Dataset

Fast Repetition Rate Fluorometry (FRRF) data collected on the RV L'Astrolabe from 18/02/2007 to 23/02/2007 (Hobart - Dumont d'Urville)

Australian Ocean Data Network
McMinn, Andrew, Prof.
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CC-BY

Attribution 2.5 Australia
http://creativecommons.org/licenses/by/2.5/au/

Data and products are provided "as is" without any warranty as to fitness for a particular purpose.

Any users of the data are required to clearly acknowledge the source of the material in the format: "French Antarctic Program (IPEV), crew of L'Astrolabe, Bronte Tilbrook (CSIRO), volunteers who maintained FRRF while at sea. AAD provided funding for data analysis."

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These data were collected on the RV L'Astrolabe (platform code: FHZI) from 18/02/2007 to 23/02/2007 on a trip from Hobar to Dumont D'Urville. Maximum photochemical efficiency of photosystem II (PSII), also called maximum quantum yield of PSII (Fv/Fm), has become one of the most widely utilized fluorescence parameters in phytoplankton research. It represents the potential photochemical efficiency, which is the probability that the light energy captured by the photosynthetic apparatus is being utilized as photochemistry. Fv/Fm has been shown to have an instant response to variations in physical and chemical properties and is interpreted as a diagnostic of the overall health or competence of phytoplankton. Together with the absorption cross section area of PSII and chlorophyll concentration, it can be used to measure primary production (Cheah et al. 2011, Deep Sea Research). Seawater from 3 m depth was supplied continuously from the ship’s clean seawater line. FRR fluorescence yields were measured continuously at 1 minute intervals in dark-adapted state (! 15 minutes dark-adaptation) using a flash sequence consisting of a series of 100 subsaturation flashlets (1.1 μs flash duration and 2.8 μs interflash period) and a series of 20 relaxation flashlets (1.1 μs flash duration and 51.6 μs interflash period).

Created: 04 08 2011

Data time period: 18 02 2007 to 23 02 2007

147.4789417,-43.08917333 147.4789417,-66.660745 139.9890367,-66.660745 139.9890367,-43.08917333 147.4789417,-43.08917333

143.7339892,-54.874959165