liu.seSök publikationer i DiVA
Ändra sökning
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • 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
Trophodynamics and biomagnification of trace metals in aquatic food webs: The case of Rufiji estuary in Tanzania
Dar Es Salaam Univ, Tanzania.
Linköpings universitet, Institutionen för tema, Tema Miljöförändring. Linköpings universitet, Filosofiska fakulteten.
Linköpings universitet, Institutionen för tema, Tema Miljöförändring. Linköpings universitet, Filosofiska fakulteten.ORCID-id: 0000-0001-7184-1593
Linköpings universitet, Institutionen för tema, Tema Miljöförändring. Linköpings universitet, Filosofiska fakulteten.
Visa övriga samt affilieringar
2019 (Engelska)Ingår i: Applied Geochemistry, ISSN 0883-2927, E-ISSN 1872-9134, Vol. 100, s. 160-168Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Transfer of trace metals into fish of commercial value poses a public health concern. Therefore, sediments, invertebrates, and fish from three sampling sites in the Rufiji estuary were analyzed for trace metals to evaluate their concentrations and trophic transfer within estuarine food web. Stable isotopes of carbon and nitrogen were also used to study the trophic relationship between different organisms. Biomagnification of trace metals in organisms from different trophic levels was quantified and evaluated by calculating the bioaccumulation factor and biomagnification factor. Trophic magnification factor for different trace metals was determined from the slope of the regression line between trace metal concentration and the trophic level of functional groups in sampled organisms. The results indicated that As and Zn displayed trophic level-dependent accumulation in the Rufiji food webs. As and Zn increased with the trophic level, whereas Ag, As, Co, Cr, Cu, Mn, Ni, and Pb depicted an opposite trend. Food web magnification factors varied from -0.57 for Ni to 0.39 for Zn, whereas trophic magnification factor varied from 0.27 for Ni to 2.47 for Zn. Zn and Ni bioaccumulate in the food webs as indicated by a slope greater than zero, whereas the remaining trace metals are eliminated from food webs or their trophic transfer is interrupted.

Ort, förlag, år, upplaga, sidor
PERGAMON-ELSEVIER SCIENCE LTD , 2019. Vol. 100, s. 160-168
Nyckelord [en]
Food web; Estuary; Metals; Trophic level; Magnification factors; Bioaccumulation
Nationell ämneskategori
Miljövetenskap
Identifikatorer
URN: urn:nbn:se:liu:diva-153816DOI: 10.1016/j.apgeochem.2018.11.016ISI: 000454459100015OAI: oai:DiVA.org:liu-153816DiVA, id: diva2:1278053
Anmärkning

Funding Agencies|Vetenskapsradet [348-211-7408]; Swedish Institute

Tillgänglig från: 2019-01-11 Skapad: 2019-01-11 Senast uppdaterad: 2021-12-29

Open Access i DiVA

Fulltext saknas i DiVA

Övriga länkar

Förlagets fulltext

Sök vidare i DiVA

Av författaren/redaktören
Pajala, GustavRouth, JoyantoDario, MårtenKristoffersson, Peter
Av organisationen
Tema MiljöförändringFilosofiska fakultetenInstitutionen för tema
I samma tidskrift
Applied Geochemistry
Miljövetenskap

Sök vidare utanför DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetricpoäng

doi
urn-nbn
Totalt: 100 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • 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