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Master Thesis

Influences des facteurs paysagers et de la gestion de la trame herbacée sur les populations de rhopalocères

Abstract : Scientists face a urging necessity to have reliable indicators to evaluate the conservation state of biological diversity, and thus be able to work efficiently with urban and natural landscape planners. In this context, choosing target species allowing to assess the habitats quality has proven to be a satisfactory method. Still, the relative influence of landscape factors versus the direct management of the greens remains uneasy to estimate. Here we show that Rhopalocera seem to be particularly sensitive to mowing frequency and area of the gardens: those two factors affect specific richness and number of individuals. We also have been able to demonstrate that the urban density around the sites plays a determining role upon the composition of the butterflies' population; the less mobile species are especially sensitive to the anthropic pressure, both via landscape and management. Study of Rhopalocera turned out to be extremely promising in terms of indication of environment preservation, even in strongly constraint places as densely urbanized ones.
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Master Thesis
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Submitted on : Monday, April 14, 2014 - 2:08:49 PM
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  • HAL Id : dumas-00912382, version 1

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Lise Camus-Ginger. Influences des facteurs paysagers et de la gestion de la trame herbacée sur les populations de rhopalocères. Sciences agricoles. 2013. ⟨dumas-00912382⟩

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