Soil nematode response to root production in grasslands on fen peat soils

Wasilewska, Lucyna

doi:ISSN 1505-2249

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Title: Soil nematode response to root production in grasslands on fen peat soils

Abstract:

The density of soil nematodes was examined in relation to root production in peat grass lands that differed in the origin of peat and, consequently, in moisture and in physical and chemical soil properties. Root production was estimated by using the root ingrowth technique, and expressed in g dry wt m-2, over the period April-October. Total nematodes, bacterivores, fungivores, and facultative plant feeders were not correlated with root production. Obligate plant feeders and the number of taxa forming this group were negatively correlated with root production. The ratio of numbers of bacterivorous + fungivorous to obligate plant feeding nematodes was highly positively correlated with root production. Based on earlier publications, the author argues that the specific character of drained peat soils, that is, intensified N and C mineralization, obstructs full understanding of the relationship between root production and nematode abundance, especially in the case of nematodes from the detritus food web.

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