Influence of carbonic anhydrase activity in terrestrial vegetation on the 18O content of atmospheric CO2

The oxygen-18 (18O) content of atmospheric carbon dioxide (CO2) is an important indicator of CO2 uptake on land. It has generally been assumed that during photosynthesis, oxygen in CO2 reaches isotopic equilibrium with oxygen in 18O-enriched water in leaves. We show, however, large differences in th...

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Veröffentlicht in:	Science (American Association for the Advancement of Science) 2001-03, Vol.291 (5513), p.2584-2587
Hauptverfasser:	GILLON, Jim, YAKIR, Dan
Format:	Artikel
Sprache:	eng
Schlagworte:	Animal and plant ecology Animal, plant and microbial ecology Atmosphere Biological and medical sciences Carbon Dioxide - analysis Carbon Dioxide - metabolism Carbonic Anhydrases - metabolism Chemical composition and interactions. Ionic interactions and processes Climate Earth, ocean, space Exact sciences and technology External geophysics Fundamental and applied biological sciences. Psychology Meteorology Oxygen - metabolism Oxygen Isotopes - analysis Oxygen Isotopes - metabolism Photosynthesis Plant Leaves - enzymology Plant Leaves - metabolism Plants - enzymology Plants - metabolism Poaceae - enzymology Poaceae - metabolism Seawater Soil Synecology Terrestrial ecosystems Water - metabolism
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