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|a 10.1111/j.1529-8817.2010.00929.x
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|a eng
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1 |
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|a Zou, Dinghui
|e verfasserin
|4 aut
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|a SHORT- AND LONG-TERM EFFECTS OF ELEVATED CO2 ON PHOTOSYNTHESIS AND RESPIRATION IN THE MARINE MACROALGA HIZIKIA FUSIFORMIS (SARGASSACEAE, PHAEOPHYTA) GROWN AT LOW AND HIGH N SUPPLIES(1)
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|c 2011
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|a Text
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|a ƒaComputermedien
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|a Date Completed 30.03.2016
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|a Date Revised 09.01.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2011 Phycological Society of America.
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|a The short-term and long-term effects of elevated CO2 on photosynthesis and respiration were examined in cultures of the marine brown macroalga Hizikia fusiformis (Harv.) Okamura grown under ambient (375 μL · L(-1) ) and elevated (700 μL · L(-1) ) CO2 concentrations and at low and high N availability. Short-term exposure to CO2 enrichment stimulated photosynthesis, and this stimulation was maintained with prolonged growth at elevated CO2 , regardless of the N levels in culture, indicating no down-regulation of photosynthesis with prolonged growth at elevated CO2 . However, the photosynthetic rate of low-N-grown H. fusiformis was more responsive to CO2 enrichment than that of high-N-grown algae. Elevation of CO2 concentration increased the value of K1/2 (Ci) (the half-saturation constant) for photosynthesis, whereas high N supply lowered it. Neither short-term nor long-term CO2 enrichment had inhibitory effects on respiration rate, irrespective of the N supply, under which the algae were grown. Under high-N growth, the Q10 value of respiration was higher in the elevated-CO2 -grown algae than the ambient-CO2 -grown algae. Either short- or long-term exposure to CO2 enrichment decreased respiration as a proportion of gross photosynthesis (Pg) in low-N-grown H. fusiformis. It was proposed that in a future world of higher atmospheric CO2 concentration and simultaneous coastal eutrophication, the respiratory carbon flux would be more sensitive to changing temperature
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|a Journal Article
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|a CO2
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|a Hizikia fusiformis
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|a brown algae
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|a marine macroalgae
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|a photosynthesis
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|a respiration
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|a Gao, Kunshan
|e verfasserin
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|a Luo, Hanjin
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of phycology
|d 1966
|g 47(2011), 1 vom: 15. Feb., Seite 87-97
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|x 0022-3646
|7 nnns
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|g volume:47
|g year:2011
|g number:1
|g day:15
|g month:02
|g pages:87-97
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