| Kategorie |
Textpublikation |
| Referenztyp |
Zeitschriften |
| DOI |
10.1111/1365-2745.13556
|
Lizenz  |
|
| Titel (primär) |
Plant diversity enhances production and downward transport of biodegradable dissolved organic matter |
| Autor |
Lange, M.; Roth, V.-N.; Eisenhauer, N.; Roscher, C.; Dittmar, T.; Fischer-Bedtke, C.; González Macé, O.; Hildebrandt, A.; Milcu, A.; Mommer, L.; Oram, N.J.; Ravenek, J.; Scheu, S.; Schmid, B.; Strecker, T.; Wagg, C.; Weigelt, A.; Gleixner, G. |
| Quelle |
Journal of Ecology |
| Erscheinungsjahr |
2021 |
| Department |
CHS; NSF; iDiv; PHYDIV |
| Band/Volume |
109 |
| Heft |
3 |
| Seite von |
1284 |
| Seite bis |
1297 |
| Sprache |
englisch |
| Topic |
T5 Future Landscapes |
| Daten-/Softwarelinks |
https://doi.org/10.1594/PANGAEA.880330
https://doi.org/10.1594/PANGAEA.885439
https://doi.org/10.17617/3.28
https://doi.org/10.17617/3.52
https://doi.pangaea.de/10.1594/PANGAEA.854694
https://doi.pangaea.de/10.1594/PANGAEA.880324 |
| Supplements |
https://besjournals.onlinelibrary.wiley.com/action/downloadSupplement?doi=10.1111%2F1365-2745.13556&file=jec13556-sup-0001-AppendixS1-S9.docx |
| Keywords |
Biodiversity; Decomposition; Dissolved organic carbon; Ecosystem functions and services; Plant–soil interactions; Subsoil; Vegetation |
| Abstract |
- Plant diversity is an important driver of belowground
ecosystem functions, such as root growth, soil organic matter (SOM)
storage, and microbial metabolism, mainly by influencing the
interactions between plant roots and soil. Dissolved organic matter
(DOM), as the most mobile form of SOM, plays a crucial role for a
multitude of soil processes that are central for ecosystem functioning.
Thus, DOM is likely to be an important mediator of plant diversity
effects on soil processes. However, the relationships between plant
diversity and DOM have not been studied so far.
- We investigated the mechanisms underlying plant
diversity effects on concentrations of DOM using continuous soil water
sampling across 6 years and 62 plant communities in a long‐term
grassland biodiversity experiment in Jena, Germany. Furthermore, we
investigated plant diversity effects on the molecular properties of DOM
in a subset of the samples.
- Although DOM concentrations were highly variable over
the course of the year with highest concentrations in summer and autumn,
we found that DOM concentrations consistently increased with plant
diversity across seasons. The positive plant diversity effect on DOM
concentrations was mainly mediated by increased microbial activity and
newly sequestered carbon in topsoil. However, the effect of soil
microbial activity on DOM concentrations differed between seasons,
indicating DOM consumption in winter and spring, and DOM production in
summer and autumn. Furthermore, we found increased contents of small and
easily decomposable DOM molecules reaching deeper soil layers with high
plant diversity.
- Synthesis. Our findings suggest that plant
diversity enhances the continuous downward transport of DOM in multiple
ways. On the one hand, higher plant diversity results in higher DOM
concentrations, on the other hand, this DOM is less degraded. The
present study indicates, for the first time, that higher plant diversity
enhances the downward transport of dissolved molecules that likely
stimulate soil development in deeper layers and therefore increase soil
fertility.
|
| dauerhafte UFZ-Verlinkung |
https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=23891 |
Lange, M., Roth, V.-N., Eisenhauer, N., Roscher, C., Dittmar, T., Fischer-Bedtke, C., González Macé, O., Hildebrandt, A., Milcu, A., Mommer, L., Oram, N.J., Ravenek, J., Scheu, S., Schmid, B., Strecker, T., Wagg, C., Weigelt, A., Gleixner, G. (2021):
Plant diversity enhances production and downward transport of biodegradable dissolved organic matter
J. Ecol. 109 (3), 1284 - 1297 10.1111/1365-2745.13556 |
