evolving freezing and thawing patterns and cryoclastic indices. While freezing activity is concentrated in mountain regions and minimal in lowlands, trends reveal a general decline. Crucially, some high-altitude belts retain sustained, intense activity. Projections to 2050 indicate a progressive altitudinal restriction of effective freezing conditions, with significant implications for geomorphic processes.
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Short summary
The 2021 Tajogaite eruption on La Palma covered soils with volcanic ash, changing their organic matter and microbial communities. By studying soil chemistry and microorganisms at different depths, we found more easily degradable organic compounds just beneath the ash, alongside heat-loving bacteria. Our findings show how volcanic deposits and geothermal heat may influence soil carbon and nitrogen cycling, with implications for soil recovery in volcanic landscapes.
The 2021 Tajogaite eruption on La Palma covered soils with volcanic ash, changing their organic...
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