Abstract:1. For many elusive insect species, which are difficult to cover by
standard monitoring schemes, innovative monitoring methods are needed to
gain robust data on population trends. We suggest a monitoring of
overwintering larvae for the endangered nymphalid butterfly Limenitis
reducta. 2. We tested one removal and three detection-mark-redetection
(DMR) approaches in a field study in the “Alb-Donau” region, Germany.
We replaced movement of the study organisms by random movement of
multiple different surveyors, a… Show more
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