Universidad Peruana Cayetano Heredia

Hypersaline tidal flats as important "blue carbon" systems: A case study from three ecosystems

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dc.contributor.author Brown, D.R.
dc.contributor.author Marotta, H.
dc.contributor.author Peixoto, R.B.
dc.contributor.author Enrich-Prast, A.
dc.contributor.author Barroso, G.C.
dc.contributor.author Soares, M.L.G.
dc.contributor.author MacHado, W.
dc.contributor.author Perez Segovia, Alexander
dc.contributor.author Smoak, J.M.
dc.contributor.author Sanders, L.M.
dc.contributor.author Conrad, S.
dc.contributor.author Sippo, J.Z.
dc.contributor.author Santos, I.R.
dc.contributor.author Maher, D.T.
dc.contributor.author Sanders, C.J.
dc.date.accessioned 2021-05-18T21:44:15Z
dc.date.available 2021-05-18T21:44:15Z
dc.date.issued 2021
dc.identifier.uri https://hdl.handle.net/20.500.12866/9377
dc.description.abstract Hypersaline tidal flats (HTFs) are coastal ecosystems with freshwater deficits often occurring in arid or semiarid regions near mangrove supratidal zones with no major fluvial contributions. Here, we estimate that organic carbon (OC), total nitrogen (TN) and total phosphorus (TP) were buried at rates averaging 21 (6), 1.7 (0:3) and 1.4 (0:3) gm2 yr1, respectively, during the previous century in three contrasting HTF systems, one in Brazil (eutrophic) and two in Australia (oligotrophic). Although these rates are lower than those from nearby mangrove, saltmarsh and seagrass systems, the importance of HTFs as sinks for OC, TN and TP may be significant given their extensive coverage. Despite the measured short-Term variability between net air saltpan CO2 influx and emission estimates found during the dry and wet season in the Brazilian HTF, the only site with seasonal CO2 flux measurements, the OC sedimentary profiles over several decades suggest efficient OC burial at all sites. Indeed, the stable isotopes of OC and TN (13C and 15N) along with C V N ratios show that microphytobenthos are the major source of the buried OC in these HTFs. Our findings highlight a previously unquantified carbon as well as a nutrient sink and suggest that coastal HTF ecosystems could be included in the emerging blue carbon framework en_US
dc.language.iso eng
dc.publisher Copernicus Publications
dc.relation.ispartofseries Biogeosciences
dc.rights info:eu-repo/semantics/restrictedAccess
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es
dc.subject Hypersaline tidal en_US
dc.subject “blue carbon” systems en_US
dc.subject case study en_US
dc.subject ecosystem en_US
dc.title Hypersaline tidal flats as important "blue carbon" systems: A case study from three ecosystems en_US
dc.type info:eu-repo/semantics/article
dc.identifier.doi https://doi.org/10.5194/bg-18-2527-2021
dc.subject.ocde https://purl.org/pe-repo/ocde/ford#4.01.00
dc.relation.issn 1726-4189


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