Growth and gas exchange of Andropogon gerardii as influenced by burning

Late spring burning response of the dominant big bluestem (Andropogon gerardii) was studied on a tallgrass site in central Oklahoma (USA) during a dry (1984) and a wet (1985) year. During active growth (May and June) when temperatures were not limiting, photosynthesis (PS) was higher for burned (25-...

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Bibliographic Details
Published in:Journal of range management 1988-05, Vol.41 (3), p.239-244
Main Authors: Svejcar, Tony J., Browning, James A.
Format: Article
Language:English
Subjects:
anatomia de la planta
anatomie vegetale
andropogon
Andropogon gerardii
biomasa
biomass
biomasse
brulage dirige
ciclo biogeoquimico
controlled burning
cycle biogeochimique
cycling
Drought
fenologia
fisiologia vegetal
Growing seasons
Improvements
Leaf area
Leaves
metabolisme de l' azote
metabolismo del nitrogeno
Nitrogen
nitrogen metabolism
oklahoma
phenologie
phenology
physiologie vegetale
plant anatomy
plant physiology
Plants
Prairies
quema controlada
Range management
superficie foliar
surface foliaire
Tallgrass prairies
Tillers
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Summary:Late spring burning response of the dominant big bluestem (Andropogon gerardii) was studied on a tallgrass site in central Oklahoma (USA) during a dry (1984) and a wet (1985) year. During active growth (May and June) when temperatures were not limiting, photosynthesis (PS) was higher for burned (25-27 μ$\text{moles}^{-2}\ {\rm s}^{-1}$) relative to unburned plants (20-25 μ moles m-2s-1); but during summer drought, PS declined to
ISSN:0022-409X
2162-2728
DOI:10.2307/3899176