The DOI matches its Crossref record; 16 of the 16 references it cites were found in a registry or an index.
The equatorial Pacific Ocean: Grazer-controlled phytoplankton populations in an iron-limited ecosystem1
Abstract
Experiments were conducted in the equatorial Pacific Ocean to assess the role of Fe and grazing in regulating use of NO3− by the phytoplankton community. Nitrate uptake rates in situ were slow because NH4+ concentrations were inhibitory and because phytoplankton biomass was kept low by grazing. When feeding of grazers was artificially suppressed, phytoplankton net growth rate increased, biomass accumulated, and NO3− was consumed. Rapid rates of Fe uptake [40 µmol Fe (g Chl a)−1 h−1] decreased by an order of magnitude in 1–2 d after Fe was added, demonstrating that these rates were under physiological regulation and were elevated in response to low Fe concentrations. Addition of Fe increased carbon uptake and the short-term N-specific NO3− uptake rate by 2–9 times. These physiological stimulations were confined to large phytoplankton (>3 µm), which thus must have been Fe-limited in situ. NO3− uptake rate and biomass of small phytoplankton were unaffected by Fe enrichment. The results thus suggest that the low biomass, NO3−-rich condition of the equatorial Pacific Ocean exists because low Fe concentrations limit use of NO3 by large phytoplankton and favor growth of small phytoplankton that are grazed efficiently and use NH4+ preferentially.
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Cites
A Manual of Chemical and Biological Methods for Seawater Analysis.
PARSONS, T. R., Maita, Y., & LALLI, C. M. (1984) · doi:10.25607/obp-1830 · Cited by 5,727
Use of nuclepore filters for counting bacteria by fluorescence microscopy
Hobbie, J. E., Daley, R. J., & Jasper, S. (1977) · Applied and Environmental Microbiology · doi:10.1128/aem.33.5.1225-1228.1977 · Cited by 4,244
UPTAKE OF NEW AND REGENERATED FORMS OF NITROGEN IN PRIMARY PRODUCTIVITY1
Dugdale, R. C., & Goering, J. J. (1967) · Limnology and Oceanography · doi:10.4319/lo.1967.12.2.0196 · Cited by 2,719
Vertex: phytoplankton/iron studies in the Gulf of Alaska
Martin, J. H., Gordon, R. M., Fitzwater, S., & Broenkow, W. W. (1989) · Deep Sea Research Part A. Oceanographic Research Papers · doi:10.1016/0198-0149(89)90144-1 · Cited by 824
Complexation of zinc by natural organic ligands in the central North Pacific
Bruland, K. W. (1989) · Limnology and Oceanography · doi:10.4319/lo.1989.34.2.0269 · Cited by 467
KINETICS OF NUTRIENT UPTAKE AND GROWTH IN PHYTOPLANKTON1
Morel, F. M. M. (1987) · Journal of Phycology · doi:10.1111/j.0022-3646.1987.00137.x · Cited by 313
Self-citationAmmonium recycling limits nitrate use in the oceanic subarctic Pacific.
Wheeler, P. A., & Kokkinakis, S. A. (1990) · Limnology and Oceanography · doi:10.4319/lo.1990.35.6.1267 · Cited by 223
Cullen, J. J., Lewis, M. R., Davis, C. O., & Barber, R. T. (1992) · Journal of Geophysical Research: Oceans · doi:10.1029/91jc01320 · Cited by 220
Hypotheses to explain high-nutrient conditions in the open sea
Cullen, J. J. (1991) · Limnology and Oceanography · doi:10.4319/lo.1991.36.8.1578 · Cited by 215
Ecological dynamics in the subarctic Pacific, a possibly iron-limited ecosystem
Miller, C. B., Frost, B. W., Wheeler, P. A., Landry, M. R., Welschmeyer, N., & Powell, T. M. (1991) · Limnology and Oceanography · doi:10.4319/lo.1991.36.8.1600 · Cited by 207
Cited by
Coale, K. H., Johnson, K. S., Fitzwater, S. E., Gordon, R. M., Tanner, S., Chavez, F. P., Ferioli, L., Sakamoto, C., Rogers, P., Millero, F., et al. (1996) · Nature · doi:10.1038/383495a0 · Cited by 1,479
Upper ocean ecosystem dynamics and iron cycling in a global three-dimensional model
Moore, J. K., Doney, S. C., & Lindsay, K. (2004) · Global Biogeochemical Cycles · doi:10.1029/2004gb002220 · Cited by 889
Interrelated influence of iron, light and cell size on marine phytoplankton growth
Sunda, W. G., & Huntsman, S. A. (1997) · Nature · doi:10.1038/37093 · Cited by 759
Influence of iron availability on nutrient consumption ratio of diatoms in oceanic waters
Takeda, S. (1998) · Nature · doi:10.1038/31674 · Cited by 709
Zinc and carbon co-limitation of marine phytoplankton
Morel, F. M. M., Reinfelder, J. R., Roberts, S. B., Chamberlain, C. P., Lee, J. G., & Yee, D. (1994) · Nature · doi:10.1038/369740a0 · Cited by 504
Self-citation
Metadata
- Authors
- Price, N. M., Ahner, B. A., & Morel, F. M. M.
- Venue
- Limnology and Oceanography
- Publisher
- Wiley
- Published
- 1994-05
- Volume
- 39
- Issue
- 3
- Pages
- 520-534
- ISSN
- 0024-3590 (ISSN-L)
- OpenAlex
- W2149058196
- Cited by
- 320
- References
- 16
- FWCI
- 17.53
- Type
- journal article
- Language
- en
- Open access
- closed
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- Price, N. M., Ahner, B. A., & Morel, F. M. M. (1994). The equatorial Pacific Ocean: Grazer-controlled phytoplankton populations in an iron-limited ecosystem1. Limnology and Oceanography. https://doi.org/10.4319/lo.1994.39.3.0520
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
