scholarly journals Phytoplankton photosynthetic efficiency and primary production rates estimated from fast repetition rate fluorometry at coastal embayments affected by upwelling (Rias Baixas, NW of Spain)

2006 ◽  
Vol 28 (12) ◽  
pp. 1153-1165 ◽  
Author(s):  
P. Estevez-Blanco ◽  
P. Cermeno ◽  
M. Espineira ◽  
E. Fernandez
Keyword(s):  
Primary Production ◽  
Repetition Rate ◽  
Photosynthetic Efficiency ◽  
Production Rates ◽  
Coastal Embayments ◽  
Nw Of Spain ◽  
Fast Repetition Rate Fluorometry ◽  
Rías Baixas

Maximum photosynthetic efficiency of size-fractionated phytoplankton assessed by 14 C uptake and fast repetition rate fluorometry

2005 ◽  
Vol 50 (5) ◽  
pp. 1438-1446 ◽  
Author(s):  
Pedro Cermeño ◽  
Patricia Estévez-Blanco ◽  
Emilio Marañón ◽  
Emilio Fernóndez
Keyword(s):  
Repetition Rate ◽  
Photosynthetic Efficiency ◽  
Fast Repetition Rate Fluorometry

Phytoplankton Productivity Changes in a Small, Double-Basin Lake in Response to Termination of Experimental Fertilization

1987 ◽  
Vol 44 (S1) ◽  
pp. s47-s54 ◽  
Author(s):  
J. A. Shearer ◽  
E. J. Fee ◽  
E. R. DeBruyn ◽  
D. R. DeClercq
Keyword(s):  
Numerical Model ◽  
Primary Production ◽  
The Other ◽  
Production Rates ◽  
Nitrogen And Phosphorus ◽  
Phytoplankton Productivity ◽  
Phytoplankton Primary Production ◽  
Carbon And Nitrogen ◽  
Model Technique ◽  
Reference Lakes

One basin of a small, double-basin lake was fertilized with carbon, nitrogen, and phosphorus for eight years, and then fertilization was stopped. The other basin was fertilized simultaneously with equivalent amounts of carbon and nitrogen only. Phytoplankton primary production was monitored using an incubator–numerical model technique. Production increased dramatically in the basin receiving artificial additions of C, N, and P. The increase was particularly large in the epilimnion where Cyanophyte blooms occurred during each year of fertilization and production rates averaged 2 to 10 times higher than in nearby, unfertilized reference lakes. Phosphorus, not nitrogen or carbon, was the critical nutrient. The productivity of the other basin also increased, but to a lesser degree and no Cyanophyte blooms were observed in this basin. When all fertilization was terminated, production in both basins immediately decreased. No more surface blooms were observed in either basin. Within 3 yr, the production had dropped to levels typical of reference lakes.

Use of Fast Repetition Rate Fluorometry on Detection and Assessment of PAH Toxicity on Microalgae

2009 ◽  
Vol 209 (1-4) ◽  
pp. 345-356 ◽  
Author(s):  
Patricia Pérez ◽  
Emilio Fernández ◽  
Ricardo Beiras
Keyword(s):  
Repetition Rate ◽  
Fast Repetition Rate Fluorometry ◽  
Pah Toxicity
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