Impact of litter species diversity on decomposition processes and communities of soil organisms

M. Szanser , K. Ilieva-Makulec , A. Kajak , Ewa Górska , Alina Kusińska , M. Kisiel , I. Olejniczak , S. Russel , D. Sieminiak , D. Wojewoda

Abstract

The effect of plant species diversity and the C/N ratio of litter on soil processes were analysed in mesocosms in a three year field experiment. Plots 0.5 × 0.5 m with a depth of 15 cm containing sand mixed with loam were used to compare five natural and one artificial litter type (polypropylene string). Natural litters were either monospecific (I: Dactylis glomerata; II: Festuca rubra and III: Trifolium pratense) or were species mixtures (IV: mixture of three species I, II and III; V: mixture of twelve species, IV and nine other meadow plants). Differences among treatments in the litter decomposition rate, humic acid content and nematode density depended on the litter quality (C:N ratio) in most cases. By contrast, most of the differences among treatments found in the substratum below the litter cover resulted from litter diversity. The largest increase of carbon and nitrogen amount during growing season was found under litter mixtures (IV, V) and the highest fulvic acid content under the most diverse litter (V). Similarly, the production of algae in the substratum also significantly increased with litter diversity. Higher taxonomic diversity of Nematoda and Collembola and the most mature community of nematodes were observed under the most complex litter. Epigeic macrofauna, both dwelling in and penetrating the litter, did not differ significantly between experimental treatments. However, the highest share of predators was found in the treatment with the richest plant species diversity. In general, the results suggest that the decomposition of diverse plant litter enhances humus acid accumulation in soils. It is likely that algae participate in the process of humus formation.
Author M. Szanser
M. Szanser,,
-
, K. Ilieva-Makulec
K. Ilieva-Makulec,,
-
, A. Kajak
A. Kajak,,
-
, Ewa Górska LEKŚP
Ewa Górska,,
- Ergonomics and Work Environment Management Department
, Alina Kusińska IB
Alina Kusińska,,
- Insitute of Civil Engineering
, M. Kisiel
M. Kisiel,,
-
, I. Olejniczak
I. Olejniczak,,
-
, S. Russel
S. Russel,,
-
, D. Sieminiak
D. Sieminiak,,
-
, D. Wojewoda
D. Wojewoda,,
-
Journal seriesSoil Biology & Biochemistry, ISSN 0038-0717
Issue year2011
Vol43
No1
Pages9-19
Keywords in EnglishAlgal biomass and production, Litter species diversity, Microbial activity, Micro-, meso- and macrofauna, Soil humus
DOIDOI:10.1016/j.soilbio.2010.08.031
URL http://www.sciencedirect.com/science/article/pii/S0038071710003196
Score (nominal)50
Publication indicators WoS Impact Factor [Impact Factor WoS]: 2011 = 3.504 (2) - 2011=4.024 (5)
Citation count*25 (2015-05-07)
Cite
Share Share

Get link to the record
msginfo.png


* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
Back