Living on the edge: microbes and carbon cycling in mangrove soils along the west coast of Australia

Tegan Kierre Davies

Research output: ThesisDoctoral Thesis

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Abstract

Microbial mineralisation of organic matter in mangrove soils plays a key role In maintaining ecosystem productivity and carbon storage. This thesis revealed that microbial activity and community structures in Avicennia marina soils along the arid west Australian coast were strongly influenced by differences in nitrogen and phosphorus supply, complexity of organic carbon, and salinity. Dissolved inorganic carbon production in soils was also strongly influenced by microbial metabolism of mangrove roots or root exudates. My findings demonstrate that different environmental factors may be more or less important in driving microbial dynamics in oligotrophic mangrove soils depending on the scales considered.
Original languageEnglish
QualificationDoctor of Philosophy
Awarding Institution
  • The University of Western Australia
Supervisors/Advisors
  • Grierson, Pauline, Supervisor
  • Pettit, Neil, Supervisor
  • Lovelock, Catherine E., Supervisor, External person
  • Gleeson, Deirdre, Supervisor
Award date25 Feb 2018
DOIs
Publication statusUnpublished - 2018

Fingerprint

mangrove
coast
carbon
soil
dissolved inorganic carbon
marina
carbon sequestration
microbial activity
microbial community
community structure
environmental factor
metabolism
organic carbon
mineralization
phosphorus
salinity
organic matter
productivity
ecosystem
nitrogen

Cite this

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title = "Living on the edge: microbes and carbon cycling in mangrove soils along the west coast of Australia",
abstract = "Microbial mineralisation of organic matter in mangrove soils plays a key role In maintaining ecosystem productivity and carbon storage. This thesis revealed that microbial activity and community structures in Avicennia marina soils along the arid west Australian coast were strongly influenced by differences in nitrogen and phosphorus supply, complexity of organic carbon, and salinity. Dissolved inorganic carbon production in soils was also strongly influenced by microbial metabolism of mangrove roots or root exudates. My findings demonstrate that different environmental factors may be more or less important in driving microbial dynamics in oligotrophic mangrove soils depending on the scales considered.",
keywords = "Mangroves, Nitrogen, West Australia, Arid, Carbon, Microorganisms",
author = "Davies, {Tegan Kierre}",
year = "2018",
doi = "10.4225/23/5ac6f4fabb850",
language = "English",
school = "The University of Western Australia",

}

Living on the edge : microbes and carbon cycling in mangrove soils along the west coast of Australia. / Davies, Tegan Kierre.

2018.

Research output: ThesisDoctoral Thesis

TY - THES

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T2 - microbes and carbon cycling in mangrove soils along the west coast of Australia

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PY - 2018

Y1 - 2018

N2 - Microbial mineralisation of organic matter in mangrove soils plays a key role In maintaining ecosystem productivity and carbon storage. This thesis revealed that microbial activity and community structures in Avicennia marina soils along the arid west Australian coast were strongly influenced by differences in nitrogen and phosphorus supply, complexity of organic carbon, and salinity. Dissolved inorganic carbon production in soils was also strongly influenced by microbial metabolism of mangrove roots or root exudates. My findings demonstrate that different environmental factors may be more or less important in driving microbial dynamics in oligotrophic mangrove soils depending on the scales considered.

AB - Microbial mineralisation of organic matter in mangrove soils plays a key role In maintaining ecosystem productivity and carbon storage. This thesis revealed that microbial activity and community structures in Avicennia marina soils along the arid west Australian coast were strongly influenced by differences in nitrogen and phosphorus supply, complexity of organic carbon, and salinity. Dissolved inorganic carbon production in soils was also strongly influenced by microbial metabolism of mangrove roots or root exudates. My findings demonstrate that different environmental factors may be more or less important in driving microbial dynamics in oligotrophic mangrove soils depending on the scales considered.

KW - Mangroves

KW - Nitrogen

KW - West Australia

KW - Arid

KW - Carbon

KW - Microorganisms

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DO - 10.4225/23/5ac6f4fabb850

M3 - Doctoral Thesis

ER -