Flooding responses of riparian eucalypts in the Pilbara region of Western Australia

Rachel Argus

doi:10.26182/5b5ab02ed74bb

Flooding responses of riparian eucalypts in the Pilbara region of Western Australia

Rachel Argus

School of Biological Sciences

Research output: Thesis › Doctoral Thesis

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Abstract

This thesis investigated impacts of prolonged flooding from mine dewatering discharge on two co-occurring riparian eucalypts. Seedlings of Eucalyptus camaldulensis subsp. refulgens tolerated flooding owing to extensive adventitious root development, while E. victrix displayed few adaptive traits and physiological stress. Mature E. camaldulensis and E. victrix trees growing in anoxic sediments of flooded channels also had reduced physiological function as well as -45% reduction in canopy cover. Overall, impacts of flooding from dewatering discharge can be severe, especially for E. victrix, but are also highly localised and unlikely to affect a significant proportion of the overall riparian vegetation.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Grierson, Pauline, Supervisor Colmer, Tim, Supervisor Bleby, Timothy, Supervisor
Award date	9 Jul 2018
DOIs	https://doi.org/10.26182/5b5ab02ed74bb
Publication status	Unpublished - 2018

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10.26182/5b5ab02ed74bb

THESIS - DOCTOR OF PHILOSOPHY - ARGUS Rachel Elizabeth - 2018
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title = "Flooding responses of riparian eucalypts in the Pilbara region of Western Australia",

abstract = "This thesis investigated impacts of prolonged flooding from mine dewatering discharge on two co-occurring riparian eucalypts. Seedlings of Eucalyptus camaldulensis subsp. refulgens tolerated flooding owing to extensive adventitious root development, while E. victrix displayed few adaptive traits and physiological stress. Mature E. camaldulensis and E. victrix trees growing in anoxic sediments of flooded channels also had reduced physiological function as well as -45% reduction in canopy cover. Overall, impacts of flooding from dewatering discharge can be severe, especially for E. victrix, but are also highly localised and unlikely to affect a significant proportion of the overall riparian vegetation. ",

keywords = "riparian vegetation, Foliage cover, mine water management, soil redox, adventitious roots, Stomatal conductance, carbon isotopes, Weeli Wolli Creek",

author = "Rachel Argus",

year = "2018",

doi = "10.26182/5b5ab02ed74bb",

language = "English",

school = "The University of Western Australia",

}

TY - THES

T1 - Flooding responses of riparian eucalypts in the Pilbara region of Western Australia

AU - Argus, Rachel

PY - 2018

Y1 - 2018

N2 - This thesis investigated impacts of prolonged flooding from mine dewatering discharge on two co-occurring riparian eucalypts. Seedlings of Eucalyptus camaldulensis subsp. refulgens tolerated flooding owing to extensive adventitious root development, while E. victrix displayed few adaptive traits and physiological stress. Mature E. camaldulensis and E. victrix trees growing in anoxic sediments of flooded channels also had reduced physiological function as well as -45% reduction in canopy cover. Overall, impacts of flooding from dewatering discharge can be severe, especially for E. victrix, but are also highly localised and unlikely to affect a significant proportion of the overall riparian vegetation.

AB - This thesis investigated impacts of prolonged flooding from mine dewatering discharge on two co-occurring riparian eucalypts. Seedlings of Eucalyptus camaldulensis subsp. refulgens tolerated flooding owing to extensive adventitious root development, while E. victrix displayed few adaptive traits and physiological stress. Mature E. camaldulensis and E. victrix trees growing in anoxic sediments of flooded channels also had reduced physiological function as well as -45% reduction in canopy cover. Overall, impacts of flooding from dewatering discharge can be severe, especially for E. victrix, but are also highly localised and unlikely to affect a significant proportion of the overall riparian vegetation.

KW - riparian vegetation

KW - Foliage cover

KW - mine water management

KW - soil redox

KW - adventitious roots

KW - Stomatal conductance

KW - carbon isotopes

KW - Weeli Wolli Creek

U2 - 10.26182/5b5ab02ed74bb

DO - 10.26182/5b5ab02ed74bb

M3 - Doctoral Thesis

ER -

Flooding responses of riparian eucalypts in the Pilbara region of Western Australia

Abstract

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