Long-term changes in temperate Australian coastal waters: implications for phytoplankton

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dc.contributor.author Thompson, P. en_US
dc.contributor.author Baird, Mark en_US
dc.contributor.author Ingleton, T en_US
dc.contributor.author Doblin, Martina en_US
dc.contributor.editor en_US
dc.date.accessioned 2010-05-28T09:45:32Z
dc.date.available 2010-05-28T09:45:32Z
dc.date.issued 2009 en_US
dc.identifier 2009005057 en_US
dc.identifier.citation Thompson P. et al. 2009, 'Long-term changes in temperate Australian coastal waters: implications for phytoplankton', Inter Research, vol. 394, no. NA, pp. 1-19. en_US
dc.identifier.issn 0171-8630 en_US
dc.identifier.other C1 en_US
dc.identifier.uri http://hdl.handle.net/10453/8802
dc.description.abstract A ~60 yr physical and chemical data set from 4 coastal stations around Australia plus remotely sensed SeaWiFS and phytoplankton taxonomic data were used to evaluate the temporal and spatial variation in phytoplankton ecology. The most consistent trend observed at all stations was a long-term increase in surface salinity of ~0.003 ? 0.0008 psu yr?1. All stations showed positive trends in temperature, with the fastest surface warming (0.0202?C yr?1 over 60 yr) in the western Tasman Sea. Long-term trends in warming and stratification were more evident in some months and were not well characterized by annual averages. There was no general pattern of increasing stratification (0 to 50 m); only some stations and a few months showed significant changes. Long-term trends in surface nitrate and phosphate concentrations were either not significant (3 instances) or positive (5 instances) and were up to 6.1 nM phosphate yr?1. A pronounced decline in silicate was evident at the 3 east coast stations, with concentrations falling by as much as 58 nM yr?1 over the last ~30 yr. The western Tasman Sea experienced a ~50% decline in the growth rate and biomass of the spring bloom from 1997 to 2007, while other sites showed significant temporal variability in chlorophyll a that was associated with the Southern Oscillation Index (SOI). Diatoms tended to dominate the microplankton, especially during periods of low stratification. In conclusion, the physical, chemical and biological properties of Australian temperate waters have changed considerably over the last 60 yr in response to variation in the SOI and the strengthening East Australian Current. en_US
dc.language en_US
dc.publisher Inter Research en_US
dc.relation.isbasedon http://dx.doi.org/10.3354/meps08297 en_US
dc.title Long-term changes in temperate Australian coastal waters: implications for phytoplankton en_US
dc.parent Marine Ecology Progress Series en_US
dc.journal.volume 394 en_US
dc.publocation Germany en_US
dc.identifier.startpage 1 en_US
dc.identifier.endpage 19 en_US
dc.cauo.name SCI.Environmental Sciences en_US
dc.conference Verified OK en_US
dc.for 060205 en_US
dc.personcode 0000062032 en_US
dc.personcode 108934 en_US
dc.personcode 0000062034 en_US
dc.personcode 996445 en_US
dc.percentage 100 en_US
dc.classification.name Marine and Estuarine Ecology (incl. Marine Ichthyology) en_US
dc.classification.type FOR-08 en_US
dc.edition en_US
dc.custom en_US
dc.date.activity en_US
dc.location.activity en_US
dc.description.keywords Salinity ? Temperature ? Chlorophyll a ? Nutrients ? Climate change ? Stratification en_US
dc.staffid en_US
dc.staffid 996445 en_US

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