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Master Thesis

Augmentation de la biodiversité cultivée et interactions avec la production agricole, la régulation biologique des bioagresseurs et la biodiversité associée

Abstract : Intensive agriculture is more and more criticized due to its negative impacts on the environment, like biodiversity loss. That’s why agroecological practices based on the increase of the planned diversity are developed. Here, we hypothesised that this increase of the planned diversity could increase the supply of ecosystem services and partly reduce effects of inputs use. The aim of the study is to observed relationships between production of good and ecosystem services of weed regulation and maintaining of associated diversity. Then we identified and described the rotations that have the best synergies between services, on 33 successions from 4 experiments. First, we created indicator to describe the successions then I performed correlations analysis on the variables and performances profiles and Pareto fronts. Finally, the most interesting successions were described with the indicators. So, we observed a negative correlation between production and weeds species richness, which is characterized by an opposition between planned diversity and the use of inputs. However, we highlighted successions which increased weed species richness without decreasing production or weeds regulation. These successions are characterised by a small decrease of inputs use and a small increase of planned diversity. It seems that we must consider in the same time planned biodiversity and input use to create new cropping systems.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-01699345
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Submitted on : Friday, February 2, 2018 - 11:36:38 AM
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Séverin Yvoz. Augmentation de la biodiversité cultivée et interactions avec la production agricole, la régulation biologique des bioagresseurs et la biodiversité associée. Sciences du Vivant [q-bio]. 2017. ⟨dumas-01699345⟩

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