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Theses

Relation " communauté-ressource " : cas des communautés marines d'invertébrés benthiques qui exploitent les débris grossiers dérivés de plantes terrestres

Abstract : Either adrift or submerged, coarse debris derived from terrestrial plants provide energy and nutrients for marine ecosystems. By considering this allochtonous organic material, the goals of my PhD were to describe the assembly process of macrobenthic communities around food sources and to consider the feedback effect of the observed communities on the geochemical fate of the resource. To do so, I combined in situ experiments and modelling with the intention to build a consistent, quantitative description of the ecogeochemical link between biodiversity and ecosystem functioning. Using leaf litter and dead wood, this approach allowed: (i) to show the importance of biotic interactions from the beginning of the community assembly process, (ii) to make the explicit connection between the resource consumption and the population dynamics of the consumers, and (iii) and to test how resource processing is affected by the specific diversity of the communities.
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Submitted on : Thursday, September 21, 2017 - 9:25:07 AM
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  • HAL Id : tel-01591198, version 1

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Sandrine Fanfard. Relation " communauté-ressource " : cas des communautés marines d'invertébrés benthiques qui exploitent les débris grossiers dérivés de plantes terrestres. Ecologie, Environnement. Université Pierre et Marie Curie - Paris VI, 2016. Français. ⟨NNT : 2016PA066678⟩. ⟨tel-01591198⟩

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