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Soil biota of different size classes change the impact of soil compaction on a plant community
Author(s) -
Beck Mara E.,
Wurst Susanne
Publication year - 2013
Publication title -
applied vegetation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.096
H-Index - 64
eISSN - 1654-109X
pISSN - 1402-2001
DOI - 10.1111/avsc.12033
Subject(s) - soil compaction , soil biology , environmental science , plant community , biota , agronomy , ruderal species , soil science , ecology , soil water , biology , species richness , habitat
Question Does a reduction in size class of soil biota aggravate the impacts of soil compaction on plant communities? Location Controlled mesocosm study with a E uropean ruderal plant community exposed to soil compaction and soil biota communities of different size classes. Methods We evaluated the individual and combined effects of soil compaction and soil biota communities of different size classes (<2000, <212, <20 μm, natural control) on the structure and productivity of a ruderal plant community, and the establishment of a neophyte ( L upinus polyphyllus ) in a full‐factorial mesocosm study. Results Soil compaction reduced the productivity of the plant community, but the negative effect decreased in magnitude as the size class of the soil biota community was reduced. Consistently, shoot growth of the dominant grasses was most reduced by soil compaction when bigger soil biota were present; the shoot growth of forbs showed an opposite pattern. In contrast, legumes seem to profit from soil compaction independent of the size class of the soil biota community, and were detrimentally affected only in the natural control soil. Establishment of the neophyte L . polyphyllus was best under natural soil conditions and was not affected by soil compaction. Conclusions A reduction in soil biota size due to intensified management may change the impacts of soil compaction on plant communities. The results indicate that soil compaction has the most detrimental effect on primary productivity in soil communities where a range of size classes of soil biota is present and the functional complexity of the soil biota community is therefore high.