Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 559266
Title Soil water availability strongly alters the community composition of soil protists
Author(s) Stefan, Geisen; Cornelia, Bandow; Jörg, Römbke; Michael, Bonkowski
Source Pedobiologia 57 (2014)4-6. - ISSN 0031-4056 - p. 205 - 213.
Publication type Refereed Article in a scientific journal
Publication year 2014
Keyword(s) Amoebae (Amoebozoa) - Biodiversity - Climate change - Protists - Soil moisture

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. μm. 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.

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