Universität zu Köln

Sun, Daquan ORCID: 0000-0003-0270-6421, Ardestani, Masoud M., Pohorely, Michael ORCID: 0000-0001-8803-8131, Mosko, Jaroslav, Winding, Anne, Bonkowski, Michael, Zhao, Ying and Frouz, Jan (2022). Does micro-sized pyrogenic carbon made in lab affect earthworm mortality in restrained water content? Appl. Soil Ecol., 177. AMSTERDAM: ELSEVIER. ISSN 1873-0272

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Abstract

Micro-sized pyrogenic carbon (PyC) is expected to interact more efficiently with soil biota such as earthworms than coarse pyrogenic carbon. Little is known about whether the micro-sized PyC poses a threat to earthworms. We investigated the effects of hydrophilic micro-sized PyC on earthworm mortality in two contrasting soil substrates from young and old reclaimed soils of a successional chronosequence. These two soil substrates had different hydraulic properties, total organic carbon, pH, and nutrient status. Lower earthworm survival rates were observed in both soil substrates receiving dry micro-sized soil particles and the micro-sized PyC. Specifically, the addition of micro-sized PyC resulted in the lowest survival rate compared to the addition of micro sized soil particles and the control from day 8 to 11. The decreased earthworm survival rate due to micro sized PyC was more pronounced in the old soil substrate than in the young substrate. Fully moistened soil substrates containing micro-sized PyC or dry micro-sized soil substrate particles did not result in decreased earthworm survival. Micro-sized PyC turned from hydrophilic to hydrophobic when mixed with rhamnolipids, possibly hindering the uptake of dissolved oxygen by earthworm skins. Our results thus provide a new explanation for the negative effects of micro-sized PyC on earthworms and demonstrate the importance of assessing the hydraulic properties of both the micro-sized PyC and soil prior to PyC's application to soils.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Sun, Daquan UNSPECIFIED orcid.org/0000-0003-0270-6421 UNSPECIFIED Ardestani, Masoud M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Pohorely, Michael UNSPECIFIED orcid.org/0000-0001-8803-8131 UNSPECIFIED Mosko, Jaroslav UNSPECIFIED UNSPECIFIED UNSPECIFIED Winding, Anne UNSPECIFIED UNSPECIFIED UNSPECIFIED Bonkowski, Michael UNSPECIFIED UNSPECIFIED UNSPECIFIED Zhao, Ying UNSPECIFIED UNSPECIFIED UNSPECIFIED Frouz, Jan UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-687403
DOI:	10.1016/j.apsoil.2022.104540
Journal or Publication Title:	Appl. Soil Ecol.
Volume:	177
Date:	2022
Publisher:	ELSEVIER
Place of Publication:	AMSTERDAM
ISSN:	1873-0272
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language BIOCHAR; QUALITY Multiple languages Soil Science Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/68740