Carbon and alkalinity outwelling across the groundwater‐creek‐shelf continuum off Amazonian mangroves

Abstract Lateral fluxes (i.e., outwelling) of dissolved organic (DOC) and inorganic (DIC) carbon and total alkalinity were estimated using radium isotopes at the groundwater, mangrove creek, and continental shelf scales in the Amazon region. Observations of salinity and radium isotopes in the creek...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Alex Cabral, Thorsten Dittmar, Mitchell Call, Jan Scholten, Carlos E. deRezende, Nils Asp, Martha Gledhill, Michael Seidel, Isaac R. Santos
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Oceanography GC1-1581
Acceso en línea:	https://doaj.org/article/2d078bf5027e4641932687e26b05ce28
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:2d078bf5027e4641932687e26b05ce28
record_format	dspace
spelling	oai:doaj.org-article:2d078bf5027e4641932687e26b05ce282021-11-08T07:38:24ZCarbon and alkalinity outwelling across the groundwater‐creek‐shelf continuum off Amazonian mangroves2378-224210.1002/lol2.10210https://doaj.org/article/2d078bf5027e4641932687e26b05ce282021-12-01T00:00:00Zhttps://doi.org/10.1002/lol2.10210https://doaj.org/toc/2378-2242Abstract Lateral fluxes (i.e., outwelling) of dissolved organic (DOC) and inorganic (DIC) carbon and total alkalinity were estimated using radium isotopes at the groundwater, mangrove creek, and continental shelf scales in the Amazon region. Observations of salinity and radium isotopes in the creek indicated tidally driven groundwater exchange as the main source of carbon. Radium‐derived transport rates indicate that mangrove carbon is exported out of the continental shelf on timescales of 22 ± 7 d. Bicarbonate was the main form (82% ± 11%) of total dissolved carbon in all samples, followed by DOC (13% ± 12%) and CO2 (5% ± 4%). DIC (18.7 ± 15.7 mmol m−2 d−1) exceeded DOC (3.0 ± 4.1 mmol m−2 d−1) outwelling at all spatial scales. The interpretation of outwelling across the mangrove‐ocean continuum is related to the spatial and temporal scales investigated. At all scales, outwelling represented a major coastal carbon pathway driving bicarbonate storage in the ocean.Alex CabralThorsten DittmarMitchell CallJan ScholtenCarlos E. deRezendeNils AspMartha GledhillMichael SeidelIsaac R. SantosWileyarticleOceanographyGC1-1581ENLimnology and Oceanography Letters, Vol 6, Iss 6, Pp 369-378 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Oceanography GC1-1581
spellingShingle	Oceanography GC1-1581 Alex Cabral Thorsten Dittmar Mitchell Call Jan Scholten Carlos E. deRezende Nils Asp Martha Gledhill Michael Seidel Isaac R. Santos Carbon and alkalinity outwelling across the groundwater‐creek‐shelf continuum off Amazonian mangroves
description	Abstract Lateral fluxes (i.e., outwelling) of dissolved organic (DOC) and inorganic (DIC) carbon and total alkalinity were estimated using radium isotopes at the groundwater, mangrove creek, and continental shelf scales in the Amazon region. Observations of salinity and radium isotopes in the creek indicated tidally driven groundwater exchange as the main source of carbon. Radium‐derived transport rates indicate that mangrove carbon is exported out of the continental shelf on timescales of 22 ± 7 d. Bicarbonate was the main form (82% ± 11%) of total dissolved carbon in all samples, followed by DOC (13% ± 12%) and CO2 (5% ± 4%). DIC (18.7 ± 15.7 mmol m−2 d−1) exceeded DOC (3.0 ± 4.1 mmol m−2 d−1) outwelling at all spatial scales. The interpretation of outwelling across the mangrove‐ocean continuum is related to the spatial and temporal scales investigated. At all scales, outwelling represented a major coastal carbon pathway driving bicarbonate storage in the ocean.
format	article
author	Alex Cabral Thorsten Dittmar Mitchell Call Jan Scholten Carlos E. deRezende Nils Asp Martha Gledhill Michael Seidel Isaac R. Santos
author_facet	Alex Cabral Thorsten Dittmar Mitchell Call Jan Scholten Carlos E. deRezende Nils Asp Martha Gledhill Michael Seidel Isaac R. Santos
author_sort	Alex Cabral
title	Carbon and alkalinity outwelling across the groundwater‐creek‐shelf continuum off Amazonian mangroves
title_short	Carbon and alkalinity outwelling across the groundwater‐creek‐shelf continuum off Amazonian mangroves
title_full	Carbon and alkalinity outwelling across the groundwater‐creek‐shelf continuum off Amazonian mangroves
title_fullStr	Carbon and alkalinity outwelling across the groundwater‐creek‐shelf continuum off Amazonian mangroves
title_full_unstemmed	Carbon and alkalinity outwelling across the groundwater‐creek‐shelf continuum off Amazonian mangroves
title_sort	carbon and alkalinity outwelling across the groundwater‐creek‐shelf continuum off amazonian mangroves
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/2d078bf5027e4641932687e26b05ce28
work_keys_str_mv	AT alexcabral carbonandalkalinityoutwellingacrossthegroundwatercreekshelfcontinuumoffamazonianmangroves AT thorstendittmar carbonandalkalinityoutwellingacrossthegroundwatercreekshelfcontinuumoffamazonianmangroves AT mitchellcall carbonandalkalinityoutwellingacrossthegroundwatercreekshelfcontinuumoffamazonianmangroves AT janscholten carbonandalkalinityoutwellingacrossthegroundwatercreekshelfcontinuumoffamazonianmangroves AT carlosederezende carbonandalkalinityoutwellingacrossthegroundwatercreekshelfcontinuumoffamazonianmangroves AT nilsasp carbonandalkalinityoutwellingacrossthegroundwatercreekshelfcontinuumoffamazonianmangroves AT marthagledhill carbonandalkalinityoutwellingacrossthegroundwatercreekshelfcontinuumoffamazonianmangroves AT michaelseidel carbonandalkalinityoutwellingacrossthegroundwatercreekshelfcontinuumoffamazonianmangroves AT isaacrsantos carbonandalkalinityoutwellingacrossthegroundwatercreekshelfcontinuumoffamazonianmangroves
_version_	1718442889971761152

Carbon and alkalinity outwelling across the groundwater‐creek‐shelf continuum off Amazonian mangroves

Ejemplares similares