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The evolution of embryonic creek systems in a recently inundated large open coast managed realignment site

The evolution of embryonic creek systems in a recently inundated large open coast managed realignment site
The evolution of embryonic creek systems in a recently inundated large open coast managed realignment site
Managed realignment (MR) schemes are being implemented to compensate for the degradation of coastal habitats. However, evidence suggests that MR sites have lower biodiversity than anticipated, which has been linked to poor drainage. Despite creek networks playing an important role in enhancing site drainage in natural intertidal environments, there remains a shortage of data on the formation and evolution of creeks within MR sites. This study evaluates creek development at the Medmerry Managed Realignment Site, UK. Creek development is investigated using differential global positioning system (dGPS) data, supported by sedimentological analyses and a high-resolution digital surface model (DSM) derived from images taken using a small unmanned aerial vehicle. Measurements indicated that creeks will develop relatively quickly, but are influenced by differences in the sub-surface sedimentological conditions. A suitable level of agreement was found between the DSM and dGPS measurements, demonstrating the appropriateness of this method to study creek development within intertidal environments at a higher resolution than traditional surveying techniques. These results are used to propose the collapse of sub-surface piping as the primary creek formation mechanism. Findings are discussed in terms of increasing the success of MR schemes and enhancing site design to maximise the ecosystem services provided.
2561-4150
16-33
Dale, Jonathan
f998e92c-cd34-45c2-bc2c-d38ff72b6edc
Burgess, Heidi M.
96772c7e-ab57-463f-8979-b70dd5a360c3
Burnside, Niall G.
15247540-b8c8-4427-88e1-b1901ad92cd7
Kilkie, Paul
3b165ef6-1098-4c65-b3e1-86003a1e009e
Nash, David J.
a364e478-e641-48a9-ad56-93984f811c16
Cundy, Andrew B.
994fdc96-2dce-40f4-b74b-dc638286eb08
Dale, Jonathan
f998e92c-cd34-45c2-bc2c-d38ff72b6edc
Burgess, Heidi M.
96772c7e-ab57-463f-8979-b70dd5a360c3
Burnside, Niall G.
15247540-b8c8-4427-88e1-b1901ad92cd7
Kilkie, Paul
3b165ef6-1098-4c65-b3e1-86003a1e009e
Nash, David J.
a364e478-e641-48a9-ad56-93984f811c16
Cundy, Andrew B.
994fdc96-2dce-40f4-b74b-dc638286eb08

Dale, Jonathan, Burgess, Heidi M., Burnside, Niall G., Kilkie, Paul, Nash, David J. and Cundy, Andrew B. (2018) The evolution of embryonic creek systems in a recently inundated large open coast managed realignment site. Anthropocene Coasts, 1 (1), 16-33. (doi:10.1139/anc-2017-0005).

Record type: Article

Abstract

Managed realignment (MR) schemes are being implemented to compensate for the degradation of coastal habitats. However, evidence suggests that MR sites have lower biodiversity than anticipated, which has been linked to poor drainage. Despite creek networks playing an important role in enhancing site drainage in natural intertidal environments, there remains a shortage of data on the formation and evolution of creeks within MR sites. This study evaluates creek development at the Medmerry Managed Realignment Site, UK. Creek development is investigated using differential global positioning system (dGPS) data, supported by sedimentological analyses and a high-resolution digital surface model (DSM) derived from images taken using a small unmanned aerial vehicle. Measurements indicated that creeks will develop relatively quickly, but are influenced by differences in the sub-surface sedimentological conditions. A suitable level of agreement was found between the DSM and dGPS measurements, demonstrating the appropriateness of this method to study creek development within intertidal environments at a higher resolution than traditional surveying techniques. These results are used to propose the collapse of sub-surface piping as the primary creek formation mechanism. Findings are discussed in terms of increasing the success of MR schemes and enhancing site design to maximise the ecosystem services provided.

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Accepted/In Press date: 28 March 2018
e-pub ahead of print date: 2 May 2018

Identifiers

Local EPrints ID: 422661
URI: http://eprints.soton.ac.uk/id/eprint/422661
ISSN: 2561-4150
PURE UUID: d195b170-5b64-4fb0-ac5b-e71c95804eed
ORCID for Andrew B. Cundy: ORCID iD orcid.org/0000-0003-4368-2569

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Date deposited: 27 Jul 2018 16:30
Last modified: 07 Oct 2020 02:07

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Contributors

Author: Jonathan Dale
Author: Heidi M. Burgess
Author: Niall G. Burnside
Author: Paul Kilkie
Author: David J. Nash
Author: Andrew B. Cundy ORCID iD

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