Cited by 137Aquatic Ecosystems and Phytoplankton DynamicsGeochemistry and Elemental AnalysisMarine and coastal ecosystems

The biogeochemistry of tropical lakes: a case study from Lake Matano, Indonesia

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Crowe, Sean A., O’Neill, Andrew H., Katsev, Sergei, Hehanussa, Peter, Haffner, G. Douglas, Sundby, Bjørn, Mucci, Alfonso, Fowle, David A.·2008·Limnology and Oceanography

Abstract

We examined the chemical composition of the water column of Lake Matano, Sulawesi Island, Indonesia, to document how the high abundances of Fe (hydr)oxides in tropical soils and minimal seasonal temperature variability affect biogeochemical cycling in lakes. Lake Matano exhibits weak thermal stratification, yet a persistent pycnocline separates an oxic epilimnion from anoxic meta‐ and hypolimnions. The concentration of soluble P in the epilimnetic waters is very low and can be attributed to scavenging by Fe (hydr)oxides. Chromium concentrations in the epilimnion are high (up to 180 nmol L−1), but below U.S. Environmental Protection Agency guidelines for aquatic ecosystems. The concentration of chromium decreases sharply across the oxic‐anoxic boundary, revealing that the hypolimnion is a sink for Cr. Flux calculations using a one‐dimensional transportreaction model for the water column fail to satisfy mass balance requirements and indicate that sediment transport and diagenesis play an important role in the exchange of Fe, Mn, P, and Cr between the epilimnion and hypolimnion. Exchange of water between the epilimnion and hypolimnion is slow and on a time scale similar to temperate meromictic lakes. This limits recycling of P and N to the epilimnion and removal of Cr to the hypolimnion, both of which likely restrict primary production in the epilimnion. Owing to the slow exchange, steep concentration gradients in Fe and Mn species develop in the metalimnion. These concentration gradients are conducive to the proliferation of chemoautotrophic and anoxygenic phototrophic microbial communities, which may contribute a significant fraction to the total primary production in the lake.

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Crossref · 10.4319/lo.2008.53.1.0319

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  • In Lake Matano, Ni and Co exhibit divergent behavior, implying that different biogeochemical processes govern the concentrations of each metal.

    “In Lake Matano, Ni and Co exhibit divergent behavior implying that different biogeochemical process govern concentrations of each metal”
  • This is consistent with relatively high Co concentrations in the anoxic ferruginous waters of Lake Matano compared to its oxic surface waters.

    “This is consistent with the relatively high Co concentrations in the anoxic ferruginous waters of Lake Matano compared to its oxic surface waters”
  • Production of trace hydrogen sulfide through microbial sulfate reduction may strongly govern aqueous Ni concentrations even under ferruginous conditions.

    “Further, production of trace hydrogen sulfide through microbial sulfate reduction may play a strong role in governing aqueous Ni concentrations, even under ferruginous conditions”

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Authors
Crowe, S. A., O’Neill, A. H., Katsev, S., Hehanussa, P., Haffner, G. D., Sundby, B., Mucci, A., & Fowle, D. A.
Affiliations
  • Université du Québec à Montréal (CA)
  • Great Lakes Institute for Environmental Research (CA)
  • Indonesian Institute of Sciences (ID)
  • Université du Québec à Rimouski (CA)
  • University of Kansas (US)
Venue
Limnology and Oceanography
Publisher
Wiley
Published
2008-01
Volume
53
Issue
1
Pages
319-331
ISSN
  • 0024-3590 (ISSN-L)
  • 1939-5590
OpenAlex
W2155379185
Cited by
137
References
44
Citations by year
2026: 3 · 2025: 10 · 2024: 8 · 2023: 13 · 2022: 7 · 2021: 13 · 2020: 10 · 2019: 8 · 2018: 9 · 2017: 8 · 2016: 10 · 2015: 6 · 2014: 7 · 2013: 6 · 2012: 6
FWCI
3.15
Type
journal article
Language
en
Open access
Locations
  • Limnology and Oceanography (publishedVersion)
  • KU ScholarWorks (The University of Kansas) (submittedVersion, other-oa)
Topics
  • Physical Sciences › Environmental Science › Environmental Chemistry › Aquatic Ecosystems and Phytoplankton Dynamics
  • Physical Sciences › Earth and Planetary Sciences › Geochemistry and Petrology › Geochemistry and Elemental Analysis
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine and coastal ecosystems
Keywords
Lake Matano, tropical lakes, iron oxyhydroxide, phosphorus scavenging, chromium, hypolimnetic anoxia, oxic-anoxic boundary, metalimnion, sediment diagenesis, sediment transport, phosphorus cycling, nitrogen cycling, metal cycling, thermal stratification, pycnocline, primary production, chemoautotrophic bacteria, anoxygenic phototrophic bacteria

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