Eco-hydrology as a driver for tidal restoration: Observations from a Ramsar wetland in eastern Australia.

Land reclamation projects and the installation of drainage infrastructure has impacted coastal wetlands worldwide. By altering water levels and inundation extent, these activities have changed the viable ecosystems onsite and resulted in the proliferation of freshwater species. As more than 50% of t...

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Autores principales:	William Glamore, Duncan Rayner, Jamie Ruprecht, Mahmood Sadat-Noori, Danial Khojasteh
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/14ee893ffa2f440d939c2c168fe1fa2a
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spelling	oai:doaj.org-article:14ee893ffa2f440d939c2c168fe1fa2a2021-12-02T20:15:15ZEco-hydrology as a driver for tidal restoration: Observations from a Ramsar wetland in eastern Australia.1932-620310.1371/journal.pone.0254701https://doaj.org/article/14ee893ffa2f440d939c2c168fe1fa2a2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0254701https://doaj.org/toc/1932-6203Land reclamation projects and the installation of drainage infrastructure has impacted coastal wetlands worldwide. By altering water levels and inundation extent, these activities have changed the viable ecosystems onsite and resulted in the proliferation of freshwater species. As more than 50% of tidal wetlands have been degraded globally over the last 100 years, the importance of this issue is increasingly being recognised and tidal wetland restoration projects are underway worldwide. However, there are currently limited sites where large-scale reintroduction of tidal flushing has been implemented with the explicit aim to foster the growth of a threatened ecosystem. In this study, the tidal restoration of an internationally recognised Ramsar listed wetland in eastern Australia is described to highlight how coastal saltmarsh can be targeted by mimicking inundation depths and hydroperiod across the 410-ha site. Coastal saltmarsh is particularly important to this site as it is part of the east Australasian flyway for migratory birds and the minimum saltmarsh extent, as listed within the Ramsar's limits of acceptable change, have been breached. To recreate coastal saltmarsh habitat onsite, water level and hydroperiod criteria were established based on similar vegetation patterns within the adjacent estuary. A calibrated 2D hydrodynamic model of the site was then used to test how the preferred inundation criteria could be applied to the largest possible restored wetland area. Once optimised, a synthetic tidal signal was implemented onsite via automated hydraulic controls. The onsite vegetation response over an 8-year period was assessed to highlight the ecosystem response to controlled tidal inundation and denoted substantial saltmarsh expansion during the period. The techniques applied onsite have successfully met the restoration targets and can be applied at similar sites worldwide, offsetting sea level rise impacts to natural inundation hydroperiod.William GlamoreDuncan RaynerJamie RuprechtMahmood Sadat-NooriDanial KhojastehPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 8, p e0254701 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q William Glamore Duncan Rayner Jamie Ruprecht Mahmood Sadat-Noori Danial Khojasteh Eco-hydrology as a driver for tidal restoration: Observations from a Ramsar wetland in eastern Australia.
description	Land reclamation projects and the installation of drainage infrastructure has impacted coastal wetlands worldwide. By altering water levels and inundation extent, these activities have changed the viable ecosystems onsite and resulted in the proliferation of freshwater species. As more than 50% of tidal wetlands have been degraded globally over the last 100 years, the importance of this issue is increasingly being recognised and tidal wetland restoration projects are underway worldwide. However, there are currently limited sites where large-scale reintroduction of tidal flushing has been implemented with the explicit aim to foster the growth of a threatened ecosystem. In this study, the tidal restoration of an internationally recognised Ramsar listed wetland in eastern Australia is described to highlight how coastal saltmarsh can be targeted by mimicking inundation depths and hydroperiod across the 410-ha site. Coastal saltmarsh is particularly important to this site as it is part of the east Australasian flyway for migratory birds and the minimum saltmarsh extent, as listed within the Ramsar's limits of acceptable change, have been breached. To recreate coastal saltmarsh habitat onsite, water level and hydroperiod criteria were established based on similar vegetation patterns within the adjacent estuary. A calibrated 2D hydrodynamic model of the site was then used to test how the preferred inundation criteria could be applied to the largest possible restored wetland area. Once optimised, a synthetic tidal signal was implemented onsite via automated hydraulic controls. The onsite vegetation response over an 8-year period was assessed to highlight the ecosystem response to controlled tidal inundation and denoted substantial saltmarsh expansion during the period. The techniques applied onsite have successfully met the restoration targets and can be applied at similar sites worldwide, offsetting sea level rise impacts to natural inundation hydroperiod.
format	article
author	William Glamore Duncan Rayner Jamie Ruprecht Mahmood Sadat-Noori Danial Khojasteh
author_facet	William Glamore Duncan Rayner Jamie Ruprecht Mahmood Sadat-Noori Danial Khojasteh
author_sort	William Glamore
title	Eco-hydrology as a driver for tidal restoration: Observations from a Ramsar wetland in eastern Australia.
title_short	Eco-hydrology as a driver for tidal restoration: Observations from a Ramsar wetland in eastern Australia.
title_full	Eco-hydrology as a driver for tidal restoration: Observations from a Ramsar wetland in eastern Australia.
title_fullStr	Eco-hydrology as a driver for tidal restoration: Observations from a Ramsar wetland in eastern Australia.
title_full_unstemmed	Eco-hydrology as a driver for tidal restoration: Observations from a Ramsar wetland in eastern Australia.
title_sort	eco-hydrology as a driver for tidal restoration: observations from a ramsar wetland in eastern australia.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/14ee893ffa2f440d939c2c168fe1fa2a
work_keys_str_mv	AT williamglamore ecohydrologyasadriverfortidalrestorationobservationsfromaramsarwetlandineasternaustralia AT duncanrayner ecohydrologyasadriverfortidalrestorationobservationsfromaramsarwetlandineasternaustralia AT jamieruprecht ecohydrologyasadriverfortidalrestorationobservationsfromaramsarwetlandineasternaustralia AT mahmoodsadatnoori ecohydrologyasadriverfortidalrestorationobservationsfromaramsarwetlandineasternaustralia AT danialkhojasteh ecohydrologyasadriverfortidalrestorationobservationsfromaramsarwetlandineasternaustralia
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Eco-hydrology as a driver for tidal restoration: Observations from a Ramsar wetland in eastern Australia.

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