Production of 15N-labelled litter for food choice experiments

Julia Seeber (PI), Michael Steinwandter, Alexander Rief


The use of 15N-labelled litter has already proven to be useful in studies dealing with food choices of soil animals. A sideeffect of the labelling process, however, is the increase in foliar nitrogen content, which results in a more palatable food source for the soil invertebrates. To avoid this bias, a method to produce 15N-labelled litter without simultaneously increasing the nitrogen content is therefore urgently needed. Here we will test whether it is possible to obtain 15N-enriched litter from plants grown from previously labelled seeds. Results from this study will help to improve the application of 15N as a tracer in food choice studies.

Funding: Daniel Swarovski Fond


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