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B. G. Drake, P. W. Leadley, W. J. Arp, D. Nassiry, P. S. Curtis, An Open Top Chamber for Field Studies of Elevated Atmospheric CO2 Concentration on Saltmarsh Vegetation, Functional Ecology, Vol. 3, No. 3 (1989), pp. 363-371
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Drake et al. (1989) studied this question.
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