Earth, Wind, Fire, and Pollution: Aerosol Nutrient Sources and Impacts on Ocean Biogeochemistry


Hamilton D. S., Perron M. M. G., Bond T. C., Bowie A. R., Buchholz R. R., Guieu C., ...More

ANNUAL REVIEW OF MARINE SCIENCE, vol.14, pp.303-330, 2022 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Review
  • Volume: 14
  • Publication Date: 2022
  • Doi Number: 10.1146/annurev-marine-031921-013612
  • Journal Name: ANNUAL REVIEW OF MARINE SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Animal Behavior Abstracts, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Compendex, EMBASE, Geobase, INSPEC, MEDLINE, Veterinary Science Database
  • Page Numbers: pp.303-330
  • Keywords: mineral dust, fires, volcanoes, phosphate, soluble iron, ocean biogeochemistry, DISSOLVED IRON DEPOSITION, BIOMASS-BURNING EMISSIONS, DUST DEPOSITION, MINERAL DUST, BIOAVAILABLE PHOSPHORUS, CHEMICAL-CHARACTERIZATION, ATMOSPHERIC DEPOSITION, PRIMARY PRODUCTIVITY, SEDIMENT TRANSPORT, TRACE-ELEMENTS
  • Istanbul Technical University Affiliated: Yes

Abstract

A key Earth system science question is the role of atmospheric deposition in supplying vital nutrients to the phytoplankton that form the base of marine food webs. Industrial and vehicular pollution, wildfires, volcanoes, biogenic debris, 'and desert dust all carry nutrients within their plumes throughout the globe. In remote ocean ecosystems, aerosol deposition represents an essential new source of nutrients for primary production. The large spatiotemporal variability in aerosols from myriad sources combined with the differential responses of marine biota to changing fluxes makes it crucially important to understand where, when, and how much nutrients from the atmosphere enter marine ecosystems. This review brings together existing literature, experimental evidence of impacts, and new atmospheric nutrient observations that can be compared with atmospheric and ocean biogeochemistry modeling. We evaluate the contribution and spatiotemporal variability of nutrient-bearing aerosols from desert dust, wildfire, volcanic, and anthropogenic sources, including the organic component, deposition fluxes, and oceanic impacts.