Organization of planktonic Tintinnina assemblages in the Atlantic Ocean - Archive ouverte HAL Access content directly
Journal Articles Frontiers in Marine Science Year : 2023

Organization of planktonic Tintinnina assemblages in the Atlantic Ocean

Haibo Li
  • Function : Author
Glen Tarran
  • Function : Author
Giorgio Dall’olmo
  • Function : Author
Andrew Rees
  • Function : Author
Michel Denis
  • Function : Author
Chaofeng Wang
  • Function : Author
Gérald Grégori
Yi Dong
  • Function : Author
Yuan Zhao
  • Function : Author
Wuchang Zhang
  • Function : Author
Tian Xiao
  • Function : Author


Marine plankton have different biogeographical distribution patterns. However, it is not clear how the entire plankton assemblage is composed of these species with distinct biogeographical patterns. Tintinnina (tintinnids) is single-celled planktonic protozoa commonly used as model organisms in planktonic studies. In this research, we investigated the organization of Tintinnina assemblages along the Atlantic Meridional Transect (AMT) spanning over 90 degrees of latitude during the 29 th AMT cruise (2019). Tintinnina with high frequency of occurrence was classified into four biogeographic distribution patterns (equatorial, gyre, frontal, and deep Chl a maximum) according to their vertical and horizontal distribution. All species falling within each distribution pattern formed a sub-assemblage. Equatorial sub-assemblage dominated in upper waters of the equatorial zone and gyre centres. Equatorial and frontal sub-assemblages co-dominated in upper waters of the frontal zones. Deep Chlorophyll a maximum Layer (DCM) sub-assemblage dominated in the DCM waters. Some Tintinnina species with high abundance could be used as indicator species of sub-assemblages. The Tintinnina assemblages in the northern and southern hemispheres exhibited asymmetry in terms of species composition. The latitudinal gradient of Tintinnina species richness was bimodal, which was shaped by the superposition of the species number of the four sub-assemblages with latitude. The result of this study contributes to the understanding of Tintinnina assemblage in the equatorial zone and subtropical gyres of the Pacific and Indian Ocean. It is also valuable for predicting the influence of global warming on changes in Tintinnina distribution and species richness.
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hal-04005554 , version 1 (02-03-2023)


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Haibo Li, Glen Tarran, Giorgio Dall’olmo, Andrew Rees, Michel Denis, et al.. Organization of planktonic Tintinnina assemblages in the Atlantic Ocean. Frontiers in Marine Science, 2023, 10, ⟨10.3389/fmars.2023.1082495⟩. ⟨hal-04005554⟩
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