Dimethylsulphide, clouds and phytoplankton: Insights from a simple plankton ecosystem feedback model.

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Title Dimethylsulphide, clouds and phytoplankton: Insights from a simple plankton ecosystem feedback model.
Author Cropp, Roger Allan; Norbury, John; Braddock, Roger David
Journal Name Global Biogeochemical Cycles
Editor Meinrat O. Andreae
Year Published 2007
Place of publication Washington DC, USA
Publisher American Geophysical Union
Abstract The hypothesis that marine plankton ecosystems may effectively regulate climate by the production of dimethylsulphide (DMS) has attracted substantial research effort over recent years. This hypothesis suggests that DMS produced by marine ecosystems can affect cloud properties and hence the averaged irradiance experienced by the phytoplankton that produce DMS's precursor dimethylsulphoniopropionate (DMSP). This paper describes the use of a simple model to examine the effects of such a biogenic feedback on the ecosystem that initiates it. We compare the responses to perturbation of a simple marine nitrogen-phytoplankton-zooplankton (NPZ) ecosystem model with and without biogenic feedback. Our analysis of this heuristic model reveals that the addition of the feedback can increase the model's resilience to perturbation and hence stabilize the model ecosystem. This result suggests the hypothesis that DMS may play a role in stabilizing marine plankton ecosystem dynamics through its effect on the atmosphere.
Peer Reviewed Yes
Published Yes
Publisher URI http://www.agu.org/journals/gl/
Alternative URI http://dx.doi.org/10.1029/2006GB002812
Copyright Statement Copyright 2007 American Geophysical Union. Please refer to the journal link for access to the definitive, published version.
Volume 21
Page from 1
Page to 17
ISSN 0886-6236
Date Accessioned 2007-03-07
Language en_AU
Faculty Faculty of Science, Environment, Engineering and Technology
Subject PRE2009-Environmental Sciences
URI http://hdl.handle.net/10072/17898
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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