scholarly journals Simulating carbon dioxide exchange rates of deciduous tree species: evidence for a general pattern in biochemical changes and water stress response

2009 ◽  
Vol 104 (4) ◽  
pp. 775-784 ◽  
Author(s):  
Robert F. Reynolds ◽  
William L. Bauerle ◽  
Ying Wang
Keyword(s):  
Carbon Dioxide ◽  
Water Stress ◽  
Stress Response ◽  
Exchange Rates ◽  
Tree Species ◽  
General Pattern ◽  
Biochemical Changes ◽  
Deciduous Tree ◽  
Carbon Dioxide Exchange

CARBON DIOXIDE EXCHANGE RATES OF FRUITING SOYBEAN PLANTS EXPOSED TO OZONE AND SULPHUR DIOXIDE SINGLY OR IN COMBINATION

1984 ◽  
Vol 64 (1) ◽  
pp. 69-75 ◽  
Author(s):  
N. M. LE SUEUR-BRYMER ◽  
D. P. ORMROD
Keyword(s):  
Carbon Dioxide ◽  
Glycine Max ◽  
Exchange Rates ◽  
Sulphur Dioxide ◽  
Net Photosynthesis ◽  
Exposure Period ◽  
Carbon Dioxide Exchange ◽  
Continuous Stirred Tank Reactor ◽  
Glycine Max L ◽  
Soybean Plants

Carbon dioxide exchange rates (CER) of intact soybean (Glycine max (L.) Merr.) plants at the fruiting stage were measured in continuous stirred tank reactor (CSTR) chambers. Plants were exposed to clean air, 67 ppb ozone (O3), 300 ppb sulphur dioxide (SO2), or 67 ppb O3 plus 300 ppb SO2 for 7.5 h∙day−1 for 5 days. Carbon dioxide exchange rates were measured hourly during the last 6 h of each exposure period and decreased progressively during the first period of exposure to O3 plus SO2, dropping in hour 6 to 42% of the hour 1 rate, and to a lesser extent in the second daily exposure when the corresponding decline was to 70%. There was a declining trend in CER of SO2-treated but not O3-treated plants with increasing number of days of exposure. Carbon dioxide exchange rates of all plants generally peaked and declined during each exposure period.Key words: Air pollution, net photosynthesis, mixtures, Glycine max

Estimating carbon dioxide exchange rates at contrasting northern peatlands using MODIS satellite data

2013 ◽  
Vol 137 ◽  
pp. 234-243 ◽  
Author(s):  
Angela Kross ◽  
Jonathan W. Seaquist ◽  
Nigel T. Roulet ◽  
Richard Fernandes ◽  
Oliver Sonnentag
Keyword(s):  
Carbon Dioxide ◽  
Exchange Rates ◽  
Satellite Data ◽  
Carbon Dioxide Exchange ◽  
Northern Peatlands
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