Universität zu Köln

Siebert, Julia, Eisenhauer, Nico ORCID: 0000-0002-0371-6720, Poll, Christian, Marhan, Sven, Bonkowski, Michael, Hines, Jes, Koller, Robert ORCID: 0000-0001-7251-7242, Ruess, Liliane and Thakur, Madhav P. (2019). Earthworms modulate the effects of climate warming on the taxon richness of soil meso- and macrofauna in an agricultural system. Agric. Ecosyst. Environ., 278. S. 72 - 81. AMSTERDAM: ELSEVIER. ISSN 1873-2305

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Abstract

Anthropogenic climate change is altering the functioning of terrestrial ecosystems. Agricultural systems are particularly vulnerable to climate change as they are frequently disturbed by intensified management practices. This also threatens belowground organisms that are responsible for providing crucial ecosystem functions and services, such as nutrient cycling and plant disease suppression. Amongst these organisms, earthworms are of particular importance as they can modulate the effects of climate change on soil organisms by modifying the biotic and abiotic soil conditions. However, they are also known to decline under intensified management, justifying their use as key biotic indicators of intensified agriculture. Yet, our knowledge of the responses of belowground species to the interacting effects of warming and land-use intensification (simulated by earthworm reduction in the experimental setup) remains limited. Here, we tested the interactive effects of soil warming and reduced earthworm densities on soil protists, nematodes, meso- and macrofauna, and their diversity in a common barley system in the Hohenheim Climate Change Experiment. We found that belowground species richness was lowest at elevated temperature and reduced earthworm densities, indicating that earthworms can buffer warming effects on belowground biodiversity. Furthermore, warming increased the densities of plant feeding nematodes, and herbivorous macrofauna benefitted from reduced earthworm densities. Our results indicate that warming and reduced earthworm densities may simultaneously modify the functioning and service provisioning of soils via shifts in diversity and density of soil biota that would likely lead to simplified below ground food webs. These findings thus highlight the importance of maintaining greater densities of ecosystem engineers like earthworms that may help buffering the detrimental effects of climate warming in agricultural systems.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Siebert, Julia UNSPECIFIED UNSPECIFIED UNSPECIFIED Eisenhauer, Nico UNSPECIFIED orcid.org/0000-0002-0371-6720 UNSPECIFIED Poll, Christian UNSPECIFIED UNSPECIFIED UNSPECIFIED Marhan, Sven UNSPECIFIED UNSPECIFIED UNSPECIFIED Bonkowski, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Hines, Jes UNSPECIFIED UNSPECIFIED UNSPECIFIED Koller, Robert UNSPECIFIED orcid.org/0000-0001-7251-7242 UNSPECIFIED Ruess, Liliane UNSPECIFIED UNSPECIFIED UNSPECIFIED Thakur, Madhav P. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-138384
DOI:	10.1016/j.agee.2019.03.004
Journal or Publication Title:	Agric. Ecosyst. Environ.
Volume:	278
Page Range:	S. 72 - 81
Date:	2019
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1873-2305
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ELEVATED CO2; LAND-USE; COMMUNITY COMPOSITION; NEMATODE COMMUNITIES; EXTRACTION METHOD; SAMPLING METHODS; OCTET-METHOD; BIODIVERSITY; TEMPERATURE; POPULATIONS Multiple languages Agriculture, Multidisciplinary; Ecology; Environmental Sciences Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/13838