Seasonal- and event-scale variations in upwelling, enrichment and primary productivity in the eastern Great Australian Bight
| Autor: | Mark J. Doubell, Ana Redondo Rodriguez, Piers Chapman, John F. Middleton, Paul D. van Ruth, Nicole L. Patten |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
010504 meteorology & atmospheric sciences 010604 marine biology & hydrobiology Temperature salinity diagrams Wind stress Oceanography 01 natural sciences Productivity (ecology) Downwelling Upwelling Environmental science Event scale Primary productivity 0105 earth and related environmental sciences |
| Zdroj: | Deep Sea Research Part II: Topical Studies in Oceanography. :36-45 |
| ISSN: | 0967-0645 |
| Popis: | We used a suite of physical, chemical and biological datasets to assess the influence of upwelling/downwelling on enrichment and primary productivity in shelf waters of the eastern Great Australian Bight at seasonal and event scales. Results showed that the length of an upwelling season did not dictate its intensity or productivity, and that long seasons were not necessarily the most intense or productive. At the event scale, temperature and salinity were found to be better indicators of enrichment of shelf waters than wind stress, with temperatures 2 µm) and bursts of primary productivity (up to ∼ 700 mg C m−2 d−1). A key finding of this study was the importance of differentiating between upwelling events and enrichment events. The former occurred in the early upwelling season (November-December) and were demonstrated by periods of positive wind stress. The latter only occurred in the late upwelling season (January – April), and saw water with temperatures |
| Databáze: | OpenAIRE |
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