Ecological niches of open ocean phytoplankton taxa

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Author(s) Brun, Philipp, Vogt, Meike, Payne, Mark R., Gruber, Nicolas, O'Brien, Colleen J., Buitenhuis, Erik T., Le Quere, Corinne, Leblanc, Karine, Luo, Ya-Wei
Publication Type Journal Items, Publication Status: Published
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Title Ecological niches of open ocean phytoplankton taxa
Author(s) Brun, Philipp
Vogt, Meike
Payne, Mark R.
Gruber, Nicolas
O'Brien, Colleen J.
Buitenhuis, Erik T.
Le Quere, Corinne
Leblanc, Karine
Luo, Ya-Wei
Journal or Series Title Limnology and Oceanography
Volume Number 60
Issue Number 3
Start Page 1020
End Page 1038
ISSN 0024-3590
1939-5590
Publisher American Society of Limnology and Oceanography
Publication Place Waco, TX
Publication Date 2015-05
Abstract We characterize the realized ecological niches of 133 phytoplankton taxa in the open ocean based on observations from the MAREDAT initiative and a statistical species distribution model (MaxEnt). The models find that the physical conditions (mixed layer depth, temperature, light) govern large-scale patterns in phytoplankton biogeography over nutrient availability. Strongest differences in the realized niche centers were found between diatoms and coccolithophores. Diatoms (87 species) occur in habitats with significantly lower temperatures, light intensity and salinity, with deeper mixed layers, and with higher nitrate and silicate concentrations than coccolithophores (40 species). However, we could not statistically separate the realized niches of coccolithophores from those of diazotrophs (two genera) and picophytoplankton (two genera). Phaeocystis (two species) niches only clearly differed from diatom niches for temperature. While the realized niches of diatoms cover the majority of niche space, the niches of picophytoplankton and coccolithophores spread across an intermediate fraction and diazotroph and colonial Phaeocystis niches only occur within a relatively confined range of environmental conditions in the open ocean. Our estimates of the realized niches roughly match the predictions of Reynolds' C-S-R model for the global ocean, namely that taxa classified as nutrient stress tolerant have niches at lower nutrient and higher irradiance conditions than light stress tolerant taxa. Yet, there is considerable within-class variability in niche centers, and many taxa occupy broad niches, suggesting that more complex approaches may be necessary to capture all aspects of phytoplankton ecology.
DOI 10.1002/lno.10074
Additional Notes Published online 5 March 2015
Published online by Wiley-Blackwell, Publication Place: Hoboken, NJ
Document Type Article
Publication Status Published
Language English
Assigned Organisational Unit(s) 03731
Organisational Unit(s)
NEBIS System Number 000004529
Source Database ID WOS-000354490100023
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@article{Brn2015,
  author = "Brun, Philipp and Vogt, Meike and Payne, Mark R. and Gruber, Nicolas and O'Brien, Colleen J. and Buitenhuis, Erik T. and Le Quere, Corinne and Leblanc, Karine and Luo, Ya-Wei",
  title = "{E}cological niches of open ocean phytoplankton taxa",
  journal = "Limnology and Oceanography",
  year = 2015,
  volume = "60",
  number = "3",
  pages = "1020--1038",
  month = may,
}


E-Citations record created: Mon, 22 Jun 2015, 15:33:18 CET