The DOI matches its Crossref record; 11 of the 11 references it cites were found in a registry or an index.
Coastal hypoxia and sediment biogeochemistry
Open accessAbstract
Abstract. The intensity, duration and frequency of coastal hypoxia (oxygen concentration <63 μM) are increasing due to human alteration of coastal ecosystems and changes in oceanographic conditions due to global warming. Here we provide a concise review of the consequences of coastal hypoxia for sediment biogeochemistry. Changes in bottom-water oxygen levels have consequences for early diagenetic pathways (more anaerobic at expense of aerobic pathways), the efficiency of re-oxidation of reduced metabolites and the nature, direction and magnitude of sediment-water exchange fluxes. Hypoxia may also lead to more organic matter accumulation and burial and the organic matter eventually buried is also of higher quality, i.e. less degraded. Bottom-water oxygen levels also affect the organisms involved in organic matter processing with the contribution of metazoans decreasing as oxygen levels drop. Hypoxia has a significant effect on benthic animals with the consequences that ecosystem functions related to macrofauna such as bio-irrigation and bioturbation are significantly affected by hypoxia as well. Since many microbes and microbial-mediated biogeochemical processes depend on animal-induced transport processes (e.g. re-oxidation of particulate reduced sulphur and denitrification), there are indirect hypoxia effects on biogeochemistry via the benthos. Severe long-lasting hypoxia and anoxia may result in the accumulation of reduced compounds in sediments and elimination of macrobenthic communities with the consequences that biogeochemical properties during trajectories of decreasing and increasing oxygen may be different (hysteresis) with consequences for coastal ecosystem dynamics.
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Cites
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Self-citationFluxes of iron and manganese across the sediment–water interface under various redox conditions
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Cited by
Howarth, R., Chan, F., Conley, D. J., Garnier, J., Doney, S. C., Marino, R., & Billen, G. (2011) · Frontiers in Ecology and the Environment · doi:10.1890/100008 · Cited by 866
The Biogeochemical Sulfur Cycle of Marine Sediments
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Methane Feedbacks to the Global Climate System in a Warmer World
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Self-citationEutrophication-Driven Deoxygenation in the Coastal Ocean
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Voss, M., Bange, H. W., Dippner, J. W., Middelburg, J. J., Montoya, J. P., & Ward, B. (2013) · Philosophical Transactions of the Royal Society B: Biological Sciences · doi:10.1098/rstb.2013.0121 · Cited by 342
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Metadata
- Authors
- Middelburg, J. J., & Levin, L. A.
- Venue
- Biogeosciences
- Publisher
- Copernicus GmbH
- Published
- 2009-07-28
- Volume
- 6
- Issue
- 7
- Pages
- 1273-1293
- ISSN
- 1726-4170 (ISSN-L)
- 1726-4189
- OpenAlex
- W2152777025
- Cited by
- 712
- References
- 11
- FWCI
- 17.68
- Type
- journal article
- Language
- en
- Open access
- gold
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