Mark the location of webs or caterpillars before mowing
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Overall effectiveness category Awaiting assessment
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Number of studies: 1
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How is the evidence assessed?
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Effectiveness
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Supporting evidence from individual studies
A replicated, before-and-after study in 2015–2016 in four wet meadows in Świętokrzyskie Voivodeship, Poland (Błoński 2016) reported that after marsh fritillary Euphydryas aurinia caterpillar webs were marked prior to mowing, the number of webs increased the following year. Results were not tested for statistical significance. One year after marsh fritillary caterpillar webs were marked prior to mowing there were 17–46 webs/site, compared to 10–20 webs/site the previous year. In 2015, marsh fritillary caterpillar webs in four meadows were marked with flags so that they could be avoided during mowing (at one site trees and shrubs were also removed to restore habitat). In August 2015–2016, marsh fritillary caterpillar webs were surveyed at each site.
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Where has this evidence come from?
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This Action forms part of the Action Synopsis:
Butterfly and Moth ConservationButterfly and Moth Conservation - Published 2023
Butterfly and Moth Synopsis