Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Dissolved iron (II) in the Baltic Sea surface water and implications for cyanobacterial bloom development
Department of Chemistry, University of Otago, Dunedin.
Department of Systems Ecology, Stockholm University.
Department of Chemistry, University of Otago, Dunedin.
Visa övriga samt affilieringar
2009 (Engelska)Ingår i: Biogeosciences, ISSN 1726-4170, E-ISSN 1726-4189, Vol. 6, nr Special issue, s. 2397-2420Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Iron chemistry measurements were conducted during summer 2007 at two distinct locations in the Baltic Sea (Gotland Deep and Landsort Deep) to evaluate the role of iron for cyanobacterial bloom development in these estuarine waters. Depth profiles of Fe(II) were measured by chemiluminescent flow injection analysis (CL-FIA). Up to 0.9 nmol Fe(II) L−1 were detected in light penetrated surface waters, which constitutes up to 20% to the dissolved Fe pool. This bioavailable iron source is a major contributor to the Fe requirements of Baltic Sea phytoplankton and apparently plays a major role for cyanobacterial bloom development during our study. Measured Fe(II) half life times in oxygenated water exceed predicted values and indicate organic Fe(II) complexation. Potential sources for Fe(II) ligands, including rainwater, are discussed. Fe(II) concentrations of up to 1.44 nmol L−1 were detected at water depths below the euphotic zone, but above the oxic anoxic interface. Mixed layer depths after strong wind events are not deep enough in summer time to penetrate the oxic-anoxic boundary layer. However, Fe(II) from anoxic bottom water may enter the sub-oxic zone via diapycnal mixing and diffusion.

Abstract [sv]

Iron chemistry measurements were conducted during summer 2007 at two distinct locations in the Baltic Sea (Gotland Deep and Landsort Deep) to evaluate the role of iron for cyanobacterial bloom development in these estuarine waters. Depth profiles of Fe(II) were measured by chemiluminescent flow injection analysis (CL-FIA). Up to 0.9 nmol Fe(II) L-1 were detected in light penetrated surface waters, which constitutes up to 20% to the dissolved Fe pool. This bioavailable iron source is a major contributor to the Fe requirements of Baltic Sea phytoplankton and apparently plays a major role for cyanobacterial bloom development during our study. Measured Fe(II) half life times in oxygenated water exceed predicted values and indicate organic Fe(II) complexation. Potential sources for Fe(II) ligands, including rainwater, are discussed. Fe(II) concentrations of up to 1.44 nmol L-1 were detected at water depths below the euphotic zone, but above the oxic anoxic interface. Mixed layer depths after strong wind events are not deep enough in summer time to penetrate the oxic-anoxic boundary layer. However, Fe(II) from anoxic bottom water may enter the sub-oxic zone via diapycnal mixing and diffusion. Udgivelsesdato: 2009

Ort, förlag, år, upplaga, sidor
2009. Vol. 6, nr Special issue, s. 2397-2420
Nyckelord [en]
Earth sciences - Exogenous eart sciences
Nyckelord [sv]
Geovetenskap - Exogen geovetenskap
Nationell ämneskategori
Geokemi
Forskningsämne
Tillämpad geologi
Identifikatorer
URN: urn:nbn:se:ltu:diva-12160Lokalt ID: b3d7b150-cacc-11de-b769-000ea68e967bOAI: oai:DiVA.org:ltu-12160DiVA, id: diva2:985110
Anmärkning
Validerad; 2009; 20091106 (jgn)Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2017-11-24Bibliografiskt granskad

Open Access i DiVA

fulltext(848 kB)142 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 848 kBChecksumma SHA-512
c7c285568bbc8125bc8e90769f1e40791eb81316ae0e2296ddd8efd1d0114482db87010e163b557877e6e38de90ad194ff4544427b7c3effc8f52b729f481ac9
Typ fulltextMimetyp application/pdf

Övriga länkar

http://www.biogeosciences.net/6/2397/2009/

Personposter BETA

Gelting, JohanIngri, Johan

Sök vidare i DiVA

Av författaren/redaktören
Gelting, JohanIngri, Johan
Av organisationen
Geovetenskap och miljöteknik
I samma tidskrift
Biogeosciences
Geokemi

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 142 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

urn-nbn

Altmetricpoäng

urn-nbn
Totalt: 109 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf