The reduction in the biomass of cyanobacterial N2 fixer and the biological pump in the Northwestern Pacific Ocean

Dongseon Kim, Jin Hyun Jeong, Tae Wook Kim, Jae Hoon Noh, Hyung Jeek Kim, Dong Han Choi, Eung Kim, Dongchull Jeon

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

The comparison of sediment trap data with physical and biogeochemical variables in the surface water column of the Tropical Northwestern Pacific Ocean (TNWPO) indicated that the magnitude of the springtime biological pump has reduced with time due to a corresponding decrease in the biomass of cyanobacterial N2 fixer. The decrease in the biomass of N2 fixer likely resulted from a reduction in phosphate concentrations in response to surface water warming and consequent shoaling of the mixed layer depth during the study period (2009â '2014). The same reduction in biological pump was also observed during summer. However, the cause of the summer reduction remains uncertain and is worth assessing in future studies. Our findings have major implications for predicting future trends of the biological pump in the TNWPO, where significant warming has occurred.

Original languageEnglish
Article number41810
JournalScientific reports
Volume7
DOIs
Publication statusPublished - 2017 Feb 3

ASJC Scopus subject areas

  • General

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