Attenuation of wind intensities exacerbates anoxic conditions leading to sulfur plume development off the coast of Peru.

ABSTRACT: The release of vast quantities of sulfide from the sediment into the water column, known as a sulfidic event, has detrimental consequences on fish catches, including downstream effects on other linked element cycles. Despite being frequent occurrences in marine upwelling regions, our understanding of the factors that moderate sulfidic event formation and termination are still rudimentary. Here, we examined the biogeochemical and hydrodynamic conditions that underpinned the formation/termination of one of the largest sulfur plumes to be reported in the Peruvian upwelling zone. Consistent with previous research, we find that the sulfur-rich plume arose during the austral summer when anoxic conditions (i.e., oxygen and nitrate depletion) prevailed in waters overlying the upper shelf. Furtherm

SUBMITTER: Flores E 

PROVIDER: S-EPMC10468053 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature