bei Google ScholarTitelangaben
Pausch, Johanna ; Hünninghaus, Maike ; Kramer, Susanne ; Scharroba, Anika ; Scheunemann, Nicole ; Butenschoen, Olaf ; Marhan, Sven ; Bonkowski, Michael ; Kandeler, Ellen ; Scheu, Stefan ; Kuzyakov, Yakov ; Ruess, Liliane:
Carbon budgets of top- and subsoil food webs in an arable system.
In: Pedobiologia.
Bd. 69
(2018)
.
- S. 29-33.
ISSN 0031-4056
DOI: https://doi.org/10.1016/j.pedobi.2018.06.002
Abstract
This study assessed the carbon (C) budget and the C stocks in major compartments of the soil food web (bacteria, fungi, protists, nematodes, meso- and macrofauna) in an arable field with/without litter addition. The C stocks in the food web were more than three times higher in topsoil (0–10 cm) compared to subsoil (>40 cm). Microorganisms contained over 95% of food web C, with similar contributions of bacteria and fungi in topsoil. Litter addition did not alter C pools of soil biota after one growing season, except for the increase of fungi and fungal feeding nematodes in the topsoil. However, the C budget for functional groups changed with depth, particularly in the microfauna. This suggests food web resilience to litter amendment in terms of C pool sizes after one growing season. In contrast, the distinct depth dependent pattern indicates specific metacommunities, likely shaped by dominant abiotic and biotic habitat properties.