Impacts of wildfire on soil organic matter of forests of southwest Australia

Andrea Bravo Escobar

doi:10.26182/qjd5-4h48

Impacts of wildfire on soil organic matter of forests of southwest Australia

Andrea Bravo Escobar

School of Biological Sciences

Research output: Thesis › Doctoral Thesis

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Abstract

This thesis used fluorescence spectroscopy, 1H-NMR and nutrient analyses to investigate fire-related changes in dissolved organic matter (DOM) in forest soils of southwest Australia. Changes in DOM composition of eucalypt forest and pine plantations immediately after fire are more strongly affected by feedbacks between forest type and fire severity than forest type alone. Legacy effects of fire intensity on the composition of DOM is more evident in karri forest burnt at high severity compared to jarrah forest. These findings are crucial to predict how carbon and nutrient cycling in forests may respond to future fire disturbances.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Grierson, Pauline, Supervisor Nealon, Gareth, Supervisor O'Donnell, Alison, Supervisor
Award date	14 Nov 2023
DOIs	https://doi.org/10.26182/qjd5-4h48
Publication status	Unpublished - 2023

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10.26182/qjd5-4h48

THESIS - DOCTOR OF PHILOSOPHY - BRAVO ESCOBAR Andrea Victoria - 2023
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Cite this

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title = "Impacts of wildfire on soil organic matter of forests of southwest Australia",

abstract = "This thesis used fluorescence spectroscopy, 1H-NMR and nutrient analyses to investigate fire-related changes in dissolved organic matter (DOM) in forest soils of southwest Australia. Changes in DOM composition of eucalypt forest and pine plantations immediately after fire are more strongly affected by feedbacks between forest type and fire severity than forest type alone. Legacy effects of fire intensity on the composition of DOM is more evident in karri forest burnt at high severity compared to jarrah forest. These findings are crucial to predict how carbon and nutrient cycling in forests may respond to future fire disturbances.",

keywords = "Dissolved organic matter, Soil organic matter, Fire, Eucalyptus, Carbon, Soil texture, 1H-NMR",

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AB - This thesis used fluorescence spectroscopy, 1H-NMR and nutrient analyses to investigate fire-related changes in dissolved organic matter (DOM) in forest soils of southwest Australia. Changes in DOM composition of eucalypt forest and pine plantations immediately after fire are more strongly affected by feedbacks between forest type and fire severity than forest type alone. Legacy effects of fire intensity on the composition of DOM is more evident in karri forest burnt at high severity compared to jarrah forest. These findings are crucial to predict how carbon and nutrient cycling in forests may respond to future fire disturbances.

KW - Dissolved organic matter

KW - Soil organic matter

KW - Fire

KW - Eucalyptus

KW - Carbon

KW - Soil texture

KW - 1H-NMR

U2 - 10.26182/qjd5-4h48

DO - 10.26182/qjd5-4h48

M3 - Doctoral Thesis

ER -

Impacts of wildfire on soil organic matter of forests of southwest Australia

Abstract

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