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Thermal niche differentiation in the benthic diatom Cylindrotheca closterium (Bacillariophyceae) complex

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Abstract
Coastal waters are expected to undergo severe warming in the coming decades. Very little is known about how diatoms, the dominant primary producers in these habitats, will cope with these changes. We investigated the thermal niche of Cylindrotheca closterium, a widespread benthic marine diatom, using 24 strains collected over a wide latitudinal gradient. A multi-marker phylogeny in combination with a species delimitation approach shows that C. closterium represents a (pseudo)cryptic species complex, and this is reflected in distinct growth response patterns in terms of optimum growth temperature, maximum growth rate, and thermal niche width. Strains from the same Glade displayed a similar thermal response, suggesting niche conservation between closely related strains. Due to their lower maximum growth rate and smaller thermal niche width, we expect the polar species to be particularly sensitive to warming, and, in the absence of adaptation, to be replaced with species from lower latitudes.
Keywords
REPRODUCTIVE ISOLATION, INTERTIDAL SEDIMENTS, PHYLOGENETIC SIGNAL, FRESH-WATER, BALTIC SEA, TEMPERATURE, GROWTH, PHOTOSYNTHESIS, ADAPTATION, DIVERSITY, Cylindrotheca closterium, benthic diatom, thermal niche, ocean warming, cryptic species, niche conservation

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Citation

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MLA
Stock, Willem, et al. “Thermal Niche Differentiation in the Benthic Diatom Cylindrotheca Closterium (Bacillariophyceae) Complex.” FRONTIERS IN MICROBIOLOGY, vol. 10, 2019.
APA
Stock, W., Vanelslander, B., Ruediger, F., Sabbe, K., Vyverman, W., & Karsten, U. (2019). Thermal niche differentiation in the benthic diatom Cylindrotheca closterium (Bacillariophyceae) complex. FRONTIERS IN MICROBIOLOGY, 10.
Chicago author-date
Stock, Willem, Bart Vanelslander, Franziska Ruediger, Koen Sabbe, Wim Vyverman, and Ulf Karsten. 2019. “Thermal Niche Differentiation in the Benthic Diatom Cylindrotheca Closterium (Bacillariophyceae) Complex.” FRONTIERS IN MICROBIOLOGY 10.
Chicago author-date (all authors)
Stock, Willem, Bart Vanelslander, Franziska Ruediger, Koen Sabbe, Wim Vyverman, and Ulf Karsten. 2019. “Thermal Niche Differentiation in the Benthic Diatom Cylindrotheca Closterium (Bacillariophyceae) Complex.” FRONTIERS IN MICROBIOLOGY 10.
Vancouver
1.
Stock W, Vanelslander B, Ruediger F, Sabbe K, Vyverman W, Karsten U. Thermal niche differentiation in the benthic diatom Cylindrotheca closterium (Bacillariophyceae) complex. FRONTIERS IN MICROBIOLOGY. 2019;10.
IEEE
[1]
W. Stock, B. Vanelslander, F. Ruediger, K. Sabbe, W. Vyverman, and U. Karsten, “Thermal niche differentiation in the benthic diatom Cylindrotheca closterium (Bacillariophyceae) complex,” FRONTIERS IN MICROBIOLOGY, vol. 10, 2019.
@article{8640923,
  abstract     = {Coastal waters are expected to undergo severe warming in the coming decades. Very little is known about how diatoms, the dominant primary producers in these habitats, will cope with these changes. We investigated the thermal niche of Cylindrotheca closterium, a widespread benthic marine diatom, using 24 strains collected over a wide latitudinal gradient. A multi-marker phylogeny in combination with a species delimitation approach shows that C. closterium represents a (pseudo)cryptic species complex, and this is reflected in distinct growth response patterns in terms of optimum growth temperature, maximum growth rate, and thermal niche width. Strains from the same Glade displayed a similar thermal response, suggesting niche conservation between closely related strains. Due to their lower maximum growth rate and smaller thermal niche width, we expect the polar species to be particularly sensitive to warming, and, in the absence of adaptation, to be replaced with species from lower latitudes.},
  articleno    = {1395},
  author       = {Stock, Willem and Vanelslander, Bart and Ruediger, Franziska and Sabbe, Koen and Vyverman, Wim and Karsten, Ulf},
  issn         = {1664-302X},
  journal      = {FRONTIERS IN MICROBIOLOGY},
  keywords     = {REPRODUCTIVE ISOLATION,INTERTIDAL SEDIMENTS,PHYLOGENETIC SIGNAL,FRESH-WATER,BALTIC SEA,TEMPERATURE,GROWTH,PHOTOSYNTHESIS,ADAPTATION,DIVERSITY,Cylindrotheca closterium,benthic diatom,thermal niche,ocean warming,cryptic species,niche conservation},
  language     = {eng},
  pages        = {12},
  title        = {Thermal niche differentiation in the benthic diatom Cylindrotheca closterium (Bacillariophyceae) complex},
  url          = {http://dx.doi.org/10.3389/fmicb.2019.01395},
  volume       = {10},
  year         = {2019},
}

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