Phosphorus availability and microbial driven decomposition in oligotrophic seagrass sediments

Matthew Fraser

Phosphorus availability and microbial driven decomposition in oligotrophic seagrass sediments

Research output: Thesis › Doctoral Thesis

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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 language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Kendrick, Gary, Supervisor Grierson, Pauline, Supervisor Skrzypek, Greg, Supervisor
Award date	4 Oct 2016
Publication status	Unpublished - 2016

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THESIS - DOCTOR OF PHILOSOPHY - FRASER Matthew William - 2016
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title = "Phosphorus availability and microbial driven decomposition in oligotrophic seagrass sediments",

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.",

keywords = "Seagrass, Phosphorus, Organic matter, Shark Bay, Ecology, Biogeochemistry, Microorganisms, Oligotrophic",

author = "Matthew Fraser",

year = "2016",

language = "English",

school = "The University of Western Australia",

}

TY - THES

T1 - Phosphorus availability and microbial driven decomposition in oligotrophic seagrass sediments

AU - Fraser, Matthew

PY - 2016

Y1 - 2016

N2 - 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.

AB - 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.

KW - Seagrass

KW - Phosphorus

KW - Organic matter

KW - Shark Bay

KW - Ecology

KW - Biogeochemistry

KW - Microorganisms

KW - Oligotrophic

M3 - Doctoral Thesis

ER -

Phosphorus availability and microbial driven decomposition in oligotrophic seagrass sediments

Abstract

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