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Master Thesis

Étude de l'influence de la gestion piscicole sur les anatidés nicheurs des étangs de Sologne et proposition de mesures de gestion en faveur de leur habitat

Abstract : In a context of fish farming decrease, this study investigated the effect of changes in fish farming management on breeding ducks (used as biodiversity indicators) in fishponds in the Sologne area. The fishponds that haven’t been drained for more than ten years are less propitious to diving ducks reproduction than those drained more often. The drying up (leaving the pond dry during one year), and fertilization are attractive for diving ducks pairs, but aren’t common practices in the Sologne area. Draining influence is related to the fact that fishponds are really long to fill in the Sologne area, creating a sort of drying up. Reed beds are attractive for diving ducks pairs, as macrophytes, which have however a more indirect effect. Macrophytes, considered as second biodiversity indicators, have been investigated, but we couldn’t conclude anything. Finally, no influence of scattering grains annually on diving ducks reproduction has been highlighted in our fishponds sample. Because of owners decreasing interest for fish farming management in favour of hunting activity, the results canlead to these management orientations: draining the ponds at least every three years (not necessarily associated with fish farming) then doing a drying up or at least letting them fill slowly and, if necessary cut the willows. Considering the interest of some owners and managers for their ponds, we think that it’s important to raise their awareness about the results of this study.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-01090502
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Submitted on : Wednesday, December 3, 2014 - 4:16:55 PM
Last modification on : Friday, October 23, 2020 - 4:45:33 PM
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Chloé Boullard. Étude de l'influence de la gestion piscicole sur les anatidés nicheurs des étangs de Sologne et proposition de mesures de gestion en faveur de leur habitat. Sciences agricoles. 2014. ⟨dumas-01090502⟩

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