Universität zu Köln

Stefana, Geisen, Cornelia, Bandow, Joerg, Roembke and Michael, Bonkowski (2014). Soil water availability strongly alters the community composition of soil protists. Pedobiologia, 57 (4-6). S. 205 - 214. MUNICH: ELSEVIER GMBH. ISSN 0031-4056

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Abstract

Drought and heavy rainfall are contrasting conditions expected to result from increasingly extreme weather during climate change; and both scenarios will strongly affect the functioning of soil systems. However, little is known about the specific responses of soil microorganisms, whose functioning is intimately tied to the magnitude of the water-filled pore space in soil. Soil heterotrophic protists, being important aquatic soil organisms are considered as key-regulators of microbial nutrient turnover. We investigated the responses of distinct protist taxa to changes in soil water availability (SWA) using a modified enumeration technique that enabled quantification of protist taxa up to genus level. Our study revealed a non-linear shift of protist abundance with decreasing SWA and this became apparent at a maximum water-filled pore size of <= 40 mu m. Generally, taxa containing large specimen were more severely affected by drought, but responses to either drought or rewetting of soils were not uniform among taxa. Changes in water availability may thus affect the functioning of key taxa and soil ecosystems long before aboveground drought effects become apparent. (C) 2014 Elsevier GmbH. All rights reserved.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Stefana, Geisen UNSPECIFIED UNSPECIFIED UNSPECIFIED Cornelia, Bandow UNSPECIFIED UNSPECIFIED UNSPECIFIED Joerg, Roembke UNSPECIFIED UNSPECIFIED UNSPECIFIED Michael, Bonkowski UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-452644
DOI:	10.1016/j.pedobi.2014.10.001
Journal or Publication Title:	Pedobiologia
Volume:	57
Number:	4-6
Page Range:	S. 205 - 214
Date:	2014
Publisher:	ELSEVIER GMBH
Place of Publication:	MUNICH
ISSN:	0031-4056
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language FREE-LIVING AMEBAS; PLANT-GROWTH; TERRESTRIAL GYMNAMOEBAE; REVISED CLASSIFICATION; N MINERALIZATION; ORGANIC-MATTER; MICROBIAL LOOP; RAIN-FOREST; FOOD WEBS; PROTOZOA Multiple languages Ecology; Soil Science Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/45264