Analysis of a sheep pasture ecosystem in the Pieniny Mountains (the Carpathians). 17, Analysis of the transfer of carbon

Kajak, Anna

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Tytuł: Analysis of a sheep pasture ecosystem in the Pieniny Mountains (the Carpathians). 17, Analysis of the transfer of carbon

Abstrakt:

The paper presents the results of 3 year investigations performed by a group of workers on the transfer of carbon through two trophic chains – the detritus chain and the grazing chain. The investigations were performed on two areas of a pasture differing in the amounts of organic fertilizers applied. 86% of the field layer plant production was found to be used by sheep. A very large part of the consumed mass returns to the ecosystem in the form of manure which decomposes much faster than unprocessed dead plant matter. Coprophages play an important role in the process of manure decomposition. After isolation from these animals the rate of manure decomposition decreased by almost one-half. In the soil manure causes an increase in the intensity of mineralization processes (increase of the biomass and respiration of several groups of soil organisms) as well as of humification processes (an increase in the production of earthworm coprolites and the abundant development of related bacteria). Intensive application of organic fertilizers was found to lead to simplification of the structure of the plant community and of several animal associations (Lumbricidae, Formicidae, Acarina).

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