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Activity Number:
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87
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Type:
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Invited
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Date/Time:
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Monday, August 7, 2006 : 8:30 AM to 10:20 AM
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Sponsor:
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SSC
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| Abstract - #305057 |
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Title:
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Patterns of Biological Productivity in Saanich Inlet
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Author(s):
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Frank Whitney*+ and Ann Gargett and Melissa McQuoid
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Companies:
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Institute of Ocean Sciences and Institute of Ocean Sciences and Institute of Ocean Sciences
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Address:
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9860 W. Saanich Road, Sidney, BC, V8L 4B2, Canada
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Keywords:
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Abstract:
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Biological activity in the surface waters of Saanich Inlet are controlled strongly by solar and lunar cycles. Primary productivity is high in spring and subsequently shows pulses on two-week tidal cycles. A simple physical model, using tidal mixing and discharge from local rivers to drive circulation, is able to reproduce the periodic supply of nutrient-rich waters to the inlet. Because Saanich Inlet has anoxic sediments, a record of the annual and fortnightly productivity cycles is preserved. Cores taken from the inlet basin show light and dark banding that reflects sedimentation alternately of phytoplankton or terrigenous materials. A long core shows there has been little change in the phytoplankton populations of the inlet over the past 7,000 years, although there is evidence that primary production and fish abundance may have decreased over the past millennium.
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- The address information is for the authors that have a + after their name.
- Authors who are presenting talks have a * after their name.
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