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Title: Contrasting biogeography and diversity patterns between diatoms and haptophytes in the central Pacific Ocean
Authors: Endo, Hisashi  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0003-0016-1624 (unconfirmed)
Ogata, Hiroyuki  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0001-6594-377X (unconfirmed)
Suzuki, Koji
Author's alias: 遠藤, 寿
緒方, 博之
Issue Date: 19-Jul-2018
Publisher: Springer Nature
Journal title: Scientific Reports
Volume: 8
Thesis number: 10916
Abstract: Diatoms and haptophytes are two major phytoplankton groups, playing pivotal roles in global biogeochemical cycles and marine ecosystems. In general, diatoms have higher growth rates than haptophytes, whereas haptophytes tend to have higher nutrient uptake affinity. However, precise linkages between their ecological traits and geographical distributions remain poorly understood. Herein, we examined the basin-scale variability of the abundance and taxonomic composition of these two phytoplankton groups across 35 sites in the Pacific Ocean using DNA metabarcoding. The diatom community was generally dominated by a few genera at each sample site, whereas the haptophyte community consisted of a large number of genera in most of the sites. The coexistence of various haptophyte genera might be achieved by diversification of their ecophysiological traits such as mixotrophy. On the other hand, the diatom community might experience greater inter-genus competition due to the rapid uptake of nutrients. Our data further supports the notion that their distinct ecological strategies underlie the emergence of contrasting diversity patterns of these phytoplankton groups in the central Pacific at a basin scale.
Rights: © The Author(s) 2018. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
URI: http://hdl.handle.net/2433/234233
DOI(Published Version): 10.1038/s41598-018-29039-9
PubMed ID: 30026492
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