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Master Thesis

Implantation de mélanges floraux en bord de champ : activité-densité des communautés de syrphes et étude de l'accessibilité du nectar des espèces florales semées

Abstract : Eight mixes composed with different plant species have been sowed in Autumn 2013. Net-like traps allowed to follow flying arthropods activity and more specifically hoverflies. In 2017, mixes invaded by grass species had fewer individuals in the traps than mixes where nectar-producing species had maintained (H. spondylium, A.millefolium). A new method to study nectar accessibility is presented, inspired by Van Rijn and Wäckers (2016), Flower morphology affects their nectar accessibility and hoverflies species cannot access the same flowers, depending on their head and proboscis dimensions. One of the hypothesis was that the surface occupied by accessible nectar-producing species affects hoverflies communities. This question stays partially unanswered but all the data are available for further analysis. Data on flowers sizes of 51 species are available as a first step to understand the visual attractiveness of flower mixes.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-01874546
Contributor : Agrocampus Ouest <>
Submitted on : Friday, September 14, 2018 - 2:00:16 PM
Last modification on : Monday, July 6, 2020 - 3:38:22 PM
Long-term archiving on: : Saturday, December 15, 2018 - 3:25:26 PM

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Claire Zucchetta. Implantation de mélanges floraux en bord de champ : activité-densité des communautés de syrphes et étude de l'accessibilité du nectar des espèces florales semées. Sciences du Vivant [q-bio]. 2018. ⟨dumas-01874546⟩

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