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Quantifying Salt Marsh Resilience to Anthropogenic Disturbance and Climate Change : = An Integrated Field and Numerical Investigation.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Quantifying Salt Marsh Resilience to Anthropogenic Disturbance and Climate Change :/
Reminder of title:	An Integrated Field and Numerical Investigation.
Author:	Pannozzo, Natascia.
Description:	1 online resource (269 pages)
Notes:	Source: Dissertations Abstracts International, Volume: 85-06, Section: B.
Contained By:	Dissertations Abstracts International85-06B.
Subject:	Vegetation. -
Online resource:	click for full text (PQDT)
ISBN:	9798381021226

Quantifying Salt Marsh Resilience to Anthropogenic Disturbance and Climate Change : = An Integrated Field and Numerical Investigation.
Pannozzo, Natascia.

Quantifying Salt Marsh Resilience to Anthropogenic Disturbance and Climate Change :An Integrated Field and Numerical Investigation. - 1 online resource (269 pages)

Source: Dissertations Abstracts International, Volume: 85-06, Section: B.

Thesis (Ph.D.)--The University of Liverpool (United Kingdom), 2023.

Includes bibliographical references

Salt marshes are significant ecosystems whose survival largely depends upon the equilibrium between sea-level variations and sediment availability. With changing climate and increasing human disturbance influencing sediment transport within intertidal systems, it is unclear whether salt marshes will be able to retain their resilience. This study aims to i) investigate salt marsh resilience to embankment construction and changes in sea-level and storm activity and ii) develop a new luminescence-based approach, which is independent of stratigraphy and sediment composition, for the detection of storm activity across intertidal environments. The Ribble Estuary, North-West England, was used as a test case and the response of the system to embankment construction, sea-level rise and storm activity was investigated using an integration of numerical modelling and field analyses (paleoenvironmental reconstruction and monitoring). Results showed that the construction of embankments along an estuary shoreline can promote ebb dominance in the intertidal system and intensify sediment export, threatening marsh accretion, although this is negligible in a system characterised by high rates of marine sediment supply. Sea-level rise can also threaten estuary and marsh stability by promoting ebb dominance and triggering sediment export, but an increase in storm intensity has the potential to counteract the decrease in sediment budget caused by sea-level rise by promoting flood dominance and triggering sediment import. However, while storms enhance salt marsh vertical accretion, especially benefitting the marsh interior, the majority of the storm sediment supplied to the salt marsh platform are generated by an increase in erosion and resuspension of mudflat and tidal creek sediments, with implications for marsh lateral retreat. Results also demonstrated that luminescence signals of K-feldspar can diagnose differential modes of deposition across intertidal settings and can, therefore, successfully detect storm activity across intertidal environments. Overall, this study offers new perspectives and tools that can benefit both coastal research development and coastal management.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2024

Mode of access: World Wide Web

ISBN: 9798381021226Subjects--Topical Terms:

1465456
Vegetation.
Index Terms--Genre/Form:

554714
Electronic books.

Quantifying Salt Marsh Resilience to Anthropogenic Disturbance and Climate Change : = An Integrated Field and Numerical Investigation.
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502 $a Thesis (Ph.D.)--The University of Liverpool (United Kingdom), 2023.
504 $a Includes bibliographical references
520 $a Salt marshes are significant ecosystems whose survival largely depends upon the equilibrium between sea-level variations and sediment availability. With changing climate and increasing human disturbance influencing sediment transport within intertidal systems, it is unclear whether salt marshes will be able to retain their resilience. This study aims to i) investigate salt marsh resilience to embankment construction and changes in sea-level and storm activity and ii) develop a new luminescence-based approach, which is independent of stratigraphy and sediment composition, for the detection of storm activity across intertidal environments. The Ribble Estuary, North-West England, was used as a test case and the response of the system to embankment construction, sea-level rise and storm activity was investigated using an integration of numerical modelling and field analyses (paleoenvironmental reconstruction and monitoring). Results showed that the construction of embankments along an estuary shoreline can promote ebb dominance in the intertidal system and intensify sediment export, threatening marsh accretion, although this is negligible in a system characterised by high rates of marine sediment supply. Sea-level rise can also threaten estuary and marsh stability by promoting ebb dominance and triggering sediment export, but an increase in storm intensity has the potential to counteract the decrease in sediment budget caused by sea-level rise by promoting flood dominance and triggering sediment import. However, while storms enhance salt marsh vertical accretion, especially benefitting the marsh interior, the majority of the storm sediment supplied to the salt marsh platform are generated by an increase in erosion and resuspension of mudflat and tidal creek sediments, with implications for marsh lateral retreat. Results also demonstrated that luminescence signals of K-feldspar can diagnose differential modes of deposition across intertidal settings and can, therefore, successfully detect storm activity across intertidal environments. Overall, this study offers new perspectives and tools that can benefit both coastal research development and coastal management.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2024
538 $a Mode of access: World Wide Web
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650 4 $a Soil erosion. $3 682803
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650 4 $a Asymmetry. $3 1437814
650 4 $a Wetlands. $3 785593
650 4 $a Aquatic sciences. $3 1178821
650 4 $a Ecology. $3 575279
650 4 $a Fluid mechanics. $3 555551
650 4 $a Mechanics. $3 527684
650 4 $a Physical oceanography. $3 1178843
650 4 $a Soil sciences. $3 1179645
650 4 $a Water resources management. $3 1178858
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710 2 $a The University of Liverpool (United Kingdom). $3 1335391
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