期刊
CONTEMPORARY PROBLEMS OF ECOLOGY
卷 9, 期 4, 页码 396-406出版社
MAIK NAUKA/INTERPERIODICA/SPRINGER
DOI: 10.1134/S1995425516040077
关键词
macrofauna; mesofauna; stable isotopes; delta C-13; delta N-15; lateral transfer; Oka Reserve
类别
资金
- Russian Foundation for Basic Research [14-0401824]
- Program of the Presidium of the Russian Academy of Sciences
Routes of aquatic allochthonous inputs (aquatic subsidies) to detrital food webs are studied, as is the effect of aquatic subsidies on the functional and taxonomic structure of soil invertebrate communities in coastal ecosystems. The study took place in the coastal zone of an oxbow lake of the Pra River in the Oka Reserve. The results indicate a strong dependence of soil animals in the coastal habitats on aquatic subsidies. Isotopic analysis shows that aquatic resources enter soil food webs not only via predators feeding on flying insects or aquatic prey, but also via saprophages decomposing organic debris of aquatic origin. The contribution of aquatic subsidies to the energy balance of soil invertebrates decreases rapidly with increasing distance from the lake. The fraction of aquatic carbon in tissues of collembolans and saprophages is negligible already a few meters from the water edge. The dependence of predatory invertebrates on aquatic resources can be traced at somewhat greater distance (tens of meters).
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