Cited by 44Marine and coastal ecosystemsGeochemistry and Elemental AnalysisPaleontology and Stratigraphy of Fossils

Nutrient cycling and the biogeochemistry of manganese, iron, and zinc in jellyfish Lake, Palau

Landing, William M., Burnett, William C., Lyons, W. Berry, Orem, William H.·1991·Limnology and Oceanography

Abstract

The oxic waters in Jellyfish Lake, a stagnant marine lake in Palau, are depleted in NO3−, PO43−, dissolved Si, Mn, Fe, and Zn, while the underlying anoxic waters are significantly enriched in these species and NH3. NH3 and PO43 regeneration and dissolved sulfide production in the anoxic zone yield a stoichiometry of C138N13P for organic matter undergoing recycling in the anoxic waters. In the anoxic zone, dissolved Mn, Fe, and Zn reach maximum concentrations of 30, 22, and 2.5 nM. The Fe concentrations are consistent with mackinawite or greigite solubility control. Mn approaches saturation with respect to haurite. Zn may be controlled by the solubility of ZnS coprecipitate. The sediments are enriched in Fe and depleted in Zn relative to Asian dust at Enewetak. A two‐box model is used to calculate an eddy diffusion coefficient of 0.0015 cm2 s−1 across the chemocline. The upward diffusive loss of NH3 added to the sedimentation rate of N and multiplied by the stoichiometric C : N ratio yields an organic carbon flux into the anoxic waters of 1,200 µmol C cm−2 yr−1, which is ∼ 13% of the total primary productivity.

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Crossref · 10.4319/lo.1991.36.3.0515

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  • In some modern anoxic aqueous systems with a strong redoxcline, such as Jellyfish Lake, total dissolved Zn concentrations increase with depth due to formation of aqueous sulfide complexes.

    “For instance, in some conditions where a strong redoxcline exists, such as in Jellyfish Lake, Palau, total dissolved Zn concentrations increase with depth due to the formation of aqueous sulfide complexes”

    From Trace elements at the intersection of marine biological and geochemical evolution (2016) · cites this paper as Landing et al., 1991

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Authors
Landing, W. M., Burnett, W. C., Lyons, W. B., & Orem, W. H.
Affiliations
  • Florida State University (US)
  • University of New Hampshire (US)
  • United States Geological Survey (US)
Venue
Limnology and Oceanography
Publisher
Wiley
Published
1991-05
Volume
36
Issue
3
Pages
515-525
ISSN
  • 0024-3590 (ISSN-L)
  • 1939-5590
OpenAlex
W2120604270
Cited by
44
References
18
Citations by year
2022: 1 · 2021: 2 · 2018: 2 · 2017: 1 · 2016: 2 · 2015: 1 · 2013: 1 · 2012: 2
FWCI
4.97
Type
journal article
Language
en
Open access
closed
Locations
Limnology and Oceanography (publishedVersion)
Funders
Earthwatch Institute
Topics
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Paleontology and Stratigraphy of Fossils
Keywords
nutrient cycling, manganese, iron, zinc, anoxic zone, chemocline, mackinawite, greigite, organic matter mineralization, ammonium regeneration, phosphate regeneration, dissolved sulfide, turbulent diffusion, organic carbon flux, primary productivity, Asian dust, two-box model

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