Article
 

Chlorophyll natural fluorescence response to upwelling events in the Southern Ocean

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/sq87bv92n

Descriptions

Attribute NameValues
Creator
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.
Resource Type
Date Available
Date Issued
Citation
  • 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.
Journal Title
Journal Volume
  • 24
Journal Issue/Number
  • 4
Academic Affiliation
Rights Statement
Funding Statement (additional comments about funding)
  • The present research was funded by NASA Grant NAGW-4596 and contract NAS 5-31360 (to M.R. Abbott) and NSF grant DPP-9118438 (to D.M. Karl).
Publisher
Language
Replaces
ISSN
  • 0094-8276

Relationships

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details Letelier_Abbott_Karl_1997_GRL.pdf 2017-07-24 Public Download