Record Details
Chlorophyll natural fluorescence response to upwelling events in the Southern Ocean
ScholarsArchive at Oregon State University
| Field | Value |
|---|---|
| Title | Chlorophyll natural fluorescence response to upwelling events in the Southern Ocean |
| Names |
Letelier, Ricardo M.
(creator) Abbott, Mark R. (creator) Karl, David M. (creator) |
| Date Issued | 1997 (iso8601) |
| Abstract | Variability of solar-induced (natural) fluorescence and chlorophyll were measured on scales of hours to weeks in the upper layer of a cyclonic eddy located south of the Antarctic Polar Front using a free-floating drifter. The fluorescence signal was analyzed both in terms of chlorophyll concentration and as an indicator of energy distribution in the photosynthetic apparatus. Long-term trends in fluorescence parallel changes in chlorophyll concentration. Considering a significant positive correlation between fluorescence and the relative depth of the eddy upper layer we hypothesize that the observed short-term variations in natural fluorescence are a physiological response of phytoplankton to changes in the supply of limiting nutrients. This interpretation is consistent with the Southern Ocean iron limitation hypothesis. |
| Genre | Article |
| Identifier | 1. Letelier, Ricardo M., Mark R. Abbott, and D.M. Karl, 1997, Chlorophyll natural fluorescence response to upwelling events in the Southern Ocean, Geophys. Res. Letters, 24, 409–412. |
