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Can Microscale Chemical Patches Persist in the Sea? Microelectrode Study of Marine Snow, Fecal Pellets
Abstract
Microelectrode studies demonstrate the existence of persistent oxygen and p H gradients around flocculent, macroscopic marine particles known as marine snow. Oxygen is partially, but continuously, depleted within and around marine snow in the dark and can be completely depleted within large fecal pellets. Boundary layers hundreds of micrometers thick are maintained despite advection of fluid past the particles. The existence of chemical microhabitats on the scale of millimeters around macroscopic particles in the pelagic zone may significantly influence the distribution and activity of marine microorganisms and permit processes requiring low oxygen, including denitrification.
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Citations
Cited by
Environmental genome shotgun sequencing of the sargasso sea
Venter, J. C., Remington, K., Heidelberg, J. F., Halpern, A. L., Rusch, D., Eisen, J. A., Wu, D., Paulsen, I., Nelson, K. E., Nelson, W., et al. (2004) · Science · doi:10.1126/science.1093857 · Cited by 4,376
Microbial ecology of expanding oxygen minimum zones
Wright, J. J., Konwar, K. M., & Hallam, S. J. (2012) · Nature Reviews Microbiology · doi:10.1038/nrmicro2778 · Cited by 579
Oremland, R. S., Hollibaugh, J. T., Maest, A. S., Presser, T. S., Miller, L. G., & Culbertson, C. W. (1989) · Applied and Environmental Microbiology · doi:10.1128/aem.55.9.2333-2343.1989 · Cited by 364
Bacterioplankton Roles in Cycling of Organic Matter: The Microbial Food Web
Fuhrman, J. (1992) · Primary Productivity and Biogeochemical Cycles in the Sea · doi:10.1007/978-1-4899-0762-2_20 · Cited by 269
The chemical defense ecology of marine unicellular plankton: constraints, mechanisms, and impacts
Wolfe, G. (2000) · The Biological Bulletin · doi:10.2307/1542526 · Cited by 263
“Beyond, turbulence at the millimeter scale also dissipates microzone gradients, although the impact is still controversial (Mitchell et al., 1985; Alldredge and Cohen, 1987).”
Metadata
- Authors
- Alldredge, A. L., & Cohen, Y.
- Venue
- Science
- Published
- 1987-02-06
- Volume
- 235
- Issue
- 4789
- Pages
- 689-691
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2030973965
- Cited by
- 440
- References
- 0
- FWCI
- 15.50
- Type
- journal article
- Language
- en
- Open access
- closed
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- Alldredge, A. L., & Cohen, Y. (1987). Can Microscale Chemical Patches Persist in the Sea? Microelectrode Study of Marine Snow, Fecal Pellets. Science. https://doi.org/10.1126/science.235.4789.689
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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