Benthic foraminifera in marine hypoxic environment: A review of recent research advances

doi:10.13745/j.esf.sf.2021.9.23

Abstract

Abstract:

Global warming and human activities increase the frequency and scope of marine low-oxygen environments, and hypoxia has a significant impact on marine benthic communities. Benthic foraminifera, among a few eukaryotes, can widely adapt to and survive in various marine low-oxygen environments, and the response of benthic foraminifera to hypoxia and the adaptation mechanisms are hot topics in marine research with many unsolved mysteries. This article summarizes the distribution characteristics of living foraminifera in various marine hypoxic environments and their response to artificially induced hypoxic environment, chemical composition characteristics of benthic foraminiferal shells in hypoxic environment, and survival mechanisms of foraminifera in hypoxic environments, seeking to provide a reference for future research on benthic foraminifera under marine hypoxic environment. Benthic foraminifera, as an important tool for the reconstruction of the ancient marine environment, are of great significance to our understanding of the evolutionary history of ocean hypoxia. Looking forward, future researches should focus on cellular, molecular and physiological investigation of the mechanisms of foraminiferal adaptation to hypoxic environment as well as gaining phylogenic insights into the historical evolutionary processes of eukaryotic adaptation to hypoxic environment, so as to provide a theoretical basis for using foraminifera as a tool to better reconstruct and predict changes under hypoxic conditions.

Key words: foraminifera, hypoxic, anoxic, benthic, sediment, denitrification

CLC Number:

P735

XU Zhaomeng, LIU Sumei. Benthic foraminifera in marine hypoxic environment: A review of recent research advances[J]. Earth Science Frontiers, 2022, 29(5): 59-72.

Figures/Tables 3

References 119

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