4.7 Article

Seamount effect on phytoplankton biomass and community above a deep seamount in the tropical western Pacific

Journal

MARINE POLLUTION BULLETIN
Volume 175, Issue -, Pages -

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2022.113354

Keywords

Deep seamount; Phytoplankton; Chlorophyll a; Tropical western Pacific

Funding

  1. Strategic Priority Research Program of the Chinese Academy of Sciences [XDB42000000, XDA11030204]
  2. International Partnership Program of Chinese Academy of Sciences [133137KYSB20200002]
  3. Key Research Program of Frontier Sciences, CAS [QYZDB-SSW-DQC02402]
  4. Science & Technology Basic Resources Investigation Program of China [2017FY100803]
  5. Taishan Scholar Project

Ask authors/readers for more resources

It has been observed that deep seamounts also exhibit an enhancement of phytoplankton, with high nutrient levels caused by internal tides being a key factor. This study highlights the ecological functions of deep seamounts that may have been previously overlooked.
It is generally believed that the enhancement of phytoplankton appears only in shallow and intermediate depth seamounts, while the phenomenon has also been observed in some deep seamounts by satellites recently. To figure out what effect do deep seamounts have on phytoplankton and the relevant mechanisms, the phytoplankton biomass and community on the Kocebu Seamount (depth: 1198 m) were studied. The results showed that the average Chl a concentration of the seamount was 0.09 mg.m(-3), and the Chl a maximum layer was mainly located at 150 m, and picophytoplankton such as prochlorophytes and cyanobacteria were the dominant groups. High Chl a patches (>0.2 mg.m(-3)) were mainly distributed within 20 km of the peak, and both nitrate and orthophosphate were obviously uplifted at the peak. The physical data indicated the uplifted of nutrients could be caused by the internal tides, which generated by the interaction of topography and tide. This is the first time that the promotion of phytoplankton was observed in situ on a deep seamount, and this study expounded relevant mechanisms and suggested that the ecological functions of deep seamounts may have been previously neglected.

Authors

I am an author on this paper
Click your name to claim this paper and add it to your profile.

Reviews

Primary Rating

4.7
Not enough ratings

Secondary Ratings

Novelty
-
Significance
-
Scientific rigor
-
Rate this paper

Recommended

No Data Available
No Data Available