Phosphorus availability and microbial driven decomposition in oligotrophic seagrass sediments

    Research output: ThesisDoctoral Thesis

    479 Downloads (Pure)

    Abstract

    Seagrass meadows are highly productive despite occurring in waters with extremely low nutrient concentrations. This thesis investigates how seagrasses obtain phosphorus from organic sources in extreme low nutrient environments, focusing on meadows in the Shark Bay World Heritage Area. Microbial communities and biogeochemistry change significantly as organic matter increases in seagrass sediments. Sediment organic phosphorus increases in sediments as phosphates decrease, and microbial communities are adapted to use this resource in oligotrophic sediments. This microbial breakdown of organic matter can support seagrass productivity in low nutrient ecosystems. This thesis expands our knowledge of biogeochemistry and microbial ecology in seagrass meadows.
    Original languageEnglish
    QualificationDoctor of Philosophy
    Awarding Institution
    • The University of Western Australia
    Award date4 Oct 2016
    Publication statusUnpublished - 2016

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