Tidal marsh restoration enhances sediment accretion and carbon accumulation in the Stillaguamish River estuary, Washington.

Tidal marshes have been recognized globally for their ability to sequester "blue carbon" but there is still a need for studies investigating the marsh response to restoration, particularly in the Pacific Northwest United States. Here we report carbon stocks and accumulation rates for resto...

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Autores principales:	Katrina L Poppe, John M Rybczyk
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a58c23d66021425caf1b50f12560cbbc
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spelling	oai:doaj.org-article:a58c23d66021425caf1b50f12560cbbc2021-12-02T20:14:41ZTidal marsh restoration enhances sediment accretion and carbon accumulation in the Stillaguamish River estuary, Washington.1932-620310.1371/journal.pone.0257244https://doaj.org/article/a58c23d66021425caf1b50f12560cbbc2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0257244https://doaj.org/toc/1932-6203Tidal marshes have been recognized globally for their ability to sequester "blue carbon" but there is still a need for studies investigating the marsh response to restoration, particularly in the Pacific Northwest United States. Here we report carbon stocks and accumulation rates for restored and natural tidal marshes in the Stillaguamish River estuary in Puget Sound, Washington, where a 60-hectare marsh was reintroduced to the tidal regime from its previous use as diked and drained farmland. We found that the restoration not only maximized carbon accumulation but also enhanced resilience to rising sea levels. Four years after restoration, mean sediment carbon stocks in the upper 30 cm within the restored marsh (4.43 kg C m-2) were slightly lower than those measured in the adjacent natural marshes (5.95 kg C m-2). Mean carbon accumulation rates, however, were nearly twice as high in the restored marsh (230.49 g C m-2 yr-1) compared to the natural marshes (123.00 g C m-2 yr-1) due to high rates of accretion in the restored marsh (1.57 cm yr-1). Mean elevation change rates were nearly twice that of corresponding 210Pb accretion rates, but all were greater than the current rate of sea level rise.Katrina L PoppeJohn M RybczykPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 9, p e0257244 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Katrina L Poppe John M Rybczyk Tidal marsh restoration enhances sediment accretion and carbon accumulation in the Stillaguamish River estuary, Washington.
description	Tidal marshes have been recognized globally for their ability to sequester "blue carbon" but there is still a need for studies investigating the marsh response to restoration, particularly in the Pacific Northwest United States. Here we report carbon stocks and accumulation rates for restored and natural tidal marshes in the Stillaguamish River estuary in Puget Sound, Washington, where a 60-hectare marsh was reintroduced to the tidal regime from its previous use as diked and drained farmland. We found that the restoration not only maximized carbon accumulation but also enhanced resilience to rising sea levels. Four years after restoration, mean sediment carbon stocks in the upper 30 cm within the restored marsh (4.43 kg C m-2) were slightly lower than those measured in the adjacent natural marshes (5.95 kg C m-2). Mean carbon accumulation rates, however, were nearly twice as high in the restored marsh (230.49 g C m-2 yr-1) compared to the natural marshes (123.00 g C m-2 yr-1) due to high rates of accretion in the restored marsh (1.57 cm yr-1). Mean elevation change rates were nearly twice that of corresponding 210Pb accretion rates, but all were greater than the current rate of sea level rise.
format	article
author	Katrina L Poppe John M Rybczyk
author_facet	Katrina L Poppe John M Rybczyk
author_sort	Katrina L Poppe
title	Tidal marsh restoration enhances sediment accretion and carbon accumulation in the Stillaguamish River estuary, Washington.
title_short	Tidal marsh restoration enhances sediment accretion and carbon accumulation in the Stillaguamish River estuary, Washington.
title_full	Tidal marsh restoration enhances sediment accretion and carbon accumulation in the Stillaguamish River estuary, Washington.
title_fullStr	Tidal marsh restoration enhances sediment accretion and carbon accumulation in the Stillaguamish River estuary, Washington.
title_full_unstemmed	Tidal marsh restoration enhances sediment accretion and carbon accumulation in the Stillaguamish River estuary, Washington.
title_sort	tidal marsh restoration enhances sediment accretion and carbon accumulation in the stillaguamish river estuary, washington.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/a58c23d66021425caf1b50f12560cbbc
work_keys_str_mv	AT katrinalpoppe tidalmarshrestorationenhancessedimentaccretionandcarbonaccumulationinthestillaguamishriverestuarywashington AT johnmrybczyk tidalmarshrestorationenhancessedimentaccretionandcarbonaccumulationinthestillaguamishriverestuarywashington
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Tidal marsh restoration enhances sediment accretion and carbon accumulation in the Stillaguamish River estuary, Washington.

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