Soluble iron nutrients in Saharan dust over the central Amazon rainforest

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dc.citation.issue4
dc.citation.volume17
dc.contributor.authorRizzolo, Joana A.
dc.contributor.authorBarbosa, Cybelli G. G.
dc.contributor.authorBorillo, Guilherme C.
dc.contributor.authorGodoi, Ana F. L.
dc.contributor.authorSouza, Rodrigo A. F.
dc.contributor.authorAndreoli, Rita V.
dc.contributor.authorManzi, Antonio O.
dc.contributor.authorSa, Marta O.
dc.contributor.authorAlves, Eliane G.
dc.contributor.authorPoehlker, Christopher
dc.contributor.authorAngelis, Isabella H.
dc.contributor.authorDitas, Florian
dc.contributor.authorSaturno, Jorge
dc.contributor.authorMoran-Zuloaga, Daniel
dc.contributor.authorRizzo, Luciana V. [UNIFESP]
dc.contributor.authorRosario, Nilton E. [UNIFESP]
dc.contributor.authorPauliquevis, Theotonio [UNIFESP]
dc.contributor.authorSantos, Rosa M. N.
dc.contributor.authorYamamoto, Carlos I.
dc.contributor.authorAndreae, Meinrat O.
dc.contributor.authorArtaxo, Paulo
dc.contributor.authorTaylor, Philip E.
dc.contributor.authorGodoi, Ricardo H. M.
dc.coverageGottingen
dc.date.accessioned2020-07-17T14:02:57Z
dc.date.available2020-07-17T14:02:57Z
dc.date.issued2017
dc.description.abstractThe intercontinental transport of aerosols from the Sahara desert plays a significant role in nutrient cycles in the Amazon rainforest, since it carries many types of minerals to these otherwise low-fertility lands. Iron is one of the micronutrients essential for plant growth, and its long-range transport might be an important source for the iron-limited Amazon rainforest. This study assesses the bioavailability of iron Fe(II) and Fe(III) in the particulate matter over the Amazon forest, which was transported from the Sahara desert (for the sake of our discussion, this term also includes the Sahel region). The sampling campaign was carried out above and below the forest canopy at the ATTO site (Amazon Tall Tower Observatory), a near-pristine area in the central Amazon Basin, from March to April 2015. Measurements reached peak concentrations for soluble Fe(III) (48 ng m(-3)), Fe(II) (16 ng m(-3)), Na (470 ng m(-3)), Ca (194 ng m(-3)), K (65 ng m(-3)), and Mg (89 ng m(-3)) during a time period of dust transport from the Sahara, as confirmed by ground-based and satellite remote sensing data and air mass backward trajectories. Dust sampled above the Amazon canopy included primary biological aerosols and other coarse particles up to 12 mu m in diameter. Atmospheric transport of weathered Saharan dust, followed by surface deposition, resulted in substantial iron bioavailability across the rainforest canopy. The seasonal deposition of dust, rich in soluble iron, and other minerals is likely to assist both bacteria and fungi within the topsoil and on canopy surfaces, and especially benefit highly bioabsorbent species. In this scenario, Saharan dust can provide essential macronutrients and micronutrients to plant roots, and also directly to plant leaves. The influence of this input on the ecology of the forest canopy and topsoil is discussed, and we argue that this influence would likely be different from that of nutrients from the weathered Amazon bedrock, which otherwise provides the main source of soluble mineral nutrients.en
dc.description.affiliationUniv Fed Parana, Dept Environm Engn, Curitiba, PR, Brazil
dc.description.affiliationState Univ Amazonas UEA, Dept Meteorol, Manaus, Amazonas, Brazil
dc.description.affiliationInst Nacl de Pesquisas da Amazonia, Programa Grande Escala Biosfera Atmosfera Amazoni, Manaus, Amazonas, Brazil
dc.description.affiliationMax Planck Inst Chem, Biogeochem Dept, Mainz, Germany
dc.description.affiliationUniv Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Diadema, SP, Brazil
dc.description.affiliationUniv Fed Parana, Dept Chem Engn, Curitiba, Parana, Brazil
dc.description.affiliationUniv Sao Paulo, Inst Phys, Sao Paulo, SP, Brazil
dc.description.affiliationDeakin Univ, CCMB, Geelong, Vic, Australia
dc.description.affiliationDeakin Univ, CMMR, Sch Life & Environm Sci, Geelong, Vic, Australia
dc.description.affiliationUnifespUniv Fed Sao Paulo, Inst Ciencias Ambientais Quim & Farmaceut, Diadema, SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipFundacao de Amparo a Pesquisa do Estado do Amazonas (FAPEAM)
dc.description.sponsorshipFinanciadora de Estudos e Projetos (FINEP)
dc.description.sponsorshipCoordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
dc.description.sponsorshipFundacao Araucaria de Apoio ao Desenvolvimento Cientifico e Tecnologico do Parana
dc.description.sponsorshipGerman Federal Ministry of Education and Research (BMBF)|Brazilian Ministerio da Ciencia, Tecnologia e Inovacao (MCTI/FINEP)
dc.description.sponsorshipUEA
dc.description.sponsorshipFAPEAM
dc.description.sponsorshipLBA/INPA
dc.description.sponsorshipSDS/CEUC/RDS-Uatuma
dc.description.sponsorshipIDGerman Federal Ministry of Education and Research (BMBF): 01LB1001A
dc.description.sponsorshipIDMCTI/FINEP: 01.11.01248.00
dc.format.extent2673-2687
dc.identifierhttp://dx.doi.org/10.5194/acp-17-2673-2017
dc.identifier.citationAtmospheric Chemistry And Physics. Gottingen, v. 17, n. 4, p. 2673-2687, 2017.
dc.identifier.doi10.5194/acp-17-2673-2017
dc.identifier.fileWOS000395094400001.pdf
dc.identifier.issn1680-7316
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/55096
dc.identifier.wosWOS:000395094400001
dc.language.isoeng
dc.publisherCopernicus Gesellschaft Mbh
dc.relation.ispartofAtmospheric Chemistry And Physics
dc.rightsinfo:eu-repo/semantics/openAccess
dc.titleSoluble iron nutrients in Saharan dust over the central Amazon rainforesten
dc.typeinfo:eu-repo/semantics/article
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