Impacts of aeolian dust deposition on phytoplankton dynamics in Queensland coastal waters
Authors:
- 27 November 2008
- journal article
- research article
- Published by CSIRO Publishing in Marine and Freshwater Research
- Vol. 59 (11) , 951-962
Abstract
Aeolian dust deposition has been shown to stimulate phytoplankton growth in various oligotrophic oceanic regions of the northern hemisphere. The present study investigated the relationship between the change in phytoplankton biomass in Queensland coastal waters and aeolian dust deposition during the severe October 2002 dust storm, using satellite-derived chlorophyll concentrations. A response in phytoplankton standing stock immediately following dust deposition from this event was found in the area of maximal dust deposition, as defined by a previous dust transport modelling analysis. Standing stock levels increased to 1.5–2 times the long-term mean. This is the first documented episode of a dust fertilisation event in Australian coastal waters and, given the high frequency of dust storms in northern Australia, demonstrates that aeolian delivery of nutrients may be an important factor in future regional nutrient budget analyses.Keywords
This publication has 36 references indexed in Scilit:
- Spatial and temporal patterns of near-surface chlorophyll a in the Great Barrier Reef lagoonMarine and Freshwater Research, 2007
- Nitrogen fixation by Trichodesmium spp.: An important source of new nitrogen to the tropical and subtropical North Atlantic OceanGlobal Biogeochemical Cycles, 2005
- Influence of the 23 October 2002 Dust Storm on the Air Quality of Four Australian CitiesWater, Air, & Soil Pollution, 2005
- Dissolution of atmospheric iron in seawaterGeophysical Research Letters, 2004
- Marine nitrogen fixation: what's the fuss?Current Opinion in Microbiology, 2001
- Catchment management and the Great Barrier ReefWater Science & Technology, 2001
- Widespread Iron Limitation of Phytoplankton in the South Pacific OceanScience, 1999
- Nitrogen fixation by Trichodesmium spp. in the Central and Northern Great Barrier Reef Lagoon:relative importance of the fixed-nitrogen loadMarine Ecology Progress Series, 1999
- Confirmation of iron limitation of phytoplankton photosynthesis in the equatorial Pacific OceanNature, 1996
- A massive phytoplankton bloom induced by an ecosystem-scale iron fertilization experiment in the equatorial Pacific OceanNature, 1996