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Interactive comment on "Satellite-detected fluorescence reveals global physiology of ocean phytoplankton" by M. J. Behrenfeld et al.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Cullen, Joseph |
| Copyright Year | 2009 |
| Abstract | Behrenfeld and colleagues claim that satellite-detected fluorescence measurements can be used as a global physiological indicator of iron-limited growth conditions in marine phytoplankton. Their analysis involves correcting the sun-induced chlorophyll fluorescence signal for phytoplankton pigment, pigment packaging, and the effects of irradiance; results are used to derive estimates of fluorescence quantum yield that are interpreted as a diagnostic of nutrient stress in phytoplankton. The authors’ conclusion that they have found a globally applicable diagnostic is unprecedented. However, a brief review of relevant literature shows that their approach is not new and that aspects of the authors’ analyses are at odds with published results. Here I discuss research that should be considered and assumptions that must be more thoroughly tested before satellite-detected fluorescence measurements can be used as a robust diagnostic of phytoplankton physiology. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://www.biogeosciences-discuss.net/5/S2646/2009/bgd-5-S2646-2009.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
