Chapter

Environmental Biology

Park S. Nobel and Edward G. Bobich

in Cacti

Published by University of California Press

Published in print October 2002 | ISBN: 9780520231573
Published online March 2012 | e-ISBN: 9780520927889 | DOI: http://dx.doi.org/10.1525/california/9780520231573.003.0004
Environmental Biology

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This chapter discusses gas exchange and other environmental responses of cacti. It focuses on net CO2 uptake and examines the influence of three key environmental factors—temperature, soil moisture, and solar irradiation absorbed by photosynthetic pigments, i.e., the photosynthetic photon flux (PPF)—on CO2 uptake by Opuntia ficus-indica. The response of net CO2 uptake by Opuntia ficus-indica to these three variables is important for predicting its productivity under any environmental condition and serves as a model for assessing the net CO2 uptake, and hence the potential biomass productivity, of other cacti.

Keywords: gas exchange; environmental responses; cacti; CO2 uptake; temperature; soil moisture; photosynthetic photon flux; PPF; Opuntia ficus-indica; biomass productivity

Chapter.  11731 words.  Illustrated.

Subjects: Plant Sciences and Forestry

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