Exploring molecular and hydroecology of lithifying and non-lithifying microbial mats from hypersaline lakes at Rottnest Island, Western Australia

Juliana Mendes Monteiro

doi:10.26182/5f51a8dc85ab5

Exploring molecular and hydroecology of lithifying and non-lithifying microbial mats from hypersaline lakes at Rottnest Island, Western Australia

Juliana Mendes Monteiro

UWA School of Agriculture and Environment

Research output: Thesis › Doctoral Thesis

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Abstract

Metagenomics was used to: (i) compare taxonomic/functional diversity of lithifying and non-lithifying mats from Rottnest hypersaline lakes, and (ii) observe the mats response to water chemistry seasonal variation. This study has improved our understanding of the environmental limits for microbialites formation and whether distinctions in the microbial mat community and their functional gene composition influence microbialites accretion. Results revealed that both mats harbor taxa and functional genes known to play important roles in microbialite formation but seasonal variation in key metabolic activities occurred only in lithifying mats. Non-lithifying mats are potentially impacted by water salinity decrease caused by external processes.

Original language	English
Qualification	Doctor of Philosophy
Awarding Institution	The University of Western Australia
Supervisors/Advisors	Gleeson, Deirdre, Supervisor Vogwill, Ryan, Supervisor
Thesis sponsors	Australian Government Research Training Program
Award date	7 Aug 2020
DOIs	https://doi.org/10.26182/5f51a8dc85ab5
Publication status	Unpublished - 2020

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THESIS - DOCTOR OF PHILOSOPHY - MENDES MONTEIRO, Juliana - 2020
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title = "Exploring molecular and hydroecology of lithifying and non-lithifying microbial mats from hypersaline lakes at Rottnest Island, Western Australia",

abstract = "Metagenomics was used to: (i) compare taxonomic/functional diversity of lithifying and non-lithifying mats from Rottnest hypersaline lakes, and (ii) observe the mats response to water chemistry seasonal variation. This study has improved our understanding of the environmental limits for microbialites formation and whether distinctions in the microbial mat community and their functional gene composition influence microbialites accretion. Results revealed that both mats harbor taxa and functional genes known to play important roles in microbialite formation but seasonal variation in key metabolic activities occurred only in lithifying mats. Non-lithifying mats are potentially impacted by water salinity decrease caused by external processes.",

keywords = "microbial mats, microbialites, metagenome, lithifying microbial mats, hypersaline lakes, Rottnest Island, hydrology, non-lithifying microbial mats",

author = "{Mendes Monteiro}, Juliana",

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doi = "10.26182/5f51a8dc85ab5",

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school = "The University of Western Australia",

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T1 - Exploring molecular and hydroecology of lithifying and non-lithifying microbial mats from hypersaline lakes at Rottnest Island, Western Australia

AU - Mendes Monteiro, Juliana

PY - 2020

Y1 - 2020

N2 - Metagenomics was used to: (i) compare taxonomic/functional diversity of lithifying and non-lithifying mats from Rottnest hypersaline lakes, and (ii) observe the mats response to water chemistry seasonal variation. This study has improved our understanding of the environmental limits for microbialites formation and whether distinctions in the microbial mat community and their functional gene composition influence microbialites accretion. Results revealed that both mats harbor taxa and functional genes known to play important roles in microbialite formation but seasonal variation in key metabolic activities occurred only in lithifying mats. Non-lithifying mats are potentially impacted by water salinity decrease caused by external processes.

AB - Metagenomics was used to: (i) compare taxonomic/functional diversity of lithifying and non-lithifying mats from Rottnest hypersaline lakes, and (ii) observe the mats response to water chemistry seasonal variation. This study has improved our understanding of the environmental limits for microbialites formation and whether distinctions in the microbial mat community and their functional gene composition influence microbialites accretion. Results revealed that both mats harbor taxa and functional genes known to play important roles in microbialite formation but seasonal variation in key metabolic activities occurred only in lithifying mats. Non-lithifying mats are potentially impacted by water salinity decrease caused by external processes.

KW - microbial mats

KW - microbialites

KW - metagenome

KW - lithifying microbial mats

KW - hypersaline lakes

KW - Rottnest Island

KW - hydrology

KW - non-lithifying microbial mats

U2 - 10.26182/5f51a8dc85ab5

DO - 10.26182/5f51a8dc85ab5

M3 - Doctoral Thesis

ER -

Exploring molecular and hydroecology of lithifying and non-lithifying microbial mats from hypersaline lakes at Rottnest Island, Western Australia

Abstract

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